硬铬镀层厚度均匀性研究

Research on Thickness Uniformity of Hard Chromium Coating

铬镀层的硬度高,耐磨性好,而且可以在高温下工作,可以广泛地用于需要耐磨的零件和工具、量具、模具,以及修复零件的尺寸。针对硬铬镀层厚度不均匀的问题,通过对电镀铬层电导率、电流密度、槽液温度、槽液循环、电流效率等因素的研究,分析各要素对零件电镀铬层均匀性的影响,指出合理的电流密度为-3000~-6000 A/m^(2),电镀温度控制不宜超过60℃,这些参数可有效提高整体生产效率,为表面处理生产加工企业提供参考。

Because the chromium coating had high hardness,good wear resistance,and ability to work at high temperature,it could be widely used in parts and tools,measuring tools,molds and repairing parts dimensions that required wear resistance.Aimed at the problem of hard chromium plating thickness bejing not uniform,by means of researching factors of chromium coating conductivity,current density,bath temperature,bath circulation,current efficiency and so on,we analyzed the elements influence on parts plating chromic coating uniformity,and pointed out that reasonable current density was-3000~-6000 A/m^(2),the coating temperature control was inappropriate to exceed 60℃.The parameters could improve integral production efficiency and provide references for the surface treatment production enterprises.