BR9811052A - Processo para produzir aço - Google Patents

Processo para produzir aço

Info

Publication number
BR9811052A
BR9811052A BR9811052-7A BR9811052A BR9811052A BR 9811052 A BR9811052 A BR 9811052A BR 9811052 A BR9811052 A BR 9811052A BR 9811052 A BR9811052 A BR 9811052A
Authority
BR
Brazil
Prior art keywords
temperature
plate
temperature range
austenite
hot rolling
Prior art date
Application number
BR9811052-7A
Other languages
English (en)
Inventor
Michael J Luton
Jayoung Koo
Narasimha-Rao V Bangaru
Clifford W Petersen
Hiroshi Tamehiro
Hitoshi Asahi
Takuya Hara
Massaki Sugiyama
Original Assignee
Exxonmobil Upstream Res Co
Nippon Steel 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 Exxonmobil Upstream Res Co, Nippon Steel Corp filed Critical Exxonmobil Upstream Res Co
Publication of BR9811052A publication Critical patent/BR9811052A/pt

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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • 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
    • 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
    • C21D2211/002—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
    • C21D2211/008—Martensite

Abstract

"PROCESSO PARA PRODUZIR AçO" é proporcionado um processo para a produção de um aço com resistência ultra-elevada possuindo uma resistência à tração de pelo menos aproximadamente 900 MPa, uma tenacidade conforme medida pelo teste de impacto de chanfro em V Charpy a -40°C de pelo menos aproximadamente 120 joules, e uma microestrutura compreendendo predominantemente bainita inferior de fina granulação, martensita em barrotes de fina granulação, ou misturas das mesmas, transformadas de grãos de austenita substancialmente não recristalizados, e compreendendo ferro e percentuais em peso especificados dos aditivos: carbono, silício, manganês, cobre, níquel, nióbio, vanádio, molibdênio, cromo, titânio, alumínio, cálcio, Metais de Terras Raras, e magnésio. Uma placa de aço é aquecida de até uma temperatura adequada; a placa é reduzida para formar uma chapa em um ou mais passes de laminação a quente em uma primeira faixa de temperatura na qual a austenita se recristaliza; a mencionada chapa é reduzida ainda mais em um ou mais passes de laminação a quente (10) em uma segunda faixa de temperatura abaixo da mencionada primeira faixa de temperatura e acima da temperatura na qual a austenita começa a se transformar em ferrita durante o resfriamento; a mencionada chapa é resfriada bruscamente (12) até uma Temperatura de Parada do Resfriamento Bruco (16) adequada; esse mencionado resfriamento bruco é interrompido e a mencionada chapa é permitida resfriar ao ar (18) até a temperatura ambiente.
BR9811052-7A 1997-07-28 1998-07-28 Processo para produzir aço BR9811052A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5396597P 1997-07-28 1997-07-28
PCT/US1998/015629 WO1999005328A1 (en) 1997-07-28 1998-07-28 Method for producing ultra-high strength, weldable steels with superior toughness

Publications (1)

Publication Number Publication Date
BR9811052A true BR9811052A (pt) 2000-08-15

Family

ID=21987788

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9811052-7A BR9811052A (pt) 1997-07-28 1998-07-28 Processo para produzir aço

Country Status (14)

Country Link
US (1) US6248191B1 (pt)
EP (1) EP1017862B1 (pt)
JP (1) JP4317321B2 (pt)
KR (1) KR100386767B1 (pt)
CN (1) CN1088474C (pt)
AT (1) ATE346960T1 (pt)
AU (1) AU736037B2 (pt)
BR (1) BR9811052A (pt)
CA (1) CA2295881C (pt)
DE (1) DE69836549T2 (pt)
ES (1) ES2275310T3 (pt)
RU (1) RU2210603C2 (pt)
UA (1) UA61966C2 (pt)
WO (1) WO1999005328A1 (pt)

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CN101418416B (zh) * 2007-10-26 2010-12-01 宝山钢铁股份有限公司 屈服强度800MPa级低焊接裂纹敏感性钢板及其制造方法
US10351922B2 (en) 2008-04-11 2019-07-16 Questek Innovations Llc Surface hardenable stainless steels
EP2265739B1 (en) 2008-04-11 2019-06-12 Questek Innovations LLC Martensitic stainless steel strengthened by copper-nucleated nitride precipitates
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KR101095911B1 (ko) 2011-09-29 2011-12-21 한국기계연구원 저온인성이 우수한 용접성 초고강도강
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TWI468530B (zh) * 2012-02-13 2015-01-11 新日鐵住金股份有限公司 冷軋鋼板、鍍敷鋼板、及其等之製造方法
CN102776438A (zh) * 2012-08-27 2012-11-14 内蒙古包钢钢联股份有限公司 一种铌镧微合金化Mn-B系超高强度钢板及其热处理工艺
RU2507297C1 (ru) * 2012-10-05 2014-02-20 Леонид Михайлович Клейнер Стали со структурой пакетного мартенсита
CN103060690A (zh) * 2013-01-22 2013-04-24 宝山钢铁股份有限公司 一种高强度钢板及其制造方法
US20160068937A1 (en) 2013-04-15 2016-03-10 Jfe Steel Corporation High-strength hot-rolled steel sheet and method for producing the same (as amended)
CN103352110B (zh) * 2013-06-19 2014-08-27 长沙天和钻具机械有限公司 一种中风压冲击钻头的加工工艺
RU2551324C1 (ru) * 2013-12-30 2015-05-20 Публичное акционерное общество "Северсталь" (ПАО "Северсталь") Способ производства полос из низколегированной свариваемой стали
CN104513937A (zh) * 2014-12-19 2015-04-15 宝山钢铁股份有限公司 一种屈服强度800MPa级别高强钢及其生产方法
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Also Published As

Publication number Publication date
ATE346960T1 (de) 2006-12-15
CA2295881A1 (en) 1999-02-04
CN1265708A (zh) 2000-09-06
JP2001511479A (ja) 2001-08-14
DE69836549T2 (de) 2007-09-13
ES2275310T3 (es) 2007-06-01
KR20010022349A (ko) 2001-03-15
US6248191B1 (en) 2001-06-19
EP1017862A1 (en) 2000-07-12
EP1017862A4 (en) 2004-06-23
RU2210603C2 (ru) 2003-08-20
AU8667398A (en) 1999-02-16
EP1017862B1 (en) 2006-11-29
CA2295881C (en) 2005-10-18
JP4317321B2 (ja) 2009-08-19
AU736037B2 (en) 2001-07-26
WO1999005328A1 (en) 1999-02-04
DE69836549D1 (de) 2007-01-11
UA61966C2 (en) 2003-12-15
KR100386767B1 (ko) 2003-06-09
CN1088474C (zh) 2002-07-31

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

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