不锈钢平板焊接过程的温度场模拟  

Temperature Field Simulation in Welding Process of Stainless Steel Plate

作　　者：袁训锋[1] 柯昌珍 陈武彦 田敏[1] 

机构地区：[1]商洛学院,陕西商洛726000

出　　处：《中国铸造装备与技术》2015年第1期9-11,共3页China Foundry Machinery & Technology

基　　金：陕西省教育厅专项科研计划资助项目(14JK1223);陕西省教育科学"十二五"规划资助项目(SGH13401);商洛学院博士启动基金资助项目(12SKY01-1)

摘　　要：以厚大不锈钢平板件作为焊接材料,采用直接差分法求解热传导方程,运用C++语言编写模拟程序,再现焊接过程中的温度场分布,研究了热量集中系数对温度场分布及热影响区的影响。结果表明:焊接过程中,在移动热源前方等温线较密集,热源后方等温线较稀疏,以焊接点为中心,热扩散层呈辐射状。随着热量集中系数k的增加,材料的最高温度和最低温度均升高,热影响区域面积减小。The effect of heat concentration coefficient on the temperature field distribution and heat-affected zone has been studied, with thick stainless steel plates being used as welding material of which the temperature field distribution in the welding process reappeared with the operation of a simulation program written by C＋＋ language for the heat conduction equation built with direct difference method. The results showed that in the process of welding, isotherm appeared intensive in fi＇ont of moving heat source and sparse behind it, and with the welding point as the center, heat diffusion layer appeared radially. With the increase of heat concentration coefficient k, both the maximum and minimum temperature of the material increased while the heat affected zone reduced.

关 键 词：焊接过程 温度场 直接差分法 数值模拟 

分 类 号：TG457.11[金属学及工艺—焊接]