How to avoid the problem of blisters in aluminum alloy die casting?

Aluminum alloy die-casting products are mainly used in electronics, automobiles, motors, home appliances and some communication industries. Some high-quality aluminum alloy products with high performance, high precision and high toughness are also used in large aircraft, ships and other industries with relatively high requirements. . The main use is still on the parts of some instruments. In the production process, there are sometimes disadvantages such as sand holes, so how can aluminum alloy die-casting avoid the problem of sand holes?

1. Ensure the refining and degassing quality of aluminum alloy profile smelting, use good refining agent degassing agent to reduce the air supply in the aluminum water, immediately eliminate metal oxides such as liquid level sludge and foam, and avoid being brought into the steam again. body into the casting;

2. Select a good release agent, the release agent used should not cause vapor in aluminum die-casting, and have excellent modelling characteristics;

3. Ensure that the exhaust pipe of the abrasive tool is smooth and not blocked, and the exhaust pipe is smooth, to ensure that the vapor in the abrasive tool is completely discharged, especially when the aluminum water converges, the safety channel of the exhaust pipe must be smooth;

4. Adjust the main parameters of aluminum die-casting, and the filling rate should not be too fast to avoid air entrainment;

5. In designing products and stamping dies, attention should be paid to the application of core pulling and refrigeration, and try to avoid the defect of excessive wall difference;

6. For the air outlet that often appears in a fixed position, it is necessary to improve the abrasive tool and the design scheme.