铝及其合金镀银的预处理一般采用浸锌酸盐法,其工艺较繁而且合格率低,故经济效益较差。我们采用镀锌预处理,方法简单、镀液稳定。只要严格按照工艺规程操作,合格率可达100％,其结合力与前者相同,从而降低了成本、操作方便。 Pretreatment of aluminum and its alloys silver plating zincate commonly used method, the more complex and the process of passing rate is low, it is less economical. We use galvanized pretreatment, the method is simple, the bath is stable. As long as strictly in accordance with the rules of the procedure, the pass rate of up to 100%, the same binding force with the former, thus reducing costs and easy operation.