阅读说明：本技术 皮膜剂、金属件及其表面皮膜化处理方法 (Coating agent, metal piece and surface coating treatment method thereof ) 是由 王饶玲 于 2017-05-27 设计创作，主要内容包括：一种皮膜剂、金属件及其表面皮膜化处理方法。皮膜剂用于金属件表面预处理,其包括如下质量含量的成分：1-10g/L硝酸铬,0.1-5g/L氟钛酸钾,0.2-10g/L植酸,0.01-0.2g/L氟化氢铵,0.1-5g/L硝酸钴。该皮膜剂形成的膜层耐蚀性好,且与涂料结合力强,可作为喷涂等后续处理的良好基底。并且对工件处理后,工件表面的膜主要为三价铬,比六价要环保,并且工件表面色泽光亮。(A coating agent, a metal piece and a surface coating treatment method thereof. The coating agent is used for surface pretreatment of the metal piece and comprises the following components in percentage by mass: 1-10g/L of chromium nitrate, 0.1-5g/L of potassium fluotitanate, 0.2-10g/L of phytic acid, 0.01-0.2g/L of ammonium bifluoride and 0.1-5g/L of cobalt nitrate. The film formed by the coating agent has good corrosion resistance and strong binding force with the coating, and can be used as a good substrate for subsequent treatments such as spraying and the like. After the workpiece is treated, the film on the surface of the workpiece is mainly trivalent chromium, is more environment-friendly than hexavalent chromium, and the surface of the workpiece is bright in color.)