JPS5758910A - Controlling method for sheet breadth in continuous hot rolling mill - Google Patents
Controlling method for sheet breadth in continuous hot rolling millInfo
- 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
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
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)
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 |
-
1980
- 1980-09-26 JP JP55134798A patent/JPS5758910A/en active Pending
Cited By (4)
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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