热矫直机上辊面缺陷成因及改进  

Formation Causes of Defects on Hot Plate Leveler's Upper Roll Surface and Improvement

作　　者：俞慧[1] 袁福根[1] 王英杰[2] 

机构地区：[1]宝钢分公司,上海200941 [2]宝钢研究院,上海201900

出　　处：《宝钢技术》2007年第4期64-67,共4页Baosteel Technology

摘　　要：热轧厚板经热矫直工序后钢板上表面产生压痕缺陷,从压痕的形貌特征分析,缺陷是由热矫直机上工作辊辊面缺陷所致,经查上辊面确实存在缺陷。针对热矫直机上工作辊表面缺陷的产生,在对与工作辊相关的支承辊、矫直机上框架的工况进行检测基础上,分析并得出了上辊面缺陷的成因是上框架的不平和支承辊辊形不良,研究了消除缺陷的对策与措施,并通过对上框架水平度的调整,以及支承辊辊形的优化,解决了上辊面缺陷问题。Some indentation defects would occur on the upper surface of hot rolled heavy plates after the hot leveling procedure. According to the analysis of the indentation＇ s morphology characteristics, the indentation was caused by the surface defects of the work roll, a part of the hot plate leveler. Now how the defects appear on the upper roll surface of the hot plate leveler has been known. The defect formation cause has been analyzed on the basis of examinations on operations by the back up roll and leveler＇ s upper frame related to the working roll. It turns out to be the out-of-level of the upper frame and improper shape of the back up rolls. Countermeasures to eliminate the defects have been studied and taken. Defects on the upper roll surface were eliminated through adjusting the upper frame＇ s levelness and optimizing the back up roll＇ s shape.

关 键 词：热矫直机 辊面缺陷 厚板 

分 类 号：TG333.23[金属学及工艺—金属压力加工]