热轧润滑对中厚板轧制力和表面特征的影响  

Effect of lubrication on the rolling force and surface character of medium plate in hot rolling

作　　者：高雅[1] 孙建林[1] 朱作鑫[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《北京科技大学学报》2011年第9期1111-1115,共5页Journal of University of Science and Technology Beijing

基　　金：北京科技大学与太钢集团临汾钢铁公司合作项目

摘　　要：通过中厚钢板热轧工艺润滑实验,分析了不同工艺润滑条件下中厚钢板热轧过程中轧制载荷与压下率的关系,研究了工艺润滑对钢板表面质量的影响,并结合实验钢的连续冷却转变曲线,探讨了工艺润滑条件对钢板组织转变的影响.结果表明:中高质量浓度比低质量浓度热轧油能更有效地降低轧制力;粗轧阶段比精轧阶段降低轧制力效果更明显.工艺润滑可改善中厚热轧板的表面质量,降低板面粗糙度,并促进钢板表面处在轧制过程中的铁素体转变,减少表面附近的带状组织,使轧后表面处组织均匀细小,减小表面缺陷产生的概率.Lubrication experiments of medium plates in hot rolling were carried out under different lubrication conditions to analyze the relationship between rolling force and compressibility and study the effect of lubrication on the slab surface quality. The influence of lubrication conditions on the structural transformation in the steel plates was also discussed in combination with the continuous cooling transformation curve of the experimental steel. It is shown that lubrication oil with high concentration can reduce more rolling force than that with low concentration, and this effect is more obvious in rough rolling than finish rolling. Lubrication in hot rolling improves the slab surface quality, decreases the slab surface roughness, promotes ferrite transformation, reduces zonal structure near the slab sur- face, and makes the deformation uniform and the probability of surface defects lower.

关 键 词：中厚板 热轧 润滑 轧制力 表面质量 组织转变 

分 类 号：TG335.5[金属学及工艺—金属压力加工]