JPS57139415A - Controlling method for sheet breadth of continuous hot rolling mill - Google Patents

Controlling method for sheet breadth of continuous hot rolling mill

Info

Publication number
JPS57139415A
JPS57139415A JP56024644A JP2464481A JPS57139415A JP S57139415 A JPS57139415 A JP S57139415A JP 56024644 A JP56024644 A JP 56024644A JP 2464481 A JP2464481 A JP 2464481A JP S57139415 A JPS57139415 A JP S57139415A
Authority
JP
Japan
Prior art keywords
sheet
breadth
tension
deviation
stands
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
JP56024644A
Other languages
Japanese (ja)
Inventor
Ryoichi Takahashi
Michihiro Yamaguchi
Teruo Kono
Takashi Shibahara
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP56024644A priority Critical patent/JPS57139415A/en
Publication of JPS57139415A publication Critical patent/JPS57139415A/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
    • B21B37/48—Tension control; Compression control
    • B21B37/50—Tension control; Compression control by looper control

Landscapes

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

Abstract

PURPOSE:To eliminate a thickness deviation generating in both groups of roughing and finishing mills at a stroke, by correcting the sheet tension between stands on the down-stream side based on the sheet breadth deviation at the output side of a finishing mill, of which sheet breadth on the up-stream side is controlled by the sheet breadth deviation and a temp. distribution in the longitudinal direction of a rolling material. CONSTITUTION:Steel sheet 1 is passed in the direction of the arrow between stands S1-S7 of a finishing mill under a standard tension caused by loopers R1-R7. A tension of the sheet 1 between the stands on the up-stream side is correctingly controlled by using a breadth meter 6, a temp. sensor 2, pulse generators PG1-PG3, arithmetic units 3 and 4, and arithmetic controllers 5. Here, the sheet breadth is measured by the breadth meter 7 at the exit side, and the result is compared with an output of a product-breadth setter 10 to integrate the deviation between them by an integrator 8. Tensions to be added to the sheet 1 between stand S4 and S5-S6 and betweem S5-S6 and S7 are computed from said integrated values to output a command signal, corresponding to each computed value, to each looper R4-R6 to add a tension to the sheet 1.
JP56024644A 1981-02-20 1981-02-20 Controlling method for sheet breadth of continuous hot rolling mill Pending JPS57139415A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56024644A JPS57139415A (en) 1981-02-20 1981-02-20 Controlling method for sheet breadth of continuous hot rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56024644A JPS57139415A (en) 1981-02-20 1981-02-20 Controlling method for sheet breadth of continuous hot rolling mill

Publications (1)

Publication Number Publication Date
JPS57139415A true JPS57139415A (en) 1982-08-28

Family

ID=12143842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56024644A Pending JPS57139415A (en) 1981-02-20 1981-02-20 Controlling method for sheet breadth of continuous hot rolling mill

Country Status (1)

Country Link
JP (1) JPS57139415A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6025816A (en) * 1983-07-21 1985-02-08 Matsushita Electric Ind Co Ltd Air conditioner for vehicle
JPS62289307A (en) * 1986-06-06 1987-12-16 Kawasaki Steel Corp Sheet width controlling method in rolling mill
EP0998990A2 (en) * 1998-11-05 2000-05-10 Siemens Aktiengesellschaft Method and device for controlling the width of a metal strip

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6025816A (en) * 1983-07-21 1985-02-08 Matsushita Electric Ind Co Ltd Air conditioner for vehicle
JPH0137285B2 (en) * 1983-07-21 1989-08-07 Matsushita Electric Ind Co Ltd
JPS62289307A (en) * 1986-06-06 1987-12-16 Kawasaki Steel Corp Sheet width controlling method in rolling mill
JPH048123B2 (en) * 1986-06-06 1992-02-14 Kawasaki Steel Co
EP0998990A2 (en) * 1998-11-05 2000-05-10 Siemens Aktiengesellschaft Method and device for controlling the width of a metal strip
EP0998990A3 (en) * 1998-11-05 2002-12-18 Siemens Aktiengesellschaft Method and device for controlling the width of a metal strip

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