某公司钢铁件电镀铬层的外观起皮缺陷率较高，导致一次交验合格率低。根据六西格玛的思路，以电镀原理作根据，借助Minitab软件逐步筛选出关键影响因素，发现影响最大的是电源设备，其次是活化时间。提出改直流电源为脉冲电源，以及将活化时间从原来的2~8s调整为6~8s。对改进措施实施后的生产情况进行监控，最终将起皮缺陷率维持在3.4%以下。
The first time yield of the chromium-plated steel parts was low in a company due to the peeling defect of coatings. The causes were analyzed using Minitab software based on the principle of electroplating and the theory of lean six sigma. The power supply and activation time were found to be the most important factors. It was suggested to change the direct current power supply to pulsed current power supply, and adjust the activation from 2-8 s to 6-8 s. Through the implementation and monitoring of the improvement measures, the rate of peeling defect maintained below 3.4%.
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