precision sheet metal fabrication

　　Interpretation of the current predicament faced by aluminum alloy shell processing

　　Aluminum alloy shell processing is an application of aluminum alloy die-casting technology. With the lightweighting of automobiles, aluminum alloy has become a popular material, especially with the vigorous promotion of electric vehicles in China. However, due to the insufficient power of electric vehicles, weight reduction is particularly important, so a large amount of aluminum alloy is needed. However, the current situation of aluminum alloy shell processing is not very good.

　　Aluminum alloy shells are mostly appearance parts that serve the purposes of viewing, protection, and heat dissipation, and all have certain requirements for their appearance. Although aluminum alloy is suitable for die-casting and cutting, its melting point is high, so only cold chamber die-casting machines can be used, and hot chamber die-casting machines with higher production efficiency and better die-casting effects cannot be used. Moreover, the forming effect of aluminum alloy is poor, which is prone to defects such as mold sticking, porosity, and deformation. Therefore, the yield rate of aluminum alloy shell processing is relatively low, and it is difficult to pick out defective products, which will also affect the subsequent processes. This has resulted in most die-casting factories being unwilling to make aluminum alloy die-casting parts, and the surface treatment of aluminum alloy die-casting parts is also troublesome, which is highly praised. Anodizing is rarely done well in China, with a yield rate as low as 30% to 20%, This is not even acceptable to customers, even die-casting factories cannot accept it.

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