摘要 借助Deform 3D软件对5356铝合金进行9道次热连轧数值模拟,研究了不同轧制速度条件下的轧件温度、等效应力和轧制力的分布情况.结果表明:降低轧制速度,塑性变形热对轧件温度的补偿能力减弱,轧件温度随轧制速度的降低呈现下降趋势,且下降幅度增加;提高终轧速度,轧件接触变形区等效应力随轧件温度的增加而逐渐降低;当终轧速度由1.4 m·s-1增至2.6 m·s-1时,轧制力呈下降趋势;当终轧速度由2.6 m·s-1增至2.9 m·s-1时,因塑性变形热对轧件温度的补偿能力较强,偶道次轧制力降低,温度增加为影响偶道次轧制力的主导因素,奇道次轧制力增大,应变率增加为影响奇道次轧制力的主导因素,最优终轧速度为2.6 m·s-1. The numerical simulation of 9 roll-pass hot rolling of 5356 aluminum alloy by Deform 3D was carried out to study the distribution of temperature,stress and rolling force of rolling piece under different rolling speed conditions.The results show that when the rolling speed is reduced,the compensation ability of the plastic deformation for the temperature of the rolled piece is weakened,the temperature of the rolling piece decreases with the decrease of the rolling speed,and the decreasing range increases.Increasing the final rolling speed,the equivalent stress of the rolling contact deformation zone gradually decreases with the increase of the rolling piece temperature.When the final rolling speed increased from 1.4 m·s-1 to 2.6 m·s-1,the rolling force is declining.When the final rolling speed increased from 2.6 m·s-1 to 2.9 m·s-1,Because the plastic deformation heat has a strong ability to compensate the temperature of the rolled piece,the rolling force of even passes decreases,and the increase of temperature is the main factor affecting the rolling force of even passes,while the increase of odd passes increases and strain rate is the main factor affecting the rolling force of odd passes,the optimal final rolling speed is 2.6 m·s-1.
机构地区 沈阳大学机械工程学院
出处 《沈阳大学学报:自然科学版》 CAS 2021年第2期95-100,共6页 Journal of Shenyang University:Natural Science
基金 国家自然科学基金青年基金资助项目(51301111) 辽宁省自然科学基金资助项目(2019-KF-05-04) 轧制技术及连轧自动化国家重点实验室开放课题基金(2017RALKFKT007).
关键词 5356铝合金 热连轧 终轧速度 数值模拟 轧件温度场 5356 aluminum alloy hot rolling finishing speed numerical simulation temperature field of rolled piece
