WELDING METHOD FOR STEEL FRAMES

PURPOSE:To reduce the residual quantity of magnetism on steel frames at the time of electric welding by arranging welding guns at the welding positions, providing ground electrodes freely movably on steel-frame beams and connecting both to a welding power source. CONSTITUTION:Beam fixing parts 1a ar...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAHASHI TAKESHI, YABANA KICHIJI, ISHIKAWA TOSHIYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PURPOSE:To reduce the residual quantity of magnetism on steel frames at the time of electric welding by arranging welding guns at the welding positions, providing ground electrodes freely movably on steel-frame beams and connecting both to a welding power source. CONSTITUTION:Beam fixing parts 1a are formed on steel-frame pillars 1. The steel-frame beams 2 of wide flange shape steel are fixed by bolts 3 between the beam fixing parts 1a and coupling parts between the steel-frame pillars 1 and the steel-frame beam 2 are welded together. The welding guns 5 are arranged at welding places. Ground side movable electrode parts 6 are arranged freely-movable at the steel-frame beams 2. The welding guns 5 and the ground side movable electrode parts 6 are connected to the DC welding power source of a stud welding machine 7. Consequently, a welding current can be prevented from flowing repeatedly locally by moving the ground side movable electrode parts 6 and changing the positions of the ground electrodes 15 at the time of performing electric welding.