Welding Technology
Welding is a process of joining two or more parts of metal. It provides a permanent joint. Most of the materials can be welded by one process or the other. Welding is comparatively a new comer amongest the fabrication processes. Though there are a number of well-established welding processes but arc welding with coated electrodes is still the most popular welding process in all over the world.
Arc welding in its present form started in 1880's however, the demand for large scale production of heavy items like ships, pressure vessels, construction of bridges etc. provided the necessary impetus for welding to come of age.
Welding processes widely used in the industry include Oxy-acetylene as manual metal arc required welding.