金属的脱脂与除锈技术(1)

Degreasing and Derusting on Metals

介绍金属表面前处理的脱脂与除锈对镀层质量的影响;脱脂方法的分类,金属表面沾污物的种类、碱液浸泡脱脂技术;除锈方法的分类,金属表面生锈的机构和不同种类金属的腐蚀产物,酸洗除锈和电解酸洗除锈技术.

This article gives a general statement on the process of degreasing and derusting during the course of pretreatment to metal surface, both degreasing and derusting having a decisive effect on the quality of coating. It also gives a detailed introduction to the classification of the methods for degreasing, to the sorts of contaminates on the metal surface and to the technology of soak alkaline cleaning in particular. As for the process of derusting, it introduces the classification of the methods for derusting, the rusting mechanism on the metal surface, rusting products from different kinds of metals and particularly the technology of derusting by acid pickling and electrolytic pickling.