EP1974063A4 - Method for manufacturing ferritic stainless steel slabs with equiaxed grain structures and the ferritic stainless steel manufactured by it - Google Patents

Method for manufacturing ferritic stainless steel slabs with equiaxed grain structures and the ferritic stainless steel manufactured by it

Info

Publication number
EP1974063A4
EP1974063A4 EP06812508A EP06812508A EP1974063A4 EP 1974063 A4 EP1974063 A4 EP 1974063A4 EP 06812508 A EP06812508 A EP 06812508A EP 06812508 A EP06812508 A EP 06812508A EP 1974063 A4 EP1974063 A4 EP 1974063A4
Authority
EP
European Patent Office
Prior art keywords
stainless steel
ferritic stainless
grain structures
equiaxed grain
manufacturing
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.)
Withdrawn
Application number
EP06812508A
Other languages
German (de)
French (fr)
Other versions
EP1974063A1 (en
Inventor
Hyo Seok Song
Joo Hyun Park
Hee Ho Lee
Kyo Soo Lee
Dong Sik Kim
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.)
Posco Holdings Inc
Original Assignee
Posco Co Ltd
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 Posco Co Ltd filed Critical Posco Co Ltd
Publication of EP1974063A1 publication Critical patent/EP1974063A1/en
Publication of EP1974063A4 publication Critical patent/EP1974063A4/en
Withdrawn legal-status Critical Current

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
    • C21C7/068—Decarburising
    • C21C7/0685—Decarburising of stainless steel
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • 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
    • 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
    • C21C7/0006—Adding metallic additives
    • 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
    • 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
    • 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
    • C21C7/10—Handling in a vacuum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Continuous Casting (AREA)
EP06812508A 2005-12-28 2006-11-09 Method for manufacturing ferritic stainless steel slabs with equiaxed grain structures and the ferritic stainless steel manufactured by it Withdrawn EP1974063A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020050131297A KR100729934B1 (en) 2005-12-28 2005-12-28 Method for manufacturing ferritic stainless steel slabs with equiaxed grain structures and the ferritic stainless steel manufactured by it
PCT/KR2006/004673 WO2007074970A1 (en) 2005-12-28 2006-11-09 Method for manufacturing ferritic stainless steel slabs with equiaxed grain structures and the ferritic stainless steel manufactured by it

Publications (2)

Publication Number Publication Date
EP1974063A1 EP1974063A1 (en) 2008-10-01
EP1974063A4 true EP1974063A4 (en) 2010-07-21

Family

ID=38218177

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06812508A Withdrawn EP1974063A4 (en) 2005-12-28 2006-11-09 Method for manufacturing ferritic stainless steel slabs with equiaxed grain structures and the ferritic stainless steel manufactured by it

Country Status (6)

Country Link
US (1) US20090223603A1 (en)
EP (1) EP1974063A4 (en)
JP (1) JP5221379B2 (en)
KR (1) KR100729934B1 (en)
CN (1) CN101351565B (en)
WO (1) WO2007074970A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2047926A1 (en) * 2007-10-10 2009-04-15 Ugine & Alz France Method of manufacturing stainless steels comprising fine carbonitrides, and product obtained from this method
KR100922059B1 (en) * 2007-12-20 2009-10-16 주식회사 포스코 Method for manufacturing high chrome stainless steel including titannium
CN102199688B (en) * 2010-03-25 2013-02-06 宝山钢铁股份有限公司 Method for efficiently refining ultra-pure ferritic stainless steel
TWI412597B (en) * 2010-05-28 2013-10-21 China Steel Corp Bearing steel refining method for improving fatigue life
CA2819997C (en) 2010-11-05 2019-06-25 Kyushu University Preventive or therapeutic agent for pain associated with herpes zoster in acute phase
KR101198589B1 (en) 2010-12-27 2012-11-06 주식회사 포스코 Method of refining of high Cr ferrite stainless steel and refining apparatus thereby
JP5687590B2 (en) * 2011-09-27 2015-03-18 日本冶金工業株式会社 Method for producing boron-containing stainless steel
JP6306353B2 (en) * 2014-01-21 2018-04-04 Ｊｆｅスチール株式会社 Method for producing slab for ferritic stainless steel cold rolled steel sheet and method for producing ferritic stainless steel cold rolled steel sheet
DK3283608T3 (en) * 2015-04-17 2020-11-23 Univ Missouri Grain refining in iron-based materials
KR101898165B1 (en) * 2016-12-06 2018-09-13 주식회사 포스코 Method for manufacturing ferritic stainless steel having fine cast structure
KR101896340B1 (en) * 2017-06-01 2018-09-07 주식회사 포스코 Molten steel manufacturing method
CN107574385B (en) * 2017-08-28 2019-07-12 北京科技大学 A kind of process improving bistable ferrite stainless steel continuous casting billet equiaxial crystal ratio
CN113502376A (en) * 2021-06-18 2021-10-15 鞍钢联众(广州)不锈钢有限公司 Method for improving secondary skin inclusion of titanium-containing stainless steel billet

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0924313A1 (en) * 1997-12-19 1999-06-23 Armco Inc. Non-ridging ferritic chromium alloyed steel
JP2000073146A (en) * 1998-08-27 2000-03-07 Nisshin Steel Co Ltd Ferritic stainless steel excellent in ridging resistance
JP2000160230A (en) * 1998-11-20 2000-06-13 Nisshin Steel Co Ltd Production of ferritic stainless steel excellent in ridging resistance
EP1099498A1 (en) * 1999-04-08 2001-05-16 Nippon Steel Corporation Cast steel piece and steel product excellent in forming characteristics and method for treatment of molted steel therefor and method for production thereof
JP2004143510A (en) * 2002-10-23 2004-05-20 Nippon Steel Corp Method for melting steel sheet for extra low carbon or low carbon thin sheet having excellent surface quality, and continuously cast slab

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0949010A (en) * 1995-08-09 1997-02-18 Nisshin Steel Co Ltd Production of continuous casting ferritic stainless steel slab having high equi-axial crystal ratio
JP3288626B2 (en) * 1997-03-21 2002-06-04 新日本製鐵株式会社 High workability ferritic stainless steel sheet excellent in ridging characteristics and method for producing the same
JP2001049322A (en) * 1999-08-05 2001-02-20 Nisshin Steel Co Ltd Production of ferritic stainless steel excellent in ridging resistance
JP3668087B2 (en) * 2000-02-03 2005-07-06 日本冶金工業株式会社 High-cleaning refining method for stainless steel
KR100355369B1 (en) * 2000-06-07 2002-10-11 고려용접봉 주식회사 Flux cored wire for arc-welding of austenitic stainless steel
JP3624804B2 (en) * 2000-07-14 2005-03-02 住友金属工業株式会社 Method for producing ridging resistant ferritic stainless steel
DE602005021286D1 (en) * 2004-09-15 2010-07-01 Sumitomo Metal Ind Steel pipe with excellent resistance to flaking on the inner surface

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0924313A1 (en) * 1997-12-19 1999-06-23 Armco Inc. Non-ridging ferritic chromium alloyed steel
JP2000073146A (en) * 1998-08-27 2000-03-07 Nisshin Steel Co Ltd Ferritic stainless steel excellent in ridging resistance
JP2000160230A (en) * 1998-11-20 2000-06-13 Nisshin Steel Co Ltd Production of ferritic stainless steel excellent in ridging resistance
EP1099498A1 (en) * 1999-04-08 2001-05-16 Nippon Steel Corporation Cast steel piece and steel product excellent in forming characteristics and method for treatment of molted steel therefor and method for production thereof
JP2004143510A (en) * 2002-10-23 2004-05-20 Nippon Steel Corp Method for melting steel sheet for extra low carbon or low carbon thin sheet having excellent surface quality, and continuously cast slab

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2007074970A1 *

Also Published As

Publication number Publication date
WO2007074970A1 (en) 2007-07-05
US20090223603A1 (en) 2009-09-10
CN101351565A (en) 2009-01-21
KR100729934B1 (en) 2007-06-18
JP5221379B2 (en) 2013-06-26
EP1974063A1 (en) 2008-10-01
CN101351565B (en) 2011-02-02
JP2009521599A (en) 2009-06-04

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 20080618

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KIM, DONG SIKC/O POSCO

Inventor name: SONG, HYO SEOKC/O POSCO

Inventor name: PARK, JOO HYUNC/O POSCO

Inventor name: LEE, HEE HOC/O POSCO

Inventor name: LEE, KYO SOOC/O POSCO

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE ES FR

A4 Supplementary search report drawn up and despatched

Effective date: 20100623

RIC1 Information provided on ipc code assigned before grant

Ipc: C21C 5/52 20060101AFI20070821BHEP

Ipc: C21C 7/00 20060101ALI20100617BHEP

Ipc: C21C 7/068 20060101ALI20100617BHEP

STAA Information on the status of an ep patent application or granted ep patent

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Effective date: 20120601