Rolling method of wide flange beam in universal rolling mill

Details Rolling method of wide flange beam in universal rolling mill Rolling method of wide flange beam in universal rolling mill

1998-02-24

1999-05-11

Hail, III, Joseph J.

Metal deforming

With use of control means energized in response to activator...

Metal deforming by use of roller or roller-like tool element

72 144, 72225, B21B37/58

Patent

active

059015926

ABSTRACT:
The method of rolling a wide flange beam results in an improved accuracy of the web thickness and the flange thickness in a universal rolling mill. Rolling a wide flange beam in a universal rolling mill having horizontal rolls and vertical rolls, switching over the positional control gain for each of drives for the horizontal rolls and drives for the vertical rolls by means of measured values of rolling load on the horizontal rolls and the vertical rolls during rolling, or filtering a control amount of the horizontal roll position calculated from a rolling load acting on the horizontal rolls and a control amount of the vertical roll position calculated from a rolling load acting on the vertical rolls to achieve different responses of horizontal roll rolling and vertical roll rolling, results in reducing mutual interference between horizontal roll rolling and vertical roll rolling caused through the rolling material.

REFERENCES:
patent: 4918964 (1990-04-01), Engel et al.
patent: 5375448 (1994-12-01), Katayama
patent: 5568032 (1996-10-01), Wakui
"Theory and Practices of Plate and Sheet Rolling", pp. 229-232, edited by the Iron and Steel Institute of Japan.
M. Tanaka et al., "Decoupled Automatic Gauge Control for Universal Rolling Mills," No. 317, (1985), pp. 48-58.

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