Defect description: The gas is drawn into the holes formed in the die-casting with a regular shape and a smooth surface.

cause:

1. Poor shape design of sprue
2. The velocity of the gate is too high to produce turbulence
3. Poor exhaust
4. Too much gas in the alloy liquid
5. Excessive machining allowance

Improve methods:
1. The cross-sectional area of the nozzle of the straight gate is larger than that of the inner gate
2. Increase the thickness of the gate to reduce the filling speed
3. Open overflow groove at the tail of the cavity to avoid blockage of the exhaust passage
4. Refining the melt
5. Modify the smaller processing allowance

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.