WO2003035292A1 - Verfahren zur aufarbeitung von walzen - Google Patents
Verfahren zur aufarbeitung von walzen Download PDFInfo
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000005096 rolling process Methods 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims description 24
- 238000005098 hot rolling Methods 0.000 claims description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 238000003754 machining Methods 0.000 claims description 8
- 230000002706 hydrostatic effect Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 238000009419 refurbishment Methods 0.000 description 5
- 238000010626 work up procedure Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 238000012958 reprocessing Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 230000035508 accumulation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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)
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 (de) | 2001-10-19 | 2002-06-29 | Verfahren zur aufarbeitung von walzen |
BR0211724-0A BR0211724A (pt) | 2001-10-19 | 2002-06-29 | Método para renovar os cilindros |
CA002457168A CA2457168A1 (en) | 2001-10-19 | 2002-06-29 | Method for refurbishing rolls |
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 (de) | 2001-10-19 | 2001-10-23 | Verfahren zur Aufbereitung von Walzen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003035292A1 true WO2003035292A1 (de) | 2003-05-01 |
Family
ID=7703705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/007214 WO2003035292A1 (de) | 2001-10-19 | 2002-06-29 | Verfahren zur aufarbeitung von walzen |
Country Status (14)
Country | Link |
---|---|
US (1) | US20040244455A1 (zh) |
EP (2) | EP1304174A1 (zh) |
JP (1) | JP3854274B2 (zh) |
KR (1) | KR100594644B1 (zh) |
CN (1) | CN1282507C (zh) |
AT (1) | ATE289532T1 (zh) |
AU (1) | AU2002325855B9 (zh) |
BR (1) | BR0211724A (zh) |
CA (1) | CA2457168A1 (zh) |
DE (1) | DE50202340D1 (zh) |
ES (1) | ES2238061T3 (zh) |
PL (1) | PL367793A1 (zh) |
RU (1) | RU2280520C2 (zh) |
WO (1) | WO2003035292A1 (zh) |
Families Citing this family (6)
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)
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)
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 |
-
2001
- 2001-10-23 EP EP01125177A patent/EP1304174A1/de not_active Withdrawn
-
2002
- 2002-06-29 PL PL02367793A patent/PL367793A1/xx unknown
- 2002-06-29 JP JP2003537844A patent/JP3854274B2/ja not_active Expired - Fee Related
- 2002-06-29 WO PCT/EP2002/007214 patent/WO2003035292A1/de active IP Right Grant
- 2002-06-29 CA CA002457168A patent/CA2457168A1/en not_active Abandoned
- 2002-06-29 RU RU2004102899/02A patent/RU2280520C2/ru not_active IP Right Cessation
- 2002-06-29 CN CNB028177967A patent/CN1282507C/zh not_active Expired - Fee Related
- 2002-06-29 BR BR0211724-0A patent/BR0211724A/pt not_active Application Discontinuation
- 2002-06-29 US US10/485,197 patent/US20040244455A1/en not_active Abandoned
- 2002-06-29 EP EP02760208A patent/EP1436103B1/de not_active Revoked
- 2002-06-29 KR KR1020047002357A patent/KR100594644B1/ko not_active IP Right Cessation
- 2002-06-29 AT AT02760208T patent/ATE289532T1/de not_active IP Right Cessation
- 2002-06-29 ES ES02760208T patent/ES2238061T3/es not_active Expired - Lifetime
- 2002-06-29 DE DE50202340T patent/DE50202340D1/de not_active Revoked
- 2002-06-29 AU AU2002325855A patent/AU2002325855B9/en not_active Ceased
Patent Citations (3)
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)
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 (en) | 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 (de) | 2005-02-23 |
CN1282507C (zh) | 2006-11-01 |
EP1436103A1 (de) | 2004-07-14 |
EP1304174A1 (de) | 2003-04-23 |
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