Characteristics of mold sticking strain in die-casting parts

Die cast alloys (such as aluminum) adhere to the mold wall and produce scratch marks, which can be torn in severe cases.

Causes of adhesive mold strain

1. The pouring temperature of the alloy liquid is too high;

2. The mold temperature is too high;

3. Insufficient or incorrect use of paint;

4. The surface of the mold is rough during molding;

5. The incorrect pouring system causes the molten metal to directly impact the core or wall of the mold;

6. Improper use of mold materials or incorrect heat treatment processes, resulting in insufficient hardness;

7. Aluminum alloy has too little iron content, less than 0.6%;

8. The filling speed is too fast.

Methods for preventing mold sticking and strain on die-casting parts

1. Reduce the pouring temperature;

2. The mold temperature is controlled within the process range;

3. Eliminate rough surfaces in the mold cavity;

4. Check whether the variety or dosage of the coating is suitable;

5. Adjust the internal pouring channel to prevent the metal liquid from rushing directly;.

6. Check the alloy composition to ensure that the iron content of the aluminum alloy meets the requirements;

7. Is the mold material, heat treatment process, and hardness reasonable;

8. Reduce the filling speed appropriately.