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.

Objective: In this review paper author discusses about the enhancement of TIG welding. Tungsten Inert Gas (TIG) welding will be welding procedure of uniting diverse materials with top notch weld dab by electric curve age between non consumable terminal and work piece under a protecting gas. It is utilized to weld ferrous and non-ferrous metals. It is otherwise called Gas Tungsten Arc Welding (GTAW) process. This procedure infer a few focal points like low warmth affected zone, joining of not at all like metals, nonappearance of slag, high warmth focus and so forth contrasted with other welding process. The TIG welding parameters are the most essential components influencing the quality, profitability and cost of welding. TIG Welding execution is for the most part assessed dependent on Tensile Strength of the weld, Weld dot Geometry, Hardness, Depth of Penetration and Depth proportion Also known as Aspect proportion. In the present investigation, we examine the impact of the distinctive welding parameters, for example, welding speed, control source, kind of current, protecting gas stream rate, cathodes, filer wire, Electrode hole and sorts of protecting gases which fits best to decide curve steadiness, circular segment entrance and deformity free welds.