浮动芯棒速度对钢管连轧力学参数影响的有限元分析  

Finite Element Analysis of Influence of Floating Mandrel Velocity on Mechanical Parameters During Tube Continuous Rolling

作　　者：齐秀美[1] 赵志毅[1] 苏惠超[2] 任学平[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]宝山钢铁股份有限公司宝钢分公司钢管厂,上海201900

出　　处：《材料工程》2010年第8期81-85,91,共6页Journal of Materials Engineering

摘　　要：采用ABAQUS显式动力仿真平台,结合生产实际,对宝钢140mm全浮动芯棒钢管连轧过程进行仿真分析,研究连轧过程中芯棒与轧件的运动状态,并采用单机架限动芯棒模型研究芯棒速度对轧制力和轧制力矩的影响。结果表明：芯棒-轧辊速比对轧制力和轧制力矩有很大的影响。当芯棒-轧辊速比小于1时,轧制力随速比的增加而显著增加;当速比约为1时,轧制力具有峰值;当速比大于1时,轧制力随速比的增加而减小。轧制力矩随芯棒-轧辊速比的增加单调减小。当速比大于1.25后,轧制力和轧制力矩的变化都不再明显。毛管头部咬入第5,6机架时,芯棒-轧辊速比的增加导致轧制力的增加,使荒管形成＂前竹节＂;毛管抛出第1~4机架时,芯棒-轧辊速比的增加亦使5,6机架的轧制力增加,使荒管形成＂后竹节＂。Based on the production practice,ABAQUS explicit dynamic simulation platform was used to simulate the tube continuous rolling process by Baosteel 140mm full floating mandrel mill and investigate the motion state of the mandrel and tube.The single stand mill model was built to research the influence of mandrel velocity on rolling force and rolling torque.The analysis results show that the mandrel-roller velocity ratio（MRVR） has great influence on rolling force and rolling torque.When the MRVR is lower than 1,the rolling force increases obviously with the increase of MRVR and reaches the peak value when MRVR is about 1.When the MRVR is higher than 1,the rolling force decreases with the increase of MRVR.The rolling torque decreases monotonically with the increase of MRVR.When MRVR exceeds 1.25,the changes of rolling force and rolling torque are no more obvious.For the 8-stands rolling,the increase of MRVR makes the rolling force increase when the tube is entering the 5th and 6th stands,which causes the formation of the ＂front bulge＂ on tube,and when the tube is exiting the 1st-4th stands,which causes the formation of the ＂back bulge＂ on tube.

关 键 词：钢管 连轧 芯棒速度 轧制力 

分 类 号：TG335.71[金属学及工艺—金属压力加工]