BRPI0406423A - Aço inoxidável duplex e seu método de produção - Google Patents

Aço inoxidável duplex e seu método de produção

Info

Publication number
BRPI0406423A
BRPI0406423A BR0406423-2A BRPI0406423A BRPI0406423A BR PI0406423 A BRPI0406423 A BR PI0406423A BR PI0406423 A BRPI0406423 A BR PI0406423A BR PI0406423 A BRPI0406423 A BR PI0406423A
Authority
BR
Brazil
Prior art keywords
stainless steel
duplex stainless
production method
less
oxide
Prior art date
Application number
BR0406423-2A
Other languages
English (en)
Inventor
Tomohiko Omura
Satoshi Matsumoto
Original Assignee
Sumitomo Metal Ind
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 Sumitomo Metal Ind filed Critical Sumitomo Metal Ind
Publication of BRPI0406423A publication Critical patent/BRPI0406423A/pt
Publication of BRPI0406423B1 publication Critical patent/BRPI0406423B1/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/064—Dephosphorising; Desulfurising
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/06—Deoxidising, e.g. killing
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/18—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
    • 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
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Steel (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

"AçO INOXIDáVEL DUPLEX E SEU MéTODO DE PRODUçãO". A presente invenção refere-se a um aço inoxidável duplex contendo C, Si, Mn, P, S, Al, Ni, Cr, Mo, N (nitrogênio), O (oxigênio), Ca, Mg, Cu, B, e W, e o saldo sendo Fe e impurezas, onde um número de inclusões com base óxida, que têm um teor total de Ca e de Mg de 20 a 40% em massa e também têm um diâmetro longo de não menos que 7 <109>m, é de não mais que 10 por 1 mm¬ 2¬ da seção transversal perpendicular à direção de trabalho, ou também o número de inclusões com base óxida que têm um teor de S de não menos que 15% em massa e também têm um diâmetro longo de não menos que 1 <109>m é de não mais que 10 por 0,1 mm¬ 2¬ da seção transversal perpendicular à direção de trabalho. Particularmente os teores de Cu B e W são desejavelmente 0,2 a 2%, 0,001 a 0,01% e 0,1 a 4% em massa respectivamente.
BRPI0406423-2A 2003-08-07 2004-08-03 aço inoxidável duplex e seu método de produção. BRPI0406423B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2003289418 2003-08-07
JP2003-289418 2003-08-07
PCT/JP2004/011070 WO2005014872A1 (ja) 2003-08-07 2004-08-03 二相ステンレス鋼およびその製造方法

Publications (2)

Publication Number Publication Date
BRPI0406423A true BRPI0406423A (pt) 2005-10-04
BRPI0406423B1 BRPI0406423B1 (pt) 2012-12-11

Family

ID=34131558

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0406423-2A BRPI0406423B1 (pt) 2003-08-07 2004-08-03 aço inoxidável duplex e seu método de produção.

Country Status (8)

Country Link
EP (1) EP1561834B1 (pt)
JP (1) JP4155300B2 (pt)
KR (1) KR100661328B1 (pt)
CN (1) CN100427627C (pt)
AU (1) AU2004262702B2 (pt)
BR (1) BRPI0406423B1 (pt)
NO (1) NO336117B1 (pt)
WO (1) WO2005014872A1 (pt)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7662885B2 (en) 2002-08-12 2010-02-16 Exxonmobil Chemical Patents Inc. Method to make an article comprising polymer concentrate
US8192813B2 (en) 2003-08-12 2012-06-05 Exxonmobil Chemical Patents, Inc. Crosslinked polyethylene articles and processes to produce same
CN102031461A (zh) * 2010-10-22 2011-04-27 重庆仪表材料研究所 一种高屈强比高韧性长期弹性稳定性耐热合金
US9862168B2 (en) 2011-01-27 2018-01-09 Nippon Steel & Sumikin Stainless Steel Corporation Alloying element-saving hot rolled duplex stainless steel material, clad steel plate having duplex stainless steel as cladding material therefor, and production method for same
WO2012121232A1 (ja) * 2011-03-10 2012-09-13 住友金属工業株式会社 二相ステンレス鋼
FI126574B (fi) * 2011-09-07 2017-02-28 Outokumpu Oy Dupleksinen ruostumaton teräs
US20150354038A1 (en) 2013-01-15 2015-12-10 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Duplex stainless steel material and duplex stainless steel pipe
JP6302793B2 (ja) * 2013-09-11 2018-03-28 株式会社神戸製鋼所 二相ステンレス鋼材および二相ステンレス鋼管
JP6200851B2 (ja) * 2013-11-05 2017-09-20 株式会社神戸製鋼所 二相ステンレス鋼材および二相ステンレス鋼管
FI125466B (en) * 2014-02-03 2015-10-15 Outokumpu Oy DOUBLE STAINLESS STEEL
FI126577B (en) 2014-06-17 2017-02-28 Outokumpu Oy DUPLEX STAINLESS STEEL
JP6303851B2 (ja) * 2014-06-18 2018-04-04 新日鐵住金株式会社 二相ステンレス鋼管
KR101668534B1 (ko) * 2014-12-26 2016-10-24 주식회사 포스코 수퍼 듀플렉스 스테인레스강 및 그 제조 방법
PL3333275T3 (pl) * 2016-12-07 2021-05-17 Höganäs Ab (Publ) Sproszkowana stal nierdzewna do produkcji spiekanych dupleksowych stali nierdzewnych
CN111349847B (zh) * 2018-12-24 2022-03-18 宝山钢铁股份有限公司 一种耐海水腐蚀钢及其制造方法
CN115244199B (zh) * 2020-02-27 2023-10-20 日铁不锈钢株式会社 不锈钢、不锈钢钢材及不锈钢的制造方法
US12553115B2 (en) 2020-02-27 2026-02-17 Nippon Steel Stainless Steel Corporation Stainless steel with good mirror polishability and method for producing same
EP4137590B1 (en) 2020-06-02 2026-01-21 JFE Steel Corporation Dual-phase stainless steel and dual-phase stainless steel seamless pipe
EP4411002A4 (en) * 2021-10-01 2025-10-22 Nippon Steel Corp Duplex stainless steel pipe

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2500162B2 (ja) * 1991-11-11 1996-05-29 住友金属工業株式会社 耐食性に優れた高強度二相ステンレス鋼
JPH07197205A (ja) * 1993-12-29 1995-08-01 Nkk Corp オーステナイト系ステンレス鋼薄板及びその製造方法
JP3446294B2 (ja) * 1994-04-05 2003-09-16 住友金属工業株式会社 二相ステンレス鋼
ATE195559T1 (de) * 1994-05-21 2000-09-15 Park Yong S Rostfreies duplex-stahl mit guter korrosionsbeständigkeit
JPH08170153A (ja) * 1994-12-19 1996-07-02 Sumitomo Metal Ind Ltd 高耐食性２相ステンレス鋼
JP3127822B2 (ja) * 1996-04-10 2001-01-29 住友金属工業株式会社 二相ステンレス鋼製継目無鋼管の製造方法
JPH1060598A (ja) * 1996-08-19 1998-03-03 Nkk Corp 耐海水性用析出強化型二相ステンレス鋼
JPH1060526A (ja) * 1996-08-19 1998-03-03 Nkk Corp 耐海水性用析出強化型二相ステンレス鋼の製造方法
JP3624732B2 (ja) * 1998-01-30 2005-03-02 住友金属工業株式会社 成形性に優れたフェライト系ステンレス鋼及びフェライト系ステンレス鋼鋳片
JP3964537B2 (ja) * 1998-04-08 2007-08-22 大平洋金属株式会社 熱間加工性に優れたオーステナイト系ステンレス鋼
JP3446667B2 (ja) * 1999-07-07 2003-09-16 住友金属工業株式会社 加工性と靱性に優れたフェライト系ステンレス鋼、フェライト系ステンレス鋼鋼塊及びその製造方法
JP3534032B2 (ja) * 2000-02-03 2004-06-07 住友金属工業株式会社 ２相ステンレス鋼製鋼管の製造方法
JP2002194505A (ja) * 2000-12-22 2002-07-10 Sumitomo Metal Ind Ltd フェライト系ステンレス鋼およびその製造方法
JP3758508B2 (ja) * 2001-02-13 2006-03-22 住友金属工業株式会社 二相ステンレス鋼管の製造方法
JP3939534B2 (ja) * 2001-11-08 2007-07-04 新日鐵住金ステンレス株式会社 ２相ステンレス鋼板およびその製造方法
US20050016636A1 (en) * 2001-11-22 2005-01-27 Yutaka Kobayashi Stainless steel for use under circumstance where organic acid and saline are present
JP4080729B2 (ja) * 2001-11-22 2008-04-23 日本冶金工業株式会社 食品プラント用ステンレス鋼

Also Published As

Publication number Publication date
EP1561834B1 (en) 2011-04-20
NO20052266L (no) 2005-07-06
JP4155300B2 (ja) 2008-09-24
BRPI0406423B1 (pt) 2012-12-11
AU2004262702A1 (en) 2005-02-17
NO20052266D0 (no) 2005-05-10
EP1561834A4 (en) 2007-07-11
CN100427627C (zh) 2008-10-22
JPWO2005014872A1 (ja) 2006-10-05
KR100661328B1 (ko) 2006-12-27
WO2005014872A1 (ja) 2005-02-17
KR20060024316A (ko) 2006-03-16
EP1561834A1 (en) 2005-08-10
AU2004262702B2 (en) 2007-05-03
CN1701126A (zh) 2005-11-23
NO336117B1 (no) 2015-05-18

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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 03/08/2004, OBSERVADAS AS DEMAIS CONDICOES LEGAIS.

B25A Requested transfer of rights approved
B25D Requested change of name of applicant approved
B25D Requested change of name of applicant approved
B25K Entry of change of name and/or headquarter and transfer of application, patent and certificate of addition of invention: republication

Free format text: RETIFICADO O DESPACHO 25.4 PUBLICADO NA RPI 2543 DE 01/10/2019. ONDE SE LE: ?(?), SENDO ESTA PUBLICADA NA RPI NO 2542, DE 24/09/2019? LEIA-SE: ?(?), SENDO ESTA PUBLICADA NA RPI NO 2543, DE 01/10/2019?

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 18A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2681 DE 24-05-2022 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.