JPS5732816A - Controlling method for screw down device of vertical rolling mill - Google Patents
Controlling method for screw down device of vertical rolling millInfo
- Publication number
- JPS5732816A JPS5732816A JP10817180A JP10817180A JPS5732816A JP S5732816 A JPS5732816 A JP S5732816A JP 10817180 A JP10817180 A JP 10817180A JP 10817180 A JP10817180 A JP 10817180A JP S5732816 A JPS5732816 A JP S5732816A
- Authority
- JP
- Japan
- Prior art keywords
- screw down
- lower screw
- down devices
- deflection
- hydraulic cylinder
- 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
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
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
Abstract
PURPOSE:To improve accuracy of plate width by giving the difference of deflection due to the difference of load applied to upper and lower screw down devices and the difference of mill rigidity to the setting value of a controlling system and thereby keeping the vertical roll perpendicular to the rolled stock. CONSTITUTION:Before passing a plate, the amount of deflection of rolling mill at upper and lower screw down devices is determined from rolling reduction and the load applied to the upper and lower screw down devices and mill rigidity. Next, piston displacement of a hydraulic cylinder 3 is determined from the gap of a vertical roll 2 which is determined by rolling reduction. The setting value of controlling system of upper and lower screw down devices is set so that the roll gap is narrowed by the amount of deflection of each of upper and lower screw down devices. Accordingly, the piston displacement of the hydraulic cylinder follows the setting value, and therefore, the amount of deflection due to the load applied to upper and lower screw down devices is compensated by movement of the piston of hydraulic cylinder, and the vertical roll 2 is controlled perpendicularly to the direction of plate width of the rolled stock 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10817180A JPS5732816A (en) | 1980-08-08 | 1980-08-08 | Controlling method for screw down device of vertical rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10817180A JPS5732816A (en) | 1980-08-08 | 1980-08-08 | Controlling method for screw down device of vertical rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5732816A true JPS5732816A (en) | 1982-02-22 |
Family
ID=14477780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10817180A Pending JPS5732816A (en) | 1980-08-08 | 1980-08-08 | Controlling method for screw down device of vertical rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5732816A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4502311A (en) * | 1982-12-08 | 1985-03-05 | White Consolidated Industries, Inc. | Apparatus and method for press-edging hot slabs |
| CN106238467A (en) * | 2016-07-26 | 2016-12-21 | 天津天重中直科技工程有限公司 | A kind of unilateral Medium-voltage Motor vertical miller |
-
1980
- 1980-08-08 JP JP10817180A patent/JPS5732816A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4502311A (en) * | 1982-12-08 | 1985-03-05 | White Consolidated Industries, Inc. | Apparatus and method for press-edging hot slabs |
| CN106238467A (en) * | 2016-07-26 | 2016-12-21 | 天津天重中直科技工程有限公司 | A kind of unilateral Medium-voltage Motor vertical miller |
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