FQM-Φ100 mm连轧管机组Φ73 mm孔型系列开发

Development ofΦ73 mm Pass Series for Fine Quality Mill(FQM)-Φ100 mm Mandrel Pipe Mill

文章主要介绍六机架FQM(Fine Quality Mill)-Φ100 mm连轧管机组关于Φ73 mm孔型系列的设计思路与开发情况。在设计该系列的连轧机组孔型时采用“孔型顶部延伸系数分配方法”,采用该方法设计的Φ73 mm连轧管机组孔型系列,实现了限动芯棒连轧管机组最小孔型系列开发技术的落地应用。工业化结果表明,采用该技术设计的连轧机孔型生产的无缝钢管壁厚精度达到±8%范围以内,钢管内外表面质量良好。

In the paper,the design thought and development ofΦ73 mm pass series for FQM(Fine Quality Mill)-Φ100 mm mandrel pipe mill with six stands are mainly introduced.When design this series of pass of mandrel pipe mill,the“distribution method of coefficient of elongation on top of pass”is adopted so that the applications of development technology of minimum pass series of mandrel pipe mill with retained mandrel are realized.The industrial results showed that the wall thickness accuracy of seamless steel pipe produced by the pass of mandrel pipe mill designed with this technology is within±8%as well as the internal and external surface qualities of steel pipe are good.