Rotary rolling mill and method for rolling of tubular products

Details Rotary rolling mill and method for rolling of tubular products Rotary rolling mill and method for rolling of tubular products

1981-04-22

1983-08-02

Larson, Lowell A.

Metal deforming

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

During rotation of work

72100, B21B 1902

Patent

active

043958966

ABSTRACT:
The present invention is an improvement of such methods as the Stiefel-Mannesman piercing, and the Mannesmann piercing methods with a pair of driven rolls which impart a screw movement to the work piece, and has the roll axis inclined to the centerline of mill. Instead of a conventional pair of driven disc rolls or shoes, one driven disc roll and one shoe or one guide roll are used in the invention to form the rolling pass together with the driven rolls, and the centerline of pass is greatly off set from the centerline of mill toward the one shoe or guide roll. The operating efficiency and quality of tubular products are simultaneously enhanced.

REFERENCES:
patent: 1115495 (1914-11-01), Brock

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