Defect description: The deflated parts appear on the smooth surface of the casting, and the surface is naturally cooled

cause:
1. The wall thickness difference is too large to produce hot joints
2. Large shrinkage
3. The local temperature of the mold is high
4. When the metal liquid is filled, the local gas is not discharged and is compressed
5. Formed between the metal surfaces of the cavity

Improve methods:
1. Improve the casting structure so that the wall thickness tends to be uniform
2. Sampling and testing alloy density, refining alloy
3. Use temperature control device or spot cooling to force cooling
4. Improve exhaust conditions

During the production of aluminum alloy die-casting parts, pay more attention to the changes in the details of the die-casting mold and die-casting machine, and take good methods as a habit, and the quality will be guaranteed.

Ningbo Hongxin Precision Machinery Co., Ltd. is a professional manufacturer of die casting, prototype, injection molded parts and CNC parts, welcome to contact us to discuss project development.