EP0974406A2 - Procédé et dispositif pour corriger le déplacement d'une bande pendant le laminage - Google Patents
Procédé et dispositif pour corriger le déplacement d'une bande pendant le laminage Download PDFInfo
- Publication number
- EP0974406A2 EP0974406A2 EP19990113959 EP99113959A EP0974406A2 EP 0974406 A2 EP0974406 A2 EP 0974406A2 EP 19990113959 EP19990113959 EP 19990113959 EP 99113959 A EP99113959 A EP 99113959A EP 0974406 A2 EP0974406 A2 EP 0974406A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- roll
- tension
- roll gap
- roll stand
- measuring device
- 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.)
- Withdrawn
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 title 1
- 238000009826 distribution Methods 0.000 claims description 20
- 230000008859 change Effects 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
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
- B21B37/68—Camber or steering control for strip, sheets or plates, e.g. preventing meandering
Definitions
- the invention relates to a method and an apparatus for Correct the strip path when rolling strips with at least a rolling stand.
- the present invention is based on this state the technology, the task, a method and a Device for regulating the course of the tape, in particular in rolling stands with low retractions, to create, where to additional regulatory devices, such as adjustable control rollers, should be dispensed with.
- a method is proposed in which on opposite Sides of the outgoing tape for tension meaningful measured variables are measured in the then the difference in a control loop as the actual value the tension values are calculated and that the belt run at Deviation of the actual value from a target value due to a change corrected the roll setting of at least one roll stand becomes.
- Meaningful measured variables for the tensile stress are, for example the force, the tension values in relation to the area results. All other types of measurands can also be used be included with the tension in a fixed arithmetic relationship. That means an indirect Measurement of the tension values takes place.
- setpoint is a symmetrical voltage distribution in the Rolling gap meant that of a difference in the tensile stresses of Corresponds to zero. Other setpoints are also if necessary definable.
- the invention is based on the finding that before a visible lateral run of the band the change the course of the belt due to changing forces or tensions, measured at the exit side of the tape by suitable means can be determined.
- a band regulation takes place according to the invention by the direct coupling of the measured Tension values and the change in Roll gap of the roll stand. This is a band regulation without additional facilities, such as the well-known swiveling one Steering role, possible.
- the tensile stress values on the belt section are preferred detected, which runs over a tension measuring device, which, Seen in the direction of belt conveyance, behind the roll stand and across is arranged to the band.
- the roll gap profile is changed so that the tension distribution in the roll gap again symmetrical to the center line the work rolls is. This causes the tape in the The middle of the roll stand runs and prevents its lateral Get lost.
- the regulation takes place via a change in employment (Swiveling) the rollers of the roll stand and not by means of additional ones Tax roles.
- Sizes can be any type of Act institutions that perform this task.
- a tape tension measuring device is preferably used to measure the tension values proposed that seen in the belt conveying direction arranged behind the roll stand and across the strip is. The values are shown on the drive and Operating side of the tape tension measuring device is detected.
- the measuring devices are load cells.
- the known or calculated area ratios of the belt Conversion into voltage values are load cells.
- drive side in this context is the side of the volume meant that of those equipped with the drives Side of the roll stand is assigned.
- the operating side on the other hand is the freely accessible other side of the roll stand.
- a preferred embodiment consists of a rolling mill with two tandem stands and one between the two stands arranged tape tension measuring device.
- the rolling mill shown in FIG. 1 consists of two roll stands 1 and 1 ', each composed of two work rolls (2a, b and 2a ' and b ' ) and two backup rolls (3a, b and 3a ' and b ' ).
- a strip tension measuring device 4 is arranged between the two roll stands 1, 1 '.
- the strip 5 to be rolled is conveyed via rollers 6a, b through the first roll stand 1 in the direction of the strip travel (arrow direction), in order then to run into the second roll stand 1 'via the strip tension measuring device 4.
- the device according to the invention as a tape run correction system thus consists of means for tension value acquisition, one Control device (not shown and an adjustment system (not shown) for the roll gap of a roll stand 1, which are run in a control loop.
- the roll gap must be on the drive side be made smaller. This is done through change the position of the rollers. This change in the roll gap is effected according to the invention with an automatic control system. It is also possible that the regulation is dependent of the tension values recorded manually can be.
- Figure 3 b shows the other case of increasing tensile stress on the operating side of the belt.
- the difference between The tensions recorded on both sides are compared with the Time getting bigger. This is reflected in the increasing amount for the negative values in Figure 3 b.
- the regulation of The strip runs through a reduction in the roll gap on the operator side.
- This controlled adjustment of the roll gap is a constant one ensures symmetrical stress distribution in the roll gap. This causes the strip to be in the middle of the roll stand runs and prevents lateral running.
- Figure 4 shows the voltage distributions in the Roll gap W in three cases.
- Figure 4 a an asymmetrical voltage distribution.
- the tensile stresses on operating side B are larger than the values on the drive side A.
- the difference between the voltage values on the drive and operating side is negative overall.
- the tape run is regulated by the roll gap profile on the operating side is reduced, i.e. by pivoting the Rolls to the operating side.
- the stress distribution equalized around the center line of the rollers. It a symmetrical stress distribution in the roll gap is achieved.
- Figure 4 b shows a symmetrical voltage distribution in Roll gap. The difference between the voltage values is therefore zero.
- the proposed method and the device are intended especially in hot or cold rolling mills with one or more Scaffolds are used.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833322 | 1998-07-24 | ||
| DE19833322 | 1998-07-24 | ||
| DE19843039A DE19843039A1 (de) | 1998-07-24 | 1998-09-19 | Verfahren und Vorrichtung zum Korrigieren des Bandverlaufs beim Bandwalzen |
| DE19843039 | 1998-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0974406A2 true EP0974406A2 (fr) | 2000-01-26 |
Family
ID=26047665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19990113959 Withdrawn EP0974406A2 (fr) | 1998-07-24 | 1999-07-17 | Procédé et dispositif pour corriger le déplacement d'une bande pendant le laminage |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0974406A2 (fr) |
| JP (1) | JP2000051916A (fr) |
| CA (1) | CA2278929A1 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102652959A (zh) * | 2012-05-04 | 2012-09-05 | 中国重型机械研究院有限公司 | 一种双四辊平整机 |
| CN103203373A (zh) * | 2012-01-12 | 2013-07-17 | 宝山钢铁股份有限公司 | 一种用于冷轧酸洗机组的带材纠偏控制方法 |
| CN110773572A (zh) * | 2018-07-25 | 2020-02-11 | 首要金属科技奥地利有限责任公司 | 用于获取运行中的金属带的侧向的带轮廓或带边缘的位置的方法和装置 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0752285A2 (fr) | 1995-07-07 | 1997-01-08 | Sundwiger Eisenhütte Maschinenfabrik Grah & Co | Procédé et dispositif de laminage de bandes ayant transversalement des irrégularités d'épaisseur et/ou de longeur |
-
1999
- 1999-07-17 EP EP19990113959 patent/EP0974406A2/fr not_active Withdrawn
- 1999-07-23 CA CA 2278929 patent/CA2278929A1/fr not_active Abandoned
- 1999-07-23 JP JP11209612A patent/JP2000051916A/ja not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0752285A2 (fr) | 1995-07-07 | 1997-01-08 | Sundwiger Eisenhütte Maschinenfabrik Grah & Co | Procédé et dispositif de laminage de bandes ayant transversalement des irrégularités d'épaisseur et/ou de longeur |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203373A (zh) * | 2012-01-12 | 2013-07-17 | 宝山钢铁股份有限公司 | 一种用于冷轧酸洗机组的带材纠偏控制方法 |
| CN103203373B (zh) * | 2012-01-12 | 2015-07-22 | 宝山钢铁股份有限公司 | 一种用于冷轧酸洗机组的带材纠偏控制方法 |
| CN102652959A (zh) * | 2012-05-04 | 2012-09-05 | 中国重型机械研究院有限公司 | 一种双四辊平整机 |
| CN110773572A (zh) * | 2018-07-25 | 2020-02-11 | 首要金属科技奥地利有限责任公司 | 用于获取运行中的金属带的侧向的带轮廓或带边缘的位置的方法和装置 |
| CN110773572B (zh) * | 2018-07-25 | 2023-12-01 | 首要金属科技奥地利有限责任公司 | 用于获取运行中的金属带的侧向的带轮廓或带边缘的位置的方法和装置 |
| US11975372B2 (en) | 2018-07-25 | 2024-05-07 | Primetals Technologies Austria GmbH | Method and device for ascertaining the lateral strip contour or the position of the strip edges of a running metal strip |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2278929A1 (fr) | 2000-01-24 |
| JP2000051916A (ja) | 2000-02-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19990717 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SMS DEMAG AG |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn |
Withdrawal date: 20010629 |