Method of controlling a hot strip finishing mill

Details Method of controlling a hot strip finishing mill Method of controlling a hot strip finishing mill

1993-06-30

1995-04-11

Larson, Lowell A.

Metal deforming

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

Including plural sensors or sensor responsive to comparison...

72205, 72240, B21B 126

Patent

active

054047382

ABSTRACT:
Continuous rolling is conducted by interposing loopers respectively between a plurality of successive stands and connecting a rear end of a preceding bar to a top end of a next bar. Roll gaps of the respective stands are each controlled by thickness control units. Interstand mass flow variations are each controlled by mass flow control units. Looper heights are controlled by looper height control units. Further, interstand tensions are controlled by looper tension control units. If no looper is provided, the interstand tensions are controlled by looperless control units. A flying thickness change control unit tracks a connecting point. The flying thickness change control unit switches over looper tension control and looperless control and changes a reference tension and a reference looper angle so that tensile and flexural forces are not applied to this connecting point.

REFERENCES:
patent: 3318125 (1967-05-01), Pullen
patent: 4162624 (1979-07-01), Morooka et al.
patent: 4335435 (1982-06-01), Miura
patent: 4507946 (1985-04-01), Koyama et al.
Proceeding of 36th congress of the Japan Society of Technology of Plasticity, No. 146, K. Sekiguchi, et al., Oct. 6, 1985, pp. 181-184.

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