Method for reduction and sizing of welded pipes and mill for eff

Details Method for reduction and sizing of welded pipes and mill for eff Method for reduction and sizing of welded pipes and mill for eff

1978-08-09

1981-04-07

Crane, Daniel C.

Metal fusion bonding

Process

With shaping

228 17, 72235, 72368, B23K 3106, B21D 512

Patent

active

042600960

ABSTRACT:
Disclosure is made of a process for reduction and sizing of welded pipes, whereby a pipe is reduced in diameter in passes formed by rolls of alternating horizontal and vertical stands. The weld zone is deformed by portions of roll passes of an equal curvature. Disclosure is further made of a mill for effecting the above method, which comprises alternating horizontal and vertical stands with rolls whose working surface is defined by arcs of at least two radii. The radius of at least one of said arcs is equal to the radius of the roll welding pass. The apices of said arcs of an equal radius are in the same plane extending through the longitudinal axis of the mill and on the line of motion of the weld.

REFERENCES:
patent: 2992318 (1961-07-01), La Tour et al.
patent: 3075484 (1963-01-01), Benteler
patent: 3590622 (1971-07-01), Elge et al.
patent: 3708354 (1973-01-01), Rowell

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