DE69820618D1 - ROLLERS WITH AMORPHER OR GLASS ALLOY SURFACE FOR CONTINUOUSLY CASTING METAL STRIPS - Google Patents
ROLLERS WITH AMORPHER OR GLASS ALLOY SURFACE FOR CONTINUOUSLY CASTING METAL STRIPSInfo
- Publication number
- DE69820618D1 DE69820618D1 DE69820618T DE69820618T DE69820618D1 DE 69820618 D1 DE69820618 D1 DE 69820618D1 DE 69820618 T DE69820618 T DE 69820618T DE 69820618 T DE69820618 T DE 69820618T DE 69820618 D1 DE69820618 D1 DE 69820618D1
- Authority
- DE
- Germany
- Prior art keywords
- casting
- molten steel
- roll
- rolls
- amorphous alloy
- 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.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Soft Magnetic Materials (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Twin roll casting has been applied with some success to non-ferrous metals, which solidify rapidly on cooling. The same, however, is not true for ferrous metals, as it has not been possible to achieve sufficiently rapid and even cooling of metal over the casting surfaces of the rolls. This problem has been overcome by utilising a metallic surface for the rolls, which has a high affinity for the molten steel of the casting pool and a melting temperature greater than the temperature of the casting surface. The molten steel produces extremely good wetting of the casting surface of the roll, resulting in a wetting angle of the molten steel on the casting surface of less than 40 DEG . Preferably, this wetting angle is less than 20 DEG and the casting surface has an Arithmetic Mean Roughness Value (Ra) of less than 10 microns. These desirable properties on the roll surface are achieved by selecting an at least partially amorphous alloy of two constituents. Preferably, the alloy is a fully amorphous alloy of the nickel-phosphorus systemcontaining about 10 % phosphorus and the balance nickel, which may be applied by eletroless coating. This roll surface prevents the build-up of iron oxide on the casting surfaces of the rolls, which build-up interferes with the uniform conduction of heat away from the molten steel, resulting in simultaneous solidification of the delta and gamma iron phases (0.01-0.18 %C), which causes a surface defect, known as "crocodile-skin". The net effect of utilising this amorphous alloy for the surface of the casting roll is a superior and uniform conduction of heat away from the molten steel, rapid transformation of the steel's microstructure into the wholly austenitic ( gamma ) region, exhibited by fine prior austenite grain boundaries conforming to dendritic grain boundaries and absence of "crocodile-skin" surface defects on the cast strip.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPO7104A AUPO710497A0 (en) | 1997-06-02 | 1997-06-02 | Casting metal strip |
| PCT/AU1998/000412 WO1998055251A1 (en) | 1997-06-02 | 1998-06-02 | Amorphous or glassy alloy surfaced rolls for the continuous casting of metal strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE69820618D1 true DE69820618D1 (en) | 2004-01-29 |
Family
ID=3801395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69820618T Expired - Lifetime DE69820618D1 (en) | 1997-06-02 | 1998-06-02 | ROLLERS WITH AMORPHER OR GLASS ALLOY SURFACE FOR CONTINUOUSLY CASTING METAL STRIPS |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP0986443B1 (en) |
| JP (1) | JP2002501437A (en) |
| KR (1) | KR20010013319A (en) |
| CN (2) | CN1096900C (en) |
| AT (1) | ATE256516T1 (en) |
| AU (1) | AUPO710497A0 (en) |
| BR (1) | BR9811107A (en) |
| CA (1) | CA2288754A1 (en) |
| DE (1) | DE69820618D1 (en) |
| ID (1) | ID24078A (en) |
| NZ (1) | NZ500871A (en) |
| WO (1) | WO1998055251A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100668126B1 (en) * | 2000-05-12 | 2007-01-16 | 신닛뽄세이테쯔 카부시키카이샤 | Apparatus for processing cooling drum for continuously casting thin cast piece |
| US7690417B2 (en) | 2001-09-14 | 2010-04-06 | Nucor Corporation | Thin cast strip with controlled manganese and low oxygen levels and method for making same |
| US7485196B2 (en) | 2001-09-14 | 2009-02-03 | Nucor Corporation | Steel product with a high austenite grain coarsening temperature |
| US7048033B2 (en) | 2001-09-14 | 2006-05-23 | Nucor Corporation | Casting steel strip |
| MY134786A (en) * | 2001-09-14 | 2007-12-31 | Nucor Corp | Casting steel strip |
| KR101076090B1 (en) | 2003-01-24 | 2011-10-21 | 누코 코포레이션 | Casting steel strip |
| US20040144518A1 (en) | 2003-01-24 | 2004-07-29 | Blejde Walter N. | Casting steel strip with low surface roughness and low porosity |
| US9999918B2 (en) | 2005-10-20 | 2018-06-19 | Nucor Corporation | Thin cast strip product with microalloy additions, and method for making the same |
| US9149868B2 (en) | 2005-10-20 | 2015-10-06 | Nucor Corporation | Thin cast strip product with microalloy additions, and method for making the same |
| US10071416B2 (en) | 2005-10-20 | 2018-09-11 | Nucor Corporation | High strength thin cast strip product and method for making the same |
| AU2008100847A4 (en) | 2007-10-12 | 2008-10-09 | Bluescope Steel Limited | Method of forming textured casting rolls with diamond engraving |
| WO2011100798A1 (en) | 2010-02-20 | 2011-08-25 | Bluescope Steel Limited | Nitriding of niobium steel and product made thereby |
| US8505611B2 (en) | 2011-06-10 | 2013-08-13 | Castrip, Llc | Twin roll continuous caster |
| CN111036865B (en) * | 2020-01-10 | 2024-04-30 | 中冶赛迪技术研究中心有限公司 | Electro-hydraulic direct-drive small square billet continuous casting crystallizer vibration driving device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57130750A (en) * | 1981-02-05 | 1982-08-13 | Nittetsu Hard Kk | Roll for continuous casting |
| JPS60196209A (en) * | 1984-03-19 | 1985-10-04 | Sumitomo Metal Ind Ltd | Three-layer plated hot rolling roll |
| JPS6260879A (en) * | 1985-09-10 | 1987-03-17 | Ngk Insulators Ltd | Wear resistant copper alloy member |
| DE3742594A1 (en) * | 1987-12-16 | 1989-06-29 | Schenzel Heinz Guenther Dipl I | Method for increasing the corrosion stability of metallic workpieces, and metallic workpiece having an anti-corrosive coating on its surface |
| JPH02160145A (en) * | 1988-12-10 | 1990-06-20 | Kawasaki Steel Corp | Cooling roll for producing rapidly cooled strip and production thereof |
| MY111637A (en) * | 1992-11-30 | 2000-10-31 | Bhp Steel Jla Pty Ltd | Metal strip casting |
| WO1995013889A1 (en) * | 1993-11-18 | 1995-05-26 | Bhp Steel (Jla) Pty Ltd | Casting stainless steel strip on surface with specified roughness |
| AUPN176495A0 (en) * | 1995-03-15 | 1995-04-13 | Bhp Steel (Jla) Pty Limited | Casting of metal |
-
1997
- 1997-06-02 AU AUPO7104A patent/AUPO710497A0/en not_active Abandoned
-
1998
- 1998-06-02 JP JP50111699A patent/JP2002501437A/en active Pending
- 1998-06-02 KR KR19997011314A patent/KR20010013319A/en not_active Application Discontinuation
- 1998-06-02 CA CA002288754A patent/CA2288754A1/en not_active Abandoned
- 1998-06-02 DE DE69820618T patent/DE69820618D1/en not_active Expired - Lifetime
- 1998-06-02 NZ NZ500871A patent/NZ500871A/en unknown
- 1998-06-02 WO PCT/AU1998/000412 patent/WO1998055251A1/en active IP Right Grant
- 1998-06-02 AT AT98923930T patent/ATE256516T1/en not_active IP Right Cessation
- 1998-06-02 BR BR9811107-8A patent/BR9811107A/en not_active Application Discontinuation
- 1998-06-02 CN CN98805502A patent/CN1096900C/en not_active Expired - Fee Related
- 1998-06-02 ID IDW991508A patent/ID24078A/en unknown
- 1998-06-02 EP EP98923930A patent/EP0986443B1/en not_active Expired - Lifetime
-
2002
- 2002-05-13 CN CN02119196A patent/CN1445033A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998055251A1 (en) | 1998-12-10 |
| EP0986443B1 (en) | 2003-12-17 |
| ATE256516T1 (en) | 2004-01-15 |
| CN1445033A (en) | 2003-10-01 |
| EP0986443A4 (en) | 2001-01-03 |
| CN1096900C (en) | 2002-12-25 |
| JP2002501437A (en) | 2002-01-15 |
| CN1258239A (en) | 2000-06-28 |
| ID24078A (en) | 2000-07-06 |
| AUPO710497A0 (en) | 1997-06-26 |
| NZ500871A (en) | 2001-02-23 |
| CA2288754A1 (en) | 1998-12-10 |
| EP0986443A1 (en) | 2000-03-22 |
| KR20010013319A (en) | 2001-02-26 |
| BR9811107A (en) | 2000-07-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8332 | No legal effect for de |