立辊润滑工艺对铁素体区轧制Ti-IF钢组织性能及边部质量的影响  

Effect of vertical roll lubrication process on microstructure, properties and edge quality of Ti-IF steel strip produced by ferritic rolling technology

作　　者：夏银锋 刘宏博 王建功[1] 康永林[2] 赵文姣[1] 黄爽[1] XIA Yinfeng;LIU Hongbo;WANG Jiangong;KANG Yonglin;ZHAO Wenjiao;HUANG Shuang(Hot Rolling Department,Shougang Jingtang United Iron and Steel Co.,Ltd.,Tangshan 063200,China;School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]首钢京唐钢铁联合有限责任公司,河北唐山063200 [2]北京科技大学材料科学与工程学院,北京100083

出　　处：《轧钢》2021年第2期23-28,共6页Steel Rolling

摘　　要：针对某热轧厂铁素体区轧制Ti-IF钢带钢边裂缺陷的问题,提出了采用立辊润滑的方法予以改善。分析认为,采用立辊润滑轧制工艺可减小立辊减宽过程中的摩擦力,减少低温下带钢边部表面的剪切力;同时,有利于立辊表面质量的改善,从而改善带钢边部质量。为此,研究了立辊润滑工艺对铁素体区轧制Ti-IF钢带钢微观组织、力学性能、析出物以及边部质量的影响。结果表明,采用立辊润滑轧制工艺,Ti-IF钢带钢的组织和析出物没有明显差异,但塑性显著提高;带钢边部表面的最大裂纹深度由361μm减小到128μm,边部缺陷数量明显减少;带钢截面形貌较为光滑,没有发现明显裂纹,边部质量得到明显改善。In view of edge crack defect of Ti-IF steel strip produced by ferritic rolling technology in a factory, vertical roll lubrication process was put forward to solve the defect problem.Through analysis, it believes that the friction force in the process of vertical roll widening and the shear force on the surface of the strip edge at low temperature can be reduced by vertical roll lubrication process.At the same time, it is conducive to the improvement of the surface quality of the vertical roll, thereby improving the quality of the strip edge.Therefore, the effect of vertical roll lubrication process on the microstructure, mechanical properties, precipitates and edge quality of Ti-IF steel strip by the ferritic rolling process was researched.The results show that the plasticity of Ti-IF steel strip is significantly improved, and there is no significant difference in the microstructure and precipitates of the strips after used the vertical roll lubrication rolling process.The maximum crack depth on the surface of the strip edge defects was reduced from 361 μm to 128 μm, and the number of edge defects was significantly reduced.The cross-section of the strip is smoother, no obvious cracks were found, and the quality of the edges was obviously improved.

关 键 词：立辊润滑工艺 TI-IF钢 边裂缺陷 铁素体区轧制 组织性能 析出物 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG335[金属学及工艺—金属材料]