Based on pre-processing software and post-processing software

the numerical simulation and experimental comparison of the temperature field of the three arc welding processes of thick copper plates are carried out. First use the pre-processing software to perform modeling and meshing

and then use the post-processing software to complete the welding simulation process. This study mainly uses postprocessing software to adjust welding current

arc voltage

distance between welding guns

welding speed

wire feeding speed and other process parameters to simulate the welding temperature field of thick copper plate under multiple sets of process parameters. Then

the welding temperature field nephogram of different welding parameters is compared and analyzed

in order to obtain the best welding parameters（Welding distance of 16 mm

welding current 300 A

TIG welding gun voltage is 16 V

MIG welding gun voltage is 20 V

MIG welding torch wire speed of 10 mm/s）. The simulation results are as follows: the melting distance of MIG welding torch is 6.4 mm

the penetration depth is 4.8 mm

the length of molten pool is 12.6 mm.