JPS5758910A - Controlling method for sheet breadth in continuous hot rolling mill - Google Patents

Controlling method for sheet breadth in continuous hot rolling mill

Info

Publication number
JPS5758910A
JPS5758910A JP55134798A JP13479880A JPS5758910A JP S5758910 A JPS5758910 A JP S5758910A JP 55134798 A JP55134798 A JP 55134798A JP 13479880 A JP13479880 A JP 13479880A JP S5758910 A JPS5758910 A JP S5758910A
Authority
JP
Japan
Prior art keywords
interstand
inputted
breadth
steel sheet
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
JP55134798A
Other languages
Japanese (ja)
Inventor
Takashi Shibahara
Teruo Kono
Ryoichi Takahashi
Michihiro Yamaguchi
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 JP55134798A priority Critical patent/JPS5758910A/en
Publication of JPS5758910A publication Critical patent/JPS5758910A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the control accuracy for the sheet breadth, and to improve the yield of product, by arithmetically predicting the sheet breadth variation on the run-out side on the basis of the temperature distribution of a rolled material and the interstand traveling time, and by controlledly correcting the interstand tension on the upstream side.
CONSTITUTION: The temperature of a steel sheet 1 is measured by a temperature sensor 2 on the feed-in side of a hot finishing mill; the measured value is inputted to an arithmetic device 3 which then arithmetically predicts the temperature variation of the steel sheet 1. The result of this operation is inputted to a computing control device 5. Meanwhile, the rotational speed of each rolling roll to be outputted from pulse generators PG1WPG3 is inputted to an arithmetic device 4 which then operates the time required by the temperature predicted part of the steel sheet 1 in traveling from the 1st stand to the 2nd stand; thus operated time requirement is inputted to the computing control device 5. The unit 5 arithmetically predicts each interstand breadth variation on the basis of this input and each interstand reference tension. On the basis of thus predicted breadth variation, each interstand tension to be given to the steel sheet 1 is operated, and a command signal is given to a driving part of each looper R1WR3.
COPYRIGHT: (C)1982,JPO&Japio
JP55134798A 1980-09-26 1980-09-26 Controlling method for sheet breadth in continuous hot rolling mill Pending JPS5758910A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55134798A JPS5758910A (en) 1980-09-26 1980-09-26 Controlling method for sheet breadth in continuous hot rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55134798A JPS5758910A (en) 1980-09-26 1980-09-26 Controlling method for sheet breadth in continuous hot rolling mill

Publications (1)

Publication Number Publication Date
JPS5758910A true JPS5758910A (en) 1982-04-09

Family

ID=15136773

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55134798A Pending JPS5758910A (en) 1980-09-26 1980-09-26 Controlling method for sheet breadth in continuous hot rolling mill

Country Status (1)

Country Link
JP (1) JPS5758910A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6152917A (en) * 1984-08-23 1986-03-15 Kawasaki Steel Corp Plate width controlling device of tandem rolling mill
JPS61232012A (en) * 1985-04-08 1986-10-16 Kawasaki Steel Corp Rolling method for controlling width of hot strip
JPS6376709A (en) * 1986-09-17 1988-04-07 Kawasaki Steel Corp Width control method for tandem rolling mill

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6152917A (en) * 1984-08-23 1986-03-15 Kawasaki Steel Corp Plate width controlling device of tandem rolling mill
JPH0324283B2 (en) * 1984-08-23 1991-04-02 Kawasaki Seitetsu Kk
JPS61232012A (en) * 1985-04-08 1986-10-16 Kawasaki Steel Corp Rolling method for controlling width of hot strip
JPS6376709A (en) * 1986-09-17 1988-04-07 Kawasaki Steel Corp Width control method for tandem rolling mill

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