立辊形状对边角部金属流动的影响规律  

Influence of Edger Roll Shape on Corner Metal Flow

作　　者：王晓南[1] 邸洪双[1] 梁冰洁[1] 夏晓明[1,2] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110004 [2]宝山钢铁股份公司梅山钢铁公司,江苏南京210039

出　　处：《钢铁研究学报》2009年第7期20-23,共4页Journal of Iron and Steel Research

基　　金：国家重点基础研究发展规划资助项目(2006CB605208)

摘　　要：以梅钢热轧机组的粗轧板坯边部出现"黑线"为背景,对不同立辊形状的五道次可逆立-平轧制过程进行了数值模拟。结果表明,孔型立辊轧制可更好地抑制双鼓形的产生;在相同的轧制工艺条件下,孔型立辊轧制的翻平量大于平立辊轧制的翻平量;轧制过程中,低温、高应力应变状态的金属在轧件边部的累积最终可能导致轧件边部沿长度方向产生"黑线"缺陷;立轧具有一定的修复微小缺陷的作用,从而改善和提高了带钢的边部质量。The seam defect appears at the plate edge of rough-rolled medium billet of the Meishan Steel＇s hot rolling units. The edger roll shape was numerically simulated in the five-pass reversible V-H rolling process. Outcomes show that grooved vertical roll rolling can inhibit two-drum deformation; under the same rolling process conditions, the value of side tumbling for groove vertical rolling is more than the value of side tumbling for flat vertical rolling; during rolling process, the metal at low temperature, high strain and high stress cumulated on the edge of the workpiece may cause the seam defect along the length of the workpiece; the edger roll has ability of repairing minimal defects, and vertical rolling can improve the quality of the strip steel edge.

关 键 词：边角部金属 重启动方法 数值模拟 

分 类 号：TG335.1[金属学及工艺—金属压力加工]