How can we improve the color change of aluminum alloy casting castings

　　1. Use unsuitable despairing agent

　　2. Excessive dosage dosage, local accumulation

　　3. The graphite in the lubricant containing graphite falls into the surface of the die -casting part

　　4. The mold temperature is too low, and the problem of metal liquid is too low, resulting in irregular solidification

　　Then the reasons for the transformation and spots caused by the above -mentioned aluminum alloy pressure castings, and teach you to solve it:

　　1. Due to the unsuitable despairing agent, replace the molding agent

　　2 Due to excessive decrease agent, we must strictly spray the amount and standardize spray operation during the operation

　　3. Because the graphite falls into the surface layer of the casting, it is necessary to control the modular temperature and keep the heat balance

　　4. If the temperature is too low and irregularly solidifies, the temperature of the metal liquid should be controlled.

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