六西格玛在提高螺纹钢负偏差合格率中的应用  

Application of Six Sigma in Improving Qualified Rate for Negative Deviation of Screw-thread Steel

作　　者：郑启蒙[1] 武艳香 张川[1] 吴明明[2] Zheng Qi-meng;Wu Yan-xiang;Zhang Chuan;Wu Ming-ming(Long Products Plant of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;Technology Quality Dept.of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古包钢钢联股份有限公司长材厂,内蒙古包头014010 [2]内蒙古包钢钢联股份有限公司技术质量部,内蒙古包头014010

出　　处：《包钢科技》2018年第5期55-59,共5页Science & Technology of Baotou Steel

摘　　要：文章以Φ25 mm螺纹钢为例,结合六西格玛使用DMAIC步骤解决问题的思路,以数据为依托,确定影响螺纹钢负差合格率的根因,制定根因的控制水平,将螺纹钢负差合格率从65. 6%提高到91. 36%,以更好的适应螺纹钢理论重量交货,提高产品利润,降低吨钢成本。In the paper, the basic reasons for the qualified rate for negative deviation of screw-thread steel are determined and the control level of basic reasons is established by taking φ25 mm screw-thread steel as an example, combining with the idea of six sigma using DMAIC steps to solve problems and supporting by data. As a result, the qualified rate for negative deviation of screw-thread steel is increased from 65.6% to 91.36% in order to better adapt to the delivery of screw-thread steel by theoretical weight, increase product profit and reduce costs of per ton of steel.

关 键 词：螺纹钢 六西格玛 负偏差 

分 类 号：TG335.64[金属学及工艺—金属压力加工]