How to prevent the deformation of aluminum die casting

    The reason of the deformation of aluminum die casting:
Casting structure is poor;
Open mold is too early, rigid enough;
The top rod is not set properly, and the force is not uniform when the ejection.
Improper gate location or gate thickness is too thick, easy to deform when the gate is removed;
Because the local surface is rough and the resistance is large, product deformation when the ejection;
On the local temperature of the mold is too high, products are not completely cured, ejection force is too large, deformation caused by product.

    Treatment method:
Improved aluminum die casting structure;
Adjust the pressure and the time of open mold;
Reasonably set the top position and the number of the top rod, preferably with four, open place;
Changing the gate location, so that the gate has a point, reduce the thickness of the gate, in order to ensure the quality of the product is not easy to deformation of the product when the resection gate;
Strengthen the mold surface treatment, reduce the release resistance;
On the partial mold temperature control, maintains the mold heat balance.

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Surface treatment of magnesium alloy die casting

    Magnesium alloy pressure casting surface generally need to pretreatment (cleaning, degreasing, pickling), coating, spray coating (paint, spray, plating metal) and so on. The surface treatment of magnesium alloy die casting usually refers to the coating process, its main function is to form a protective coating on the surface of die casting and the adhesion of the coating is good with paint plastic or metal. At present, in the field of magnesium alloy die casting is mainly used in wet surface treatment method, that is the surface treatment method using treatment solution. The existing surface treatment technology is not the same, according to the film forming conditions, the surface treatment technology of magnesium alloy die casting can be divided into two types: chemical film and anodic oxidation film.

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Export situation of light alloy die casting products

    From light alloy die casting products export situation, total exports maintained a rapid growth situation, export countries and regions is increasing, mainly the United States, Europe and Japan.
    From 2003 to 2007, aluminum alloy die casting an annual average growth rate reached 51%, mainly exported to countries and regions is the United States, Hong Kong, Japan, Germany and the UK, accounts for the proportion were 31%, 12%, 11%, 4% and 4%.
    2007, magnesium alloy die castings export amount of $41.8 million, an increase of 58%, the main export countries is the United States, Canada, Germany and Italy, the proportion accounted for respectively 51%, 6%, 5% and 5%.

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The design of the ingate of die casting mold making

    The location of the ingate of die casting mold making should be determined according to the structure of the die casting, the change of the wall thickness, the shrinkage deformation, and the mold parting position.
    The ingate position should be the shortest distance between the metal liquid filled cavity, to prevent the loss of excessive heat of the metal liquid and produce cold shut or stripe and other defects when filling.
    Metal liquid should be first filled with the deep part of the cavity, to avoid the flow of the metal liquid into the parting surface leading to the closure of the exhaust groove.
As far as possible the use of single ingate design, to prevent the flow of multi-strand liquid metal produce the defects such as vortex and air entrapment when it into the cavity.
    The general structure of the die casting mold making is mainly the thick ingate, so that the liquid metal filling is stationary. This is conducive to the exhaust and transfer of static pressure.
    The position of the ingate is located in the mechanical process position, avoiding the position of high precision, high surface roughness and non machining, to prevent leaving traces after removal of the ingate.

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Commonly materials for metal stamping parts supplier

         Hardware refers to these five kinds of metal materials: Ag, Cu, Fe, Sn, Au. Hardware is the mother of industry; the basis of national defense. The commonly materials for metal stamping parts supplier, usually divided into two categories of big hardware and small hardware. The big hardware refers to the steel plate, reinforcing steel bar, flat iron, universal angle steel, channel iron, double t iron and all kinds of steel materials. The small hardware refers to the building hardware, galvanized iron sheet, lock type nails, iron wire, steel wire mesh, wire scissors, family hardware, various tools, etc.. According to the properties and application of metal materials can be divided into iron and steel materials, non-ferrous metal materials, mechanical parts, transmission equipment, auxiliary tools, tools, construction hardware, home hardware, such as eight categories. KENOS metal stamping parts supplier uses the material mainly is the small hardware.

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The technology of die casting parts manufacturer

    The technology of die casting parts manufacturer is the use of machine, mold and alloy, so that the pressure, speed and time uniform. It is a process that the molten metal can be filled in the mold under the high pressure, and the solidification of the casting process is formed under high pressure.
    High pressure and high speed is the main characteristic of pressure casting.
    1, pressure: 15 - 100MPa
    2, speed: 10 - 80 m / s, inner gate filling speed
    3. Temperature: Pouring temperature: refers to the pressure chamber into the cavity temperature, with furnace temperature as a benchmark; pouring temperature affects the casting mechanical properties and quality, the temperature of zinc alloy is generally choose 410~450 °C, aluminum alloy generally choose 610~700 °C, magnesium alloy generally choose 640-700 degree, copper alloy general choice 900~980°C. Mold temperature: choose different temperatures according to the material, lead alloy and tin alloy are 60~120 °C, zinc alloy is 160~200 °C, magnesium alloy is 200~250 °C, aluminum alloy is 220~280 °C, copper alloy 300~350 °C. Die temperature control: heating device heating pipe, cooling water system, using heat conduction oil, electronic thermometer control stability. Time: refers to the filling time, liquid metal filling time is very short, about 0.01 - 0.2 s, according to the specific circumstances to adjust the pressure boost time, the pressure holding time and the mold holding time. Release agent: die casting parts manufacturer common used mold release agent are beeswax, colloidal graphite, graphite oil; punch coatings: punch lubricant / crucible coating, with the same performance.performance.

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What are the advantages of zamak die casting

    Most of the alloys are suitable for die casting except for iron alloy. Different alloys have different physical properties and mechanical properties.
    Aluminum alloy and zinc alloy are the most commonly used die casting materials, followed by magnesium, zinc, copper, tin, lead. Since zinc alloy has good casting properties and mechanical properties, it has been an important position in the hot chamber die casting.
    The advantages of zamak die casting has low melting point, melting and holding convenient, pressure chamber and die wall heat less, and prolongs the service life of the mold; good casting properties; melting and casting not absorbing iron, not sticking to mould; good mechanical properties and wear resistance at room temperature, excellent anti impact performance, it is widely used in manufacturing all kinds of zamak die casting products, especially thin shell products and smooth surface of the product.

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What are the magnesium die casting machine

    In the forming technology of magnesium alloy, the majority is produces by the die casting, so the magnesium die casting machine for magnesium alloy industry has important significance.
    1. Magnesium alloy hot chamber die casting machine
Different from ordinary hot chamber machine for magnesium alloy hot chamber, magnesium alloy hot chamber die casting machine has a higher pressure injection speed, the injection speed is more than 6m/s in the empty load. And the hydraulic impact is small when the pressure is stopped, the heat preservation crucible furnace operating temperature is high and temperature requirements more stringent control, heat preservation crucible furnace should be considered to prevent the oxidation of alloy liquid.
    2. Magnesium alloy horizontal cold chamber die casting machine
Most of the large and special requirements of the magnesium die casting is used to produce the cold chamber die casting machine, for example, many important automotive parts, etc.. But the ordinary cold chamber die casting machine must be the following improvement to meet the needs of magnesium alloy die casting production: The fast pressure injection speed increased from 4 ~ 10m/s to 6 ~ 5m/s. Improve the pressure injection speed and pressure control level. Special furnace with protective gas device.

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The development direction of technology of die casting manufacturer

    The technology of die casting manufacturer mainly develops to these aspects: Die Casting Filling Process in theory and practice gradually improve; die casting process detection technology unceasing popularization and improve; automatic die casting production gradually perfecting and popularizing; electronic computer technology is used more and more widely and deeply; large die casting technology gradually mature; vacuum die casting technology will further expand the application range of die casting. Die casting die material have significant progress, mold manufacturing process will gradually improve; magnesium alloy die castings have substantially growth; the use of rapid prototyping model design become new focus; the complete cultivation of the die casting unit will become the main production mode of die casting manufacturer. New alloys and materials for the application of the pressure casting open up new ways; semi solid metal forming technology will have a new breakthrough; squeeze casting will expand the application field of pressure casting.

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What problems should be considered in the zinc die casting process

    The following questions should be considered in the formulate of zinc die casting process:
(1) The liquid metal can cleanly and smoothly flow in the gating system, and does not produce eddy current separation.
(2) Is there no sharp or dead zones exist?
(3) Is there a change in the section area of the gating system?
(4) Is the location of the vent and spillway trough correct? Is it big enough? Whether it will be blocked? Whether Gas can be effective and smooth discharge?
    Using computer simulation of filling process is to analyze the above phenomenon, in order to make a reasonable choice of zinc die casting parameters.

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Safety hazards of poor quality magnesium alloy die casting equipment

     Because of the nature of magnesium alloy, flammable, explosive, magnesium alloy die casting equipment requirements are also higher, inferior equipment have a potential danger. Magnesium die casting operations need to be molten magnesium into the mold cavity at a speed of 70~100 m/s. Due to the melting of magnesium liquid inflammable and explosive, meets the oxygen intense burning, meets the water detonation, with the rust, including the moisture content concrete, and so on can have the fierce response including the silicon fire-proof material and when the fire it is difficult to put out. The performance, reliability and safety of the magnesium alloy die casting machine are extremely high, and the poor quality of the equipment is extremely easy to cause the disaster accident.
     Under normal circumstances, a small area of the magnesium liquid fire can still take some measures to save, in the event of fire, or spread, explosion, is unable to control, it will cause huge personnel and property losses.
     In order to ensure the reliability of the production safety and long-term use of production and poor conditions, quality requirements of magnesium alloy die casting equipment is high, unlike general machinery and equipment, do not have strong comprehensive technical strength of the manufacturers of inferior equipment, extremely easy to cause major disasters.

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The design of gating system of die casting mold making

    The design of exhaust system and gating system of die casting mold making is as follows:
    1. According to the pressure casting alloy type, outline dimensions, quality, weight, projection area of the parting surface, factory of die casting equipment, determine the type of die casting machine and the diameter of the pressure chamber.
    2. Comprehensive analysis of pressure casting quality requirements and technical requirements, determine the molten metal filling position, direction and flow state, try to avoid or reduce the curved channel of gating system to prevent air entrapment or pressure loss.
    3. Comprehensive parting surface, according to the degree of complexity of the die casting, structural characteristics and processing positioning surface and process datum requirements determined gating system overall structure and the main structure dimensions.
    4. If there are multiple cavities in the die casting mold making, the filling conditions of each type of cavity must be consistent, so that each of the die casting parts simultaneously filling and simultaneous solidification.
    5. According to the filling direction and flow state of the metal molten liquid, determined the position and structure of the exhaust system.
    6. According to the filling position and direction of the metal molten liquid, the influence of the mold temperature and the technological requirements, when necessary, set the blind runner, adjust the distribution of mold temperature.

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The production process of metal stamping mould

The general production process of metal stamping mould:
    1. Prepares materials. According to the need to buy mold steel materials.
    2. Rough machining. Processes the plane and the side with the milling machine. The processing objects have the clamping plank, stripper plate, the lower template and the backing strip, the ledger wall, upper cover plate and pushing plate and so on.
    3. Fine processing. Machining plane and right angle with the grinding machine. Grinding the plane of the clamping plank, stripper plate, the lower template and the backing strip, then grinding right angle, then grinding the plane of the bottom and upper cover plate.
    4. Scribing. According to the metal stamping mould production drawings to grind a good mold plate placed on the surface plate, carries on the lineation with the height calipers. Then carries on the drill hole and tapping to the mold plate.  
    5. Heat treatment. Heat treatment is needed to improve the hardness of the lower template and module.
    6. Finishing. Once again grinding after heat-treatment of the panel of the plane and play a right angle, and then the line cutting.
    7. Assembly mould. Selection of mold or supporting the guide column and a guide sleeve to assembly mold.
    8. Test mould. Will complete the mold is installed on the metal stamping machine tool to carry on the debugging, then carries on the ramming and surveys the ramming components the size to confirm whether it does conform to the product requirement.

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China automobile die casting parts manufacturer market prospects

     At present, China's economic situation is generally good. China automobile die casting parts manufacturer to develop smoothly. 2009 GDP growth of 8.7%; the expansion of domestic demand, the national implementation of the total amount of 4 trillion yuan of investment plans for two years, ten industrial restructuring and revitalization plan, for the die casting industry provides a broad space for development. Especially automobile industry planning objectives: from 2009 to 2011, the average growth rate reached 10%, more than 90% of China's automotive products in domestic sales, has little impact on the international market.
     In addition, the implementation of the revitalization of the industry, such as motorcycles, electrical appliances, telecommunications, home appliances hardware, electrical and mechanical instruments, light industry and other industries, have provided new opportunities for the survival and development of China die casting manufacturer.

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The process requirements of the zamak die casting manufacture

     Zamak die casting manufacture commonly used material is 3# zinc alloy. There are these requirements for the production process:
     1. There will be a pin hole mark on the product. The ejector pin is in the right position. Try to make the product demoulding force uniform, avoid product distortion.
     2. Die casting mold must have a feed port and a discharge port, channel thickness is generally 3 to 4 mm, the width is 6 to 10 mm, the inclination of 10 degrees, into the feed inlet thickness is 0.25 mm.
     3. The product internal buckle position of the product needs to make the lifter. The thickness of the inclined top is 5.5 mm above, in order to ensure its strength, the angle is 3 degrees to 8 degrees.
     4. Zamak die casting products similar in other mould making products, need to have the pattern draft, the general is 0.5 degrees to 5 degrees between (according to the product structure height). The pattern draft is too small to affect the mold and deformation, but it can not be too large, otherwise the influence of assembly.
     5. Product allows local minimum wall thickness is 0.3 mm, the average wall thickness is generally 0.8 mm or more, turning point try to do more than 0.5 mm fillet.

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Anti burning technology of magnesium die casting manufacturing

    1. The salt flux: metal melt with chloride caused pollution and salt vapor on the surrounding environment caused by damage, not adapted to the modern large quantities of magnesium die casting manufacturing.
    2. At present, SF6 is the basic and indispensable protective gas, but only in the sealing furnace the effect is good. SF6 the only drawback is that it will produce a greenhouse effect.
    3. SO2 as a protective gas, simple and practical, can be mixed with SF6.
    4. The inert gas argon, helium nitrogen is used alone can't inhibit Mg evaporation in the atmosphere, but it can play a role in the whole closed function of the furnace..
    5. To improve the oxidation state, to add elements of Be, Ca, Zn, can change the performance of magnesium alloy casting, on the mechanical properties also influence for magnesium die casting, which the effect of Be is the best, do not affect the cutting performance of the material.

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Importance of automobile die casting manufacturer

     According to the report (in the United States as an example), at the beginning of 1980s, the average weight of each car produced by automobile die casting manufacturer is within the range of 1315 to 1542KG, then gradually decreasing. But the amount of aluminum alloy castings in each car is gradually increasing. 1980 average each car is 34KG, 1990 it is 68KG, 2000 it increased to 111.3KG, 2009 it reached 157KG, in which the aluminum alloy die-casting parts accounted for more than 65% of all castings.
     In addition, in addition to aluminum alloy die castings, but also the use of zinc alloy, magnesium alloy and copper alloy die castings, it is obvious that the amount of die castings in each car. Die casting industry is closely related to automobile industry.
     Recalling the history of the development of automobile industry in the world, in various parts of the design and application process, attaches great importance to the adoption of die-casting parts, especially complex, large and important parts, is usually as a major research topic. This not only shows the irreplaceable of the die casting industry in this aspect, but also highlights that the development of the die casting manufacturer is largely based on the automobile industry. In other words, the die casting industry is one of the important supporting industries for the automobile industry.

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The raw material of the zinc die casting phone shell

    In the zinc alloy mobile shell products, choose the right raw material can guarantee the product quality and improve the output. The raw material for zinc die casting phone shell is zinc 3#, zinc 5#, zinc 7#, zinc 8#. From the purchase cost considerations: the general use of zinc 3#; the higher strength of the products using zinc 5#; high resistance to deformation and wear resistant components are required for zinc 8#.
    Because of the low content of copper in zinc 3#, the mechanical properties of the weak parts of the product are low, and the product is easily deformed.. Zinc 5# copper content of about 1%, the intensity of the product has a substantial increase, but still did not achieve the ideal of the qualified rate. The product of zinc 8# production, the qualified rate is greatly improved, because of the high aluminum content in the 8# raw materials, has the stable anti deformation capacity and high comprehensive performance. Thus, we should choose zinc alloy die casting raw material according to the structure and the use of the product, so as to achieve the satisfactory quality and the cost benefit.

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How to eliminate the bubble defect of aluminum die casting

     The characteristics of the bubble defect of aluminum die casting:
The casting surface uplift, the size of a grain of rice, its interior forms the cavity.
     The cause of bubble formation:
Molten liquid is not completely full of shot sleeve, easy to produce air entrapment, injection speed is too fast; The mold exhaust is not good; The gas in the molten liquid is not removed and the melting temperature is too high. The mold temperature is too high, the solidification time is not enough, the strength is not enough, and mold opening is too early, compressed gas expansion. Too much release agent. The design of the gate is not good.
     The treatment method of the defects of aluminum die casting:
Take in the diameter of the pressure chamber, so that the metal melt can be completely filled with the pressure chamber. To extend the pressure injection time, to reduce the injection speed at the first stage, and to change the low speed and the high-speed injection switch points. Reduce the mold temperature and keep the heat balance. Adding exhaust chute, overflow chute, so that the exhaust is fully, timely removal of oil and waste from the exhaust tank. Adjust the smelting process and carry out degassing treatment. Prolong the holding time of the mold. Reduce release agent dosage.

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Safety management of magnesium alloy die casting workshop

    The magnesium alloy die casting workshop is the same as the ordinary die casting workshop in good ventilation, not only that, but also for fire and waterproof have more stringent requirements. The workshop building must use the non-combustible materials to complete, the floor materials were also heat-resistant and without water suction. Do not install the exhaust fan above the melting furnace, guards against the rain leakage    . Die casting worksite must be clean, do not allow any water and grease, and to have good ventilation conditions.
     Magnesium alloy die casting materials should be stored in a cool dry and ventilated warehouse, the smelting site should not be stored too many magnesium ingot. The regrind material and waste materials of the magnesium alloy should also be stored separately in the non combustible container. The supply of power, fuel, cooling water and gas in the die casting machine and the furnace shall have the remote control, if the accident can be turned off in time. The workshop must have emergency exit and remain unobstructed.
     Fire extinguishing agent for magnesium alloy have dry sand, covering agent, D grade fire extinguisher. These fire fighting equipment should be placed in the place of the eye-catching place and facilitate the emergency use of the scene, dry sand and the covering agent should be stored in the container to prevent be affected with damp, and often check.

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Market conditions of light alloy die casting in China

     After decades of development, China has become one of the major powers of production and use of die casting in the world. From the number of die casting enterprises, as of the end of 2003, China has all kinds of die casting factory about 5000. Among them, the annual output of more than 1000 tons of about 9%, the annual output of most die casting enterprises is lower than 1000 tons, and the equipment and technology are relatively backward.

     From output of die castings to look at the market conditions of light alloy die casting in China. Along with China's automobile, communications infrastructure, 3C, equipment manufacturing, home appliances, electrical and mechanical instrumentation, light industry and other industries of sustained and rapid development, as well as the transfer of foreign die casting industry to China, making the output of China's die castings is rapid growth in recent years. In 2005, the output of our country's die castings was about 864200 tons, ranking third in the world.

     Light alloy die casting industry as the basic industry of the national economic development has the vital role in the whole industry.

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The design of die casting mold making process

     The design of die casting mold making process is to lay the foundation for the design of die mold structure, its focus is starting from the die casting, combined with the characteristics of die casting production carries on the analysis to the structure of die casting, determine the process plan and required the use of die casting machine type. The main job is:

Obtain the necessary information and data and study it.

Analysis of parts drawing of die casting.

To determine the machining parts, machining allowance and processing measures and locating datum.

Design of die casting process according to spare parts.

Select die casting machine type.

Draw the blank diagram of die casting part.

     The design of die casting mold making structure is based on process design, and it is determined the overall structure of die casting die and the detail and technical requirements of every parts. Its contents include: Design of die casting mold overall structure, the details design of die casting mold, verification of die casting die.

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The production process of metal stamping parts factory

     Metal stamping is also known as the sheet metal stamping, the applied force on sheet metal by punching machine and mould, so that its plastic deformation or separation, obtain the desired shape and size. Stamping and forging are plastic working, known as forging and stamping. Metal stamping parts factory production process can be divided into the separation process and molding process.
     The separation procedure is also called blanking, which is designed to separate the stamping parts from the sheet material along a certain contour, while ensuring the quality of the separated section.
     The purpose of the forming procedure is to make the sheet metal plastic deformation under the condition of not destroying the billet, obtain the desired shape and size.
     In the actual production, it is often a variety of processes apply to a metal stamping workpiece. Cutting, bending, cutting, stretching, bulging, spinning, correction is the main stamping process.

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Development trend of car die casting parts manufacturer

    Nowadays, people on the demand of car tends to high performance, low pollution, low energy consumption etc.. There are two ways of reducing the energy consumption of the car: one is improving the dynamic system and the second is the lightweight of the car. To achieve lightweight, the most effective way is to use lightweight materials to manufacture automotive parts. In the seventies of the 20th century, the car die casting parts manufacturer uses the aluminum alloy casting to replace the iron casting is the best choice, and all the rage. At that time, the automobile manufacturing industry, die casting parts is the most important in all kinds of aluminum alloy parts. As a result, the important parts of the automobile adopt the practice of aluminum alloy die casting is popular in all countries.
    With the European and American countries to increase energy saving and emission reduction policies, the requirements are becoming higher and higher for the automotive industry. Now, looking for more light material than aluminum alloy die castings to make automotive parts, become one of the research and development direction. It is worth mentioning that, in the past ten years, some of the leading die casting parts manufacturer in the automotive industry that they proposed the idea of using magnesium alloy to manufacture parts, and has achieved a certain effect.

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The surface treatment of zamak die casting mobile phone shell

   The surface treatment of the zamak die casting mobile phone shell, the more mature method has these:
   Galvanic plating: galvanic plating trivalent chromium white bright surface, galvanic plating trivalent chromium black bright surface, galvanic plating imitation titanium bright surface. These colors can also be made of fog surface effect by sand blasting and pearl sand. (The machining allowance for galvanic plating is 0.07mm per surface).
   Vacuum plating(PVD): after the galvanic plating as a base you can do the vacuum plating of these colors, such as IP black, IP gold. At present, the vacuum plating of these two colors is relatively stable, and other colors need UV protection layer.
   Spray: a lot of color can be sprayed on the zamak die casting compared with the plating. The common color all can be used for zamak die casting mobile phone shell. (For battery cover baking varnish, if the battery cover surface has the pattern or pastes the piece, should pay attention to the phenomenon of oil accumulation.  The machining allowance for spray paint is 0.06mm per surface.)

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The advantages of auto magnesium die casting

In the automotive industry, the auto magnesium die casting has these advantages:
Light weight;
Product integration, 30~60 parts can be integrated into a piece of die casting;
Since the elongation rate of AM series magnesium alloy is high, it can increase the impact resistance and the storage energy of the airbag.;
Reduce machining costs and parts assembly costs;
Reduce vibration and noise;
Reduce the amount of parts inventory;
Improve the rigidity of the car;
Improve the recovery of the product;
Increase product design flexibility.
Now many well-known automobile companies are using magnesium die casting, such as General Motors, Mercedes Benz, Chrysler and so on.

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Development direction of die casting manufacturers in China

    The development direction of die casting manufacturer in China is the most notable in the two aspects of industrial structure and technology trend.
    From the industrial structure, the number of professional die-casting factory will increase and gradually increase the size, some will extend the follow-up processing services; die casting enterprise is the mutual merger, consolidation, and attachment of the trend; joint venture, foreign investment, joint venture, partnership and etc. in the form of die casting enterprises will increase; a portion of the die casting manufacturer consider joining the fleet procurement company, become a member of the supplier and manufacturer and contractor which is composed of intensive formation set of company of. In addition, many parts suppliers will set up their own factory.
    From the technical trend, the main trends are the following:
The process of die casting is gradually improved in theory and will be improved in practice.;
The detection technology of die casting technology will be popularized and improved.;
The degree of automation in the process of die casting production is gradually perfected, and is becoming more and more popular.;
The application of computer technology is more extensive and in-depth;
The technology and technology of large die castings gradually mature;
The application of vacuum die casting is further expanded.;
The mold cavity material has great progress, new material progress;
Magnesium alloy die castings will have a substantial growth;
The application of rapid prototyping model design becomes a new hotspot.;
New alloy varieties and materials are opening up new way for application of die casting.;
There are new breakthroughs in semi-solid metal forming technology.;
Extrusion casting will expand the application field of die casting;
Cultivate complete die casting unit will become the main mode of die casting production.

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The abnormal situations of zinc die casting during production

    The abnormal situations of zinc die casting during production are these:
    Voids: in die casting filling process, because of presence the trapped gas, material impurities and shrinkage stress caused the emergence of holes.
    Flow liner: in the die casting process, because the mold temperature is lower or two different temperature materials mixed together to form flow liner.
    Bubble: in the die casting process, the mould temperature is too high and have voids, resulting in product surface bulge.
    Deformation: zinc die casting product thermal stress or when the demould, the uneven force caused the product shape to change.
    Lack of material: product demould is not smooth, some are adhesion on the mold.
    These conditions are related to the factors such as alloy material, die structure, product structure, feeding port, mould exhaust ect., which need to be solved together with these factors.

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Precision Core Pins and Sleeves

    Yize Mould is engaged in offering precision core pins and sleeves that can efficiently eject plastic and alloy products from molds. Manufactured with good quality metals, they are used to ejector out the moulds after solidification. Custom core pins are made from metals, which are procured by reliable and reputed vendors. We offer core pins and sleeves as customized options based on the client’s requirements.

    We are one of the reputed suppliers of precision core pins and sleeves which is sourced from the certified and reliable manufacturers and vendors. Our core pins and sleeves are thoroughly checked and tested on various required parameters during the procurement process to ensure that they are flawless in all aspects and comply with the international quality standards.

    Dongguan Yize Mould Co.,Ltd. is here to make your job easier, faster and more profitable every step of the way.All the while, you can rest assured that our products are backed by a long-standing tradition of rigorous quality systems that provide you with a 100% satisfaction guarantee.Yize team is here to serve your!Contact us today.

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High Quality Precision Mould Parts

    Dongguan Yize Mould Co.,Ltd.'s mission is to be an integrity company that provides high quality precision mould parts and on-time delivery that will continually exceed our customers' expectations.

    Yize have over 80 colleagues working in the factory of  800㎡. Among them,we have 3 advanced engineers,2 precision mould parts designers, 1 mold designers,6 are QC personnel.

    It is the goal of our company to provide our high quality precision mould parts around the world ,delivered on-time, continually striving to improve. Yize believe that it is our value to achieve this goal and to be the top China precision mould parts manufacturer.Looking for high quality precision mould parts,Yize Mould is your best choice!

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How to solve the problem of aluminum die casting surface strain

     The characteristics of aluminum die casting surface strain:
(1)The opening direction along the casting surface is line strain marks, there is a certain depth, the entire surface of serious injury;
(2)The metal liquid and the mold surface stick and, cause the casting surface lack of material.
     Produce reason:
(1)The mold cavity surface has the damage;
(2)The direction of the mold release has no inclination or inclination is too small;
(3)The mold release is not balanced;
(4)The mold is loose;
(5)The casting temperature is too high or too low, high temperature led to the adhesion of liquid alloy mould;
(6)The stripping agent effect is not good:
(7)The iron content of less than 0.8% in aluminum die casting materials;
(8)The cooling time is too long or too short.
     Treatment method:
(1)Repair mold surface damage;
(2)Correction of inclination and improve the mold surface finish;
(3)Adjust the top lever, balance the push out;
(4)The fastening mould;
(5)The control of pouring temperature and mold temperature at 180~250 °C;
(6)Replacement release agent;
(7)Adjust iron content of aluminium alloy;
(8)The adjustment of cooling time;
(9)To modify the gate, change the direction of liquid aluminum.

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How to keep the temperature of magnesium alloy die casting mould

     In the die casting production, stable mould temperature is favorable for the production rhythm and casting quality and mould life. And compared with aluminum alloy, magnesium alloy heat capacity is small, so most aluminum alloy die casting mold often need to use water cooling, the magnesium alloy die casting mould needs to be heated to meet the normal production, especially the production of certain thin-walled parts. Some die casting factory to heating mould with flame gun, this method is not suitable for magnesium alloy die casting. Because it is hard to guarantee the mold temperature uniformity, the mold because the hot and cold uneven and produce cracks. And because the latent heat of magnesium alloy is low, when production the thin-walled parts in order to maintain stable production and good filling conditions, you need to continuously heat the mold to maintain the mold temperature stable. For magnesium alloy die casting, the most ideal heating way is uses the mold temperature control machine to heat up the mold.
     The mold temperature control machine uses the High thermal conductivity medium, can pass the heat to the mold in a short time. Mold temperature machine commonly used has two kinds, one is the hot water mold temperature control machine, the other is a hot oil mold temperature control machine. In the case of sealing heating, due to the boiling point of water, the maximum temperature of the mould temperature can only reach 140 ~160. High temperature liquid magnesium and water will react violently, if the high pressure cooling water leak may cause explosion risk. When the magnesium alloy die casting, the mold temperature usually must remain at 180 °C ~280 °C. Therefore, the hot water mold temperature control machine is seldom used in the magnesium alloy die casting. Hot oil mold temperature control machine is often used to magnesium alloy die casting production, the heat conduction oil boiling point is higher, use temperature is higher than that of water, to the mold heat is more uniform and constant. The use of hot oil mold temperature control machine temperatures may reach above 300 °C.

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What are the light alloy casting industry model

     At present, the light alloy die casting industry model is divided into three types:
1. Single link manufacturers: small scale, R & D design and production capacity is limited, the product and production capacity are concentrated in the middle and low level.
2. Multi link manufacturers: with a certain size, strong R & D design and production capacity, able to provide the production and finishing of the pressure casting and other services.
3. With core technology and complete industrial chain of precision light alloy die casting manufacturers: have a product design, mold design and production, die casting, finishing, surface treatment, spraying complete industrial chain. This category of enterprises through the provision of product design, manufacturing, assembly and after-sales service to enhance the value-added ability of enterprises.

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The development trend of die casting mould making

     In order to adapt to the user's short delivery time, high precision and low cost requirements in mould manufacturing, the development trend of die casting mould making will toward the development of these several aspects.
(1) Mold design from the experience design stage to the theoretical calculation and computer aided design direction development, CAD / CAM / CAE technology widely used in die casting mold making, make the mould structure is more scientific and reasonable, greatly improve the machining precision of the mold, the production cycle of the die casting mould is shortened, reduce the product development time.
(2) CAD/CAE/CAM die casting mold making is developing in the integration, 3D, intelligent and network.
(3) Improve the standardization of the mold and the standardization of the mold utilization rate.
(4) Die to precision, complex, large-scale direction of development.
(5) Knowledge based engineering technology (KBE).

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The development trend of tool metal stamping parts supplier

     At present, China's metal stamping product exports increased, the tool metal stamping parts supplier also usher in a new pattern of foreign trade.
     1. The structure of the export commodities is further optimized, the export of high-tech products increased significantly. Clip to cutting tools such as wire rope cutting, wire cutting pliers, saw frame, machine repair tools, telecommunications, household combination of tools and set series, steel tape measure, level instrument and other measuring series and socket wrench, impact batch fastening series products. A number of high-tech and high value-added exports of these products gradually replace the original low value-added hardware stamping products, which holds the largest proportion of cutting and group products.
     2. Progress of diversification strategy. Dealers in consolidating original Southeast Asia and America and other traditional markets at the same time, and actively adjust the product management structure, change between subject and object of the sales model, and strive to open up Africa, Europe and other markets.
     3. The strength of our metal stamping parts supplier is increasing. The export of large distributors and dealers integrity of products go hand in hand, both metal stamping products export growth rate far exceeds the general business households.
     4. Homegrown brand processing trade is growing rapidly. China's metal stamping processing trade enterprises should assess the situation and make timely measures, actively participated in the exhibition, improve product quality, increase product innovation, according to the international economic situation to vigorously to create a low carbon products, understand the metal stamping products exports to the EU standards, thus expanding foreign markets, improve our country hardware stamping products in the international market share.

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Status quo of auto die casting parts manufacturer

     Die casting industry is one of the important supporting industries in the automobile industry, and has been closely related to the development of automobile. In recent years, the rapid development of the automobile industry has led the development of the auto die casting manufacturers, and has given its broad development prospects. Now, with the development of automobile manufacturing technology, die castings are also facing new technical challenges, the structure of die casting industry is undergoing tremendous changes.
     The application of die casting is very wide, and it involves a lot of products and industry categories. In all these applications, the automobile industry is ranked first in the number of large varieties, strict requirements, high quality and high metal materials, etc.. For a long time, the automobile industry has been the biggest market in the die casting industry. In recent years, the development of China's automobile industry has been pushing the die casting parts manufacturer into a new development period.

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How to solve the defects of zamak die casting

    In the die casting production the quality problem encountered are many, and its reasons are also many aspects. We must make the right judgement on the quality of the casting. Find out the real cause and propose effective measures to improve the casting quality.
    Here we list the defects of zamak die casting and the corresponding solution.
1. Cold lattice. Improve the temperature of material temperature and mould, press the injection speed, modify the injection port and improve the exhaust function.
2. Flow mark. It is necessary to improve the temperature of feed liquid, the temperature of mould, the pressure of injection, reduce the dosage of the release agent, when necessity may consider the revision mold feeding direction or the ingate area.
3. Porosity. Zamak die casting material can not have oil, water and dirt, prevent foreign gas into the melt. After the melting of raw materials for refining to remove gases, temperature is not too high.
4. Crack. Reduce the time of holding the pressure, improve the mold temperature. If the problem is not solved, then check ejection angle, distribution of mold thimble, analysis wall thickness, avoid sharp change in wall thickness and lead to excessive stress.
5. Shrinkage. To increase the ratio of pressure, increase the opening time, reducing pouring temperature. If the structural design of the workpiece is caused, you need to increase the partial pressure or modify the structure design.
6. Burn mold / Buckle mold. Appropriate reduction of material temperature, mold temperature, and injection speed. Appropriate multi injection mold release agent on firing parts. In the mold, the R angle is increased, so that the mold filling is more stable, and avoid directly impacting cavity side wall. Feed head direction and size inspection, when necessity the fever buckles the spot to make the removable structure. Uses high tech coating, increases this spot degree of hardness and the intensity.

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Flame proof technology of magnesium die casting melt

    Salt flux. Salt solvent at a temperature of 400 °C, in the molten state covering on the surface of the magnesium die casting melt, cut off the magnesium liquid in contact with the air, preventing magnesium oxidation reaction, salts, based on the carnallite and coupled by MgCl2 and KCl composed of low melting point eutectic mixture, adding high melting point fluorite powder (CaF2) about 20%. In addition as the outer cover and the melt purification. Cover the protective effect of salt can be maintained at 800 °C. The disadvantage of the salt flux is in contact with moist air to produce corrosive chloride and hydrochloric acid gas formation, have great effects on machinery and equipment, and working environment. In addition, the salt flux is easily formed in the inclusion in the casting, casting quality damage.
    Inert gas. At present in the industrial application of a large number of nitrogen and argon can be used to protect the magnesium die casting melt, the purpose of which is to cut off the oxygen source, nitrogen can prevent combustion, and Mg slow reaction, generate powderlike Mg3N2 membrane, the door temperature below 650 °C and Ar gas will not be and mg occurred reaction, but there are still mg evaporation.
    Inhibitory element. The elements of the inhibition are Be, Ca, Zn. Beryllium have a high diffusion velocity in magnesium die casting melt,The generated BeO has high thermodynamic stability and small volatile tendency. BeO at the surface of the melt formation pressure stress, in the melt coverage have enough BeO, density coefficient is 1.68, played the role of a good protection.
    Reactive gas. SO2 and SF6 can be used as reactive gas for the protection of molten magnesium alloy die casting materials, temperature up to 740 °C. Consumption of SO2 in the atmosphere accounted for only 1% of the total volume, in the foundry workshop as protective gas cost minimum, but has the following disadvantages: in and exposed to the air generated by the reaction of sulfuric acid and the formation of gaseous SO3 and the machine and peripheral equipment to promote corrosion. The use of quality steel for all equipment accessories and pipes. -- SO2 and SO3 are toxic and irritating odor, harmful to human health. SO2 and SO3, at very low concentrations, also have good protective effect and SF6 non-toxic, SF6 and molten magnesium contact together constitute a MgF2 dense protective layer.

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How to choose the plant locations for die casting manufacturer

    How to choose the plant locations for die casting manufacturer, need comprehensive survey of the geography, geology, climate conditions, raw materials, fuel and power supply, transportation and other ancillary industrial supply, etc.. Ensure convenient transportation, abundant raw materials, water, electricity, gas and other energy resources, and supporting industrial sound and maximally save manpower, material resources, transportation, energy and environmental protection cost. Die casting manufacturer plant scale, determined according to their own economic conditions, the production task and future prospects for development, must can meet current production needs of enterprises, and for the future development of leaving enough space. For large die casting project, can installment investment, to make full use of the capital and human.

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Zinc die casting production parameters and requirements

    The zinc die casting production generally used hot chamber die casting machine, its production parameters and requirements are as follows:
1. The furnace temperature: production, set to 410 °C to 430 °C;
2. Gooseneck temperature: production, set to 380 °C to 420 °C;
3. The nozzle temperature: set at between 400 °C to 440 °C production;
4. The hammer head and material pot coordination: playing material without stacker;
5. Fever cake: heat at the contact with the plane cake feeding pot agreement, no distortion, no alloy material adhesion, corrosion;
6. fever sets: surface clean and free of corrosion;
7. alloy surface: no dross, keep it clean, alloy crucible level of not less than one inch;
8. Cooling water pressure: Make sure the pressure is 3 ~ 5Kg / cm²;
9. Stands carrying water: Make sure the outlet temperature below 30 °C;
10. The zinc die casting feeding requirements: zinc raw material plus seventy percent; about 30 percent plus outlet material; high-end products full plus new material.

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The principle of aluminum die casting process

     The principle of aluminum die casting process is the liquid metal quickly into the precision metal mold cavity by high pressure, the liquid metal solidification under pressure and the formation of castings. Cold chamber die casting and hot chamber die casting are the two basic ways of die casting process.  In the cold chamber die casting, molten metal into the pressure chamber by manual pouring device or automatic pouring device, then the plunger forward, the molten metal into the cavity. In the hot chamber aluminum die casting, pressure chamber perpendicular to the crucible, the molten metal automatically flows into the pressure chamber by the pressure chamber inlet. Plunger downward movement, push the molten metal into the cavity through the gooseneck. The molten metal is solidified, open die casting mould, remove the castings, the completion of a die casting cycle.

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Magnesium alloy die casting production safety precautions

     In the process of magnesium alloy die casting production, the most important thing is to keep the site clean, dry. Each boot should be preheated to 150 degrees above the mold, do not spray too much paint spraying, so as to avoid cavity seeper, cause danger. Try not to use cold water to cool down the punch and mould. The punch can use air-cooled, heating and cooling mold generally using high temperature resistant oil. Magnesium alloy die casting punch speed is faster than aluminum alloy die casting, to avoid flying material wounding, sometimes in the die parting face with a flying material baffle, die casting and safety doors must be closed, the operator stand in the parting surface is forbidden. Waste production site must be cleared up, can be placed in a dry non-combustible container. Fly ash and dust also to clean up. From the fire accident around the magnesium die casting the actual occurrence of the factory, more than 50% by the processing of magnesium dust, waste such as cleaning and storage problems caused, some occurred in the processing process, resulting in melting link accidents accounted for about 10%.

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The development advantages of light alloy die casting industry

    Light alloy die casting industry conforms to the development trend of energy saving and consumption reducing. Such as light alloy has the advantages of lightweight, can reduce the car's weight and energy consumption. Light alloy casting with no cutting process, the use of resources recycling, environment friendly technology. The increasing demand for light alloy for electronic products. Lightweight, intelligent development trend of consumer electronic products, light alloy consumption will maintain a rapid growth rate for consumer electronics.
    Cost advantages make light alloy die casting industry is developing rapidly. Light alloy die casting have a variety of preparation process for electronic products. Among them, the aluminum alloy cold forging +CNC integrated molding process, performance advantages, but the cost is high, and the remaining capacity of the supply chain is insufficient. Light alloy die casting technology has a cost advantage, high production efficiency, supply chain capacity is enough. But the die casting products surface treatment effect is poorer, other performance also varies. In the low-end product market competition has become the main battlefield of consumer electronics, forcing manufacturers of electronic products around cost competition. Light alloy casting cost advantage, and it has thin and light performance characteristics, will win more and more market.

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The basic principle of die casting mold making design

    1. To fully understand the relationship between the use of castings and other structural components. When the die casting mold making design, according to the structure and performance of die castings to prioritizing, focus on mold structure and mold process according to the type of processing, reasonable selection of mold surface, cavity number and layout, die casting parts mould release method.
    2. Understand the actual processing capacity of mold. To meet the actual mould design according to the existing technical level of equipment and operating personnel.
    3. To meet the requirements of the mould die casting production process. In accordance with the process requirements of the casting pouring system and exhaust system. Especially the location of the internal gate, the internal gate speed and flow direction, to make the liquid metal flow is stable and smooth and orderly removal of gas cavity, in order to achieve good filling effect and avoid casting defects.
    4. Die casting mold design should meet the requirements of machining process and heat treatment process.
    5. To fully consider the mold temperature change with the precision influence on sliding parts.
    6. Find ways to improve life of die.
    7. Install the mold should be convenient and reliable.
    8. The die casting mold making design to allow sufficient repair modulus.
    9. Die casting mold making as far as possible the use of standardized, universal parts to shorten the production time.

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The processing requirements of drawing metal stamping parts

    Metal stamping is a widely used product in our daily life. With the development of science and technology, people more and more requirement of metal stamping parts. Especially in terms of quality and technology requirements are very high.
    The drawing metal stamping parts requirements:
    Drawing parts the shape should be simple, symmetrical, the depth should not be too large. The drawing number is minimal, easy forming.
    The drawing radius does not increase in process conditions. Otherwise it will increase the number of drawing and shaping work, also increased the number of molds, and easy to produce waste and improve cost.
    Metal stamping parts quality requirements are very strict, so the metal stamping parts supplier must strictly control the shape and size of stamping parts.

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Precision die casting parts manufacturer of production notes

    Precision die casting parts manufacturer need to pay attention to the following several points in the production process:
    1. From the beginning of the procurement alloy ingot, the supplier must have strict standards for components. High quality alloy material is the production of high quality castings guarantee.
    2. Alloy ingot stacking area to ensure clean, dry, to avoid long time exposure to moisture and generated white rust or be dirt pollution of the factory, otherwise it will increase the loss of metal. The clean factory environment is very useful for the effective control of the alloy composition.
    3. Ratio of new materials and returns, returns no more than 50%, new materials : old material =70:30. Continuous remelting of the important elements in the alloy decreased gradually.
    4. When drainage opening material was remelted, must strictly control the remelting temperature of not more than 430 °C, in order to avoid the loss of alloy elements.
    5. When remelting cannot have the tin galvanizing, the soldering tin and the lead polymer.
    6. If the condition allows, die casting parts manufacturer can be used to centralized furnace melting alloy material, the alloy ingot and the returns ratio is uniform, the flux can be effectively used, the alloy composition and temperature uniformity and stability. Electroplating waste and fines should separate melting.

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The reason of zamak die casting parts have holes

     The holes are two kinds of zamak die casting parts, mainly is the blowhole and shrinkage hole, the blowhole is often round, and shrinkage hole mostly irregular.
         (1) the blowhole cause: the liquid metal in the mold filling, solidification process, because the gas invasion, leading to the casting surface or internal holes. or is out of the volatile gas of coating. or the alloy liquid gas content is too high, the coagulation precipitation. When the mold exhaust is not good, these adverse factors will lead to the formation of pores of zamak die casting parts.
         (2) the shrinkage reasons: the solidification process of liquid metal, because of the volume reduction or the final solidification position not feeding of molten metal and the shrinkage hole. Casting uneven thickness or local overheating, causing a slow solidification position, volume shrinkage is formed on the surface of the concave position.
         If the zamak die casting have the blowhole and shrinkage hole, on surface treatment, hole may enter the water, when the painting and plating after baking, hole gas heating expansion; or hole internal water becomes vapour, volume expansion, thus lead to the casting surface blister.

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About magnesium die casting material stickness

         Die cast alloy stick refers to adhere to the walls of the mold cavity. This phenomenon is a great influence on the die casting process.
         The solubility of die material in the molten alloy. Magnesium alloys have an advantage in this regard. The main alloy elements of die steel are insoluble or slightly soluble in magnesium alloys, such as iron, cobalt, manganese, aluminum, calcium, in addition to the nickel. So magnesium die casting material don't sticks mold.
         The strength of castings in the ejection temperature. About 300 °C, The strength of the magnesium alloy is about half of the aluminum alloy, As long as the cavity surface is no problem, the launch is balanced, no shear stress, sufficient to ensure the castings mould relese in this hot strength.
         Adhesion coefficient between the casting and the cavity surface. When the roughness between rubbing surface is 30/um and the rubbing speed is 0.1m/s, the adhesion coefficient between aluminum and steel is 0.1, while the adhesion coefficient between the magnesium and steel is 0.05. So magnesium die casting can use minimum demoulding inclination, and can obtain higher accuracy.

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The characteristics of China die casting manufacturer

      The one of the characteristics of China die casting manufacturer is the application of a wide range of die casting products. In Japan and the United States, the proportion of automobile die casting up to 80%~90% in die casting total, but only about 50% die castings in China. Die casting products, another part is used in motorcycles, agricultural vehicles, electric bicycle. This greatly reduces the influence of automobile market for die casting market.
      In China, die casting manufacturer the service object and the proportion: Automobile and motorcycle is 62.8%; the hardware and toys accounted for 16%; electrical and electronic products accounted for 11.8%; general machinery and other industries accounted for 9.4%.

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Zinc alloy die casting parts should pay attention to the problem

         Attention should be paid to the use of zinc alloy die casting parts process problems:
         Poor corrosion resistance.  When the impurity elements of lead, cadmium and tin to exceed the standard in the alloy, leading to the casting of aging and deformation, showed the volume swell, the mechanical properties decreased significantly especially plasticity, the long-term use possibly can rupture. Lead, tin, cadmium solubility is very small in the zinc alloy, so focus on the grain boundary and as cathode, high aluminium content solid solution as the anode. The water vapor (electrolyte) under the conditions of existence, to intergranular corrosion. Die casting due to intergranular corrosion and aging.
         Timeliness. Zinc alloy microstructure is mainly composed of zinc solid solution contains aluminum and copper and aluminum solid solution contains zinc. Their solubility decreases with the temperature decrease. But because the pressure of the solidification of the casting speed, therefore to room temperature, the solubility of solid solution is saturated. After some time, the saturation phenomenon will gradually lifted, and the shape and size of the casting is slightly change.
         Zinc alloy die casting is in high temperature and low temperature (0 DEG C) use of working environment. Zinc alloy has better mechanical properties at room temperature. But in the high temperature tensile strength and low temperature impact properties were significantly decreased.

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Application of aluminum die castings

     Aluminum and aluminum alloy has good fluidity and plasticity, so it can be made into various shapes of complex aluminum die castings. Aluminum or aluminum alloy casting parts with high precision and surface finish, which reduces the amount of mechanical processing of castings in the very great degree, and greatly reduce the amount of labor, but also save electricity and metal materials.
     Because of intrinsic quality and external quality is high, aluminum die casting is widely used in automobile, internal combustion engine production, motorcycle manufacturing, motor manufacturing, transmission machinery manufacturing, precision instruments, landscaping, construction, electric power and other industries, to become the new darling of the die casting industry.

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The formation reasons of magnesium alloy die castings porosity

    The formation reasons of porosity of magnesium alloy die castings, one is  because the gas is separated from the liquid during the cooling process, mainly hydrogen, the other is into the air in the casting process. The ability of magnesium dissolved hydrogen is very strong, even if only a very small amount of water in the ingot, may also be because the water is reduced and the absorption hydrogen. However, the nitrogen generating nitride, oxygen to produce oxide. Therefore, the effects of air is smaller, The temperature of the air is concerned with the gas content, so the magnesium alloy die casting materials must be thoroughly dried before they can cast furnace melting.

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What are the light alloy die casting materials

    According to the different raw metal of die-casting, light alloy die casting materials can be divided into aluminum alloy die casting, magnesium alloy die casting, zinc alloy die casting, copper alloy die casting and so on.
    Aluminum alloy is light, good abrasion resistance, high mechanical strength, good heat and electrical conductivity, and can withstand high temperatures, which are widely used in automobile, communication infrastructure. At present, aluminum alloy die casting production is the highest in the non-ferrous metal die-casting.
    In the commonly used die casting alloy, magnesium alloy is the lightest metal, widely used in 3C products, auto parts and electric tools.
    In the three kinds of non-ferrous metals, zinc alloy is the most easily die casting. It has high toughness, high impact strength and easy electroplating etc.. It is used to Home Furnishing products, 3C products, construction equipment, toys and car parts.

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The development of die casting mold making in China

    Middle period of 1990s to now. The rise of China automobile manufacturing industry, and the rapid development of the world of the technology of the mould, die casting mold making in China industry has been leaping development. Die casting die manufacturing technology of motorcycle parts is becoming more and more mature, large and complex auto parts mold research and development, manufacturing, mold development to the large-scale, complex, the long life.
    Especially in the last two years, the appearance quality of widespread attention and the service life of the die has been significant progress. Application and popularization of CADl / CAM technology, the individual enterprise also uses CAE to carry on the flow and thermal field analysis, the first hardening and then finish machining process is widely used, utilizing three coordinate measuring instrument detection size, assembly, repair the mold in the mold closing machine, application of vacuum gas quenching and other advanced equipment and technology. During this period, basically choose domestic or imported H13 type steel, the mold can be applied to the die casting machine is less than 35000kN, large die can weigh up to 20 ~ 30t.
    At present, die-casting mould of household electrical appliances, motorcycles and other industries can fully meet the needs of the automotive industry, the proportion of domestic die-casting die is more and more big, magnesium alloy die casting mold began developing. During this period, China imports of many large, precision, complex die casting die, at the same time China die casting mould began to export to foreign countries, some enterprises production molds are exported to the advanced industrial countries.

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The quality requirements of bending type metal stamping parts

    Metal stamping parts is very widely used product in our daily life. With the development of science and technology, people more and more high request of hardware stamping parts. Especially in terms of quality and technology requirements are very high.
    The bending type metal stamping parts requirements:
    Bending shape should be symmetrical, the bending radius of not less than the allowable minimum bending radius.
    If parts have hole, to avoid hole deformation when bending.
    Curved edge is too short not easy forming, then the straight part of the bending edge H>2δ. If the requirements of H is very short, the need to set aside appropriate allowance to increase H, cut away the excess metal after bending.
    Metal stamping parts quality requirements are very strict, so the metal stamping parts supplier must strictly control the shape and size of stamping parts.

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The development prospects of the automotive die casting parts manufacturer

    The application of die casting in the automotive industry is keeping pace with the times. In die casting market, automotive die casting share significant. Therefore, the development prospects of the automotive die casting parts manufacturer are also very impressive.
    According to the relevant statistics: the industrial structure of different countries, the auto industry's share is not the same, but the proportion of automobile castings is among the best in the die casting industry. Since the end of the 20th century to the beginning of the 21st century, the proportion of the automotive die casting is 48~80% in the total amount of die casting. For example: Australia accounted for 80%, Japan accounted for 79%, Spain 65%, Chinese 64.5% ( containing cars and motorcycles), Germany 61%, India 60%, Canada 49%, USA 48% etc.. According to recent reports, this proportion has risen to around 75% in America.
    Auto parts casting have such great share in the die casting industry, so the automotive die casting has the very important status for die casting parts manufacturer. As for China, in recent years the ratio remained at 65 ~ 75% (including automobile, motorcycle and other vehicles), in terms of the auto parts, this proportion increases year by year.

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What are the zamak die casting material types

Commonly used zamak die casting material types:
    Zamak 3: good fluidity and mechanical properties. Applied to the requirements on the mechanical strength is not high castings, such as toys, lighting, decoration, electronic component.
     Zamak 5: good mobility and good mechanical properties. Applied to the mechanical strength has certain requirements of the castings, such as auto parts, electrical accessories, machinery parts, electrical components.
    Zamak 2: used to have special requirements, high mechanical performance requirements, the precision requirement of mechanical parts on the hardness.
    ZA8: good liquidity and size stability, but poor liquidity. The workpiece is applied to the casting of small size, high precision and mechanical strength requirements, such as electrical parts.
    Superloy: this zamak die casting material mobility is the best, applied to the workpiece casting thin wall, large size, high precision, complex shape, such as electrical components and the box body. Zinc alloy with different physical and mechanical characteristics of different, so choose the space provided for die casting design.

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