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Stud Welding
This is an arc welding process in which the arc is struck between a metal stud or similar part and the base metal. The arc heats the mating ends to a proper temperature after which they are brought together under pressure. Operator positions the stud, held in a portable pistol shaped tool called stud gun. Once initiated the welding time and final driving home of stud to complete the weld are controlled automatically by a timing device. A ceramic ferrule is used with each stud. The ferrule concentrates the heat, prevents influx of air to the molten metal and confines the molten metal to the weld zone. The stud welding can also be carried out by resistance welding or friction welding.
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