Through the contrast tests, it is considered that alkaline zincate bath with DPE-3 or ZB-80 as brightener is better than ammonium chloride bath for the conversion.

• 通过对比试验,认为采用DPE-3、ZB-80为光亮剂的锌酸盐镀锌比铵盐镀锌的钝化效果好。