大断面收缩率TC4轴类零件精密楔横轧数值模拟  

Numerical simulation on precise cross wedge rolling of TC4 shaft parts with large area reduction

作　　者：谭昊 师明杰 刘家旭 邓泉水 陈明[1,3] 张士宏[3] 程明[3] TAN Hao;SHI Mingjie;LIU Jiaxu;DENG Quanshui;CHEN Ming;ZHANG Shihong;CHENG Ming(School of Mechanical Engineering and Automation,University of Science and Technology,Anshan 114051,China;School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China;Institute of Metal Research,Chinese Academy of Sciences,Shi-Changxu Innovation Center for Advanced Materials,Shenyang 110016,China)

机构地区：[1]辽宁科技大学机械工程与自动化学院,辽宁鞍山114051 [2]中国科学技术大学材料科学与工程学院,沈阳110016 [3]中国科学院金属研究所师昌绪先进材料创新中心,沈阳110016

出　　处：《兵器装备工程学报》2022年第7期14-19,共6页Journal of Ordnance Equipment Engineering

基　　金：中国-白俄罗斯政府间科技交流项目(CB02-09);国家重点研发计划政府间国际科技创新合作重点专项资金项目(SQ2018YFE011170);中央引导地方科技发展专项资金项目(2020JH6/10500018)。

摘　　要：本文对某断面收缩率高达82%的TC4轴类件楔横轧高精度成形工艺进行了研究。首先进行板式楔横轧模具设计,并采用有限元软件Deform-3D进行热力耦合仿真模拟对设计方案进行优化,分析了轧件成形过程中的温度变化、应力-应变分布、损伤演变等结果。基于有限元模拟结果统计分析了不同温度下的轧件尺寸。结果表明,在750~900℃,随着轧制温度升高,变形区直径随之增大。最后对IM500板式楔横轧机进行了轧制实验,实验结果与模拟结果较为吻合。因此大断面收缩率TC4的楔横轧高精度成形工艺是可行的,轧制温度应不低于850℃。The precise cross wedge rolling process of a TC4 alloy shaft with the large area reduction more than 82%was investigated in this paper.First,flat cross wedge rolling dies were designed.Then the cross wedge rolling processes were optimized by using the thermal-mechanical coupling simulation with Deform-3 D software.Not only the distribution of stress,strain and temperature,but also the damage evolution was discussed.The feature diameters of the rolled parts at different temperature were statistically analyzed based on the simulation results.It showed that the diameter of deformation zone increases with the rolling temperature increasing between 750℃ to 900℃.Finally,cross wedge rolling experiments were carried out with a self-made IM500 flat cross wedge rolling mill.The experimental results were in good agreement with the simulation ones.Therefore,the high-precision cross wedge rolling forming process of TC4 parts with large area reduction is feasible,and the rolling temperature shall be above 850℃.

关 键 词：TC4钛合金 板式楔横轧 数值模拟 损伤 大断面收缩率 

分 类 号：TG339[金属学及工艺—金属压力加工]