Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Reexamination Certificate
2006-08-08
2006-08-08
Tolan, Ed (Department: 3725)
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
C072S009200, C072S009500, C072S012100, C700S155000
Reexamination Certificate
active
07086260
ABSTRACT:
The invention relates to a method and a device for controlling the final thickness of a rolled product (B) at the outlet of a rolling mill including at least two roll stands (1–5) operating in tandem and associated with a general speed control system of the different stands, and to a device for controlling the reduction in thickness and in tension of the product (B) in each space (10–50) between two successive stands.According to the invention, the control device performs, in real time, dynamic balance, between the different stands (1–5), of the torques applied, in each stand, on the working rolls (T, T′), without any noticeable disturbance of the final thickness h5of the product (B) at the outlet of the plant.The invention enables, in particular, to optimise the productivity of a tandem rolling mill, without any engine overloading risks.
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“Automatic Gauge Control-A Primer”, James C. Parks, Jul./Aug. 2000, pp. 60-62.
“Dynamic Control Of Tension, Thickness and Flatness For A Tandem Cold Mill”, Tirlochan S. Bilkhu, AISE Steel Technology, Oct. 2001, pp. 49-54.
“Gage Improvement At LTV Steel, Indiana Harbor Works' 80-in. Tandem Mill”, Robin N. Malone et al., Aug. 1992, pp. 70-78.
“Electrical Modernization of 52-in., 5-Stand Reduction Mill at Midwest”, Kenneth E. Hand et al., Aug. 1992, pp. 60-69.
Arent & Fox PLLC
Tolan Ed
Vai Clecim
LandOfFree
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