mini轧机轧制AISI1015钢轧件温升和应变的有限元模拟

Finite Element Simulation of Temperature Rise and Strain of AISI1015 Steel Workpiece During Mini Mill Rolling

利用Deform软件建立mini轧机轧制模型,研究了轧制过程中不同规格(Φ8 mm,Φ10mm,Φ13 mm)和不同初始温度(800,850,900,95℃)AISI1015钢轧件的温升和应变,分析了轧制温升差异的原因。结果表明:mini轧机轧制模型模拟得到出轧机时轧件的表面温度与实测结果的相对误差在13%以内;轧制过程中轧件心部的温升和累积等效应变均最大,并且轧制规格越小,心部温升和应变越大;轧件初始温度越低,温升及扭矩越大;不同规格轧件温升不均匀主要是由等效应变分布不均导致的,而不同初始温度下心部温升的明显差异是由轧制载荷不同造成的。

A mini mill rolling model was established with Deform software and then was used to simulate temperature rise and strains of the AISI1015 steel workpiece with different specifications(Φ8 mm,Φ10 mm,Φ13 mm)and different initial temperatures(800,850,900,950℃)during the rolling process.The reason for the difference in rolling temperature rise was analyzed.The results show that the relative errors were within 13%between the mini mill rolling model simulation and the test results of the surface temperature of the workpiece when exiting the rolling mill.During the rolling process,the temperature rise and accumulated equivalent strains in the core of the workpiece were the largest,and the smaller the rolling specification,the greater the temperature rise and strain in the core.The lower the initial temperature of the workpiece,the greater the temperature rise and the torque.The uneven temperature rise of the workpiece with different specifications was mainly caused by the uneven distribution of equivalent strains;the obvious difference of the temperature rise in the core at different initial temperatures was caused by different rolling loads.