刚加工出来的零件则表面仅仅存在薄锈，除锈清洗的方法较为简单容易。餐费时间过长过遭受氧化反应介质侵蚀，表面的锈层较厚较严重，除锈比较困难复杂。因此，金属表面除锈是表面处理中一项重要的施工内容，也是金属表面处理中一道重要的工序。
钢铁表面的氧化皮也是锈的一种，是氧化铁的另一种存在形式，它在钢铁表面是较厚的片状体，主要是高温加工过程中生成的。例如钢板的热轧过程中在高温下的氧化作用，生成了与钢铁表面结合牢固的氧化铁，同时有较厚的膜层，是一层具有化学结合力与金属表面结合强度极高的氧化膜层。
在钢铁工件的热处理及焊接等高温操作过程中也同样产生氧化皮。由于氧化皮和本体金属表面的结合力强度高，所以要彻底清除比较困难，一般采用酸浸渍使其松脱之后，再进行冲洗使其脱落，也可以采用机械冲刷或超声波清洗等方法。
physical methods to remove the handiwork. But the dirt residues high strength combined with many and metal surface, the cleaning is difficult, also will be complex, there must be a set of specialized cleaning technology to handle can be thoroughly cleaned, the metal surface clean to degree of post treatment process requirements.
The vast majority of the surface treatment of metal parts have the grease, oil, this is because in the process of various processing with all need oil material. Such as lubricating and cooling fluid parts cutting, grinding and processing, lubricating oil for steel plate in the process of cold rolling, heat treatment of quenching oil. Need of rust-preventive oils after processing of metal parts, in the warehouse storage to have contact with the grease grease package etc.. These oil and metal surface binding degree each are not identical, some thin oil with medium, is simple and easy to clean, some thick oil is more complex, and its surface rust, dust, iron filings with the surface of the metal
RPS-5I耐磨防锈纯锰系磷化剂（72h盐雾）
1，本品为纯锰系磷化液，配槽最佳温度为95-98度，最低不能低于90度，与水稀释，比例为1:10，时间控制在10-15分钟
2，30kg/桶可出货2-4吨，很耐用，成本在4-5毛/公斤左右，高质量来算。
3，本磷化液的膜层厚度为3-12微米，■耐盐雾为■72-96小时■以上，磷化后实物图颜色为■灰黑或纯黑色■，对于紧固件，齿轮，轴承，链轮均能达到颜色要求.
4.本磷化液能让碳钢工件具有■耐磨、■防锈、■膜层细腻、■自润滑的优势特点，免费试用。
5，请知道：本磷化液为不含锌的纯锰系磷化液，品质性能均远优于同类产品，性价比非常高，一分价钱一分货，性能区别于普通磷化液，是您防锈产品的不二之选
