某型箱体表面漆膜起泡的原因分析及对策

The Analysis of the Causes of a Certain Type of Body Surface Coating Foaming and Countermeasures

砂型铸造铝制箱体广泛应用于我国军用电子类设备的控制箱中。针对某型砂型铸造铝制箱体表面漆膜在湿热试验过程中起泡和产品合格率低的质量问题,从基材、操作人员、油漆和前处理等4个方面分析,绘制了漆膜起泡的鱼刺因果图,列出了可能引起漆膜起泡的原因,并对各条原因进行了分析、排除及试验验证,找到了漆膜起泡的主要原因,并制定了相应的对策,解决了质量问题,提高了箱体表面的喷漆质量和外观质量,为今后同类产品的加工提供了宝贵的经验。

Sand casting aluminum housing is widely applied in the kind of military electronic control box in China. With a sand mold casting aluminum housing surface film quality problem of the blister and low product qualified rate in the process of hot and humid test, we do the analysis from the base material, operation personnel, paint and. Draw the film blister barb causality diagram, list the reason to the paint film in bubbly, analyze each reason, elimination and test verification, find the paint film is the main reason for the blister, and formulate the corresponding countermeasures. Finally we solve the quality problems, improve the quality of the paint on the surface of the box body and provide valuable experience for the machining of the similar products in the future.