RESISTANCE WELDING: INTRODUCTION AND RECENT DEVELOPMENTS

Aim of this paper is to discuss about the in-opposition welding and the ongoing advancement in same zone. Procedure may include current as much as few kilo ampere and voltage of 2 to 12 volts. Weight, current and voltage necessity differ from plate to plate as their thickness and material changes in an opposition welding process there are two anodes made of copper or tungsten or any of their combination. These materials are picked on the grounds that they have high electrical conductivity and they don't twist much when there temperature is raised. Spot welding is a standout amongst the most ordinarily utilized opposition welding in view of prerequisite of welding slender sheets with one another in huge number of modern application for instance downpour mentor fabricating, body of a vehicle and some more. there are a lot more opposition welding forms like crease welding, projection welding, streak welding, upset butt welding, high recurrence obstruction welding, high recurrence enlistment welding. AC is supply is most acclaim out of these three on account of its effortlessness. DC supply can utilized where substantial measure of current is required. in this procedure there are two cathodes one of which is stationary and the other is mobile. Mainly this operation is used in manufacturing industry for welding of various materials for better performance.