Method and apparatus of stably controlling rolling mill

Details Method and apparatus of stably controlling rolling mill Method and apparatus of stably controlling rolling mill

1999-07-21

2000-07-04

Tolan, Ed

Metal deforming

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

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

72 106, 72 133, 72 144, B21B 3758

Patent

active

060821612

ABSTRACT:
In a stabilization control of rolling, proportional differential control of snake motion of a to-be-rolled material caused during a rolling process, is achieved on the basis of a lateral deviation of loads which are detected by load sensors disposed on a rolling mill, an instruction value for lateral deviation leveling is calculated from the lateral deviation and given to a draft device, and a roll gap is adjusted on the basis of the instruction value to stabilize the snake motion of the to-be-rolled material. A stabilization low-pass filter having a pole time constant substantially equal to a zero-point time constant of operation frequency characteristics of the rolling mill is employed in the proportional control.

REFERENCES:
patent: 4521859 (1985-06-01), Fapiano
patent: 4570472 (1986-02-01), Kuwano
patent: 4700312 (1987-10-01), Kikuma et al.

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