Influence of Process Parameters of 316LN Hot Wire Filling Laser Welding on the Blunt Edge Layer Forming Quality

Abstract

Laser welding with hot wire addition is a new type of welding method. In order to search for appropriate laser welding technological parameters, main technological parameters have ran orthogonal optimization tests, root face layers have ran orthogonal experiments, impacts on root face forming qualities of technological parameters have been analyzed. Experimental results show that, the most influential technological parameter of weld width is welding speed, by lowering welding speed heat heat input in per unit of time will be increased, weld width decreases with the increase of defocusing amount and decrease of density of power.

Optimization of laser repair parameters for precracked 304 stainless steel components with nanocomposites addition

“…The influence of different laser deposition parameters on microstructure and microhardness were clarified, providing the basis for optimizing the process parameters to improve the quality of laser deposition repair. Xu and Zhang 7 studied the influence of welding speed, laser power, wire feeding speed, and defocusing amount on root face forming qualities by Taguchi experiment, and found that welding speed had the greatest influence on the welding width. Reducing laser power or increasing welding speed had a positive impact on weld reinforcement.…”