Numerical simulation of temperature field in laser-arc hybrid welding of wear-resistant steel

摘要

Using ABAQUS software and cylindrical ellipsoid and body heat sources with a peak-heat-fluxattenuation function,a finite element model of the temperature field in the laser-arc hybrid welding of 4.5-mm BW300 TP wear-resistant steel is proposed.The proposed model considers convection,radiation,molten pool flow,and heat conduction effect on temperature.A comparison of the simulation and actual welding test results confirms the reliability of the model.This welding heat-process model can provide the cooling rate at any position in the heat affected zone(HAZ) and can be used as a reference for the analysis of material properties and for process optimization.