叙及了适用于钢铁、锌或铝及其合金涂装前处理的锌钙盐磷化法。此磷化法特别适合作阴极电泳涂(?)的前处理。与此有关的磷化液由锌、钙磷酸盐、催速剂和别的添加剂组成。本磷化法具有如下特点: (1)金属表面磷化膜的生成与采用的脱脂剂、洗清剂完全无关; Described and applied to steel, zinc or aluminum alloy and its coating pretreatment of zinc-calcium phosphate method. This phosphating method is particularly suitable for cathodic electrocoat (?) Pretreatment. The phosphating solution associated therewith consists of zinc, calcium phosphates, accelerators and other additives. The phosphating method has the following characteristics: (1) the formation of metal surface phosphating film and the use of degreasing agent, washing agent has nothing to do;