摘要
针对型钢铰链在热轧过程中常见的扭转缺陷,建立了轧件轧制过程的有限元模型,并采用正交试验分析了轧辊直径、电机转速和孔型偏转角对轧件扭转变形的影响。结果表明:随着轧辊直径的增加,扭转角逐渐增大;随着电机转速的增大,扭转角先增大后减小;随着孔型偏转角的增大,扭转角先增大后逐渐减小,在孔型偏转角为7.6°时达到最大。孔型偏转角对扭转变形的影响较大。通过回归模型求得,在轧辊直径为369 mm、电机转速为675 r/min、孔型偏转角为13.13°的工艺参数条件下轧件的扭转角最小,并采用轧制试验验证了模型的准确性。
In view of the common torsion defect of section steel hinges in the process of hot rolling,the finite element model of rolled piece during rolling was established,and the effects of roll diameter,motor ratating speed and pass deflection angle on torsion deformation of rolled piece were analyzed by orthogonal test.The results showed that(a)torsion angle increased with the increase in roll diameter;(b)with the increase in motor ratating speed,the torsion angle increased at first and then decreased;(c)with the increase in the pass deflection angle,the torsion angle increased at first and then decreased gradually,reaching the maximum when the pass deflection angle was 7.6°.The influence of pass deflection angle on torsion deformation was more significant.From the regression model it was derived that the rotating torsion angle of the rolled piece was minimum under the process parameter condition that roll diameter was 369 mm,motor rotating speed was 675 r/min,and pass deflection angle was 13.13°,and the accuracy of the model was verified by rolling tests.
作者
程书鹏
周顺
李均禹
CHENG Shupeng;ZHOU Shun;LI Junyu(School of Materials and Metallurgy,Wuhan University of Science and Technology,Wuhan Hubei 430081,China)
出处
《上海金属》
CAS
2023年第4期84-88,94,共6页
Shanghai Metals
基金
省部共建耐火材料与冶金国家重点实验室基金(2014QNO3)。
关键词
型钢铰链
热轧
有限元
正交试验
扭转变形
section steel hinge
hot rolling
finite element
orthogonal test
torsion deformation
