常闭阀罩生产过程质量控制研究

摘要

Observing the quality problems in a closed valve cover enterprise , quality control theory and methods are used to improve the quality of closed valve cover .First, a praetor diagram method is used to analyze the product quality problems;and then , using measurement system analysis , process capability a-nalysis is made to find the key factors;using a fishbone diagram , a linear regression analysis is made to de-sign the improvement scheme;using Minitab software , data is analyzed .Finally , improved improved im-provedtithe project is successfully implemented , whose result shows that failure rate is reduced largely , and the process capability improved from 0.54 to 1.22.%为了解决某公司常闭阀罩生产过程中质量不稳定、生产过程能力低等问题，将质量管理方法应用于常闭阀罩生产的管理过程。利用测量系统分析、过程能力分析、一元线性回归分析等方法进行产品质量的分析，并结合Minit-ab软件里面的功能模块，精确计算过程能力指数，生成控制图，根据判定准则，给出判定结论。企业应用实例表明，该公司在实施了质量控制后，过程能力提高，废品率降低，有效地提高了产品质量。