What is Projection Welding ?
(Projection weld) Spot welding is a process in which contacting metal surfaces are joined by the heat obtained from resistance to electric current. Work-pieces are held together under pressure exerted by electrodes. Typically the sheets are in the 0.5 to 3 mm thickness range. ...
Projection welding is a modification of spot welding. In this process, the weld is localized by means of raised sections, or projections, on one or both of the