Computational methods of heat affected zone determination during Arc Weld surfacing

In the paper, the methods for determining heat affected zones during arc weld surfacing is presented. For this purpose, numerical simulations of the temperature field were performed using the Ansys and Sysweld programs based on the finite element method. The Goldak heat source model was used in the computations. Based on the maximum temperature values, the characteristic heat affected zones (remelting zone, fusion line, austenitization zone) have been determined. The results of calculations were compared with the boundaries of individual zones determined by the analytical method using a double volumetric Gaussian-parabolic heat source model and obtained experimentally. Finally, the possibility of mapping the fusion line was assessed using particular heat source methods, programs and models.