TY  - JOUR
AB  - Purpose The purpose of this paper is to establish a three-dimensional flow field model of the Invar alloy laser–metal inert gas (laser–MIG) hybrid welding process to investigate the influence of different heat sources between different layers and to analyze the flow field based on the two different heat source models for the multilayer welding.Design/methodology/approach The Invar steel plates with 19.5 mm thickness are welded into three layers’ seam using the hybrid laser–MIG welding technology. The flow field based on different heat source models is studied and then used to investigate the influence of different heat sources in different layers during the laser–MIG hybrid welding process. The simulation results of flow field using two different heat source models are compared with experiments.Findings The flow field simulations results show that using the Gaussian rotating body heat source model to simulate the temperature field is more consistent with the experiment of the hybrid laser–MIG welding where its flow field between different layers better reflects the characteristics of the hybrid laser–MIG welding.Originality/value The findings will be useful in the study of a variety of thick-plate laser–MIG hybrid welding process fluid flows.
VL  - 28
IS  - 4
SN  - 0961-5539
DO  - 10.1108/HFF-02-2017-0069
UR  - https://doi.org/10.1108/HFF-02-2017-0069
AU  - Zhan Xiaohong
AU  - Zhang Qi
AU  - Wang Qibing
AU  - Chen Jie
AU  - Liu Hongbing
AU  - Wei Yanhong
PY  - 2018
Y1  - 2018/01/01
TI  - Numerical simulation of flow field in the Invar alloy laser–MIG hybrid welding pool based on different heat source models
T2  - International Journal of Numerical Methods for Heat & Fluid Flow
PB  - Emerald Publishing Limited
SP  - 909
EP  - 926
Y2  - 2024/04/24
ER  -