全万能成品孔型轧制高精度重轨生产工艺研究  

Study on rolling high precision heavy rail with the full-universal finish pass

作　　者：周剑华[1] 吴迪[1] 赵宪明[1] 林刚 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110004 [2]攀枝花新钢钒股份有限公司轨梁厂,四川攀枝花617000

出　　处：《钢铁研究》2007年第3期31-34,共4页Research on Iron and Steel

摘　　要：介绍了成品孔型的选择、采用全万能成品孔型轧制60 kg/m重轨生产线的工艺布置方案及主要生产工艺。并对半万能成品孔型和全万能成品孔型轧制60 kg/m重轨的生产工艺就压下系数分配进行了分析和对比,得出使用全万能成品孔型,轧件在万能孔型中轨头与轨底及轨腰的压下系数相差很小,轧件变形均匀,各万能机架间的压下系数分配更合理,有利于提高重轨的表面质量和尺寸精度,提高轧制效率。This paper introduces the choice of finish pass, the process layout and technologies of the full-universal mill line for rolling 60 kg/m heavy rail. Production technologies of 60 kg/m heavy rail rolled with half-universal finish pass and full-universal finish pass are analyzed and compared. Following conclusions are obtained： the difference of depressing coefficient of different parts of rail in universal finish pass is littler; the deformation of the rail is uniform and the distribution of depressing coefficient between universal mills is more reasonable. Therefore, the full-universal finish pass is propitious to improve the surface quality and the dimensional accuracy of the heavy rail, as well as to increase the efficiency of the universal mill line.

关 键 词：高精度重轨 高精度轧制 万能轧机 成品孔型 

分 类 号：TG335.43[金属学及工艺—金属压力加工]