Method of reducing tubular products

Details Method of reducing tubular products Method of reducing tubular products

1989-04-26

1991-01-15

Larson, Lowell A.

Metal deforming

By use of roller or roller-like tool-element

Including tautening of work during deformation

72 14, B21B 3908

Patent

active

049844440

ABSTRACT:
A method of reducing tubular metal products includes the steps of selecting a tube to be reduced having the specified initial wall thickness necessary to produce the desired finished wall thickness, and reducing the tube by passing it through a succession of roll stands which reduce the end portions of the tube without applying tension between roll stands and which reduce the portion of the tube intermediate the end portions with application of tension. The method produces reduced tubular products with substantially uniform wall thickness throughout eliminating the necessity of cropping end portions which have out-of-specification wall thickness.

REFERENCES:
patent: 4382376 (1983-05-01), Brauer et al.
Peble, H. J., "Stretch-Reducing Mills--Modern Technology & Developments", in Tube & Pipe Technology (Jan./Feb. 1989), pp. 29-36.

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