压力容器用钢板焊接温度场模拟与验证

针对某公司生产的压力容器用钢16MnR,为了优化焊接工艺参数,能够提供不同焊接工艺条件下的准确温度场,有效地为应力应变场分析做准备,采用ANSYS有限元对60 mm厚板埋弧焊进行温度场数值模拟,并将模拟结果与相同工艺条件下焊接试验结果进行比较验证.结果表明,模拟结果与试验结果基本吻合;试验特征点越接近热源,温度升高越迅速且峰值越高;道间温度随着焊接道次的增多而逐步上升,只有控制道次间温度来获得均匀组织;这对获得优良的焊接构件有着重要的意义.

Test verifies and simulation on welding temperature field of steel plate for pressure vessel

To optimize welding process parameters,and effectively analyze stress and strain field for further work,16MnR steel used for pressure vessel has been subjected to numerical simulation obtain temperature field by ANSYS with the different welding parameters on 60 mm thick plate.The simulation results and welding experimental results were in good aqreement.It was found that the calculated values of temperature distribution were close to the measured values.The closer experimental feature point to characteristic point of heat source,the more quickly temperature rise and the higher peak temperature reaches.With the weld passes increasing,the interpass temperature rise gradually.The uniform microstructure can be obtained just by careful comtrol of the interpass temperature.These reserch results are significant for designers to obtain excellent welding structure.