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.
The above article from KENOS official website (http://www.kenos-diecasting.com/) kenosblog1508
The original address: http://www.kenos-diecasting.com/news_show_99.html, reproduced please specify.
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.
The above article from KENOS official website (http://www.kenos-diecasting.com/) kenosblog1508
The original address: http://www.kenos-diecasting.com/news_show_99.html, reproduced please specify.
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