EP0988904A2 - Procédé et appareil pour mesurer la planéité de bandes - Google Patents
Procédé et appareil pour mesurer la planéité de bandes Download PDFInfo
- Publication number
- EP0988904A2 EP0988904A2 EP99116003A EP99116003A EP0988904A2 EP 0988904 A2 EP0988904 A2 EP 0988904A2 EP 99116003 A EP99116003 A EP 99116003A EP 99116003 A EP99116003 A EP 99116003A EP 0988904 A2 EP0988904 A2 EP 0988904A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- measuring
- strip
- braking force
- flatness
- belt
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
Definitions
- the invention relates to a method for flatness measurement of strips, in particular metal strips, as they pass through of strip processing plants, rolling mills, for example or the like, after which the continuous belt with a predetermined strip tension is applied, and then by means of at least one in a measuring range in a predetermined Distance from the belt surface arranged measuring device Belt unevenness can be detected.
- Such a method is the subject of, for example DE-PS 28 13 719. Is also comparable in DE-OS 42 24th 569 procedures.
- Both previously known teachings have in common that an indirect measurement of the flatness of the strip Measurement of the band tension distribution over the bandwidth with Flatness measuring rollers are used.
- the band tension distribution allows conclusions to be drawn about the flatness of the band.
- a Deflection of the continuous band in the measuring direction with With the help of a power transmission device.
- the Deflection measured and from this deduced the band flatness.
- the aforementioned measuring methods work as it were indirectly because of different deflections of the band Differences in length of individual longitudinal fibers correspond, from which inferred the flatness of the volume becomes.
- flatness measuring rollers only have a limited accuracy exhibit.
- the longitudinal tension of the strip can be adjusted only with an accuracy of approx. 2 to 5 Determine MPa, which leads to corresponding uncertainties in the Accuracy of the flatness measurement leads. Otherwise find Cross tensions in the band no precipitation, which also affect the flatness. It must also be taken into account that even with a flat band influences from neighboring ones Deflection rollers, drive rollers or from the winding process influence the longitudinal stress distribution over the bandwidth.
- the invention is based on the technical problem Method for measuring flatness of strips of the type described at the beginning Training to develop so that without Production loss - as it were online - a reliable one and exact flatness measurement can be achieved. Moreover a corresponding device is to be created.
- the invention proposes generic method that the tape tensile force in and / or immediately before the measuring range by a predetermined one Measure and consequently is specifically reduced to tape-related Flatness measurement errors (mostly) to be able to exclude.
- the continuous belt usually before and / or in the measuring range in comparison directed essentially opposite to the belt tensile force Braking force applied, the braking force in terms of amount almost corresponds to the belt tension.
- - At a Belt treatment plant is within the scope of the invention around every conceivable device that is used for transport, for treatment, coating, etc. of a continuous Band is suitable.
- the one required to transport the tape Tension or the associated belt tension becomes regular of train drivers or a set of traction rollers and one Brake roller set applied. Is under the belt surface in the present case the band top surface and / or the band bottom surface - in contrast to the strip cross-sectional area - to understand.
- the continuous belt is preferably at least one before, after and / or in the measuring range and possibly at least a further deflection roller arranged after the measuring range led, the upstream of the measuring range Deflection roller can be designed as a tension measuring roller and for Determination of the tape tension in the measuring range is used. It leaves the tape tensile force in the measuring range is more preferred Regulate embodiment of the invention.
- the input variable from the tension measuring roller determined tape tensile force used in the measuring range corresponding control signals to a Brake power device are transmitted.
- a control system is required for this purpose Signals ensures and the evaluation of the tension measuring roller recorded measured values.
- any other measuring device on the input side of the measuring range or within can come as long as this measuring device to determine the tape tension or the tape tension is suitable.
- this measuring device to determine the tape tension or the tape tension is suitable.
- the belt tension or the associated belt tension can easily build the braking force accordingly or adjust. This is done in such a way that the braking force amounts almost equal to the belt tension, see above that the continuous belt is almost draft-free in the measuring range.
- braking forces are used here, which are in correspond to about 98, 99% of the belt tension.
- a particularly preferred embodiment of the invention with independent meaning is characterized in that the Brake force device the continuous band with the Belt tension force opposing braking force without contact acted upon.
- the braking force device over Frictional forces the corresponding braking force in the continuous Enter tape like this z. B. by means of a S-roll set succeeds.
- the contactless application of braking force is generally by means of at least one linear motor made, such as in the German Patent application 197 19 994.1-32 is described which is expressly referred to. If additional the measuring device still detects tape unevenness, maximum overall protection of the belt is achieved. The risk of belt surface damage is excluded.
- the measuring device works in the vertical direction compared to the continuous belt, namely across its entire range.
- the can of the Measuring device determined flatness values as input variables (Actual values) fed into a flatness control system be, connected actuators for control according to the flatness (after a target / actual value comparison) to be influenced. That said, it can basically proceed as described in the above DE-OS 42 24 569 is described.
- the invention also relates to a device for Flatness measurement of strips, especially metal strips, with at least one device for loading the continuous belt with a predetermined belt tension and with at least one in a measuring range in a predetermined Distance from the belt surface arranged measuring device for the detection of band flatness, which is characterized by a special functional and simple design.
- This device is characterized in that before that and / or in the measuring range a braking force device for targeted reduction in belt tension and application a braking force is arranged.
- the braking device can work as at least a non-contact Be linear motor. But there is also the possibility that the braking force device from S-roller sets as well as pressure and drive rollers.
- Such a device for Flatness measurement can also be used in rolling mills like with straightening systems or winding processes.
- a device for measuring flatness of strips 1, according to the exemplary embodiment metal strips 1, is shown in the figures.
- the continuous belt 1 is subjected to a predetermined belt tensile force F Z , which is applied via a pull roller set 2 and a brake roller set 3.
- the arrangement may be made in principle as it is shown in DE-OS 39 12 676 or DE-OS 26 25 414 (see FIG. 2).
- the required belt tensile force F Z is generated in a contactless manner by means of a linear motor 4 or more or a series of linear motors.
- this linear motor 4 has a stator or inductor 5 and an armature 1.
- This armature 1 is the metal strip 1.
- the metal strip 1 moves over the linear motor 4, which can generate tension and / or pressure in the metal strip 1.
- the stator 5 has coils arranged next to one another in slots between transverse teeth.
- This measuring range M is designed as a vertical measuring section, with its Length essentially corresponds to the maximum bandwidth.
- the measuring device 6 is at a predetermined distance A from the Belt surface arranged and detected belt unevenness.
- the strip tensile force F Z is deliberately reduced in order to be able to rule out strip tension-related errors in the flatness measurement.
- a braking force B which is opposite to the strip tensile force F Z.
- This braking force B is applied by a braking force device 7.
- This braking force device 7, according to the exemplary embodiment in FIG. 1, is a linear motor 7, while in the exemplary embodiment according to FIG. 2, two S-roller sets 7a, 7b are provided.
- the braking force device 7 is arranged within the measuring range M, while, as shown in FIG. 2, an arrangement in front of it (and behind it) is tracked. Mixed forms are of course also conceivable.
- the linear motor 7 operates contactlessly and generates the braking force B at this point in such a way that the metal strip 1 is acted upon by a continuous field which is directed in the opposite direction to the linear motor 4.
- the belt tensile force F Z and braking force B are directed in opposite directions, as the associated force vectors make clear in the figures.
- angular positions are also within the scope of the invention, in which case the actually acting braking force B is measured on the basis of the horizontal component B H lying in the direction of the strip tension or the direction of the force of the strip, as is indicated in FIG. 1.
- B V here designates the corresponding vertical component of the braking force B.
- the above illustration also makes it clear that the braking force B (or B H ) and the belt tensile force F Z are of almost equal magnitude.
- the continuous strip or metal strip 1 is guided over at least one deflection roller 8 arranged in front of or in the measuring area M.
- a further deflection roller 9 arranged after the measuring range M can be provided. This also applies to the deflection roller 10 which is also realized within the measuring range.
- the deflection roller 8 upstream of the measuring range M is designed as a tension measuring roller 8 and is used to determine the tape tensile force F Z within the measuring range M.
- a control system 11 is also provided, to which the tension measuring roller 8 upstream of the measuring range M is connected.
- the aforementioned tension measuring roller 8 supplies actual values of the tape tension F Z to the aforementioned control system 11, which influences the braking force device 7 accordingly in order to control the braking force B and to set the desired tape tension F Z in the measuring range M.
- the braking force device 7 is connected to the control system 11 and derived default values are applied to it.
- control system 11 controls the electrical power supplied to the respectively associated stator 5 of the linear motor 7 and thus the braking force B.
- the direction of the current flow can also generally be influenced in this way, although in the present case it is always chosen such that the braking force B is directed counter to the belt tensile force F Z.
- the measuring device 6 is as shown Representation around a CCD camera. Of course it is on a laser-optical distance meter is also conceivable at this point. In the same way, inductive or capacitive Sensors are used. Moiré processes can also be used for flatness measurement.
- the measuring device 6 in the vertical direction V compared to continuous band 1 with a predetermined distance A above arranged the band surface and works according to the embodiment contactless.
- flatness measuring rollers conceivable, although not preferred.
- the braking force B is applied via local S-roller sets 7a, 7b with associated pressure rollers 12.
- These S-roller sets 7a, 7b can in principle be driven at different speeds, so that the desired reduction in the belt tensile force F Z or the application of the braking force B can be represented without problems. This is usually done via the respective S-roller sets 7a, 7b associated gearboxes with speed control, which are not shown in detail.
- the appropriate curvature of the roll cover as a function of the measurement device 6 measured values are carried out. That is, as part of the The invention is based on the exemplary embodiment in FIG. 2 an additional control device or flatness control system 14 provided, which the bulging the S-roll 13 in the S-roll set 7b, and depending on the determined by the measuring device 6 Flatness measurements.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Control Of Metal Rolling (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843899A DE19843899C1 (de) | 1998-09-24 | 1998-09-24 | Verfahren und Vorrichtung zur Planheitsmessung von Bändern |
| DE19843899 | 1998-09-24 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0988904A2 true EP0988904A2 (fr) | 2000-03-29 |
| EP0988904A3 EP0988904A3 (fr) | 2003-01-22 |
| EP0988904B1 EP0988904B1 (fr) | 2004-02-25 |
Family
ID=7882157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99116003A Expired - Lifetime EP0988904B1 (fr) | 1998-09-24 | 1999-08-14 | Procédé et appareil pour mesurer la planéité de bandes |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6164104A (fr) |
| EP (1) | EP0988904B1 (fr) |
| AT (1) | ATE260151T1 (fr) |
| CA (1) | CA2283192C (fr) |
| DE (2) | DE19843899C1 (fr) |
| ES (1) | ES2212429T3 (fr) |
| ZA (1) | ZA995849B (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111085549A (zh) * | 2019-12-27 | 2020-05-01 | 山东钢铁集团日照有限公司 | 一种自动分段卸张在线检查带钢板形的方法 |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU757340B2 (en) | 1999-04-02 | 2003-02-20 | Hunter Douglas Industries Bv | Method and arrangement for automatic bow adjustment |
| ATE270424T1 (de) * | 1999-05-28 | 2004-07-15 | Ims Messsysteme Gmbh | Verfahren zur bestimmung der planheit eines materialbandes |
| DE10224938B4 (de) * | 2002-06-04 | 2010-06-17 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Verfahren und Vorrichtung zur Planheitsmessung von Bändern |
| US20070006644A1 (en) * | 2005-07-06 | 2007-01-11 | Alcoa Inc. | Continuous web stress distribution measurement sensor |
| DE102015223600A1 (de) | 2015-09-03 | 2017-03-09 | Sms Group Gmbh | Verfahren zum Herstellen eines metallischen Bandes durch Endloswalzen |
| EP3138639B1 (fr) | 2015-09-03 | 2021-03-24 | SMS group GmbH | Procede de production d'une bande metallique par laminage en continu |
| EP3168570A1 (fr) * | 2015-11-10 | 2017-05-17 | Primetals Technologies France SAS | Méthode de mesure de planéité d'un produit métallique et dispositif associé |
| CN114659435B (zh) * | 2022-03-18 | 2022-11-01 | 广东嘉元科技股份有限公司 | 基于耳料的电解铜箔翘曲测试机具及测试方法 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2625414C2 (de) * | 1976-06-05 | 1985-10-10 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh, 4100 Duisburg | Spannvorrichtung für kontinuierlich durchlaufende Bänder, insbesondere Metallbänder |
| JPS588458B2 (ja) * | 1977-03-30 | 1983-02-16 | 株式会社日立製作所 | 形状検出装置 |
| DE3430034A1 (de) * | 1984-08-16 | 1986-02-27 | Mannesmann AG, 4000 Düsseldorf | Planheitsregelung an bandwalzgeruesten |
| SU1219196A1 (ru) * | 1984-12-26 | 1986-03-23 | Магнитогорский горно-металлургический институт им.Г.И.Носова | Способ автоматического регулировани плоскостности полосы на станах холодной прокатки |
| US4860212A (en) * | 1986-10-08 | 1989-08-22 | Kabushiki Kaisha Kobe Seiko Sho | Rolled strip shape detecting device with high accuracy |
| DE3912676A1 (de) * | 1989-04-18 | 1990-10-25 | Bwg Bergwerk Walzwerk | Verfahren und vorrichtung zum kontinuierlichen zugrecken von duennen baendern, insbesondere von metallischen baendern |
| JPH0523723A (ja) * | 1991-07-24 | 1993-02-02 | Toshiba Corp | 平坦度測定装置及びこの平坦度測定装置を用いた連続圧延機の制御装置 |
| US5471307A (en) * | 1992-09-21 | 1995-11-28 | Phase Shift Technology, Inc. | Sheet flatness measurement system and method |
| US5546779A (en) * | 1994-03-24 | 1996-08-20 | Danieli United, Inc. | Interstand strip gauge and profile conrol |
| DE19524729A1 (de) * | 1995-07-07 | 1997-01-16 | Sundwiger Eisen Maschinen | Verfahren und Vorrichtung zum Walzen von Bändern mit über ihrer Breite ungleichförmige Dicken- und/oder Längenverteilung |
| DE19719994B4 (de) * | 1997-05-13 | 2005-01-05 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Verfahren zur Beeinflussung der Spannungsverteilung in Metallbändern oder -tafeln aus insbesondere nichtferromagnetischem Material |
-
1998
- 1998-09-24 DE DE19843899A patent/DE19843899C1/de not_active Expired - Fee Related
-
1999
- 1999-08-14 EP EP99116003A patent/EP0988904B1/fr not_active Expired - Lifetime
- 1999-08-14 AT AT99116003T patent/ATE260151T1/de active
- 1999-08-14 ES ES99116003T patent/ES2212429T3/es not_active Expired - Lifetime
- 1999-08-14 DE DE59908627T patent/DE59908627D1/de not_active Expired - Lifetime
- 1999-09-10 ZA ZA9905849A patent/ZA995849B/xx unknown
- 1999-09-23 US US09/404,492 patent/US6164104A/en not_active Expired - Fee Related
- 1999-09-23 CA CA002283192A patent/CA2283192C/fr not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111085549A (zh) * | 2019-12-27 | 2020-05-01 | 山东钢铁集团日照有限公司 | 一种自动分段卸张在线检查带钢板形的方法 |
| CN111085549B (zh) * | 2019-12-27 | 2021-05-18 | 山东钢铁集团日照有限公司 | 一种自动分段卸张在线检查带钢板形的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE260151T1 (de) | 2004-03-15 |
| CA2283192C (fr) | 2003-12-30 |
| CA2283192A1 (fr) | 2000-03-24 |
| ZA995849B (en) | 2000-04-04 |
| EP0988904A3 (fr) | 2003-01-22 |
| ES2212429T3 (es) | 2004-07-16 |
| DE59908627D1 (de) | 2004-04-01 |
| DE19843899C1 (de) | 2000-05-04 |
| US6164104A (en) | 2000-12-26 |
| EP0988904B1 (fr) | 2004-02-25 |
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