JPS5592215A - Crown control hot rolling method of hot strip - Google Patents
Crown control hot rolling method of hot stripInfo
- Publication number
- JPS5592215A JPS5592215A JP16219578A JP16219578A JPS5592215A JP S5592215 A JPS5592215 A JP S5592215A JP 16219578 A JP16219578 A JP 16219578A JP 16219578 A JP16219578 A JP 16219578A JP S5592215 A JPS5592215 A JP S5592215A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- calculated
- rolling
- stand
- plate crown
- 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 enhance dimensional accuracy and improve the yield of product and rolling efficiency by changing the screw-down distribution of each stand of the later-stage 3 stands excluding the final stand along with progression of rolling thereby controlling plate crown and simultaneously performing controlling of the plate crown and shape in the final stand.
CONSTITUTION: The screw-down distribution modes of all stands are determined based on the target plate crown Cset by a main computer 1 and the screw-down position of every stand is outputted to screw-down devices 4 and the numbers of roll revolutions are outputted to drive motors 5, whereby set-up is accomplished. Next, the rolling material 2 is rolled and the profile after the rolling is measured with a profile meter 11. In a comparing arithmetic device 12, the difference ΔCst between the calculated and actual crowns Cst and Cset of the plate crown is calculated and further whether rough or fine adjustment is needed or not is deviced. In the case of rough adjustment, roll wear and thermal crown are calculated and the total draft of the rear-stage 3 stands is calculated by the main computer 1, thence the entire stand screw-down distribution is re-calculated and is outputted to the screw-down devices 4 and motor 5. In the case of fine adjustment, the optimum FDT is determined by the computer 1 based on the rolling material temperatures in the finishing inlet and outlet side thermometers 9 and 10.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53162195A JPS5941805B2 (en) | 1978-12-29 | 1978-12-29 | Crown control hot rolling method for hot strips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53162195A JPS5941805B2 (en) | 1978-12-29 | 1978-12-29 | Crown control hot rolling method for hot strips |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5592215A true JPS5592215A (en) | 1980-07-12 |
| JPS5941805B2 JPS5941805B2 (en) | 1984-10-09 |
Family
ID=15749796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53162195A Expired JPS5941805B2 (en) | 1978-12-29 | 1978-12-29 | Crown control hot rolling method for hot strips |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5941805B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59130614A (en) * | 1982-10-20 | 1984-07-27 | Nippon Steel Corp | Control method of rolling |
| JPS61269923A (en) * | 1985-05-23 | 1986-11-29 | Kawasaki Steel Corp | Method for controlling sheet thickness with rolling mill |
-
1978
- 1978-12-29 JP JP53162195A patent/JPS5941805B2/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59130614A (en) * | 1982-10-20 | 1984-07-27 | Nippon Steel Corp | Control method of rolling |
| JPH0372364B2 (en) * | 1982-10-20 | 1991-11-18 | Nippon Steel Corp | |
| JPS61269923A (en) * | 1985-05-23 | 1986-11-29 | Kawasaki Steel Corp | Method for controlling sheet thickness with rolling mill |
| JPH0685930B2 (en) * | 1985-05-23 | 1994-11-02 | 川崎製鉄株式会社 | Plate thickness control method in rolling mill |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5941805B2 (en) | 1984-10-09 |
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