BE785304A - Constant exit thickness from rolling mill - by controlling a mill variable during roll acceleration - Google Patents

Constant exit thickness from rolling mill - by controlling a mill variable during roll acceleration

Info

Publication number
BE785304A
BE785304A BE785304A BE785304A BE785304A BE 785304 A BE785304 A BE 785304A BE 785304 A BE785304 A BE 785304A BE 785304 A BE785304 A BE 785304A BE 785304 A BE785304 A BE 785304A
Authority
BE
Belgium
Prior art keywords
mill
thickness
controlling
variable
exit thickness
Prior art date
Application number
BE785304A
Other languages
French (fr)
Inventor
J D Sterrett
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of BE785304A publication Critical patent/BE785304A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/24—Automatic variation of thickness according to a predetermined programme

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

Thickness of sheet exiting from a rolling mill which is being accelerated is controlled by (a) generating a direct action anticipatory electric signal, proportional to the rate of change of a variable of the mill necessary to maintain a constant thickness on exit from a consideration of the rate of acceleration of the mill, (b) generating a retroaction electric signal proportional to the rate of change of this variable from a consideration of the variation of the variation of the real exit thickness w.r.t. a constant required exit thickness and (c) controlling the variable in order to maintain a constant exit thickness from a consideration of the direct action signal of the retroaction signal. The variable is the speed of the screw down motor.
BE785304A 1971-06-25 1972-06-23 Constant exit thickness from rolling mill - by controlling a mill variable during roll acceleration BE785304A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15690171A 1971-06-25 1971-06-25

Publications (1)

Publication Number Publication Date
BE785304A true BE785304A (en) 1972-12-27

Family

ID=22561585

Family Applications (1)

Application Number Title Priority Date Filing Date
BE785304A BE785304A (en) 1971-06-25 1972-06-23 Constant exit thickness from rolling mill - by controlling a mill variable during roll acceleration

Country Status (1)

Country Link
BE (1) BE785304A (en)

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