Welding Projection Means. Projection welding is a type of resistance welding that focuses current and force to a single point or line at the beginning of a weld. A resistance welding made by joining embossments on one or both of the parts being welded.
Where the design calls for tighter weld spacing consider using projection welding. Short length T joints eg. Projection Welding Projections low thermal-mass islands are one method of insuring proper heat balance in difficult spot-welding applications when there the parts to be welded vary in size by 51.
Size of Projection Welds.
2 The size of circular projection welds shall be designated as the diameter of the weld expressed in fractions or in decimals in hundredths of an inch and shall be shown with or without inch marks to the left of the weld symbol fig. Projection weld fasteners in general generate more precise and reliable welds as compared to spot weld fasteners. Where the design calls for tighter weld spacing consider using projection welding. A resistance welding made by joining embossments on one or both of the parts being welded.