EP4139065A1 - Method for operating a metal strip processing system, and metal strip processing system - Google Patents
Method for operating a metal strip processing system, and metal strip processing systemInfo
- Publication number
- EP4139065A1 EP4139065A1 EP21702468.6A EP21702468A EP4139065A1 EP 4139065 A1 EP4139065 A1 EP 4139065A1 EP 21702468 A EP21702468 A EP 21702468A EP 4139065 A1 EP4139065 A1 EP 4139065A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal strip
- processing system
- strip processing
- strip
- electronically
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 103
- 238000012545 processing Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005096 rolling process Methods 0.000 claims abstract description 59
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 238000004458 analytical method Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 9
- 241001272996 Polyphylla fullo Species 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008654 plant damage Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/003—Regulation of tension or speed; Braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
- B21C47/345—Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the tension or advance of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/04—Thickness, gauge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/10—Cross-sectional area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/12—Length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/02—Vertical deviation, e.g. slack, looper height
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/04—Lateral deviation, meandering, camber of product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/20—Track of product
-
- 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
-
- 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
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
Definitions
- the invention relates to a method for operating a metal strip processing system which has at least one strip processing unit for processing a metal strip passing through the metal strip processing system, the strip processing unit being in the form of a rolling train having at least one rolling stand, a cooling section or a reel.
- the invention also relates to a metal strip processing system with at least one strip processing unit for processing a metal strip passing through the metal strip processing system and at least one system electronics for operating the metal strip processing system, the strip processing unit being in the form of a rolling train having at least one rolling stand, a cooling section or a reel.
- a so-called high-walker or band-walker in a metal strip processing plant is an event in which a rolling stock in the form of a metal strip is not gripped by a rolling stand of a rolling mill. If such a high-walker is present, the metal strip no longer runs properly through the metal strip processing system. Instead, the rolling stock remains on a roll stand or between roll stands, so that a material jam forms. The rolling stock can also remain lying on an outfeed roller table of a cooling section or in an infeed of a reel system or bump, which also results in a material jam.
- High levels in a metal strip processing system can be influenced by a mechanical and electrical condition of the rolling train of the metal strip processing system.
- temperature control and a minimization of sabotage of the rolling stock play the main roles in the entire metal strip processing plant. Effects in the material, such as phase changes between or in the roll stands, can also lead to high-flying.
- Geometrical effects when high walkers occur are wedge-shaped thickness profiles of metal strips from upstream process stages of a continuous casting plant or when slitting slabs.
- Insufficiently maintained reheating furnaces with false air entry at leaky furnace doors during slab discharge and the resulting temperature gradients across the width of a metal strip lead to asymmetrical rolling behavior across the width of the metal strip and thus to one-sided bumps and bumps in the rolling mill.
- Logistics of the rolling program design with geometrical and material-related commission changes in the rolling plan and slab allocation in the reheating furnaces are further causes of high-ups.
- KR 10 1997 0 033 119 discloses a device for analyzing data from a hot strip rolling mill with a faulty rolling detection unit.
- One object of the invention is to enable a holistic, automatic detection and analysis of high-levelers.
- the at least one strip processing unit for processing a metal strip passing through the metal strip processing system wherein the strip processing unit is in the form of a rolling train having at least one roll stand, a cooling section or a reel, is determined electronically taking into account at least one parameter of the metal strip detected by means of a measuring unit of the metal strip processing system and / or taking into account at least one operating parameter of the strip processing unit whether the metal strip can run properly through the
- Metal strip processing system is given or not. According to the invention, it is automatically determined electronically whether a proper passage of the metal strip through the
- Metal strip processing system is given or, in particular due to a high walker, is not given.
- This enables automatic documentation and storage of high-level work and associated production data, some of which can also contain fault data.
- the storage of high goers and associated production data makes a holistic automatic analysis of high goers possible, which in turn enables a prediction of the risk of the occurrence of high goers for certain production data. Such predictions can, for example, be displayed to an operating personnel in order to be able to carry out an optimal planning of a rolling process.
- preventive maintenance of a metal strip processing system is possible on the basis of the analysis of high walkers, which reduces
- Metal strip processing line These measures can either be carried out immediately or during the next planned repair shutdown. In this way, high levels of activity and the associated system downtimes can be reduced in the long term, which increases the degree of utilization and improves product quality will. The result is an optimization of the costs for the plant operation and an increase in the output.
- the method according to the invention can be carried out taking into account at least one parameter of the metal strip recorded by means of a measuring unit of the metal strip processing system.
- a band parameter can be, for example, a thickness, a width, a thickness profile, a flatness, a temperature or the like.
- These strip parameters can be recorded, for example, by means of measuring units arranged in the exit of the rolling train or finishing train directly behind the last roll stand of the rolling train.
- the method can also be carried out taking into account two or more such band parameters.
- the strip parameter is measured at a specific location within the metal strip processing plant, for example within the rolling train, at an outlet of the rolling train, within the cooling section, at an outlet of the cooling section, at an inlet of the reel or the like.
- the method according to the invention can take into account at least one operating parameter Belt processing unit are carried out.
- the operating parameters can be continuously recorded electronically for this purpose.
- the operating parameter can be, for example, a speed of a work roll of a roll stand of the rolling train, a mechanical load on the roll stand by means of a rolling process carried out with it, an activation state of the reel or the like.
- the method according to the invention can also take into account two or more operating parameters of the
- Belt processing unit are carried out. If two or more strip processing units are present, the method according to the invention can be carried out by each strip processing unit, taking into account at least one operating parameter.
- the automated recording of high-walkers together with pass schedule data offers the possibility of a holistic evaluation of high-walkers depending on geometry data and material data.
- the consideration of the material of the metal strip can be via the
- Deformation resistance k w take place.
- the deformation resistance is according to the elementary rolling theory according to the equations and to be determined from the pass schedule data.
- F means the rolling force in the roll stand, Id the pressed length in the roll gap, ho the entry thickness of the metal strip into the respective roll stand, hi the exit thickness of the metal strip from the respective roll stand, r the work roll radius and b the metal strip width.
- This can be used for future rolling programs depending on the rolled
- Materials and geometry parameters indicate a probability for the occurrence of high-walkers by forming a correlation between the number of high-walkers and the product mix (material characterized by deformation resistance, as well as thickness and width).
- a meter stamp for the parameters of the metal strip or for the operating parameters of the strip processing unit is determined electronically.
- / means the length of the finished strip or preliminary strip and d the thickness of the finished strip or preliminary strip.
- the pre-strip parameters and the finished strip parameters, in particular the temperature and thickness, of the metal strip and the pass decrease in the respective roll stand of the hot strip mill are known. Due to the law of constant volume, these parameters satisfy the above constant volume equation, from which in particular a theoretical finished strip length I finished strip results.
- the metal strip In the case of a high walker in the rolling mill, the metal strip either does not reach the respective measuring point in the exit of the rolling mill or implausible meter stamps are formed. Both are a clear indication of the presence of a high walker, which can thus be recorded electronically.
- an AND query is carried out electronically for a meter stamp to be expected at a measurement location.
- errors in the measuring unit can be ruled out even when ascertaining the presence of a high-rise.
- a meter stamp can be detected and at the same time queried or it can be determined from a signal from the measuring unit used to detect the meter stamp whether the measuring unit is properly operational. So here is the The measuring signal of the measuring unit is linked to an operating status signal of the measuring unit via an AND query, so that it can be ruled out that a measuring signal is used to determine the presence of a high walker, which is essentially caused by an operating error of the measuring unit.
- a plausibility check with regard to the respective measuring signal can be carried out.
- a plausibility signal generated in this way can be linked to the measurement signal via an AND query, so that it can be ruled out that a measurement signal is used to determine the presence of a high-walker that is not plausible.
- a length of the metal strip to be expected at a measuring location is electronically compared with a length of the metal strip measured at the measuring location, and it is electronically determined that the metal strip does not pass through the metal strip processing system properly if the measured length is ⁇ 80%. the expected length.
- the presence of an improper strip passage of the metal strip through the metal strip processing system can be determined if the measured length is ⁇ 30% of the expected length.
- a time stamp is electronically generated and stored with parameters of a currently running rolling program.
- the time stamp together with the parameters of the currently running rolling program, an assignment of a high-leveler to the rolling data, which contains, for example, a strip geometry, a strip material or the like, as well as data on a furnace in the rolling mill and data on a continuous casting plant for a starting material is given.
- a measuring unit such as a camera
- the tape processing unit itself and / or from entries in a level 2 or level 3 system across all process stages.
- the parameter of the metal strip is recorded electronically by means of a measuring unit arranged in an outlet of the rolling train or by means of a measuring unit arranged in an outlet of the cooling section or by means of a measuring unit arranged in an inlet of the reel.
- This is a direct method for determining high walkers, especially in rolling mills. For example, an operating parameter of the rolling stand “stand loaded” can be recorded at a first point in time, while an operating parameter of the reel “reel active” can be recorded at a later point in time. If there is a difference of 10 s between the two times, it is concluded electronically that there is a high walker.
- a strip speed of the metal strip on a roll stand of the multi-stand rolling train is less than a predetermined limit value.
- This method of ascertaining walkover can be used, for example, in a hot strip mill.
- the respective strip speed at the respective roll stand of the rolling mills can be over a rotational speed of the respective work rolls of the roll stands can be detected. This results in a speed profile of the metal strip or the work rolls over the length of the rolling train.
- a metal strip processing system has at least one strip processing unit for processing a metal strip passing through the metal strip processing system and at least one system electronics for operating the metal strip processing system, the strip processing unit being in the form of a rolling train having at least one rolling stand, a cooling section or a reel and the system electronics for performing the method is set up according to one of the above-mentioned configurations or a combination of at least two of these configurations with one another.
- the advantages mentioned above with reference to the method are correspondingly associated with the metal strip processing system.
- the metal strip processing plant can also have the rolling train, the cooling section and the reel.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020205120.8A DE102020205120A1 (en) | 2020-04-22 | 2020-04-22 | Method for operating a metal strip processing system and a metal strip processing system |
PCT/EP2021/051986 WO2021213706A1 (en) | 2020-04-22 | 2021-01-28 | Method for operating a metal strip processing system, and metal strip processing system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4139065A1 true EP4139065A1 (en) | 2023-03-01 |
EP4139065B1 EP4139065B1 (en) | 2023-09-20 |
Family
ID=74418465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21702468.6A Active EP4139065B1 (en) | 2020-04-22 | 2021-01-28 | Method for operating a metal strip processing system, and metal strip processing system |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4139065B1 (en) |
DE (1) | DE102020205120A1 (en) |
WO (1) | WO2021213706A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4176985B1 (en) * | 2021-11-08 | 2024-02-14 | SMS Group GmbH | Method for predicting an imminent breakout situation of a rolled strip in a rolling mill |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3688532A (en) * | 1970-11-24 | 1972-09-05 | Antonio Vicente Silva | Control system for tandem rolling mill based on the constant volume principle |
DE3240602A1 (en) * | 1982-11-03 | 1984-06-14 | Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH, 4000 Düsseldorf | METHOD FOR REGULATING THE TENSION DISTRIBUTION IN COLD ROLLING OF TAPES |
EP0109235B1 (en) * | 1982-11-11 | 1987-05-27 | DAVY McKEE (SHEFFIELD) LIMITED | Rolling mill control for tandem rolling |
DE4413913C2 (en) * | 1993-04-30 | 1998-10-15 | Krupp Hoesch Stahl Ag | Method of preventing folding jam when rolling metal strip |
KR0173508B1 (en) | 1995-12-23 | 1999-02-18 | 김종진 | Cobol data analysis device for hot rolling |
KR100836453B1 (en) * | 2001-12-26 | 2008-06-09 | 주식회사 포스코 | Method for detecting the fracture of the roughing roll |
EP3202502A1 (en) * | 2016-02-04 | 2017-08-09 | Primetals Technologies Germany GmbH | Strip position control |
-
2020
- 2020-04-22 DE DE102020205120.8A patent/DE102020205120A1/en active Pending
-
2021
- 2021-01-28 WO PCT/EP2021/051986 patent/WO2021213706A1/en unknown
- 2021-01-28 EP EP21702468.6A patent/EP4139065B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2021213706A1 (en) | 2021-10-28 |
EP4139065B1 (en) | 2023-09-20 |
DE102020205120A1 (en) | 2021-10-28 |
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