摘要
针对某棒材连轧线免加热直接轧制工艺中粗轧阶段面临的温度场均匀性控制、工艺参数协同优化等问题,基于Abaqus软件构建了热力耦合三维有限元模型,实现轧制力-温度场-变形场多物理场强耦合动态仿真。通过网格自适应加密技术,定量表征了轧制力矩波动,心表温差梯度及速度场分布特征。通过构建生产线工艺模型提供的理论支撑体系,为下一步工艺优化创造基础,从而有效抑制直轧产线改造引发的轧材端部温度梯度,降低同批次制品首尾特性差异。
A three-dimensional thermomechanical coupled finite element model was developed using Abaqus to address temperature non-uniformity and optimize process parameters synergistically in the roughing stage of a no-reheating direct rolling line for bars.The model enables a dynamic,strong-coupled simulation of the rolling force,temperature,and deformation fields.By employing adaptive mesh refinement,it quantitatively characterizes the fluctuations in rolling torque,the core-to-surface temperature gradient,and the velocity field distribution.This model provides a theoretical foundation for process optimization,effectively suppressing the end-temperature gradient induced by the direct rolling process and minimizing head-to-tail property variation within the same batch of products.
作者
李璐
张镭
贾尚武
刘京
任劲宇
田瑞明
张立君
王斌
刘传雪
孙彦青
LI Lu;ZHANG Lei;JIA Shangwu;LIU Jing;REN Jinyu;TIAN Ruiming;ZHANG Lijun;WANG Bin;LIU Chuanxue;SUN Yanqing(China National Heavy Machinery Research Institute Co.,Ltd.,Xi’an 710018,China;Xi’an Xiangyang Aerospace Materials Co.,Ltd.,Xi’an 710018,China)
出处
《重型机械》
2025年第6期43-48,共6页
Heavy Machinery
关键词
棒线材
免加热直接轧制
粗轧
三维热力耦合模型
bar and rod
direct rolling of forging
rough rolling
three-dimensional thermodynamic coupling model
