电容器用钽壳的外表面抛光研究

Study on external Surface polishing of Tantalum Shell for Capacitor

针对钽壳外表面存在的拉伤、拉痕、划伤、麻坑等缺陷,本文设计了粗抛选用离心抛光和精抛选用磁研磨抛光的抛光试验,通过卡尺、螺旋测微仪测量,目视和金相显微镜检验。结果表明:钽外壳的光泽度较好,表面比较均匀,且无氧化层、钝化层、注酸孔损伤现象,满足客户使用要求。

The methods of removing the defects of tantalum shell outer surface, such as pull, scratch, etc., are studied in this paper.In this paper, three kinds of polishing experiments are designed, in which coarse polishing is selected by centrifugal polishing and finishing polishing by magnetic grinding.Measured by calipers, helical micrometers, visual and metallographic examination.It was shown that :Tantalum shell has good glossiness, uniform surface, and no oxide layer, passivation layer, acid injection hole damage phenomenon, to meet customer requirements.