Welding is a process of joining two metal pieces by the
application of heat.
Welding is the least expensive process and widely used allover
the world now a days in fabrication.
Welding joints different metals, in which heat is supplied
either electrically or by mean of a gas torch.
Different welding processes are used in the manufacturing
of Auto mobiles bodies, structural work, tanks, and general machine repair
work.
In the industries , welding is used in refineries and pipe
line fabrication. It may be called a secondary manufacturing process.
Gas Welding:
- Oxy-Acetylene
- Air-Acetylene
- Oxy-Hydrogen
Arc Welding:
- Carbon arc
- Metal arc
- Plasma arc
- Gas Metal arc
- Gas Tungsten Arc
Resistance Welding:
- Butt
- Spot
- Seam
- Projection
NewerWelding:
- Electron Beam welding
- Laser Welding
Solid Stare Welding
- Friction
- Ultrasonic
- Diffusion
- Explosive