Scratch Defect Mechanism and Control Measures in Cold Tandem Mill
BAI Zhen-hua1， CHEN Hao1， GAO Ming-lei1， LI He1， WU Shou-min2， YAO Shou-jun2
1. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, State Key Laboratory of Metastable Materials Science and Technology, YanShan University, Qinhuangdao 066004, Hebei, China 2. Thin Strip Co., Ltd. of Baosteel, Shanghai 200431, China
Abstract：For the scratch defect of cold tandem mill, through a large number of field experiments and theoretical studies on the macro and micro characteristics of scratch defect, fully considering equipment and process features of cold tandem mill, the mechanism of the scratch defect for the first time was clarified. And it was put forward that the necessary conditions of scratch defect were the slippage between roller and workpiece, and the concentration of iron filings on roller surface. The scratch mark judgments were revised and relative preventing measures were puts forward. What’s more, the direct application of the model to the production of 1 220 five-stand tandem cold mill can obtain good results and economic benefit. The rate of scratch defect falls from 0.061% to just 0.018% and the rolling speed is raised from 1 232 m/min to 1 261 m/min.
收稿日期: 2013-09-18
出版日期: 2014-06-11
引用本文:
白振华， 陈 浩， 高明磊， 李 和， 吴首民， 姚寿军. 冷连轧机组划痕缺陷产生机制及治理措施[J]. 钢铁, 2014, 49(6): 59-64.
BAI Zhen-hua， CHEN Hao， GAO Ming-lei， LI He， WU Shou-min， YAO Shou-jun. Scratch Defect Mechanism and Control Measures in Cold Tandem Mill. Iron and Steel, 2014, 49(6): 59-64.
2014, Vol. 49 
