Die casting is a kind of metal forming process, its biggest characteristic is the rapid molding speed, low processing cost, so it has a very wide range of applications in metal processing. The metal parts produced by die casting process are called "die castings". Die castings are widely used in machinery, automobiles, electrical appliances and so on. Aluminum alloy is a common die-casting material, but we must pay attention to different metal materials, die-casting before and after treatment is different. Some netizens said that mold stains often appear in aluminum die castings. What is the reason? Today Furong Precision answers this question for everyone.

Mildew spots are essentially caused by chemical reactions between water vapor and the surface of die castings. The following conditions will accelerate the occurrence of mildew spots:

1. The humidity of storage location is large.

2. The surface of die castings is relatively loose.

3. The corrosion of the die casting cleaning agent is excessive.

4. The die castings do not dry after the corresponding process (such as cleaning, electroplating, etc.).