在QC小组活动的对策实施阶段,为了从每个要因的多个水平中找出最佳水平,利用正交试验法安排了4因子4水平的试验,并对试验结果进行了极差分析和方差分析,从中找出了每个要因的最佳水平.最佳水平在设备上应用以后,小组的活动目标顺利实现,并且其他指标也有了明显的改善.利用正交试验法不仅省时省力地解决了问题,而且也提升了QC成果的水平. In the implementation phase of the strategy of QC group activities, in order to find out the best level from the multiple levels of each factor, orthogonal test was used to arrange 4 factors and 4 levels of test, and the test results were conducted with range analysis and variance Analysis, from which to find out the best level for each factor. The best level After the application of equipment, the group’s goal of achieving the goal, and other indicators have also been significantly improved. The use of orthogonal test method not only saves time and effort to solve The problem, but also enhance the level of QC results.