Welding Process

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1.2 Types of welding
There are so many types of welding process to weld metal or non-metals are given below.
Welding is generally two types: (i) Conventional (ii) Nonconventional
1.2.1. Conventional welding
Arc welding
(i) Shielded metal arc welding (SMAW), (ii) Gas metal arc welding (GMAW), (iii) Flux cored arc welding (FCAW), (iv)Gas tungsten arc welding (GTAW) or tungsten inert gas (TIG) welding (v) Submerged arc welding (SAW), (vi) Plasma Arc Welding, (vii) Carbon arc welding, (viii) Atomic hydrogen welding, (ix)Arc spot welding, (x)Flux cored arc welding, (xi)Stud arc welding
Gas welding
(i) Oxy-acetylene welding
(ii) Air acetylene welding
(iii) Oxy-hydrogen welding
(iv) Pressure
(v) gas welding
Resistance welding
(i) Spot welding (ii) Seam welding (iii) …show more content…
TIG can be used to weld most steels including stainless steel, nickel alloys such as Monel and Inconel, titanium, aluminum, magnesium, copper, brass, bronze, and even gold. GTAW can also weld dissimilar metals to one another such as copper to brass and stainless to mild steel.
1.3.1.2 Concentrated Arc
The concentrated nature of the GTAW arc permits pin point control of heat input to the work-piece resulting in a narrow heat-affected zone. A high concentration of heat at point is an advantage when welding metals with high heat conductivity such as aluminum and copper. A narrow heat-affected zone is an advantage because this is where the base metal has undergone a change due to the superheating of the arc and fast cooling rate. The heat-affected zone is where the welded joint is weakest and is the area along the edge of a properly made weld that would be expected to break under a destructive test.
1.3.1.3 No

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