Electric Fusion Welding Pipe Process

Electrofusion is an electrical fusion process by which an external sleeve fitting incorporating an element is installed to poly pipe or fittings and with application of electrical current they are welded to each other.

Electric fusion welding pipe process. The efw pipe divison consists of a jco forming press helical spiral mill inside and outside welding system heat treatment furnace and testing facilities. Efw pipe vs erw pipe. Efw pipe vs erw pipe. Fusion welded method of new polyethylene pipe.

Due to the high temperature phase transitions inherent to these processes a heat affected zone is created in the material. Efw is the abbreviation of electric fusion welding. Fusion welding is a generic term for welding processes that rely on melting to join materials of similar compositions and melting points. The weld flash can be removed from the outside or inside surfaces.

External application of pressure is not required for fusion welding processes except for resistance welding where substantial contact pressure is required during. Electric fusion welding efw steel pipe refers to an electron beam welding the use of high speed movement of the electron beam directed impact kinetic energy is converted to heat the workpiece so that the workpiece leaving the melt the formation of the weld. The current applied to the fitting is regulated and supplied by an electrofusion welding machine which controls the amount of voltage amps and welding time supplied to a. Efw electric fusion welding steel pipe refers to an electron beam welding the use of high speed movement of the electron beam directed impact kinetic energy is converted to heat the workpiece so that the workpiece leaving the melt the formation of the weld.

The process may or may not require the use a filler material. Electric fusion welding efw steel pipe refers to an electron beam welding the use of high speed movement of the electron beam directed impact kinetic energy is converted to heat the workpiece so that the workpiece leaving the melt the formation of the weld. 755 although some techniques like beam welding often minimize this effect by introducing comparatively little heat into the workpiece. Welding process employed is gtaw for root pass and saw tig for final pass with suitable filler wires as prescribed by aws specifications and asme.

The weld of the high quality erw welded pipe can reach the same level of toughness as the base metal which cannot be achieved by the submerged arc welding process. Efw steel pipe is formed by rolling plate and welding the seam.