摘要
本文主要针对电镦过程中温度分布不均对晶粒尺寸造成的影响,设计晶粒匀细化的补热新模式,为实际电镦生产中获得较好的微观组织提供理论依据。在Deform-2D分析平台构建宏介观多尺度电镦工艺有限元分析模型进行电镦模拟,根据有限元模拟结果,针对性采用电磁感应加热对电镦过程特定时刻的坯料进行定时补热,分析电磁感应补热对电镦件的温度分布、内部动态再结晶晶粒尺寸的影响,发现电磁感应加热补热模式能有效的改善电镦件内部的晶粒尺寸分布。
Aiming at the influence of uneven temperature distribution on grain size during upsetting process, a new heating mode of grain uniform refinement is designed to provide theoretical basis for obtaining better microstructure in actual upsetting production. Based on deform -2D analysis platform, a Macro -mesoscopic and multi-scale finite element analysis model of electric upsetting process is built to simulate the process. According to the results of finite element simulation, electromagnetic induction heating is used to heat the blank at a specific time in the process of electric upsetting. The effect of electromagnetic induction heating on the temperature distribution and the dynamic recrystallization grain size of the upsetting parts is analyzed. It is found that electromagnetic induction heating is used to supplement the upsetting process. The thermal model can effectively improve the grain size distribution in the upsetting parts..
作者
鲁宏
戴魏魏
权国政
蒋立鹤
LU Hong;DAI Weiwei;QUAN Guozheng;JIANG Lihe(1 .Nanjing International Marine Equipment & Spares LTD.,Nanjing 211121, Jiangsu China;College of Material Science and Engineering, Chongqing University, Chongqing 400044, China)
出处
《锻压装备与制造技术》
2019年第3期126-129,共4页
China Metalforming Equipment & Manufacturing Technology
基金
重庆市基础研究与前沿探索项目（cstc2018jcyjAX0459）
重庆市基础与前沿研究计划项目（cstc2016jcyjA0335）
华中科技大学材料成形与模具技术国家重点实验室开放基金课题（P2018-020）
关键词
电镦
晶粒度
电磁感应
有限元模拟
Electric heating upset
Grain size
Electromagnetic induction
Finite element simulation
