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Volume 06 - Welding, Brazing and Soldering Part 5

Tham khảo tài liệu 'volume 06 - welding, brazing and soldering part 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | stud Arc Welding Harry A. Chambers TRW Nelson stud Welding Division Introduction STUD ARC WELDING SW also known as arc stud welding is a commonly used method for joining a metal stud fastener to a metal workpiece. The process has been used as an alternative metal-fastening method since the Millions of specially designed and manufactured metal studs are welded by this process every week in such di industries as construction shipbuilding automotive and hard goods as well as in miscellaneous industrial applicatio This article will serve as a basic information source for those interested in accomplishing one-sided no-hole attach of metal fasteners. The sw process represents an alternative to other welding processes and is also a substitute f fastening procedures such as drilling and tapping bolting and self-tapping screws. Stud Arc Welding Harry A. Chambers TRW Nelson stud Welding Division Process Overview Stud arc welding is similar to many other welding processes including arc and percussion welding in that the base end of a specifically designed stud is joined to a base material by heating both parts with an arc that is drawn betwei two. Equipment that is unique to this process regulates the arc length and arc dwell time. After an arc is struck the weld end and the workpiece surface are brought to the proper temperature for joining and after a controlled peril time the two heated surfaces are brought together under pressure creating a metallurgical bond capable of develop full strength of the stud. There are two basic types of stud arc welding which are differentiated by the source of welding power. One type direct current de power provided by a transformer rectifier or a motor generator similar to that used in the shielded r arc welding SMAW process. The second type uses power discharged from a capacitor storage bank. The process on a de power source is known as stud arc welding whereas the process that utilizes capacitors is known as ca discharge stud welding CDSW