JPS56119614A - Method for forecasting rolling load of steel sheet - Google Patents
Method for forecasting rolling load of steel sheetInfo
- Publication number
- JPS56119614A JPS56119614A JP2299080A JP2299080A JPS56119614A JP S56119614 A JPS56119614 A JP S56119614A JP 2299080 A JP2299080 A JP 2299080A JP 2299080 A JP2299080 A JP 2299080A JP S56119614 A JPS56119614 A JP S56119614A
- Authority
- JP
- Japan
- Prior art keywords
- formula
- deformation
- rolling
- strain
- steel sheet
- 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.)
- Granted
Links
Landscapes
- Control Of Metal Rolling (AREA)
Abstract
PURPOSE: To forecast the rolling load in high accuracy, by formulating the strain recovery process with modeled numerical formulas in exercising computer control of the rolling mill.
CONSTITUTION: The accumultaed strain Δε just before each pass is obtained from the actually measured value of rolling load according to the formula I. In the formula, ε is the logarithmic strain, Kmobs and Kmo are respectively the actually measured deformation-resistance and the standard average deformation-resistance, and a3 is a constant. Since the values of ε, Kmobs and Kmo can be computed just after causing the deformation, Δε can be found during the rolling work. The strain recovery process at high temperatures is expressed by the formula II. In the formula, (b), a1Wa3 and N0 are constants, (t) is the time after the deformation, and Tk is the average temperature of the steel sheet. In the rolling work of an ordinary steel sheet or the hot strip rolling work, N0=2 is satisfactorily used and the residual strain percentage λ is expressed by the formula III. In the formula, d0Wd2 are constants. Then, the average deformation-resistance kmcal for the next pass is forecasted by using the formulas I, III, and the rolling load Pcal for the next pass is forecasted by using the formula IV. In the formula, W is the sheet breadth, Qp is the draft percentage function, ld is the projected length of the contact arc.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2299080A JPS56119614A (en) | 1980-02-26 | 1980-02-26 | Method for forecasting rolling load of steel sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2299080A JPS56119614A (en) | 1980-02-26 | 1980-02-26 | Method for forecasting rolling load of steel sheet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56119614A true JPS56119614A (en) | 1981-09-19 |
JPH0131964B2 JPH0131964B2 (en) | 1989-06-28 |
Family
ID=12097969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2299080A Granted JPS56119614A (en) | 1980-02-26 | 1980-02-26 | Method for forecasting rolling load of steel sheet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56119614A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2783444A1 (en) * | 1998-09-21 | 2000-03-24 | Kvaerner Metals Clecim | LAMINATION PROCESS OF A METAL PRODUCT |
-
1980
- 1980-02-26 JP JP2299080A patent/JPS56119614A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2783444A1 (en) * | 1998-09-21 | 2000-03-24 | Kvaerner Metals Clecim | LAMINATION PROCESS OF A METAL PRODUCT |
EP0988903A1 (en) * | 1998-09-21 | 2000-03-29 | Kvaerner Metals Clecim | Method of rolling a metal product |
US6526328B1 (en) | 1998-09-21 | 2003-02-25 | Vai Clecim | Process for rolling a metal product |
Also Published As
Publication number | Publication date |
---|---|
JPH0131964B2 (en) | 1989-06-28 |
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