WO2003035292A1 - Procede de remise en etat de cylindres - Google Patents

Procede de remise en etat de cylindres Download PDF

Info

Publication number
WO2003035292A1
WO2003035292A1 PCT/EP2002/007214 EP0207214W WO03035292A1 WO 2003035292 A1 WO2003035292 A1 WO 2003035292A1 EP 0207214 W EP0207214 W EP 0207214W WO 03035292 A1 WO03035292 A1 WO 03035292A1
Authority
WO
WIPO (PCT)
Prior art keywords
roll
rolling
roller
liquid jet
rolls
Prior art date
Application number
PCT/EP2002/007214
Other languages
German (de)
English (en)
Inventor
Peter Eschner
Original Assignee
Aluminium Norf Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7703705&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2003035292(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Aluminium Norf Gmbh filed Critical Aluminium Norf Gmbh
Priority to KR1020047002357A priority Critical patent/KR100594644B1/ko
Priority to AU2002325855A priority patent/AU2002325855B9/en
Priority to AT02760208T priority patent/ATE289532T1/de
Priority to EP02760208A priority patent/EP1436103B1/fr
Priority to BR0211724-0A priority patent/BR0211724A/pt
Priority to CA002457168A priority patent/CA2457168A1/fr
Priority to DE50202340T priority patent/DE50202340D1/de
Priority to US10/485,197 priority patent/US20040244455A1/en
Priority to JP2003537844A priority patent/JP3854274B2/ja
Publication of WO2003035292A1 publication Critical patent/WO2003035292A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B28/00—Maintaining rolls or rolling equipment in effective condition
    • B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
    • B21B28/04—Maintaining rolls in effective condition, e.g. reconditioning while in use, e.g. polishing or grinding while the rolls are in their stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B28/00—Maintaining rolls or rolling equipment in effective condition
    • B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning

Definitions

  • the invention relates to a method for working up rolls of a hot rolling stand for aluminum materials for the production of rolling mill products, in which the roll is worked up after or during use by machining the roll surface.
  • rolls for the production of rolling mill products have a roll surface which is adapted to the respective intended use.
  • work rolls for hot or cold rolling of metal strips have a roll surface with a defined roughness in order to ensure that the rolling stock is gripped securely by the rolls and that a defined surface of the rolling stock is produced.
  • Other types of rolls such as back-up rolls, strip drawing rolls or the like, also have a defined roll surface, which ensures that these rolls function properly.
  • the work rolls used in the hot rolling of aluminum strips have a polished structure on their surface, which on the one hand ensures the production of the desired surface properties of the rolling stock and on the other hand contributes to the safe gripping of the rolling stock by the rolls, which prevents slipping in the roll gap.
  • aluminum oxide or aluminum particles or - depending on the rolled alloy - magnesium oxide or magnesium particles settle in the recesses of this ground structure. These particles are compressed in the recesses by the high rolling pressure force in such a way that they fill the recesses of the ground structure in a compact and very resistant manner. This in turn means that the grinding structure on the roll surface is no longer effective after a certain period of use of the roll during rolling.
  • the deposits formed on the roller surface are also referred to as rolled shirts.
  • rolls are cost-intensive products to be manufactured, they are, as is known from the prior art, not completely replaced after the formation of a rolled shirt or the like, but removed and worked up by machining the roll surface. After working up, the rolls have the desired properties on their roll surface and can be used again. It is known from the prior art to refurbish the rolls by machining the roll surface using mechanically abrasive methods, such as grinding. In this process, the deposited impurities and the material of the roller itself are removed from the roller surface in a defined manner in order to produce an unused roller surface. In some cases, the roller surfaces are also subjected to a new coating or hardening after the mechanical abrasive treatment.
  • the rolls are finally used up after a certain number of work-ups, ie also after Refurbishment not reusable. On the one hand, this is due to the change in the geometric properties, on the other hand, it is also due to the reaching of material layers of the roller material, which are no longer suitable for further processing due to a lack of strength or the like.
  • the present invention is based on the object of specifying a method for reconditioning rollers for the production of rolled products, which ensures simple, fast and inexpensive reprocessing of the rollers.
  • the previously derived and shown object is achieved in that the roller surface is processed with the aid of a liquid jet and the liquid pressure is set to approximately 50 to 250 MPa, preferably 70 to 150 MPa, when the liquid jet is generated.
  • Liquid jet can be removed almost without residue.
  • the processing of the roll surface with the aid of a liquid jet is particularly advantageous in that the original roll surface is hardly changed thereby, so that, for example, there is no decrease in the roll diameter during processing.
  • the fact that the actual roll surface is almost unchanged during processing with the aid of a liquid jet means that the roll remains true to size even after the processing.
  • the requirements for processing with the aid of a liquid jet are therefore compared to mechanical abrasive processes, in which dimensional accuracy must be guaranteed, are much lower.
  • the processing of the roll surface with the help of a liquid jet can be done significantly faster than the processing of the roll surface with mechanically abrasive processes such as grinding.
  • the method according to the invention can also be combined with the mechanically abrasive methods known from the prior art.
  • liquid pressure when generating the liquid jet according to the invention is set to about 50 to 250 MPa (10 6 Pa), preferably 70 to 150 MPa, ensures that the residues and contaminants on the rollers are reliably detached.
  • mechanically driven piston pumps plurize such pressures, in some cases with the additional use of hydraulic pressure intensifiers.
  • the method according to the invention experiences a first advantageous embodiment in that the roller surface is processed for processing exclusively with the aid of a liquid jet. It has been found that the processing of the roller surface with the aid of a liquid jet for processing rollers is so thorough that further processing of the roller surface, in particular by brushing, is unnecessary. In particular, coatings of the roller surface, which have been applied, for example, to increase the strength of the roller surface, generally also remain obtained during processing with the help of a liquid jet.
  • the teaching according to the invention is advantageously further developed in that the machining is carried out within rolling breaks.
  • the rolling process there are regular breaks in the rolling, which result from the system, for example, from the transport of a new ingot to the rolling stand or the like. These roll breaks can easily be used to process the rolls according to the invention.
  • water is used as the liquid further optimizes the method according to the invention with regard to environmental compatibility, occupational safety and the costs associated with the method. With the use of water, trouble-free compliance with explosion safety is guaranteed.
  • the water obtained during the processing can be easily treated within the framework of customary disposal measures or can remain in a water cycle, for example the emulsion water cycle of a hot roller.
  • the use of alternative liquids is possible to produce the liquid jet used for processing.
  • the quality of the water used must be adapted to the respective application.
  • the addition of particles in an appropriate dosage is also conceivable in order to increase the cleaning power or to process the roll surface in a shape-changing manner.
  • Fig. 1 shows schematically a greatly enlarged section through the roll surface of a work roll
  • Fig. 2 is a perspective view of a roller during processing using the method according to the invention.
  • Fig. 1 shows the profile of a work roll of a hot rolling stand for aluminum alloys.
  • the actual roller material 1 is shown hatched. In the present case, it is a steel roller. For other applications e.g. cast iron rollers are also used. It can be clearly seen that the roller surface is contoured on the scale shown and has a plurality of elevations 2 and depressions 3. These elevations 2 and depressions 3 provided in the roll material 1, generally referred to as roughness, ensure, when using the work roll shown, as already mentioned, among other things, a reliable gripping of the rolling stock by the rolls and a desired one
  • the roller surface shown in FIG. 1 belongs to a roller that has already been used to a considerable extent.
  • 3 aluminum oxide and aluminum particles have accumulated in the depressions during the hot rolling of aluminum strips, which particles have been compressed to form deposits 5 by the high rolling pressure.
  • the deposits 5 shown in FIG. 1 already cover part of the elevations 2, as a result of which the grip between the roll surface and the rolling stock is reduced. This increasingly leads to effects such as the slipping of the rollers, the detachment of deposits 5 that remain on the surface of the rolling stock, and to the pointally greater accumulations of deposits 5 that leave impressions on the surface of the rolling stock.
  • the roll surface shown in Fig. 1 must be worked up to continue to produce perfect rolling stock.
  • the work-up takes place in that the roll surface is processed with the aid of a liquid jet, as shown in FIG. 2.
  • a liquid jet as shown in FIG. 2.
  • water is preferably used as the liquid, since a hot / oil emulsion is used for hot rolling itself, so the water is not a foreign substance in the process.
  • a roller 6 shown in FIG. 2 has a roll shirt 7 consisting of the deposits 5 shown in FIG. 1, which has to be removed during processing.
  • the work-up takes place in that the roller surface 8 is processed with the aid of a liquid jet 9 which emerges from a jet lance 10.
  • the rolled shirt has been removed.
  • the refurbishment according to the invention shown in FIG. 2 can take place both in the installed and in the removed state of the roller 6.
  • the jet lance 10 can be guided manually or automatically. It is advisable to arrange a device within the roll stand which automatically guides the jet lance 10 over the roll surface 8 when the roll 6 is being worked up, in order to remove the roll shirt as soon as this is necessary. This is also possible during the rolling process.
  • a water jet with a pressure of approximately 200 MPa without the addition of particles was used for the processing in the described processing.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Detergent Compositions (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Seasonings (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un procédé permettant de remettre en état des cylindres utilisés pour produire des laminés. Selon ce procédé, les cylindres sont remis en état, après ou pendant leur utilisation, par réusinage de leur surface. Un tel procédé est sensiblement amélioré, du point de vue des temps d'arrêt et des coûts associés, par le fait que la surface des cylindres est réusinée au moyen d'un jet de liquide, la pression du liquide lors de la production du jet étant réglée entre 50 et 250 MPa, de préférence entre 70 et 150 MPa.
PCT/EP2002/007214 2001-10-19 2002-06-29 Procede de remise en etat de cylindres WO2003035292A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
KR1020047002357A KR100594644B1 (ko) 2001-10-19 2002-06-29 롤을 재연마하는 방법
AU2002325855A AU2002325855B9 (en) 2001-10-19 2002-06-29 Method for reconditioning rollers
AT02760208T ATE289532T1 (de) 2001-10-19 2002-06-29 Verfahren zur aufarbeitung von walzen
EP02760208A EP1436103B1 (fr) 2001-10-19 2002-06-29 Procede de remise en etat de cylindres
BR0211724-0A BR0211724A (pt) 2001-10-19 2002-06-29 Método para renovar os cilindros
CA002457168A CA2457168A1 (fr) 2001-10-19 2002-06-29 Procede de remise en etat de cylindres
DE50202340T DE50202340D1 (de) 2001-10-19 2002-06-29 Verfahren zur aufarbeitung von walzen
US10/485,197 US20040244455A1 (en) 2001-10-19 2002-06-29 Method for reconditioning rollers
JP2003537844A JP3854274B2 (ja) 2001-10-19 2002-06-29 ロールの改修方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10152718.7 2001-10-19
DE10152718 2001-10-19
EP01125177.4 2001-10-23
EP01125177A EP1304174A1 (fr) 2001-10-19 2001-10-23 Procédé pour le reconditionnement de cylindres de laminage

Publications (1)

Publication Number Publication Date
WO2003035292A1 true WO2003035292A1 (fr) 2003-05-01

Family

ID=7703705

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/007214 WO2003035292A1 (fr) 2001-10-19 2002-06-29 Procede de remise en etat de cylindres

Country Status (14)

Country Link
US (1) US20040244455A1 (fr)
EP (2) EP1304174A1 (fr)
JP (1) JP3854274B2 (fr)
KR (1) KR100594644B1 (fr)
CN (1) CN1282507C (fr)
AT (1) ATE289532T1 (fr)
AU (1) AU2002325855B9 (fr)
BR (1) BR0211724A (fr)
CA (1) CA2457168A1 (fr)
DE (1) DE50202340D1 (fr)
ES (1) ES2238061T3 (fr)
PL (1) PL367793A1 (fr)
RU (1) RU2280520C2 (fr)
WO (1) WO2003035292A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004006629B3 (de) * 2004-02-10 2005-11-17 Sundwig Gmbh Vorrichtung zum Reinigen der Oberfläche von zylindrischen Körpern, wie Walzen oder Rollen
DE102007012102A1 (de) * 2007-03-13 2008-09-18 Polysius Ag Verfahren zur Wiederaufarbeitung einer gebrauchten Mahlwalze
FR2915118B1 (fr) * 2007-04-18 2009-06-05 Siemens Vai Metals Tech Sas Procede de nettoyage de cylindre de laminoir et dispositif correspondant
DE102013105399A1 (de) 2013-05-27 2014-11-27 Hydro Aluminium Rolled Products Gmbh Walzvorrichtung und Verfahren zur Konditionierung einer Walzenoberfläche
CN104942011B (zh) * 2015-06-17 2016-09-28 铜陵市大明玛钢有限责任公司 高铬钢冷轧辊的表面养护方法
KR102167119B1 (ko) * 2017-07-20 2020-10-16 주식회사 엘지화학 이차전지용 전극 제조시스템 및 제조방법

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06106213A (ja) * 1992-09-30 1994-04-19 Kawasaki Steel Corp 冷間圧延ミル出側ロールの寿命延長方法
US5460023A (en) * 1991-09-13 1995-10-24 International Rolling Mill Consultants Inc. Roll surface restoration system and method
DE19848174A1 (de) * 1998-10-20 2000-05-04 Bwg Bergwerk Walzwerk Verfahren und Vorrichtung zum Reinigen von Walzen und/oder Rollen in Bandgießanlagen, Walzwerken und/oder Bandprozeßlinien, insbesondere Dressierwerken o. dgl. Nachwalzwerken

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467629A (en) * 1981-10-02 1984-08-28 Sms Schloemann-Siemag Ag Method of flattening steel strip in rolling mill
US5025547A (en) * 1990-05-07 1991-06-25 Aluminum Company Of America Method of providing textures on material by rolling
JP3307771B2 (ja) * 1993-08-23 2002-07-24 ハンス‐ユルゲン、ガイドール 熱間圧延鋼板のデスケーリング手段
US5697241A (en) * 1993-08-23 1997-12-16 Voest-Alpine Industrieanlagenbau Gmbh Rolling arrangement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5460023A (en) * 1991-09-13 1995-10-24 International Rolling Mill Consultants Inc. Roll surface restoration system and method
JPH06106213A (ja) * 1992-09-30 1994-04-19 Kawasaki Steel Corp 冷間圧延ミル出側ロールの寿命延長方法
DE19848174A1 (de) * 1998-10-20 2000-05-04 Bwg Bergwerk Walzwerk Verfahren und Vorrichtung zum Reinigen von Walzen und/oder Rollen in Bandgießanlagen, Walzwerken und/oder Bandprozeßlinien, insbesondere Dressierwerken o. dgl. Nachwalzwerken

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 380 (M - 1639) 18 July 1994 (1994-07-18) *

Also Published As

Publication number Publication date
BR0211724A (pt) 2004-09-21
AU2002325855B2 (en) 2005-11-10
JP2005506203A (ja) 2005-03-03
ES2238061T3 (es) 2005-08-16
PL367793A1 (en) 2005-03-07
ATE289532T1 (de) 2005-03-15
KR20040044445A (ko) 2004-05-28
US20040244455A1 (en) 2004-12-09
CN1553831A (zh) 2004-12-08
JP3854274B2 (ja) 2006-12-06
CA2457168A1 (fr) 2003-05-01
KR100594644B1 (ko) 2006-07-07
DE50202340D1 (de) 2005-03-31
RU2004102899A (ru) 2005-06-10
RU2280520C2 (ru) 2006-07-27
AU2002325855B9 (en) 2006-04-06
EP1436103B1 (fr) 2005-02-23
CN1282507C (zh) 2006-11-01
EP1436103A1 (fr) 2004-07-14
EP1304174A1 (fr) 2003-04-23

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