Process for the rolling of hallow ingots on a assel rolling mill

Details Process for the rolling of hallow ingots on a assel rolling mill Process for the rolling of hallow ingots on a assel rolling mill

1995-08-24

1997-07-01

Larson, Lowell A.

Metal deforming

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

During rotation of work

72 96, B21B 1906

Patent

active

056426380

ABSTRACT:
The invention relates to a process for reducing the outside diameter and wall thickness by rolling a cylindrical hollow ingot the front part of which is fed into an Assel rolling mill, in which connection, in front of the Assel rolling mill as seen in the direction of feed, a device is provided for reducing the diameter and/or wall thickness of the rear end part of the hollow ingot threaded onto a mandrel rod. In this process, the prereduction rolls are slowly and continuously pressed against the ingot at a predetermined point near the end of the ingot to produce a conically reduced end portion.

REFERENCES:
patent: 4738128 (1988-04-01), Staat
patent: 5125251 (1992-06-01), Pettersson et al.

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