Publications

Abstract : Friction welding is a solid-state joining process where heat is produced by scouring of two faying surfaces of materials. The dissimilar joints of Monel and ETP copper are used in boiler industry for the production of stop valves, pipe couplings, and heat exchangers. Monel is a nickel alloy having greater strength and hardness. Normally, it is difficult to weld by fusion methods due to its associated properties of heating under controlled. So that micro-microscopic particles Ni3 (Al, Ti) are precipitated throughout matrix. Such problem can be alleviated by friction joining process. Friction welding process parameters play an important role in making quality weld joints. In this research work, friction welding of ETP copper and Monel is analyzed using design of experiments. The process parameters such as friction pressure, upset pressure, and friction time are designed by Taguchi’s L16 orthogonal array. The significance of quality of welding process was found by analysis of variance (ANOVA). The empirical relationship is established to predict the higher ultimate tensile strength of welded joints of dissimilar materials.