Prediction of HAZ width in submerged arc welding of mild steel

2018 4th International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Yan, Chunyan^1 ; Wu, Lichao^1 ; Wu, Wei^1 ; Yuan, Yuan^1 ; Yang, Xingwei^2

College of Mechanical and Electrical Engineering, Hohai University, Changzhou, China^1

Silkroad Industrial Control Equipment Co., Ltd, Shanghai, China^2

关键词: Characteristic temperature;    Hardness measurement;    Metallographic examination;    Non-linear relationships;    Simulation prediction;    Thermal-physical property;    Threedimensional (3-d);    Welding thermal cycles;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/252/2/022078/pdf
DOI  :  10.1088/1755-1315/252/2/022078

来源: IOP

【 摘 要 】

A three-dimensional (3D) finite element (FE) model for the submerged arc welding process of medium thick plates was established. The welding temperature distribution for varying heat input was obtained by taking into account nonlinear relationships between temperature and thermal-physical properties. According to the characteristic temperatures of welding thermal cycles, widths of heat-affected zones (HAZs) were obtained. The widths of HAZs were also investigated through combination of metallographic examination and hardness measurements. The simulation prediction results and experimental results were compared and had generally good conformity.