دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. a form of resistance butt welding used to weld wide, thick members or members with irregular faces together, and tubing to tubing. 2. in pipeline construction, a welding technique in which low voltage is applied to each pipe joint while the ends are in light contact. This contact produces a rapid arcing, called flashing. After the pipe ends have been adequately heated, the current is abruptly increased, and die pipe joints are brought together rapidly and forcefully. The current is then reduced, excess flash material in the pipe is cleared. and the weld is completed.