随着用户对热轧钢带板形质量要求的不断提高，热轧带平整工序在板形质量改善中的应用越来越多。但是，热轧平整工序也带来了大量的表面质量缺陷，以挫伤缺陷出现最为广泛，对板带表面质量影响最为严重。通过对挫伤缺陷形貌的分析，提出挫伤缺陷是由相互挤压的带钢的相对滑动导致局部金属产生剪切滑移而形成的，带卷产生层间滑动的原因是相邻层间的静摩擦力不足以抵消带卷的转动惯量，从而产生相对滑动。带卷板面的不平滑区域与相邻平滑区域存在明显的半径突变，滑动时在与相邻层的接触面区产生足够的压力，导致局部金属产生剪切滑移。同时提出了相应的预防措施。
In recent years,the shape quality of hot strip has been focused by more and more customer.The flattening of hot strip coil is used to improve the shape quality.However,the process of flattening brought a large number of surface quality defects.The scractch among surface defects affected on the surface quality of the strip most severely. Scratch is caused by the shear slip of local metal,resulting from the relative sliding of adjacent layers with high pres-sure.The reason of relative sliding is that the static friction between adjacent layers is not enough to counteract the rotary inertia of coil.The radius mutation between the rugged area and the adjacent smooth area causes sufficient pressure on local contact surface,which results in shear slip of local metal.Finally the corresponding preventive measures are pointed out.
参考文献
| [1] | 李月林,马晨.唐钢平整分卷生产线简介[C].2007年河北省轧钢技术与学术年会论文集,2007:511-515. |
| [2] | 苏清旭.热轧带钢表面挫伤缺陷产生原因分析[J].钢铁,1999(03):34-36. |
| [3] | 中国金属学会.热轧、冷轧、热镀金属板带的表面缺陷图谱[M].北京:中国金属学会<钢铁>编辑部,2000 |
| [4] | 王雷国;田维政;张学江.邯钢热轧平整钢带挫伤缺陷成因及预防[A].张家口:河北省冶金学会,2012:115. |
| [5] | 于顺兵;刘澄.冷轧薄带钢缺陷识别与分析手册[M].北京:化学工业出版社,2012 |
| [6] | 张建军;蔡恒君.冷轧钢板表面擦伤缺陷的研究[J].世界金属导报,2010-10-12(13) |
| [7] | 田勇,包磊.降低精整卷挫伤的研究[C].2009年全国热轧板带生产技术交流会论文集,2009:106-112. |
| [8] | 胡会荣,顾小军,董欣欣.热轧酸洗板缺陷分析与控制[J].河北冶金,2013(07):41-42,33. |
| [9] | 郝明远.本钢热连轧厂平整分卷机组常见表面质量缺陷产生原因及控制措施[C].2008年全国轧钢生产技术会议论文集,2008:895-898. |
| [10] | 王立旗,樊国齐,席江涛,吴峰权.热轧酸洗卷表面缺陷分析及控制[J].河北冶金,2011(09):72-74,35. |
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