International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Laser welding has become a highly effective technique for joining of metal sheets, offering precision and minimal thermal distortion. The quality of the welds, however, is significantly influenced by the proper selection and control of process parameters. This study focuses on the optimization of key parameters like laser power, welding speed, wire feed rate, and beam oscillation through experimental welding trials.
The practical part of the research involved welding thin sheets with LW-2000W device at various parameter settings, followed by visual inspection and metallographic analysis of the final welds. The findings provide insights into how parameter optimization can enhance consistency and overall process reliability, offering valuable guidelines for industrial applications where high precision is required.

Austenitic stainless steels are widely used in various industries, including petrochemicals, food processing, and textiles, due to their excellent corrosion resistance, acceptable mechanical properties, and cost-effectiveness. Additionally, their good weldability makes laser welding a popular choice for manufacturing various designs. However, achieving optimal weld quality in laser welding requires precise and controlled adjustment of several key parameters. In this study, the effects of two fundamental process parameters—laser power and welding speed—on the mechanical properties of laser-welded AISI 316 stainless steel structures were investigated. For this purpose, a 2-factor, 3-level full factorial experimental design was implemented. The welded structures were subjected to tensile testing, and their microstructures were analysed.

The CO laser welding technique was suggested as a method of joining dissimilar materials. The corrosion resistance at high 2 temperatures of the joint of TP347HFG and VM12-SHC stainless steel was investigated. The stainless steel was butt welded. Materials were examined by the thermogravimetric method. The surface and microstructure of the sample were observed in a scanning electron microscope (SEM). The results showed the substantial intermixing of both substrates within the fusion zone. The thermogravimetric data indicate that at high temperatures and air condition the joint and the stainless steel undergo chemical corrosion. The joint has acquired medium resistance for chemical corrosion in relation to both steels.

The CO laser welding technique was suggested as a method of joining dissimilar materials. The corrosion resistance at high 2 temperatures of the joint of TP347HFG and VM12-SHC stainless steel was investigated. The stainless steel was butt welded. Materials were examined by the thermogravimetric method. The surface and microstructure of the sample were observed in a scanning electron microscope (SEM). The results showed the substantial intermixing of both substrates within the fusion zone. The thermogravimetric data indicate that at high temperatures and air condition the joint and the stainless steel undergo chemical corrosion. The joint has acquired medium resistance for chemical corrosion in relation to both steels.