Electric heating – Metal heating – Of cylinders
Patent
1979-01-29
1982-06-22
Truhe, J. V.
Electric heating
Metal heating
Of cylinders
219 60A, 21912511, 21912512, 228 29, B23K 3106, B23K 912
Patent
active
043364365
ABSTRACT:
A method and apparatus for welding girth joints in pipelines using two welding heads comprises the steps of moving each of the welding heads upwards around the pipeline along the respective section of the girth joint, feeding a welding wire to each of the welding heads so that the welding wire is fed substantially tangentially with respect to the surface of the pipe, and forming a circumferential weld by moulding it to hold the molten metal of the welding bath in the welding zone. An apparatus for carrying out the method for welding girth joints in pipelines comprises an annular track structure having at least two carriages mounted thereon which are connected with drives adapted to impart a translatory motion to the carriages. Each of the carriages carries a welding head provided with a welding wire feeder and a weld moulding member arranged opposite to the joint being welded. The welding wire feeder includes a guiding nozzle extending under the weld moulding member, with its axis being oriented tangentially to the surface of the pipe to feed the welding wire into the welding zone through the groove of the joint.
REFERENCES:
patent: 2795689 (1957-06-01), McNutt
patent: 2892070 (1959-06-01), Kitrell
patent: 2892071 (1959-06-01), Kitrell
patent: 3185814 (1965-05-01), Rossner et al.
patent: 3188445 (1965-06-01), Rieppel et al.
patent: 3207881 (1965-09-01), Pagan
patent: 3268707 (1966-08-01), Thomas
patent: 3277567 (1966-10-01), Rieppel et al.
patent: 3461264 (1969-08-01), Nelson et al.
patent: 3551636 (1970-12-01), Nelson
patent: 3632959 (1972-01-01), Nelson et al.
patent: 3777103 (1973-12-01), White et al.
patent: 4132338 (1979-01-01), Bove et al.
patent: 4176269 (1979-11-01), Merrick et al.
patent: 4179059 (1979-12-01), Chang et al.
Belfor Mikhail G.
Dubovetsky Vasily Y.
Gavriljuk Jury A.
Kopylov Leonid N.
Kotov Valentin A.
George Keith E.
Truhe J. V.
LandOfFree
Method for welding girth joints in pipe lines does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for welding girth joints in pipe lines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for welding girth joints in pipe lines will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-654506