Optimization of Laser-MAG Hybrid Welding Parameters of Ship Steel Based on Response Surface Methodology

In this paper, the optimization of laser-MAG hybrid welding parameters of 10CrNi3MoV ship steel was developed. Using the Box-Behnken Design (BBD) model in Response Surface Methodology (RSM) and taking laser power, welding speed and welding current as response factors, the design matrix was completed and verified by experiment. The regression model associated with welding parameters was established by measuring the response indices, such as penetration, tensile strength and impact absorption energy. Through the model check, it was found that the accuracy of penetration and tensile strength of the model was high, and the optimized parameters were as follows: laser power (P) = 3700 W, welding speed (V) = 0.8 m/min, wire feeding speed (Vs) = 7 m/min. On the premise of meeting mechanical performance inspection standards, the maximum penetration was 8 mm.

Automated summary

This paper developed the optimization of laser-MAG hybrid welding parameters for 10CrNi3MoV ship steel. The regression model associated with welding parameters was established based on response indices such as penetration and tensile strength. The optimized parameters were determined to be laser power of 3700 W, welding speed of 0.8 m/min, and wire feeding speed of 7 m/min. The maximum penetration achieved was 8 mm, meeting the mechanical performance inspection standards.