摘要
焊接过程中由于温度场作用,导致工件内部存在残余应力,从而使工件产生变形,加工精度受到影响。本文对焊接温度传导过程以及受力情况进行分析,总结了影响焊接质量的相关因素,并以TC4钛合金为例,对其在进行激光—MIG焊接时的温度场变化及应力变化进行数值模拟,为分析焊接时失稳变形以及变形控制方法的研究提供理论参考。
Due to the temperature field, welding will lead to the existence of residual stress in the workpiece so that the workpiece deformation and machining accuracy is affected. This paper analized the welding temperature conduction process as well as the stress situation and summarized the influence of welding quality of the relevant factors. Taking TCA titanium alloy as an example, the numerical simulation of the temperature field and the stress changes during the laser-M1G welding is carried out which provides a theoretical reference for the analysis of the instability deformation and deformation control.
出处
《工具技术》
北大核心
2016年第12期68-70,共3页
Tool Engineering
基金
国家自然科学基金(31172144)
吉林省科技发展计划项目(201303040NY)
关键词
TC4钛合金
温度场分析
数值模拟
变形
TC4 titanium alloy
temperature field analysis
numerical simulation
deformation
