Blackening of aluminum alloy die castings.metal injection molding companies

　　With the continuous development of the die-casting industry, the application of aluminum alloy die-casting parts is becoming more and more widespread. However, due to the lively nature of aluminum alloy, although it has good fluidity and casting performance, it is easy to turn black during use. Today, let's popularize the five reasons that cause aluminum alloy die-casting parts to turn black:

　　1. The process design is unreasonable.

　　Improper handling of aluminum alloy die castings after cleaning or pressure inspection creates conditions for mold and blackening of aluminum alloy die castings, accelerating the generation of mold.

　　2. Inadequate warehouse management.

　　Storing aluminum alloy die castings at different heights in the warehouse results in varying levels of mold growth.

　　3. Internal factors of aluminum alloys.

　　Many aluminum alloy die-casting manufacturers do not perform any cleaning treatment or simply rinse with water after the die-casting and machining processes, which cannot achieve complete cleaning. The surface of die-casting aluminum has residual corrosive substances such as release agents, cutting fluids, saponification liquids, and other stains, which accelerate the rate of mold growth and blackening of aluminum alloy die-casting parts.

　　4. External environmental factors of aluminum alloy.

　　Aluminum is a reactive metal that is prone to oxidation, blackening, or mold under certain temperature and humidity conditions, which is determined by the characteristics of aluminum itself.

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