JOINING OF DISSIMILAR MATERIALS SS304 AND COPPER PLATE USING LASER WELDING

MECHANICAL ENGINEERING

Laser welding with high power density, high degree of automation and high production rate is extremely advantageous in industrial applications. Steel and its alloys are extensively used in automobile frame, construction (harbour, tunnels etc.), transport (anchor chain, train, and rails), house hold application, owing to its high tensile strength and corrosion resistance property. Nd:YAG laser welding process has successfully used for joining a dissimilar metal AISI 304L stainless steel and pure copper plates. The current research is based on experiments on laser welding of 2mm thick AISI 304L stainless steel and 2mm thick pure copper plate using the Nd:YAG laser machine. In this study, a statistical design of experiment (DOE) will used to optimize selected LBW parameters (laser power, welding speed and pulse duration). Taguchi approach is using to design the experimental layout. A statistical design of experiment (DOE) method taguchi approach with help of MINITAB software method will utilized to develop an effective model to optimize weld strength and weld geometry by incorporating process parameters such as welding speed, laser power and pulse duration. Tensile strength of joint is determined using a universal testing machine (UTM).

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