TW200502405A - Method and facility for manufacturing hot strip having dual-phase microstructure - Google Patents

Method and facility for manufacturing hot strip having dual-phase microstructure

Info

Publication number
TW200502405A
TW200502405A TW093117287A TW93117287A TW200502405A TW 200502405 A TW200502405 A TW 200502405A TW 093117287 A TW093117287 A TW 093117287A TW 93117287 A TW93117287 A TW 93117287A TW 200502405 A TW200502405 A TW 200502405A
Authority
TW
Taiwan
Prior art keywords
cooling
stages
temperature
tcoiling
tfinish
Prior art date
Application number
TW093117287A
Other languages
Chinese (zh)
Other versions
TWI300443B (en
Inventor
Karl-Ernst Hensger
Wolfgang Hennig
Tillmann Boecher
Christian Bilgen
Original Assignee
Sms Demag Ag
Aceria Compacta De Bizkaia S A
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=33546580&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=TW200502405(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sms Demag Ag, Aceria Compacta De Bizkaia S A filed Critical Sms Demag Ag
Publication of TW200502405A publication Critical patent/TW200502405A/en
Application granted granted Critical
Publication of TWI300443B publication Critical patent/TWI300443B/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
    • 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
    • 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
    • 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
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for cooling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before 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
    • 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
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • 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

Abstract

The aim of the invention is to be able to produce dual-phase steels under local conditions even in the existing cooling section of a continuous casting and rolling plant by means of controlled cooling of the hot-rolled strip in two cooling stages following the forming process. The aim is achieved by respecting the chemical composition of the initial steel within precisely defined limits and cooling in two stages from a finished rolled strip temperature Tfinish (in which A3 -100K < Tfinish < A3 -50K) to a coiling strip temperature Tcoiling (in which Tcoiling < 300 DEG C ) ( initial Martensite temperature), the cooling speed V1, 2 in both cooling stages ranging between 30 and 150 K/s, preferably between 50 and 90 K/s. The first cooling stage is carried out until the cooling curve enters the ferrite range, whereupon the heat released by the transformation of the austenite into ferrite is used for isothermally holding the obtained strip temperature Tconst during a holding time ≤ 5 s until the beginning of the second cooling stage.
TW093117287A 2003-06-18 2004-06-16 Method and facility for manufacturing hot strip having dual-phase microstructure TWI300443B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10327383A DE10327383C5 (en) 2003-06-18 2003-06-18 Plant for the production of hot strip with dual phase structure

Publications (2)

Publication Number Publication Date
TW200502405A true TW200502405A (en) 2005-01-16
TWI300443B TWI300443B (en) 2008-09-01

Family

ID=33546580

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093117287A TWI300443B (en) 2003-06-18 2004-06-16 Method and facility for manufacturing hot strip having dual-phase microstructure

Country Status (14)

Country Link
US (1) US20070175548A1 (en)
EP (1) EP1633894B1 (en)
JP (1) JP5186636B2 (en)
KR (1) KR20060057538A (en)
CN (1) CN100381588C (en)
CA (1) CA2529837C (en)
DE (1) DE10327383C5 (en)
EG (1) EG23893A (en)
MY (1) MY136875A (en)
RU (1) RU2346061C2 (en)
TW (1) TWI300443B (en)
UA (1) UA81329C2 (en)
WO (1) WO2004111279A2 (en)
ZA (1) ZA200509876B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100447260C (en) * 2006-06-23 2008-12-31 宝山钢铁股份有限公司 Quick cooling test plant for disk type band steel, and method of use
EP2361699A1 (en) * 2010-02-26 2011-08-31 Siemens Aktiengesellschaft Method for cooling sheet metal with a cooling section, cooling section and control and/or regulating device for a cooling section
DE102011000089A1 (en) * 2011-01-11 2012-07-12 Thyssenkrupp Steel Europe Ag Method for producing a hot rolled flat steel product
CN103215420B (en) * 2012-12-31 2015-02-04 西安石油大学 Obtaining method of large deformation pipe line steel double phase structure
CN104043660B (en) * 2013-09-26 2015-09-30 北大方正集团有限公司 A kind of production technology of non-hardened and tempered steel
DE102017206540A1 (en) 2017-04-18 2018-10-18 Sms Group Gmbh Apparatus and method for cooling metal strips or sheets
DE102017127470A1 (en) * 2017-11-21 2019-05-23 Sms Group Gmbh Chilled beams and cooling process with variable cooling rate for steel sheets
DE102017220891A1 (en) * 2017-11-22 2019-05-23 Sms Group Gmbh Method for cooling a metallic material and cooling beam
CN109576581A (en) 2018-11-30 2019-04-05 宝山钢铁股份有限公司 A kind of great surface quality, low yield strength ratio hot-rolled high-strength steel plate and manufacturing method
CN110724801B (en) * 2019-10-28 2021-02-12 重庆科技学院 Method for improving strength and toughness of Cr-Mo ultrahigh-strength steel by direct cryogenic treatment after austenite and ferrite two-phase region isothermal heat treatment
RU2724217C1 (en) * 2020-02-04 2020-06-22 Антон Владимирович Шмаков Method of producing rolled steel

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Publication number Priority date Publication date Assignee Title
US3533261A (en) * 1967-06-15 1970-10-13 Frans Hollander Method and a device for cooling hot-rolled metal strip on a run-out table after being rolled
FR223577A (en) * 1973-12-11
US4159218A (en) * 1978-08-07 1979-06-26 National Steel Corporation Method for producing a dual-phase ferrite-martensite steel strip
SE430902B (en) * 1979-05-09 1983-12-19 Svenskt Stal Ab SET TO HEAT TREAT A STALBAND WITH 0.05 - 0.20% CARBON CONTENT AND LOW CONTENTS
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
JPS57137452A (en) * 1981-02-20 1982-08-25 Kawasaki Steel Corp Hot rolled high tensile steel plate having composite structure and its manufacture
DE3440752A1 (en) * 1984-11-08 1986-05-22 Thyssen Stahl AG, 4100 Duisburg METHOD FOR PRODUCING HOT TAPE WITH A TWO-PHASE TEXTURE
JPS63207410A (en) 1987-02-24 1988-08-26 Kawasaki Steel Corp Method for preventing variation of sheet width of hot rolled steel strip
JPH0763749B2 (en) 1988-11-15 1995-07-12 日本鋼管株式会社 Cooling method after hot rolling
JPH0390206A (en) * 1989-08-31 1991-04-16 Kobe Steel Ltd Control method for cooling of hot rolled steel plate
JPH04167916A (en) 1990-10-30 1992-06-16 Sumitomo Metal Ind Ltd Device for controlling pressure of feeding water for spraying
JPH06190419A (en) 1992-12-24 1994-07-12 Kawasaki Steel Corp Method for cooling strip
JPH06238312A (en) * 1993-02-18 1994-08-30 Sumitomo Metal Ind Ltd Method for controlling cooling of hot rolled steel sheet
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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.
EP0750049A1 (en) * 1995-06-16 1996-12-27 Thyssen Stahl Aktiengesellschaft Ferritic steel and its manufacture and use
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Also Published As

Publication number Publication date
CN100381588C (en) 2008-04-16
MY136875A (en) 2008-11-28
KR20060057538A (en) 2006-05-26
CA2529837C (en) 2012-08-21
EP1633894B1 (en) 2017-04-26
WO2004111279A3 (en) 2005-05-06
CA2529837A1 (en) 2004-12-23
JP5186636B2 (en) 2013-04-17
EP1633894A2 (en) 2006-03-15
ZA200509876B (en) 2006-11-29
CN1820086A (en) 2006-08-16
EG23893A (en) 2007-12-13
RU2006101338A (en) 2006-06-10
DE10327383B4 (en) 2010-10-14
UA81329C2 (en) 2007-12-25
TWI300443B (en) 2008-09-01
WO2004111279A2 (en) 2004-12-23
DE10327383C5 (en) 2013-10-17
DE10327383A1 (en) 2005-02-10
RU2346061C2 (en) 2009-02-10
US20070175548A1 (en) 2007-08-02
JP2006527790A (en) 2006-12-07

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Legal Events

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MM4A Annulment or lapse of patent due to non-payment of fees