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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