JPS56117811A - Controlling method for rolling work changeable thickness of traveling sheet - Google Patents
Controlling method for rolling work changeable thickness of traveling sheetInfo
- Publication number
- JPS56117811A JPS56117811A JP1939080A JP1939080A JPS56117811A JP S56117811 A JPS56117811 A JP S56117811A JP 1939080 A JP1939080 A JP 1939080A JP 1939080 A JP1939080 A JP 1939080A JP S56117811 A JPS56117811 A JP S56117811A
- Authority
- JP
- Japan
- Prior art keywords
- thickness
- stand
- screw position
- response
- changed
- 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
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
- B21B37/24—Automatic variation of thickness according to a predetermined programme
- B21B37/26—Automatic variation of thickness according to a predetermined programme for obtaining one strip having successive lengths of different constant thickness
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
PURPOSE:To change the pass schedule without disturbing the balance of mass flow, by matching the response to the screw position to the response to the rolling speed in each stand when the pass schedule is changed. CONSTITUTION:The thickness is changed since the moment that the thickness changing point of a single blank material being rolled by a rolling mill equipped with plural stands (b) arrives at a specified stand. Hereupon, if the response speed of the screw position controller of the stand is different from the response speed of the screw position controller of other stands, the roll gap correction signal for each screw down device is generated as a ramp signal so as to enable each screw position controller to trail the signal and to make each stand finish the thickness change at the same time. By the present method, the draft percentage is changed linearly and moderately from the value before the thickness change to the value after the thickness change.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1939080A JPS56117811A (en) | 1980-02-19 | 1980-02-19 | Controlling method for rolling work changeable thickness of traveling sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1939080A JPS56117811A (en) | 1980-02-19 | 1980-02-19 | Controlling method for rolling work changeable thickness of traveling sheet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56117811A true JPS56117811A (en) | 1981-09-16 |
JPS6339321B2 JPS6339321B2 (en) | 1988-08-04 |
Family
ID=11997949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1939080A Granted JPS56117811A (en) | 1980-02-19 | 1980-02-19 | Controlling method for rolling work changeable thickness of traveling sheet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56117811A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011206780A (en) * | 2010-03-29 | 2011-10-20 | Sumitomo Metal Ind Ltd | Tandem finishing mill, method for controlling operation of the same, and apparatus and method for manufacturing hot-rolled steel sheet |
JP2012506777A (en) * | 2008-10-30 | 2012-03-22 | シーメンス アクチエンゲゼルシヤフト | Method, control and / or adjustment device, storage medium, program code and rolling equipment for adjusting the drive load of a number of drive devices of a rolling line for rolling the material to be rolled |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49131937A (en) * | 1973-04-25 | 1974-12-18 | ||
JPS53149157A (en) * | 1977-06-01 | 1978-12-26 | Hitachi Ltd | Screw down method for hot finishing rolling |
-
1980
- 1980-02-19 JP JP1939080A patent/JPS56117811A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49131937A (en) * | 1973-04-25 | 1974-12-18 | ||
JPS53149157A (en) * | 1977-06-01 | 1978-12-26 | Hitachi Ltd | Screw down method for hot finishing rolling |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012506777A (en) * | 2008-10-30 | 2012-03-22 | シーメンス アクチエンゲゼルシヤフト | Method, control and / or adjustment device, storage medium, program code and rolling equipment for adjusting the drive load of a number of drive devices of a rolling line for rolling the material to be rolled |
US9138789B2 (en) | 2008-10-30 | 2015-09-22 | Siemens Aktiengesellschaft | Method for adjusting a drive load for a plurality of drives of a mill train for rolling rolling stock, control and/or regulation device, storage medium, program code and rolling mill |
EP2340133B2 (en) † | 2008-10-30 | 2023-07-19 | Primetals Technologies Germany GmbH | Method for setting a drive load for multiple drives on a mill train to mill milled items, control and/or regulating device, storage medium, program code and mill train |
JP2011206780A (en) * | 2010-03-29 | 2011-10-20 | Sumitomo Metal Ind Ltd | Tandem finishing mill, method for controlling operation of the same, and apparatus and method for manufacturing hot-rolled steel sheet |
Also Published As
Publication number | Publication date |
---|---|
JPS6339321B2 (en) | 1988-08-04 |
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