Apparatus for continuously producing steel pipes including using

Details Apparatus for continuously producing steel pipes including using Apparatus for continuously producing steel pipes including using

1987-01-13

1987-12-01

Godici, Nicholas P.

Metal fusion bonding

With means to deform work, filler, or flux portion before...

Comprising means forming one-piece blank into a tubular shape

228 175, 29 39, B23K 3106

Patent

active

047098457

ABSTRACT:
An apparatus for continuously producing electric-welded steel pipes by continuously supplying coiled strips as connected to one another by welding, progressively forming the strip into a tubular shape and high-frequency welding the opposed edges of the strip to form a seam. To produce required small quantities of steel pipes having varying diameters and wall thicknesses, a group of roll assemblies is replaceable by another group within a short period of time. Groups of forming, welding or sizing rolls are mountable on a polygonal bed which is lockable in position after rotation. For replacement, the bed is rotated by a hydraulic motor to bring the desired group of rolls to the proper position quickly.

REFERENCES:
patent: 2006953 (1935-07-01), Klos
patent: 2194780 (1940-03-01), Anderson
patent: 3248954 (1966-05-01), Blake
patent: 3619897 (1971-11-01), Oppermann
patent: 3707257 (1972-12-01), Wogerbauger
patent: 4339938 (1982-07-01), Nakagawa et al.

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