Method and apparatus for plate edge preparation for UOE pipe mak

Details Method and apparatus for plate edge preparation for UOE pipe mak Method and apparatus for plate edge preparation for UOE pipe mak

1981-02-12

1984-02-14

Combs, Ervin M.

Metal deforming

By tool-couple pressing together adjacent surface portions...

To form longitudinally-seamed tube

72319, 72388, B21D 5100, B21D 1100, B21D 3900

Patent

active

044308728

ABSTRACT:
Method and apparatus for preparing an edge of a steel plate in a UOE process of making steel pipes, wherein a steel plate edge is positioned between a male die and a female die which have a curvature as desired in the edge, and held substantially horizontally by holding means outside the die, and the female die is moved against the edge and the male die by action of a lever which is pivoted about a fulcrum point which is inward of the plate edge and which has a moving means at the other end of the lever opposite the fulcrum point a predetermined distance from the female die. Advantageously, such method and apparatus enable formation of steel pipes using the UOE method having thicknesses previously difficult to produce without peaking of the produced seams.

REFERENCES:
patent: 3400568 (1968-09-01), Brandner
patent: 4142394 (1979-03-01), Damman
patent: 4218909 (1980-08-01), Wright
patent: 4294095 (1981-10-01), Kawano et al.

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