stainless steel stamping manufacturers.How can aluminum die casting manufacturers solve the problem of casting black spots

　　How can aluminum die casting manufacturers solve the problem of casting black spots

　　Aluminum die casting manufacturers will find black spots on the surface of the die casting when polishing the die casting, why does this happen? How to solve the aluminum die casting manufacturers? Next, let's learn about casting black spots.

　　Black spots on the surface of die casting may be because too much release agent is sprayed, or the organic content of release agent is too high, there is another possibility, that is, the formation of silicon oxide or alumina, then how to solve the black spots in die casting?

　　First, use fresh aluminum ingots.

　　Second, reduce the concentration of spraying agent.

　　3. Prevent dirty gloves from polluting the surface of die casting parts.

　　4. The storage location of the die casting parts should be kept ventilated and waterproof to prevent the die casting parts from becoming moldy and black.

　　Fifth, choose a better mold spraying coating, eliminate bad alkaline coating, in order to prevent increased water absorption, resulting in mold and black die casting.

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