钛合金镀铜、镀银工艺

摘要

In order to eliminate the poor adhesion of copper and silver coatings prepared from cyanide bath on titanium alloy surface, five process schemes for copper and silver plating were designed through changing pretreatment methods of substrate. The optimal process flow is as follows:wet sand blowing, protection, degreasing by scrubbing with light lime, washing with cold water, acid copper plating or cyanide silver plating, washing with cold water again, and drying with compressed air. The production practice showed that all of the products prepared by the given process have qualified adhesion and their hydrogen contents are under the control level. The method for controlling hydrogen content in titanium alloy and some points for attention were described.%为克服钛合金氰化镀铜、镀银层结合力不良的问题，通过改变基体预处理方式设计了5个镀铜、镀银方案并进行结合力表征，得到钛合金镀铜、镀银的最佳工艺流程为：湿吹砂─保护─轻石灰刷洗除油─冷水洗─酸性镀铜或氰化镀银─冷水洗─压缩空气吹干。生产实践证明采用该工艺电镀所得产品结合力均合格，且含氢量不超标。介绍了电镀过程中控制钛合金含氢量的方法和注意事项。