Multidimensional Experimental Analysis and Effects of Laser Welding Process Parameters on 304 Stainless Steel Thin Sheets
Zhang Xuejian, Hu Xiaobing, Gao Yunkai, Li Hang, Sun Hong and Chen Haijun
To conduct an in-depth investigation into the impact of laser welding process parameters on the welding surface quality and welding deformation, qualitative laws summarising the influence of welding parameters, proposing optimal combinations of welding process parameters, multidimensional experimental analysis is used to analyse 304 stainless steel sheet. Firstly, the effects of the main laser welding parameters are initially determined by simulation, then a multidimensional experimental matrix was established, encompassing a variety of methodologies, such as single-factor, single-factor targeted, orthogonal, repeatability. In the experiments, the weld surface quality and weld distortion were assessed using a high magnification CCD camera and a six-jointed hand-held measuring arm, respectively. Through simulation and process experiments, the qualitative laws of welding speed, welding power and defocusing amount on welding surface quality and welding deformation are summarised, and the effect of welding power is further subdivided into the separate laws of peak welding power and duty cycle. The implications of this multidimensional experimental analysis are significant for intelligent upgrading and transformation of tasks within mechanical manufacturing enterprises. This meticulous experimental analyses and qualitative research contributes to the refinement and enhancement of previously vague empirical rules, thereby providing a clearer and more coherent understanding of qualitative patterns. This study is a foundational step towards facilitating the intelligent transformation of relevant enterprises and workshops.
Keywords: Laser welding parameters, multidimensional experimental matrix, weld surface quality, welding deformation, flatness difference