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EP0986443A4 - Amorphous or glassy alloy surfaced rolls for the continuous casting of metal strip - Google Patents

Amorphous or glassy alloy surfaced rolls for the continuous casting of metal strip

Info

Publication number
EP0986443A4
EP0986443A4 EP98923930A EP98923930A EP0986443A4 EP 0986443 A4 EP0986443 A4 EP 0986443A4 EP 98923930 A EP98923930 A EP 98923930A EP 98923930 A EP98923930 A EP 98923930A EP 0986443 A4 EP0986443 A4 EP 0986443A4
Authority
EP
European Patent Office
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.)
Granted
Application number
EP98923930A
Other languages
German (de)
French (fr)
Other versions
EP0986443A1 (en
EP0986443B1 (en
Inventor
Lazar Strezov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Castrip LLC
Original Assignee
BHP Steel JLA Pty Ltd
IHI Corp
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
Application filed by BHP Steel JLA Pty Ltd, IHI Corp filed Critical BHP Steel JLA Pty Ltd
Publication of EP0986443A1 publication Critical patent/EP0986443A1/en
Publication of EP0986443A4 publication Critical patent/EP0986443A4/en
Application granted granted Critical
Publication of EP0986443B1 publication Critical patent/EP0986443B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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 And Refinement Of Metals (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (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.
EP98923930A 1997-06-02 1998-06-02 Amorphous or glassy alloy surfaced rolls for the continuous casting of metal strip Expired - Lifetime EP0986443B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPO710497 1997-06-02
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 (3)

Publication Number Publication Date
EP0986443A1 EP0986443A1 (en) 2000-03-22
EP0986443A4 true EP0986443A4 (en) 2001-01-03
EP0986443B1 EP0986443B1 (en) 2003-12-17

Family

ID=3801395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98923930A Expired - Lifetime EP0986443B1 (en) 1997-06-02 1998-06-02 Amorphous or glassy alloy surfaced rolls for the continuous casting of metal strip

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 (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100668123B1 (en) 2000-05-12 2007-01-15 신닛뽄세이테쯔 카부시키카이샤 Cooling drum for continuously casting thin cast piece and fabricating method and device therefor and thin cast piece and continuous casting method therefor
MY134786A (en) * 2001-09-14 2007-12-31 Nucor Corp Casting steel strip
US7048033B2 (en) 2001-09-14 2006-05-23 Nucor Corporation Casting steel strip
US7485196B2 (en) 2001-09-14 2009-02-03 Nucor Corporation Steel product with a high austenite grain coarsening temperature
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
WO2004065038A1 (en) 2003-01-24 2004-08-05 Nucor Corporation Casting steel strip
US20040144518A1 (en) 2003-01-24 2004-07-29 Blejde Walter N. Casting steel strip with low surface roughness and low porosity
US10071416B2 (en) 2005-10-20 2018-09-11 Nucor Corporation High strength thin cast strip product and method for making the same
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
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
CN115555525A (en) * 2022-10-14 2023-01-03 四川大学 Device and method for measuring solidification speed of rapidly solidified thin strip in real time

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57130750A (en) * 1981-02-05 1982-08-13 Nittetsu Hard Kk Roll for continuous casting
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
DE69419593T3 (en) * 1993-11-18 2005-06-09 Castrip, Llc (N.D.Ges.D. Staates Delaware) MOLDING A CONTINUOUS STEEL STRIP TO A SURFACE OF SPECIFIC ROUGHNESS
AUPN176495A0 (en) * 1995-03-15 1995-04-13 Bhp Steel (Jla) Pty Limited Casting of metal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 044 (M - 455) 21 February 1986 (1986-02-21) *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 259 (C - 441) 21 August 1987 (1987-08-21) *

Also Published As

Publication number Publication date
CN1096900C (en) 2002-12-25
JP2002501437A (en) 2002-01-15
AUPO710497A0 (en) 1997-06-26
BR9811107A (en) 2000-07-18
CN1445033A (en) 2003-10-01
EP0986443A1 (en) 2000-03-22
CN1258239A (en) 2000-06-28
ID24078A (en) 2000-07-06
KR20010013319A (en) 2001-02-26
CA2288754A1 (en) 1998-12-10
DE69820618D1 (en) 2004-01-29
ATE256516T1 (en) 2004-01-15
NZ500871A (en) 2001-02-23
EP0986443B1 (en) 2003-12-17
WO1998055251A1 (en) 1998-12-10

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