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Dissimilar Metal Essay

1777 Words8 Pages

Abstract-A study of electrical properties of two dissimilar metals joint was analyzed by different welding conditions. The joining of copper to aluminum is inevitable for certain applications in the electrical industry due to good conductivity and response offered by copper and aluminum for weight reduction. While in the majority of cases, dissimilar metals can be joined by friction welding, friction stir welding, bolted joint, fusion welding, solid-phase welding etc. In this metal joining reduces the loss in the bolded joining which are corrosion, flickers, discharges etc. The electrical conductivity study also carried out in different metal welded joints.

Index Terms: Friction welding, electrical conductivity, aluminum, copper.
I. INTRODUCTION …show more content…

While carrying out Friction stir welding on two dissimilar metals the conductivity increases and corrosion reduces. However in stir welding the metal can’t be welded again [1]. Even though Aluminum is heated to 359°C and copper was done at 560°C but these two dissimilar metals give very good welding strength. The weld pieces are subjected to compression test and it is proved the welding strength is good. The metals are welded at an r.p.m of at 1500 [2]. Because of friction stir welding the conductivity was improved
RF generator and Auger electron spectroscopy (AES) The joints are subjected to vacuum cleaning. The discharge cleaning of the Cu/Ag is analyzed through RF generator. Discharge cleaning method is used in electronic industry. Discharge cleaning experiment was carried out using the vacuum system. The system contains two stage rotary pump with the pumping speed of 4.41/s. Any impurities in the metal were analyzed by (AES) Auger electron spectroscopy. The ohm meter was measure the electrical resistance of joints in that the conductivity has an increase in the metal joint[4]. In this method, the electrical conductivity increases through discharge cleaning.
Eddy current and ACPD

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