1. The mold or melting cup is not cleaned thoroughly;

2. If the injection pressure is not enough, it is also necessary to pay attention to whether there is any yielding phenomenon of the dynamic mold during injection;

3. There are issues with the opening of the pouring system;

4. Caused by excessive mold temperature;

5. Improper handling of mold materials;

6. Severe splashing of metal liquid during injection;

7. Problem with release agent: The release agent generally does not penetrate into the die casting. However, low-quality release agents can cause corrosion on the surface of die-casting parts and penetrate into the interior; If the release agent emits a large amount of gas, it will be drawn into the die casting to form pores.

Keywords: precision die-casting zinc aluminum alloy die-casting stainless steel die-casting precision casting aluminum alloy die-casting zinc alloy die-casting die-casting processing Yujiaxin