System for planishing metal pipe

Details System for planishing metal pipe System for planishing metal pipe

1979-12-10

1981-12-22

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

Spherical tool

72 96, B21C 3730

Patent

active

043064370

ABSTRACT:
Metal pipe is planished by passing it longitudinally between two concentric circular arrays of independently rotatable planishing elements which are urged against the inner and outer surfaces of the pipe. The two circular arrays of planishing elements are radially aligned with each other on opposite sides of the pipe wall, and the pipe is rotated relative to the two arrays of planishing elements while the pipe is being passed therebetween.

REFERENCES:
patent: 1143101 (1915-06-01), Brinkman
patent: 1273475 (1918-07-01), Foster
patent: 3643485 (1972-02-01), Marcovitch

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