钢铁零件镀铜,对镀铜层质量不合格的工件,重镀前需要退除不合格的镀铜层。局部渗碳的钢铁零件,常用镀铜的方法来保护零件上不需要渗碳的部位,渗碳结束以后,有时也需要退除起保护作用的镀铜层。最初,我们使用过氰化钠、烧碱溶液电解退铜。氰化钠是一种对人体健康有严重危害的剧毒物质,使用中生成的废液、废气排入江河及大气中,也影响工农业生产和城市 Iron and steel parts, copper, unqualified quality of the workpiece, heavy plating before the need to remove unacceptable copper plating. Local carburizing steel parts, commonly used copper plating method to protect the parts do not need to carburizing the site, carburizing after the end, and sometimes also need to remove the protective effect of the copper layer. Initially, we used sodium cyanide, sodium hydroxide solution electrolytic copper. Sodium cyanide is a highly toxic substance that poses a serious hazard to human health. Wastewater and waste gas generated during use are discharged into rivers and the atmosphere, and also affect industrial and agricultural production and the city