短应力线轧机机架结构的改进及优化

Improvement and optimization of the frame structure of the short stress line rolling mill

天津钢铁集团有限公司棒材厂的轧机全部采用短应力线轧机,在棒材轧制过程中,由于受钢坯的冲击、减速机输出轴等因素的影响,造成轧机机架与拉杆接触部位铜套的紧固螺丝经常发生切断。螺丝的切断往往导致机架铜套脱落,从而引发轧机在轧制过程中失去工作精度,造成轧制事故。本文通过对轧制过程中可能导致该现象的原因进行分析,并结合现场对机架与拉杆相结合部位铜套的结构进行了改造,对该问题提出解决方法。

The rolling mill of Tianjin Iron and Steel Group Co.,Ltd.’s bar mill uses a short stress line mill.During the bar rolling process,due to the impact of the billet and the output shaft of the reducer,causes the mill stand and the pull rod contact position copper sleeve fastening screw to occur often the root to cut.Undercutting of screws often causes the copper bushing of the stand to fall off,which causes the rolling mill to lose its working accuracy during the rolling process,causes rolling accidents.This article analyzes the reasons that may cause this phenomenon during the rolling process,and combined with the field,the structure of the copper sleeve in the joint part of the frame and the pull rod is modified,on the spot to propose a solution to this problem.