Projection Welding Can Be Considered As A Mass Production Form Of. The automobile industry uses projection welding to a very large extent. Projection welding is a modification of spot welding in which the weld is localized by means of raised sections or projections on one or both of the workpieces to be joined.
Gas welding can produce a hot flame of temperature about 3000-3500 ⁰C. Lancaster in Metallurgy of Welding Sixth Edition 1999 435 Braze welding. Typically laser welding has been successfully used for welding of concision resistant steels and titanium alloys in which high quality welds have been produced in sheets of thickness 0-1 to 2 mm.
It is also expected to be used in high quality precision work as in aerospace industry and high speed mass production applications as in automobile industry.
Projection welding can be regarded as a mass production form of welding. This process is a resistance welding process in which two or more than two spot welds are made simultaneously by making raised portions or projections on predetermined locations on one of the workpiece. Lower electrode efficiency and maintenance. Another benefit is that it has a fairly low price point and works well for mass production processes.