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
Authority: EP; European Patent Office
Prior art keywords: stainless steel; ferritic stainless; grain structures; equiaxed grain; manufacturing
Prior art date: 2005-12-28
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn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.)

2005-12-28

Filing date

2006-11-09

Publication date

2010-07-21

2006-11-09 Application filed by Posco Co Ltd filed Critical Posco Co Ltd

2008-10-01 Publication of EP1974063A1 publication Critical patent/EP1974063A1/en

2010-07-21 Publication of EP1974063A4 publication Critical patent/EP1974063A4/en

Status Withdrawn legal-status Critical Current

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	Ferritic stainless steel manufacturing method with fine coagulation structure and ferritic stainless steel produced thereby
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	Refining Method of Titanium-Added High Chrome Stainless Steel
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
WO2012060397A1 (en)	2010-11-05	2012-05-10	国立大学法人九州大学	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
CN107709536B (en) *	2015-04-17	2021-08-27	密苏里大学管理者	Grain refinement 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 process method for improving equiaxed crystallinity of bistable ferritic stainless steel continuous casting billet
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	Melting method and continuous cast slab of ultra-low carbon or low carbon thin steel sheet with excellent surface quality

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
DK1637785T3 (en) *	2004-09-15	2010-08-16	Sumitomo Metal Ind	Steel pipes with excellent exfoliation resistance to peel on the inner surface

2005
- 2005-12-28 KR KR1020050131297A patent/KR100729934B1/en active IP Right Grant
2006
- 2006-11-09 EP EP06812508A patent/EP1974063A4/en not_active Withdrawn
- 2006-11-09 US US12/158,515 patent/US20090223603A1/en not_active Abandoned
- 2006-11-09 WO PCT/KR2006/004673 patent/WO2007074970A1/en active Application Filing
- 2006-11-09 CN CN2006800497022A patent/CN101351565B/en not_active Expired - Fee Related
- 2006-11-09 JP JP2008548373A patent/JP5221379B2/en not_active Expired - Fee Related

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	Melting method and continuous cast slab of ultra-low carbon or low carbon thin steel sheet with excellent surface quality

Non-Patent Citations (1)

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

Also Published As

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

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Legal Events

Date	Code	Title	Description
2008-08-29	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
2008-10-01	17P	Request for examination filed	Effective date: 20080618
2008-10-01	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): DE ES FR
2008-11-26	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
2009-02-18	DAX	Request for extension of the european patent (deleted)
2009-02-18	RBV	Designated contracting states (corrected)	Designated state(s): DE ES FR
2010-07-21	A4	Supplementary search report drawn up and despatched	Effective date: 20100623
2010-07-21	RIC1	Information provided on ipc code assigned before grant	Ipc: C21C 5/52 20060101AFI20070821BHEP Ipc: C21C 7/00 20060101ALI20100617BHEP Ipc: C21C 7/068 20060101ALI20100617BHEP
2012-10-19	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN
2012-11-21	18D	Application deemed to be withdrawn	Effective date: 20120601