应用Six-Sigma改进冷凝器焊接过程质量

Application of Six-Sigma to Improve the Process Quality of Condenser Welding

摘要:

针对ZY企业出现冷凝器焊接线缺陷率居高不下的问题，运用六西格玛管理改进型DMAICY模型(项目界定(D)、项目测量(M)、项目分析(A)、项目改进(I)、项目控制(C)、项目收益（Y）)进行质量业绩改进，使用Minitab软件对质量数据统计分析，并制定一套行之有效的改进方案；通过案例实施，焊接直通率由原来的91.4%上升到99.77%，六西格玛水平由1.33提升到2.84，工序能力明显增强，实证表明DMAICY模型在焊线质量改进中的成功应用实现了预期目标，产生了显著的经济收益。

Abstract:

The welding quality is the major focus of ZY Enterprise，has success fully implemented a 6σ project in order to improve the quality performance based on Six-sigma management DMAIMY model. For condenser welding defect rate high problem in ZY Enterprise，and the production of data is analyzed by using Minitab software. Finally, a set of effective improving program have been put forward. By implementing evaluation, condenser welding line first pass yield went up from 91.4% to 99.77%.what`s more, Sigma indicates increased from 1.33 to 2.84, and the process capability was obviously enhanced. The empirical research show that DMAICY model which was successful applied in improving the welding quality program achieved the expect goal and produced significantly economic benefits.