重型机械Issue(4)：16-19,4.
大型挤压机机架超压预紧技术研究
Study on super pressure pretightening of large-scale extrusion press frame
摘要
Abstract
The principle and operation method on pretightening frame of large-scale extrusion press were intro-duced.Through analysis of stress deformation of pull-rod and pressure colum,before and after pretightening frame of 125MN extrusion press,it gained that pretightening pull-rod is 36% of stress change range of un-pretightening pull-rod,which is 29.5% of extension unpretightening pull-rod.Pretightening is able to prolong fatigue life of pull-rod,improve rigidity of extrusion press,and ensure product accuracy.关键词
挤压机/超压预紧/拉杆/压套Key words
extrusion press/superpressure pretightening/pull-rod/pressure column分类
矿业与冶金引用本文复制引用
陈永甲,张君,侯永超,张万福,周少凡,冯东晓..大型挤压机机架超压预紧技术研究[J].重型机械,2014,(4):16-19,4.基金项目
国家重大科技专项（2009ZX04005-039，2011ZX04016-081）陕西省重点科技创新项目 （）
