选用金属除油剂注意事项：

Considerations for selection of metal degreasing agents:

1、从所要去除的油污种类角度，如皂化类油污一般采用水基类金属除油剂，非皂化类油污采用溶剂类金属除油剂

1, from the type of oil to be removed, such as saponification type oil pollution generally use water-based metal degreasing agent, non saponification oil pollution using solvent metal degreasing agent

2、从金属材质的角度考虑，如金属材质能否耐酸耐碱，以及如铜、铁等采用水基类金属除油剂等比较容易生锈、氧化、变色。选用金属除油剂应考虑的因素远不止以上两条，也无法一一枚举；应经实验验证综合效果再确定。

2, from the point of view of metal materials, such as metal materials can acid and alkali resistance, as well as copper, iron and other water-based water-based metal degreasing agent, such as easy to rust, oxidation, discoloration. Selection of metal degreasing agent should consider more than two factors, can not enumerate one by one; should be verified by the experiment, the comprehensive effect is determined.