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Types of Gas Welding Process
Gas welding includes all those welding processes in which gas flame is used as a heat source for melting metals. It is further divided into three main types:
(a) Air- acetylene welding,
(b) Oxy-acetylene welding
(c) Oxy-hydrogen welding.
PRINCIPLE OF SUBMERGED ARC WELDING In submerged arc welding, the arc zone is submerged beneath the molten flux and hence there is no visible signature of the arc. Welding current
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