DE10106273A1 - Process for influencing the profile of rolled strip - Google Patents
Process for influencing the profile of rolled stripInfo
- Publication number
- DE10106273A1 DE10106273A1 DE10106273A DE10106273A DE10106273A1 DE 10106273 A1 DE10106273 A1 DE 10106273A1 DE 10106273 A DE10106273 A DE 10106273A DE 10106273 A DE10106273 A DE 10106273A DE 10106273 A1 DE10106273 A1 DE 10106273A1
- Authority
- DE
- Germany
- Prior art keywords
- strip
- profile
- roll stand
- rolled
- band
- 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- Withdrawn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
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000001816 cooling Methods 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- 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
- B21B45/0206—Coolants
-
- 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
-
- 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
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/613—Gases; Liquefied or solidified normally gaseous material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2221/00—Treating localised areas of an article
- C21D2221/02—Edge parts
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Beeinflussen des Profils von in mindestens einem Walzgerüst kalt zu walzendem Walzband.The invention relates to a method for influencing the profile of at least a roll stand cold rolled strip.
Beim Kaltwalzen von Bändern treten in den Bandkantenbereichen gegenüber den Bandmittenbereichen unterschiedliche Belastungen auf, die die Konstanz der Dicke des Bandes über seine Breite nachteilig beeinflussen. Neben der über die Breite der Walzen entstehenden thermischen Bombierung und dem stärkeren Walzenverschleiss in den Bandkantenbereichen, die eine gegenüber der Bandmitte dickeres Kantenprofil hervorrufen würden, wird im wesentlichen durch das Materialquerfließverhalten in Bandbreitenrichtung ein starker Dickenabfall im Kantenbereich hervorgerufen. Diese durch das Materialfließverhalten bewirkten, gegen die Bandmitte dünneren Bandkantenprofile, werden als edge drops bezeichnet.When cold rolling of strips, the strip edge areas face the Belt areas have different loads that affect the consistency of the thickness adversely affect the width of the tape. In addition to the width of the Thermal crowning and increased wear on the rollers in the band edge areas that have a thicker edge profile than the center of the band would cause, is essentially due to the material cross flow behavior in Bandwidth direction caused a sharp decrease in thickness in the edge area. This caused by the material flow behavior, thinner towards the center of the belt Band edge profiles are referred to as edge drops.
Eine Möglichkeit diese edge drops zu minimieren besteht gemäß der EP 0 776 710 A1 darin, die Walzenballen in den Bandkantenbereichen stärker zu kühlen. Hierdurch wird der Walzendurchmesser im Bandkantenbereich etwas verkleinert, so dass entsprechend sich der Walzspalt in diesen Bereichen vergrößert. Damit wird dem durch das Materialquerfließverhalten hervorgerufenen edge drop entgegengewirkt.According to EP 0 776 710 A1, one possibility is to minimize these edge drops in cooling the roll bales more strongly in the belt edge areas. This will the roller diameter in the band edge area is somewhat reduced, so that the roll gap increases accordingly in these areas. So that will edge drop caused by the material cross flow behavior.
Eine entsprechende Walzspaltvergrößerung kann im Bandkantenbereich auch durch Abdrehen der Walzen an den Ballenenden erreicht werden.A corresponding roll gap enlargement can also be carried out in the strip edge area Turning off the rollers at the end of the bale can be achieved.
Schließlich ist es auch bekannt, durch bandkantenorientiertes Verschieben der Arbeitswalzen auf die edge drop Bildung einzuwirken. Finally, it is also known to move the strip edge oriented Work rollers to act on the edge drop formation.
Wird der Bildung von edge drops nicht entgegengewirkt, so erreichen die gewalzten Bänder nicht die geforderte Banddickentoleranz über die gesamte Breite, so dass sie in dieser Form nicht verwendet werden können.If the formation of edge drops is not counteracted, the rolled drops reach Tapes do not meet the required tape thickness tolerance across the entire width, so they cannot be used in this form.
Notwendig ist dann eine weitere Bearbeitung, und zwar beispielsweise durch Besäumen der Kanten. Dies ist nicht nur ein zusätzlicher Arbeitsgang, sondern es entstehen auch nicht unerhebliche weitere Kosten.Further processing is then necessary, for example by Trimming the edges. This is not just an additional step, it is there are also significant additional costs.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zu schaffen, mit dem das Entstehen von edge drops minimiert werden kann.The invention has for its object to provide a method with which The occurrence of edge drops can be minimized.
Gelöst wird diese Aufgabe erfindungsgemäß dadurch, dass das Walzband vor dem Einlaufen in das oder das erste Walzgerüst an den gegenüberliegenden. Bandkantenbereichen stark abgekühlt wird.This object is achieved according to the invention in that the rolled strip before Run into the first roll stand or the opposite ones. Band edge areas is greatly cooled.
Dieses Abkühlen kann beispielsweise durch Beaufschlagung der Bandkantenbereiche mit flüssigem Stickstoff erfolgen.This cooling can take place, for example, by acting on the band edge areas done with liquid nitrogen.
Um die Abkühlung unter Berücksichtigung der üblicherweise hohen Walzgeschwindigkeiten möglichst schnell zu erreichen, ist es zweckmäßig, wenn die Bandkantenbereiche durch beidseitig des Bandes angeordnete u-förmige Einhausungen geführt werden, innerhalb derer die Bandkantenbereiche mit dem Kühlmittel beaufschlagt werden.To cool down taking into account the usually high To achieve rolling speeds as quickly as possible, it is useful if the Band edge areas by U-shaped arranged on both sides of the band Enclosures are guided, within which the band edge areas with the Coolant.
Bei dem erfindungsgemäßen Verfahren werden die Bandkanten des ungewalzten Bandes somit vor dem Einlaufen in das oder das erste Walzgerüst auf eine tiefere Temperatur gebracht. Die Folge davon ist, dass das Walzgut an den Bandkantenbereichen härter wird, so dass es schwerer verformbar ist. Außerdem zieht es sich bei diesen niedrigen Temperaturen etwas zusammen, wird also dünner. Schließlich wirkt sich aber diese niedrige Temperatur der Bandkanten auch auf die damit in Berührung kommenden Ballenenden der Walzen aus, denn diese werden in diesem Bereich durch die starke Abkühlung im Durchmesser verringert. Zusammen ergibt sich somit eine Summierung von Einflüssen, die dazu führen, dass das Band an den Bandkantenbereichen relativ zu dem mittleren bereich des Bandes weniger gewalzt wird, was folglich zu einer wesentliche Verringerung der edge drops führt.In the method according to the invention, the strip edges of the unwrought Thus, before entering the or the first roll stand, the strip is moved to a lower one Brought temperature. The consequence of this is that the rolling stock to the Band edge areas becomes harder, so that it is more difficult to deform. Also pulls it becomes a little thinner at these low temperatures. Ultimately, however, this low temperature of the strip edges also affects the coming in contact with the bale ends of the rollers, because these are in this area reduced by the strong cooling in diameter. Together this results in a summation of influences that lead to the fact that the tape at the tape edge areas relative to the central area of the tape less rolling, resulting in a significant reduction in edge drops leads.
Die erfindungsgemäße Lösung ist gegenüber den bekannten Verfahren besonders vorteilhaft, weil einerseits beispielsweise keine aufwendige Gestaltung der Walzgerüste notwendig ist, wie sie für die Arbeitswalzenverschiebung erforderlich wäre.The solution according to the invention is special compared to the known methods advantageous because, on the one hand, for example, no complex design of the Roll stands are necessary as required for the work roll shift would.
Andererseits erhöht sich durch oben genannten Einflüsse die Lebensdauer der Walzen und schließlich läßt sich die Einrichtung zur Kühlung der Bandkantenbereiche problemlos nachträglich installieren, ohne das Eingriffe in den Gesamtaufbau der Walzgerüste erforderlich sind.On the other hand, the above-mentioned influences increase the service life of the rolls and finally the device for cooling the band edge areas can be easily retrofitted without interfering with the overall structure of the Roll stands are required.
Vor dem Walzgerüst oder bei mehreren aufeinanderfolgenden Gerüsten, vor dem ersten Walzgerüst, sind beidseitig des zu zu walzenden Bandes Kühlboxen angeordnet, die beim Durchlauf des Bandes dieses in den gegenüberliegenden Bandkantenbereichen auf eine tiefere Temperaturen bringen.In front of the rolling stand or in the case of several successive stands, in front of the first roll stand, are cooling boxes on both sides of the strip to be rolled arranged, when passing the tape this in the opposite Bring band edge areas to a lower temperature.
Mit diesen stark abgekühlten Bandkanten läuft das Band dann in das Walzgerüst ein und wird dort in üblicher Weise gewalzt, wobei durch die vorher beschriebenen Einflüsse, die Entstehung von edge drops unterbunden zumindest aber wesentlich verringert wird.With these strongly cooled strip edges, the strip then runs into the roll stand and is rolled there in the usual way, whereby by the previously described Influences, the formation of edge drops at least substantially prevented is reduced.
Claims (3)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10106273A DE10106273A1 (en) | 2001-02-01 | 2001-02-01 | Process for influencing the profile of rolled strip |
| EP02701238A EP1355747B1 (en) | 2001-02-01 | 2002-01-21 | Method for altering the profile of a roller strip |
| CNB028042158A CN1230262C (en) | 2001-02-01 | 2002-01-21 | Method for altering profile of roller strip |
| PCT/DE2002/000254 WO2002060611A1 (en) | 2001-02-01 | 2002-01-21 | Method for altering the profile of a roller strip |
| DE50201285T DE50201285D1 (en) | 2001-02-01 | 2002-01-21 | METHOD FOR INFLUENCING THE PROFILE OF ROLLING STRIP |
| KR1020037008894A KR100821243B1 (en) | 2001-02-01 | 2002-01-21 | Method for altering the profile of a roller strip |
| JP2002560796A JP2004520169A (en) | 2001-02-01 | 2002-01-21 | Method for adjusting the shape of strip for rolling |
| AT02701238T ATE279271T1 (en) | 2001-02-01 | 2002-01-21 | METHOD FOR INFLUENCING THE PROFILE OF ROLLED STRIP |
| TW091101183A TWI233378B (en) | 2001-02-01 | 2002-01-24 | Method of influencing the profile of rolled strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10106273A DE10106273A1 (en) | 2001-02-01 | 2001-02-01 | Process for influencing the profile of rolled strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE10106273A1 true DE10106273A1 (en) | 2002-08-08 |
Family
ID=7673645
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE10106273A Withdrawn DE10106273A1 (en) | 2001-02-01 | 2001-02-01 | Process for influencing the profile of rolled strip |
| DE50201285T Expired - Lifetime DE50201285D1 (en) | 2001-02-01 | 2002-01-21 | METHOD FOR INFLUENCING THE PROFILE OF ROLLING STRIP |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE50201285T Expired - Lifetime DE50201285D1 (en) | 2001-02-01 | 2002-01-21 | METHOD FOR INFLUENCING THE PROFILE OF ROLLING STRIP |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1355747B1 (en) |
| JP (1) | JP2004520169A (en) |
| KR (1) | KR100821243B1 (en) |
| CN (1) | CN1230262C (en) |
| AT (1) | ATE279271T1 (en) |
| DE (2) | DE10106273A1 (en) |
| TW (1) | TWI233378B (en) |
| WO (1) | WO2002060611A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2833871B1 (en) * | 2001-12-20 | 2004-07-09 | Usinor | METHOD AND PLANT FOR MANUFACTURING METAL STRIPS FROM STRIPS CAST DIRECTLY FROM LIQUID METAL |
| UA94068C2 (en) * | 2006-10-21 | 2011-04-11 | Смс Зимаг Акциенгезелльшафт | Device for measuring tension in metallic strip |
| KR200449465Y1 (en) * | 2010-02-08 | 2010-07-12 | 윤원섭 | Adr automatic dispenser system |
| CN102059250B (en) * | 2010-11-09 | 2012-07-04 | 燕山大学 | Electro-plastic two-roll mill of low-temperature liquid nitrogen cooling medium |
| CN110404964B (en) * | 2019-07-08 | 2020-07-31 | 中南大学 | Rolling preparation method of aluminum alloy strip with poor performance in width direction |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5586602A (en) * | 1978-12-25 | 1980-06-30 | Kawasaki Steel Corp | Skinpass rolling method for cold rolled steel strip |
| JPS5674301A (en) * | 1979-11-20 | 1981-06-19 | Sumitomo Metal Ind Ltd | Preventing method for edge drop of steel strip during rolling work |
| JPS5758909A (en) * | 1980-09-29 | 1982-04-09 | Nippon Steel Corp | Controller for rolled shape |
| DE4433720A1 (en) * | 1994-09-21 | 1996-03-28 | Linde Ag | Method and device for hardening ski steel edges |
| DE19654068A1 (en) * | 1996-12-23 | 1998-06-25 | Schloemann Siemag Ag | Method and device for rolling a rolled strip |
| JPH10192903A (en) * | 1997-01-10 | 1998-07-28 | Sumitomo Metal Ind Ltd | Method for edge drawing down of slab for hot rolling |
| JP3276318B2 (en) * | 1997-08-28 | 2002-04-22 | 三菱重工業株式会社 | Cooling device for steel plate edge |
-
2001
- 2001-02-01 DE DE10106273A patent/DE10106273A1/en not_active Withdrawn
-
2002
- 2002-01-21 EP EP02701238A patent/EP1355747B1/en not_active Expired - Lifetime
- 2002-01-21 WO PCT/DE2002/000254 patent/WO2002060611A1/en active IP Right Grant
- 2002-01-21 DE DE50201285T patent/DE50201285D1/en not_active Expired - Lifetime
- 2002-01-21 KR KR1020037008894A patent/KR100821243B1/en not_active IP Right Cessation
- 2002-01-21 AT AT02701238T patent/ATE279271T1/en active
- 2002-01-21 JP JP2002560796A patent/JP2004520169A/en active Pending
- 2002-01-21 CN CNB028042158A patent/CN1230262C/en not_active Expired - Fee Related
- 2002-01-24 TW TW091101183A patent/TWI233378B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP1355747A1 (en) | 2003-10-29 |
| CN1489497A (en) | 2004-04-14 |
| JP2004520169A (en) | 2004-07-08 |
| KR20030068572A (en) | 2003-08-21 |
| EP1355747B1 (en) | 2004-10-13 |
| WO2002060611A1 (en) | 2002-08-08 |
| CN1230262C (en) | 2005-12-07 |
| KR100821243B1 (en) | 2008-04-10 |
| TWI233378B (en) | 2005-06-01 |
| ATE279271T1 (en) | 2004-10-15 |
| DE50201285D1 (en) | 2004-11-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8139 | Disposal/non-payment of the annual fee |