How to deal with the problem of surface coating of die-cast aluminum mold
When we use die-casting aluminum molds to produce various die-casting parts, there will be such a problem that the surface of the die-casting aluminum mold will be dip, which will damage the die-casting aluminum mold processing and waste the die-casting materials. How to solve this problem?
1. Check whether the mold temperature is normal, and properly reduce the casting temperature of the alloy liquid and the mold temperature;
2. Check whether the proportion of the release agent is abnormal, try to replace the release agent, and adjust the spraying position and spraying amount;
3. Polishing the surface of the die-casting aluminum mold, carefully polishing the nitrided mold to prevent the nitride layer from being destroyed, and forming a more viscous condition;
4. Improve the design structure of the pouring system to prevent the alloy liquid from continuously scouring the cavity wall or core;
5. Modify the mold cooling system;
6. Adjust the die casting process parameters, reduce the injection speed appropriately, and shorten the second speed stroke.
7. Try to grind a few horizontal grooves on the moving mold, 0.2-0.3mm. The die-casting parts will be very bright and will not be damaged. This can increase the clamping force of many moving mold sides and bring the die casting to the moving mold. It can solve too many sticking times in the production process.
