论文部分内容阅读
一.前言在冶金、机械、化工、轻工等部门普遍存在大型零部件的表面涂层问题,这类问题可以用热喷涂,槽镀等方法解决,并且已有成功的经验,但上述方法应用于超大面积涂层时,因受各种客观条件的限制,难以普遍推广应用. 刷镀是国内70年代末开发的一项新工艺,它具有工艺简单、机动性强、沉积速度快、选择施镀、镀层质量高等特点,因而在许多工业部门获得了广泛的应用,但目前刷镀技术一次施镀面积一般不大于10dm~2,如何应用刷镀技术在一个大于500dm~2面积的大型零件表面上刷镀是我们研究的内容. 二、超大面积刷镀工艺特点这里所说的“超大”系指一次施镀面积大于500dm~2的表面,这样大的表面一次镀覆在工艺上有很多特点,并存在一定难度. 1.刷镀中,小型工件时,被镀表面(阴极)与阳极面积之比一般以2:1～3:1为宜.超大面
I. Introduction Prevalent surface coating of large parts and components in metallurgy, machinery, chemical industry, light industry and other departments, such problems can be solved by thermal spraying, bath plating and other methods, and has been successful experience, but the above method Due to various objective conditions, brush plating is a new process developed in China in the late 1970s, which has the advantages of simple process, high mobility, fast deposition rate, selective application Plating, high quality coating, which in many industrial sectors has been widely used, but the current brush plating plating area is generally not more than 10dm ~ 2, how to use brush plating technology in a large area of more than 500dm ~ 2 area Brush plating is the content of our study. Second, the characteristics of large area brush plating process Here, said “large ” refers to a plating area greater than 500dm ~ 2 surface, such a large surface coating process Many features, and there is a certain degree of difficulty. 1 brush plating medium and small parts, the surface is plated (cathode) and anode area ratio generally 2: 1 ~ 3: 1 is appropriate.