JPS5650709A - Preventing method for fluctuation of finished breadth in hot strip mill - Google Patents

Preventing method for fluctuation of finished breadth in hot strip mill

Info

Publication number
JPS5650709A
JPS5650709A JP12584579A JP12584579A JPS5650709A JP S5650709 A JPS5650709 A JP S5650709A JP 12584579 A JP12584579 A JP 12584579A JP 12584579 A JP12584579 A JP 12584579A JP S5650709 A JPS5650709 A JP S5650709A
Authority
JP
Japan
Prior art keywords
strip
looper
fluctuation
breadth
finished
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
JP12584579A
Other languages
Japanese (ja)
Inventor
Teruo Hiramatsu
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 JP12584579A priority Critical patent/JPS5650709A/en
Publication of JPS5650709A publication Critical patent/JPS5650709A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
    • B21B41/08—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters without overall change in the general direction of movement of the work
    • B21B41/10—Loop deflectors

Landscapes

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

Abstract

PURPOSE:To prevent the fluctuation of breadth due to the anomalous tension caused when the looper is rising up, by arranging the looper roll so as to lightly touch the strip and to gradually increase the contact strength until the prescribed tension is given to the strip. CONSTITUTION:In order to give the prescribed tension required by the constant tension control for the strip 2, the oil pressure at the set level is supplied to the cylinder 5; hereby, the looper shaft 7 turns around and the holding arm 8 lifts up the looper roll 4 so as to touch the strip 2. The spring 10 of the buffer mechanism 9 is compressed so as to make the initial contact lightly and is more strongly compressed with further turning of the holding arm 8; at last, the oil pressure of the cylinder 5 at the full of the set level without being buffered, is transmitted to the strip 2; hereby, the constant tension control is performed.
JP12584579A 1979-09-29 1979-09-29 Preventing method for fluctuation of finished breadth in hot strip mill Pending JPS5650709A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12584579A JPS5650709A (en) 1979-09-29 1979-09-29 Preventing method for fluctuation of finished breadth in hot strip mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12584579A JPS5650709A (en) 1979-09-29 1979-09-29 Preventing method for fluctuation of finished breadth in hot strip mill

Publications (1)

Publication Number Publication Date
JPS5650709A true JPS5650709A (en) 1981-05-08

Family

ID=14920359

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12584579A Pending JPS5650709A (en) 1979-09-29 1979-09-29 Preventing method for fluctuation of finished breadth in hot strip mill

Country Status (1)

Country Link
JP (1) JPS5650709A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5771724A (en) * 1995-03-30 1998-06-30 Sms Schloemann-Siemag Aktiengesellschaft Method and apparatus for an anticipatory thickness control in foil rolling
KR100775321B1 (en) * 2001-11-19 2007-11-08 주식회사 포스코 Automatic center adjustment type apparatus for preventing the buckle of steel sheet
KR100860314B1 (en) * 2002-07-25 2008-09-26 주식회사 포스코 Pusher arm apparatus by using workpiece mass and acceleation principle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5771724A (en) * 1995-03-30 1998-06-30 Sms Schloemann-Siemag Aktiengesellschaft Method and apparatus for an anticipatory thickness control in foil rolling
KR100775321B1 (en) * 2001-11-19 2007-11-08 주식회사 포스코 Automatic center adjustment type apparatus for preventing the buckle of steel sheet
KR100860314B1 (en) * 2002-07-25 2008-09-26 주식회사 포스코 Pusher arm apparatus by using workpiece mass and acceleation principle

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