新闻中心
锌合金压铸件电镀后出现褪色甚至发黑是什么原因
发布日期:2022-03-04 10:13:50

电镀过程和压铸表面质量可能导致电镀不良。

模具铸件应具有良好的表面质量, 无孔隙度、裂纹、毛孔、气泡、收缩孔、冷线、针孔等缺陷;否则, 电镀后铸件的表面很容易起泡, 电镀层也会与基板分离。 

电镀前研磨和抛光时, 要注意不要过度研磨。 

由于在压铸的凝固过程中, 由于冷却速度快, 压铸表面成了一层致密的硬层, 内部结构可能存在孔隙率和收缩率等缺陷。

研磨时不要去除细表面, 否则电镀过程中会出现点蚀和气泡。此外, 抛光轮不应压得太紧, 过热, 以防止磨料与产品之间的粘附, 导致产品电镀不良。

锌易于氧化, 在表面形成一层氧化膜, 影响了锌的性能。

因此, 去除氧化膜要有还原材料, 可利用酸 (如盐酸) 溶液将氧化膜的表面脱落。

欢迎广大朋友来图来样咨询合作,联系电话:13925488556(微信同号),莫先生。

浏览量:1381
{"serList":[{"icon":"iconfront front-shouye","status":"1","isSys":"1","title":"首页","url":"index.html","type":"index"},{"icon":"iconfront front-pinglun","status":"1","isSys":"1","title":"留言","url":"msg.html","type":"msg"},{"icon":"iconfront front-didianmianxing","status":"0","isSys":"1","title":"地图","url":"map.html","type":"map"},{"icon":"iconfront front-weibiaoti-","status":"1","isSys":"1","title":"电话","phone":"15343903788","type":"tel","color":""},{"icon":"iconfront front-duanxin","status":"0","isSys":"1","title":"短信","phone":"13800138000","type":"sms"},{"title":"联系晶鑫","icon":"layui-icon layui-icon-headset","color":"","type":"link","isSys":"0","status":"1","linkData":"{\"linkType\":\"1\",\"linkName\":\"联系晶鑫\",\"linkKey\":\"page\",\"linkUrl\":\"page.html?id=600734039015472\",\"jsonData\":{}}","url":"page.html?id=600734039015472"}],"hasEdit":true}