Welding-A Fabrication Process

Welding is a method for joining different metals.The large number of materials that are welded are metals and their alloys, although the term welding refers to the joining of other materials such as thermoplastics.
Welding joins different metals alloys with the help of a number of processes in which heat is supplied either electrically or by a gas torch.
In order to join two or more pieces of metals together the most essential requirement is heat.Pressure may also be employed, but this is not essential in many processess.
The use of welding in today's technology is extensive. It had a phenomenal rise since 1930; this growth has been faster than the general industrial growth. Many common everyday use items e.g. automobiles,aircraft,ships,electronics equipments,machinery,household appliances etc, depends upon welding for their commercial construction.