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BR9912310A - Process and plant for the manufacture of hot rolled biphasic steels - Google Patents

Process and plant for the manufacture of hot rolled biphasic steels

Info

Publication number
BR9912310A
BR9912310A BR9912310-0A BR9912310A BR9912310A BR 9912310 A BR9912310 A BR 9912310A BR 9912310 A BR9912310 A BR 9912310A BR 9912310 A BR9912310 A BR 9912310A
Authority
BR
Brazil
Prior art keywords
cooling
plant
manufacture
hot rolled
dual
Prior art date
Application number
BR9912310-0A
Other languages
Portuguese (pt)
Inventor
August Sprock
Original Assignee
Sms Demag Ag
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 Sms Demag Ag filed Critical Sms Demag Ag
Publication of BR9912310A publication Critical patent/BR9912310A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Articles (AREA)
  • Control Of Heat Treatment Processes (AREA)

Abstract

The invention relates to the production of dual-phase steel (2) which is obtained by targeted cooling after the final deformation step in a rolling stand (1), whereby a dual-phase structure of between 70 and 90 % ferrite and between 30 and 10 % martensite is adjusted. So as to be independent of steel geometry and strip speed the invention provides for cooling to take the form of fluidized-bed cooling carried out in a cooling line (6) comprising water-cooling stages (7) arranged one behind the other.
BR9912310-0A 1998-07-24 1999-07-17 Process and plant for the manufacture of hot rolled biphasic steels BR9912310A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833321A DE19833321A1 (en) 1998-07-24 1998-07-24 Method and installation to produce dual phase steels out of hot-rolled strip, with cooling rate at first cooling stage set sufficiently low to obtain temperature which is sufficiently high for rapid transformation of austenite into ferrite
PCT/EP1999/005113 WO2000005422A1 (en) 1998-07-24 1999-07-17 Method and installation for producing dual-phase steel

Publications (1)

Publication Number Publication Date
BR9912310A true BR9912310A (en) 2004-08-31

Family

ID=7875154

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9912310-0A BR9912310A (en) 1998-07-24 1999-07-17 Process and plant for the manufacture of hot rolled biphasic steels

Country Status (11)

Country Link
EP (1) EP1108072B1 (en)
JP (1) JP2002521562A (en)
KR (1) KR100578823B1 (en)
CN (1) CN1173048C (en)
AT (1) ATE224959T1 (en)
BR (1) BR9912310A (en)
CA (1) CA2338743C (en)
DE (2) DE19833321A1 (en)
MY (1) MY124339A (en)
RU (1) RU2225453C2 (en)
WO (1) WO2000005422A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1013359A3 (en) * 2000-03-22 2001-12-04 Centre Rech Metallurgique Method for manufacturing a multi-band steel hot rolled.
NL1016042C2 (en) * 2000-08-29 2001-07-24 Corus Technology B V Hot rolled dual phase steel band for, e.g., automotive parts contains vanadium in place of chromium
AUPR048000A0 (en) * 2000-09-29 2000-10-26 Bhp Steel (Jla) Pty Limited A method of producing steel
KR100516519B1 (en) * 2001-12-26 2005-09-26 주식회사 포스코 A method for manufacturing the dual phase carbon steel wire by using controlled rolling and rapid cooling
KR100521596B1 (en) * 2002-11-20 2005-10-12 현대자동차주식회사 Processing method of automotive parts by direct resistance heating
DE10327383C5 (en) * 2003-06-18 2013-10-17 Aceria Compacta De Bizkaia S.A. Plant for the production of hot strip with dual phase structure
CN104001742A (en) * 2014-05-21 2014-08-27 中冶南方工程技术有限公司 Method for achieving controlled cooling on rolled pieces between and after bar finishing mill units
CN104384207A (en) * 2014-10-22 2015-03-04 南京钢铁股份有限公司 Cooling control method for hot rolling bearing steel bar and process arrangement of hot rolling bearing steel bar
KR102440768B1 (en) * 2020-12-18 2022-09-08 주식회사 포스코 Method and apparatus for manufacturng thick-sheet iron

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5818970B2 (en) * 1978-08-31 1983-04-15 川崎製鉄株式会社 Method for manufacturing high-strength thin steel sheets with excellent cold workability
US4388122A (en) * 1980-08-11 1983-06-14 Kabushiki Kaisha Kobe Seiko Sho Method of making high strength hot rolled steel sheet having excellent flash butt weldability, fatigue characteristic and formability
JPS57104650A (en) * 1980-12-19 1982-06-29 Kobe Steel Ltd High-strength hot-rolled steel plate and its manufacture
JPS57137452A (en) * 1981-02-20 1982-08-25 Kawasaki Steel Corp Hot rolled high tensile steel plate having composite structure and its manufacture
JPS57137426A (en) * 1981-02-20 1982-08-25 Kawasaki Steel Corp Production of low yield ratio, high tensile hot rolled steel plate by mixed structure
JPS61170518A (en) * 1985-01-25 1986-08-01 Kobe Steel Ltd Production of high-strength hot rolled steel sheet having excellent formability
JPS6293006A (en) * 1985-10-18 1987-04-28 Kobe Steel Ltd Production of high strength hot rolled steel sheet
JP3039842B2 (en) * 1994-12-26 2000-05-08 川崎製鉄株式会社 Hot-rolled and cold-rolled steel sheets for automobiles having excellent impact resistance and methods for producing them
FR2735148B1 (en) * 1995-06-08 1997-07-11 Lorraine Laminage HIGH-STRENGTH, HIGH-STRENGTH HOT-ROLLED STEEL SHEET CONTAINING NIOBIUM, AND METHODS OF MAKING SAME.
KR100301994B1 (en) * 1996-12-24 2001-11-22 이구택 Uniform Cooling Method of Hot Rolled Wire
KR100747495B1 (en) * 2006-11-10 2007-08-08 삼성전자주식회사 Variable capacity rotary compressor

Also Published As

Publication number Publication date
WO2000005422A1 (en) 2000-02-03
EP1108072A1 (en) 2001-06-20
KR20010071978A (en) 2001-07-31
DE59902877D1 (en) 2002-10-31
CN1311826A (en) 2001-09-05
EP1108072B1 (en) 2002-09-25
RU2225453C2 (en) 2004-03-10
JP2002521562A (en) 2002-07-16
ATE224959T1 (en) 2002-10-15
CN1173048C (en) 2004-10-27
CA2338743A1 (en) 2000-02-03
MY124339A (en) 2006-06-30
DE19833321A1 (en) 2000-01-27
CA2338743C (en) 2010-03-30
KR100578823B1 (en) 2006-05-11

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Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 17/07/1999, OBSERVADAS AS CONDICOES LEGAIS.

B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 17.07.2019