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If the aluminum alloy die castings produced are not handled properly, they will mold and blacken. The common factors that cause the mold and blackening of die castings are as follows:
1. External factors. Aluminum is an active metal. It is extremely easy to oxidize under certain temperature and humidity conditions, and it will turn black or moldy. This is determined by the characteristics of aluminum itself.
2. Internal factors. Many manufacturers do not do any cleaning or do not clean them thoroughly after die casting and machining processes, leaving corrosive substances such as release agents and other stains on the surface of die-cast aluminum, which accelerates the growth of mold spots on aluminum alloy die castings.
3. Improper selection of cleaning agents, strong corrosiveness of cleaning, causing corrosion and oxidation of die castings.
4. Inadequate storage management. When the warehouse is stored at different heights, the moldy conditions are also different.
Through the above points, I believe you can better understand the reasons for the mold and blackening of aluminum alloy die castings.
