The temperature fields and the weld pool geometries for laser + GMAW-P hybrid welding, laser welding and pulsed gas metal arc welding (GMAW-P) are numerically simulated in quasi-steady state by using the developed ...The temperature fields and the weld pool geometries for laser + GMAW-P hybrid welding, laser welding and pulsed gas metal arc welding (GMAW-P) are numerically simulated in quasi-steady state by using the developed heat source models, respectively. The calculated weld cross-sectious of the three types of welding processes agree well with their respective measured results. Through comparison, it is found that the temperature distribution of laser+GMAW-P hybrid welding possesses the advantages of those in both laser and GMAW-P welding processes so that the improvement of welding productivity and weld quality are ensured.展开更多
基金The authors are grateful to the financial support for this research from the National Key Technologies R&D program of China under Grant No. 2006BAF04B10, and The key project of Natural Science Foundation of Heilongjiang Province under Grant No. ZJG0601.
文摘The temperature fields and the weld pool geometries for laser + GMAW-P hybrid welding, laser welding and pulsed gas metal arc welding (GMAW-P) are numerically simulated in quasi-steady state by using the developed heat source models, respectively. The calculated weld cross-sectious of the three types of welding processes agree well with their respective measured results. Through comparison, it is found that the temperature distribution of laser+GMAW-P hybrid welding possesses the advantages of those in both laser and GMAW-P welding processes so that the improvement of welding productivity and weld quality are ensured.