一、涂装预处理的目的和内容涂装预处理是涂装工艺的十分重要的步骤,然而常常为人们所忽视。对于机械产品涂装,无论是花费的劳动量还是费用,涂装预处理都占其中35％～55％。依据机械产品的类型及其涂装工种不同,所占比例有所不同。 First, the purpose and content of coating pretreatment Pretreatment is a coating coating process is a very important step, but often overlooked by people. For mechanical products coating, whether it is the amount of labor or costs, paint pretreatment accounted for 35% to 55%. According to the type of mechanical products and their coating different types, the proportion of different.