JPS5479145A - Method and apparatus for controlling breadth of sheet - Google Patents

Method and apparatus for controlling breadth of sheet

Info

Publication number
JPS5479145A
JPS5479145A JP14694277A JP14694277A JPS5479145A JP S5479145 A JPS5479145 A JP S5479145A JP 14694277 A JP14694277 A JP 14694277A JP 14694277 A JP14694277 A JP 14694277A JP S5479145 A JPS5479145 A JP S5479145A
Authority
JP
Japan
Prior art keywords
sheet
tension
fluctuation
rolled material
temperature
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP14694277A
Other languages
Japanese (ja)
Inventor
Isao Imai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Corp
Original Assignee
IHI 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 IHI Corp filed Critical IHI Corp
Priority to JP14694277A priority Critical patent/JPS5479145A/en
Publication of JPS5479145A publication Critical patent/JPS5479145A/en
Pending legal-status Critical Current

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
    • B21B37/22—Lateral spread control; Width control, e.g. by edge rolling

Landscapes

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

Abstract

PURPOSE:To reduce the fluctuation of breadth of sheet in the hot continuous rolling work, by obtaining the variation of the yield stress of the rolled material from the temperature fluctuation in the rolled material and the fluctuation of rolling speed, and by correcting the tension so as to make constant the ratio of this variation to the tension of the rolled material. CONSTITUTION:The sheet-temperature-meter 10 is installed between the first and the second stands, and the sheet-speed-meter 11 is installed in the first stand. The signals from the sheet-temperature-meter 10 and the sheet-speed-meter 11, and the signal for the settled tension value, are inputted to the tension-arithmetic-unit 12 on purpose to perform an operation for comparison, and to calculate the yield stress of the rolled material suitable for the temperature fluctuation and the speed fluctuation. The corrected tension value is supplied to the looper controller 13 so as to hold constant the ratio of the tension to the yield stress of the sheet; the tension of the sheet is changed by controlling the looper driver 14; hereby, the fluctuation of breadth of sheet is held constant. According to this method, the optimum tension is given to the rolled material correspondingly to the temperature of rolled material and rolling speed, and the fluctuation of breadth of sheet can be made minimum.
JP14694277A 1977-12-06 1977-12-06 Method and apparatus for controlling breadth of sheet Pending JPS5479145A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14694277A JPS5479145A (en) 1977-12-06 1977-12-06 Method and apparatus for controlling breadth of sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14694277A JPS5479145A (en) 1977-12-06 1977-12-06 Method and apparatus for controlling breadth of sheet

Publications (1)

Publication Number Publication Date
JPS5479145A true JPS5479145A (en) 1979-06-23

Family

ID=15419050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14694277A Pending JPS5479145A (en) 1977-12-06 1977-12-06 Method and apparatus for controlling breadth of sheet

Country Status (1)

Country Link
JP (1) JPS5479145A (en)

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