Roll tool for cold pilger rolling of pipes

Details Roll tool for cold pilger rolling of pipes Roll tool for cold pilger rolling of pipes

1993-10-12

1995-09-19

Larson, Lowell A.

Metal deforming

By use of roller or roller-like tool-element

With tool inside hollow work

72214, 722525, B21B 2500

Patent

active

054507413

ABSTRACT:
A roll tool for cold pilger rolling of pipes in which the reducing zones of the two tool grooves, starting from the transition from the reducing zone to the smoothing zone, have transitional areas without kinks which extend parabolically. The curve describing the mandrel groove runs parallel to the parabolic transitional area of the roll groove proceeding from the location of the narrowest gap between the roll and mandrel while forming a wall smoothing zone.

REFERENCES:
patent: 3813911 (1974-06-01), Bibighaus

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