产品制造和装配过程认证 DMAIC 方法

摘要：

本文以扶梯梯级链制造和装配过程为例，提出了一套基于DMAIC的系统化和结构化过程认证方法，以减少过程变异，确保过程受控和有足够能力。主要方法是先通过流程图、SIPOC、PFMEA等分析，识别关键产品特性（KPC）；然后针对各个KPC进行MSA、控制图、过程能力分析，了解当前过程的能力水平；针对过程能力不达标的KPC，进行根源分析和改进，确保过程能力达到1.33以上；最后更新质量文件，制定过程控制和过程能力定期跟踪计划。

Abstract:

Taking the manufacturing and assembly process of escalator step chain as an example, a systematic and structured process certification method based on DMAIC is proposed to reduce process variation and ensure process control and sufficient capability. The main method is to identify the key product characteristics (KPC) through flow chart, SIPOC, PFMEA and other analysis at first; Then MSA, control chart and process capability analysis are carried out for each KPC to understand the current process capability level. For KPC whose process capability does not reach the standard, root cause analysis and improvement actions are taken to ensure that the process capability is above 1.33; finally, it is proposed to update the quality document, develop the process control and process capability regular tracking plan.

作者简介：汪泉发，副院长，主要从事卓越绩效模式、质量管理、精益管理、质量改进、战略管理研究。