球墨铸铁管的质量改进

Quality Improvement of Ductile Cast-Iron Pipe

对球墨铸铁管的不合格品进行统计分析 ,根据因果图分析认为产生承口及中部水压试验不合格的因素主要是人、设备、原材料、工艺等几方面 ,并就相关因素采取了具体的改进措施 ,使球铁管的打压合格率由 86.2 2 %提高到 95 %以上。

The statistical analysis on the unaccepted products of ductile cast iron pipes has been carried out The personnel, equipment, raw materials and the process are recognized as the main factors causing the unaccepting of on the mouthing and water pressure test according to the causal chart The concrete measures on the relative factors are taken and the qualification rate of water pressure test is improved from 86 22% to above 95%