EP1345718A1 - Verfahren zum herstellen eines metallbandes mit einer bandgiessmaschine - Google Patents
Verfahren zum herstellen eines metallbandes mit einer bandgiessmaschineInfo
- Publication number
- EP1345718A1 EP1345718A1 EP01989617A EP01989617A EP1345718A1 EP 1345718 A1 EP1345718 A1 EP 1345718A1 EP 01989617 A EP01989617 A EP 01989617A EP 01989617 A EP01989617 A EP 01989617A EP 1345718 A1 EP1345718 A1 EP 1345718A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- casting
- material layer
- strip
- cast
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/0648—Casting surfaces
- B22D11/0651—Casting wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/0697—Accessories therefor for casting in a protected atmosphere
Definitions
- the invention relates to a method for operating a belt casting machine, in which metal melt is poured between two rotatable casting rolls, a gas film being formed between the respective casting roll surface and the band skin of the metal melt which forms in the process, in which the gas is in the one located above the metal bath Inerting chamber is introduced.
- the invention further relates to a jacket ring for the casting tube of the strip casting machine.
- BESTATIGUNGSKOPIE ze is prevented and a sufficient thermal conductivity is also intended.
- these depressions however, a corresponding roughness arises on the surface of the cast metal strip.
- each of these casters can be reworked relatively quickly, since the indentations, which can be up to 100 micrometers in size, are reduced by the wear on the surface of the rollers.
- These depressions or textures, in which dirt accumulates relatively quickly, are also often to be cleaned.
- the object of the present invention is to provide a method according to the type mentioned at the outset, by means of which the surface roughness of the metal strip to be cast can be determined, even when using casting rolls with depressions distributed over their surface.
- the object is achieved according to the invention in that a controlled amount of a gas of argon, nitrogen and / or another gas is fed into the inerting chamber during the casting, so that the heat transfer from the band skin to the casting tube is influenced by the resulting film thickness of the gas film can be that the casting roll surface can be provided with or without depressions and a smooth surface of the strip to be cast can be achieved.
- a defined mixture of argon and nitrogen is used as the gas, by means of which the roughness of the surface of the strip to be cast can be adjusted as desired.
- BESTATIGUNGSKOPIE tape and thus greater elongation in the recessed area of the roll surface, with which possible shrinkage cracks can be avoided.
- the surface roughness of the metal strip to be cast can be kept to a minimum by using a defined gas mixture.
- FIG. 1 shows a partial cross section of a strip casting machine for the casting rolls
- FIG. 2 shows a schematic section of an enlarged part of a
- Jacket ring as well as a gas film and a band skin.
- FIG. 1 shows two casting rolls 11, 12, a side seal 16 and an upper end element 14 with sealing strips 13, 17, of a band casting machine 10 used in particular for the production of steel strips.
- a closed inerting chamber 24 is formed above the metal bath formed between the rollers 11, 12 and can be filled with an inert gas via a connecting line 29. Will be beneficial
- BESTATIGUNGSKOPIE a further connection line 31 blows an additional protective gas 32 away from the chamber 24 onto the respective roller surface 11 ', 12' in order to keep the latter free from any oxygen deposition.
- a gas film is formed between the respective casting roller surface 11 ′ and the band skin D of the molten metal 18 that is formed, in which the gas is essentially introduced into the inerting chamber 24 located above the metal bath.
- a controlled amount of a gas G3 of argon, nitrogen and / or a third gas is fed into the inerting chamber 24 during the casting through the connecting line 29, so that the heat transfer from the band skin D3 to the casting tube 11, 12 through the
- the resulting film thickness of the gas film G3 can be influenced in such a way that the casting roller surface 11 ', 12' can be provided with (or without) depressions and a smooth surface of the strip to be cast can be achieved.
- the base material A is provided with an application of an additional material layer C which contains ceramic or cermet particles.
- This ceramic layer C applied to the base material A has depressions 51 in the micrometer range distributed over the entire surface, which can be produced, for example, by sandblasting or laser roughening. These recesses result in an indicated heat transfer ⁇ , which is manifested by a sawtooth curve.
- the majority of the gas G1 is argon, which does not diffuse into the metal to be poured off and accordingly expands in the respective depression due to the heating, so that an indentation in the band skin D1 is of course formed in the micrometer range, the skin being thinner than in the area next to the depression.
- the gas G2 mostly uses nitrogen, which partially diffuses into the metal 18 to be poured off. This results in a bulging of the ligament D2.
- a mixture of argon and nitrogen is used for the gas G3.
- this mixture achieves the ideal state, namely that the band skin D3 is neither indented nor bulged out, and thus a smooth surface is produced in the band to be produced. Due to the controlled amount of the defined mixture of argon and nitrogen, this smooth surface can be achieved with the metal strip without great effort.
- the base material A is made from pure copper, from a copper alloy with the main components Cu, Ag or Cu, Cr, Zr or Cu, Ni, Be (beryllium) or from steel, in particular an alloy steel. It is characterized by the good thermal conductivity, which ensures that the water flowing through a cooling channel in the jacket ring of the GiessroUe dissipates as much thermal energy as possible.
- FIG. 3 shows an enlarged detail of a cylindrical surface which is smooth, which is preferably provided with a surface roughness of less than 6, preferably less than 1 micrometer, and is therefore finished by grinding or turning. It is also a material applied to the base material A
- BESTATIGUNGSKOPIE Layer B is provided, which preferably consists of nickel, steel and / or chrome.
- the material layer B and the material layer C are applied by a thermal spraying process, for example by plasma spraying, flame spraying, by HIP cladding or by another coating method, for example electrolysis.
- the base material A can consist of steel or a steel alloy, however, the material layer B as alloy steel, which is produced by welding, and the material layer C as a thin ceramic application of approximately 0.2 to 0.4 millimeters.
- the material layer C consisting of two different ceramic materials C1, C2 is applied on the material layer B in such a way that the one ceramic material C2 extends over the entire outer surface and the other ceramic material C1 is embedded as particles in the first material C2 at approximately uniform intervals. Adequate protection of the layer B and the base material A is thus achieved and at the same time sufficient thermal conductivity is generated.
- the wear of material layer C is very low due to the choice of materials C1 and C2.
- For the ceramic or cermet layers C1, C2 in particular Al 2 0 3, SiAl 2 0 2, PSZr0 2, Si 3 N 4 SiAION, SiAlYON and / or SiC are usable.
- a metered quantity of a gas of argon, nitrogen and / or a third gas is again fed into the inerting chamber during the casting, so that the heat transfer from the band skin to the casting tube can be influenced by the resulting film thickness of the gas film G so that the Band skin D1 forms a smooth surface.
- the ceramic material C1 embedded in particles at approximately uniform intervals in the first material C2 is
- BESTATIGUNGSKOPIE acts a different heat transfer, which is lower in the area of the particles C1 than in C2, which means that the band skin D2 is reduced in C1.
- a balancing effect is achieved with the gas film G, which is preferably composed of a defined mixture of gases, in order to be able to achieve the desired smooth surface of the strip.
- the cast roller surface 1 1 ', 12' can also have a surface roughness of 6 to 10 micrometers and only be provided with the applied material layer C without post-processing.
- the jacket ring is advantageously coated on the original diameter for further use. This is done by applying a material layer C consisting of ceramic particles or cermet layer after the corresponding wear.
- the invention is sufficiently demonstrated with the exemplary embodiments explained above. However, they are presented in other variants.
- the material layer B and the material layer C consisting of the ceramic particles could be applied simultaneously to the base material.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH02541/00A CH692184A5 (de) | 2000-12-30 | 2000-12-30 | Verfahren zum Betreiben einer Bandgiessmaschine sowie ein Mantelring für eine Giessrolle zur Durchführung des Verfahrens. |
| CH254100 | 2000-12-30 | ||
| PCT/EP2001/015277 WO2002053312A1 (de) | 2000-12-30 | 2001-12-21 | Verfahren zum betreiben einer bandgiessmachine sowie ein mantelring für eine giessrolle zur durchführung des verfahrens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1345718A1 true EP1345718A1 (de) | 2003-09-24 |
| EP1345718B1 EP1345718B1 (de) | 2006-05-31 |
Family
ID=4569990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01989617A Expired - Lifetime EP1345718B1 (de) | 2000-12-30 | 2001-12-21 | Verfahren zum herstellen eines metallbandes mit einer bandgiessmaschine |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7108047B2 (de) |
| EP (1) | EP1345718B1 (de) |
| CN (1) | CN1229195C (de) |
| AT (1) | ATE327847T1 (de) |
| CH (1) | CH692184A5 (de) |
| DE (1) | DE50109985D1 (de) |
| WO (1) | WO2002053312A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927324B (zh) * | 2009-06-25 | 2013-09-04 | 宝山钢铁股份有限公司 | 一种改善铸带表面质量的方法 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE381401T1 (de) * | 2003-10-03 | 2008-01-15 | Novelis Inc | Oberflächenstrukturierung von giessbändern für stranggussmaschinen |
| US20090242162A1 (en) * | 2006-04-26 | 2009-10-01 | Ihi Corporation | Sealing device for twin roll caster |
| CN100434207C (zh) * | 2006-07-21 | 2008-11-19 | 江苏兴利来特钢有限公司 | 薄板坯的连铸装置 |
| US7806966B2 (en) * | 2007-12-27 | 2010-10-05 | Bose Ranendra K | Nitrogen inerting system for explosion prevention in aircraft fuel tank and oxygenating system for improving combustion efficiency of aerospace rockets/ aircraft engines |
| DE102008017432A1 (de) * | 2008-04-03 | 2009-10-08 | Kme Germany Ag & Co. Kg | Gießform |
| CN119681246B (zh) * | 2025-02-14 | 2025-08-29 | 广东工业大学 | 基于水导激光的仿生结构、制备方法、应用方法及装置 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5921416A (ja) * | 1982-07-26 | 1984-02-03 | Sumitomo Electric Ind Ltd | 金属の塑性加工用工具およびその製造法 |
| US5103895A (en) | 1989-07-20 | 1992-04-14 | Nippon Steel Corporation | Method and apparatus of continuously casting a metal sheet |
| FR2666757B1 (fr) * | 1990-09-14 | 1992-12-18 | Usinor Sacilor | Virole pour cylindre de coulee continue des metaux, notamment de l'acier, entre cylindres ou sur un cylindre. |
| AUPM589894A0 (en) * | 1994-05-27 | 1994-06-23 | Bhp Steel (Jla) Pty Limited | Metal strip casting |
| WO1996002340A1 (de) * | 1994-07-18 | 1996-02-01 | Siemens Aktiengesellschaft | Giesswalzen-verschleissschutzschicht |
| FR2727338A1 (fr) * | 1994-11-30 | 1996-05-31 | Usinor Sacilor | Dispositif de coulee continue entre cylindres a capotage d'inertage |
| AUPN176495A0 (en) * | 1995-03-15 | 1995-04-13 | Bhp Steel (Jla) Pty Limited | Casting of metal |
| FR2732627B1 (fr) * | 1995-04-07 | 1997-04-30 | Usinor Sacilor | Procede et dispositif de reglage du bombe des cylindres d'une installation de coulee de bandes metalliques |
| AU7418198A (en) * | 1997-05-23 | 1998-12-11 | Voest-Alpine Industrieanlagenbau Gmbh | Casting cylinder for thin-band continuous casting installation |
| AT408198B (de) * | 1998-03-25 | 2001-09-25 | Voest Alpine Ind Anlagen | Verfahren zum stranggiessen eines dünnen bandes sowie vorrichtung zur durchführung des verfahrens |
| FR2791286B1 (fr) * | 1999-03-26 | 2001-05-04 | Lorraine Laminage | Procede de fabrication de bandes en acier au carbone par coulee continue entre deux cylindres |
| US6470550B1 (en) * | 1999-11-11 | 2002-10-29 | Shear Tool, Inc. | Methods of making tooling to be used in high temperature casting and molding |
-
2000
- 2000-12-30 CH CH02541/00A patent/CH692184A5/de not_active IP Right Cessation
-
2001
- 2001-12-21 US US10/451,964 patent/US7108047B2/en not_active Expired - Fee Related
- 2001-12-21 DE DE50109985T patent/DE50109985D1/de not_active Expired - Lifetime
- 2001-12-21 WO PCT/EP2001/015277 patent/WO2002053312A1/de not_active Ceased
- 2001-12-21 EP EP01989617A patent/EP1345718B1/de not_active Expired - Lifetime
- 2001-12-21 CN CNB018216013A patent/CN1229195C/zh not_active Expired - Fee Related
- 2001-12-21 AT AT01989617T patent/ATE327847T1/de active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO02053312A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927324B (zh) * | 2009-06-25 | 2013-09-04 | 宝山钢铁股份有限公司 | 一种改善铸带表面质量的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CH692184A5 (de) | 2002-03-15 |
| ATE327847T1 (de) | 2006-06-15 |
| DE50109985D1 (de) | 2006-07-06 |
| CN1229195C (zh) | 2005-11-30 |
| US20040045696A1 (en) | 2004-03-11 |
| US7108047B2 (en) | 2006-09-19 |
| EP1345718B1 (de) | 2006-05-31 |
| CN1484558A (zh) | 2004-03-24 |
| WO2002053312A1 (de) | 2002-07-11 |
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