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.)

Claims

[ claim 1] the coating agent is used for surface pretreatment of metal parts, and is characterized by comprising the following components in percentage by mass: l to 10g/L of chromium nitrate, 0.1 to 5g/L of potassium fluotitanate, 0.2 to 10g/L of phytic acid, 0.01 to 0.2g/L of ammonium bifluoride and 0.1 to 5g/L of cobalt nitrate.

[ claim 2] A coating agent according to claim 1, wherein the chromium nitrate is contained in an amount of 3 by mass

-8g/L。

[ claim 3] A coating agent according to claim 1, wherein the potassium fluorotitanate is contained in an amount of L to 3g/L by mass.

[ claim 4] the coating agent according to claim 1, wherein the phytic acid is contained in an amount of 2 to 6g/L by mass.

[ claim 5] A coating agent according to claim 1, wherein the mass content of ammonium bifluoride is 0.5 to 0.1 g/L.

[ claim 6] A coating agent according to claim 1, wherein the cobalt nitrate is contained in an amount of 1 by mass

-3g/L。

[ claim 7] the coating agent according to claim 1, which is characterized in that P is adjusted by ammonia water

H value is 4.8-5.5.

[ claim 8] A method for skinning the surface of a metal member, comprising the steps of: is formulated according to claim

1-7 of the coating agent of any one of; spraying or immersing the metal piece into a coating agent solution, adjusting the pH value of the coating agent solution to 4.8-5.5, treating for a preset time interval, washing the metal piece with water, and drying.

[ claim 9] A metal material, characterized in that a surface of the metal material is coated by the method according to claim 8.

[ claim 10] the metal material according to claim 9, wherein after the coating film is formed, the surface of the metal material is further subjected to a passivation, oxidation resistance or coating treatment or the coating film is used as an anticorrosive layer, and the thickness of the coating film is 0.1 to 2 μ η ι.