EP2246450A4 - Steel sheets and process for manufacturing the same - Google Patents

Steel sheets and process for manufacturing the same

Info

Publication number: EP2246450A4
Authority: EP; European Patent Office
Prior art keywords: manufacturing; same; steel sheets; sheets; steel
Prior art date: 2007-12-19
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.): Granted

Application number

EP08861016A

Other languages

German (de)

French (fr)

Other versions

EP2246450A1 (en

EP2246450B1 (en

Inventor

Nobusuke Kariya

Kazuhiro Seto

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.)

JFE Steel Corp

Original Assignee

JFE 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.)

2007-12-19

Filing date

2008-11-20

Publication date

2012-01-25

2007-12-19 Priority claimed from JP2007326868A external-priority patent/JP5157416B2/en

2007-12-19 Priority claimed from JP2007326869A external-priority patent/JP5157417B2/en

2008-11-20 Application filed by JFE Steel Corp filed Critical JFE Steel Corp

2010-11-03 Publication of EP2246450A1 publication Critical patent/EP2246450A1/en

2012-01-25 Publication of EP2246450A4 publication Critical patent/EP2246450A4/en

2013-09-04 Application granted granted Critical

2013-09-04 Publication of EP2246450B1 publication Critical patent/EP2246450B1/en

Status Not-in-force legal-status Critical Current

2028-11-20 Anticipated expiration legal-status Critical

Classifications

- 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
- 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
- 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
- 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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following 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
- 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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0273—Final recrystallisation annealing
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
- 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
- C21D2211/003—Cementite
- 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
- C21D2211/006—Graphite

Landscapes

Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Mechanical Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Physics & Mathematics (AREA)
Thermal Sciences (AREA)
Crystallography & Structural Chemistry (AREA)
Heat Treatment Of Sheet Steel (AREA)

EP08861016.7A 2007-12-19 2008-11-20 Steel sheets and process for manufacturing the same Not-in-force EP2246450B1 (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
JP2007326868A JP5157416B2 (en)	2007-12-19	2007-12-19	Steel sheet and manufacturing method thereof
JP2007326869A JP5157417B2 (en)	2007-12-19	2007-12-19	Steel sheet and manufacturing method thereof
PCT/JP2008/071597 WO2009078261A1 (en)	2007-12-19	2008-11-20	Steel sheets and process for manufacturing the same

Publications (3)

Publication Number	Publication Date
EP2246450A1 EP2246450A1 (en)	2010-11-03
EP2246450A4 true EP2246450A4 (en)	2012-01-25
EP2246450B1 EP2246450B1 (en)	2013-09-04

Family

ID=40795380

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP08861016.7A Not-in-force EP2246450B1 (en)	2007-12-19	2008-11-20	Steel sheets and process for manufacturing the same

Country Status (4)

Country	Link
EP (1)	EP2246450B1 (en)
KR (2)	KR20130035276A (en)
CN (1)	CN101903547B (en)
WO (1)	WO2009078261A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN101906597A (en) *	2010-08-14	2010-12-08	武汉钢铁(集团)公司	Environment-friendly high-performance graphitized free cutting steel
JP5594226B2 (en) *	2011-05-18	2014-09-24	Ｊｆｅスチール株式会社	High carbon steel sheet and method for producing the same
JP5338873B2 (en) *	2011-08-05	2013-11-13	Ｊｆｅスチール株式会社	High-strength hot-dip galvanized steel sheet excellent in workability with a tensile strength of 440 MPa or more and its production method
WO2013102982A1 (en) *	2012-01-05	2013-07-11	Ｊｆｅスチール株式会社	High carbon hot-rolled steel sheet with excellent hardenability and minimal in-plane anisotropy, and method for producing same
JP6479538B2 (en) *	2015-03-31	2019-03-06	株式会社神戸製鋼所	Steel wire for machine structural parts
CN106048179B (en) *	2016-07-15	2017-09-15	北京科技大学	A kind of preparation method of graphitization hot rolled steel plate
CN113862609B (en) *	2021-09-03	2022-05-27	北京科技大学	Method for improving wear resistance and friction reduction of medium and low carbon steel workpieces by carburizing and surface graphitization

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH08246051A (en) *	1995-03-07	1996-09-24	Sumitomo Metal Ind Ltd	Method for producing medium carbon steel sheet with excellent workability
JPH08291362A (en) *	1995-04-21	1996-11-05	Sumitomo Metal Ind Ltd	Steel with excellent cold workability
JPH1180884A (en) *	1997-09-08	1999-03-26	Nisshin Steel Co Ltd	Medium-or high-carbon steel sheet excellent in local ductility and hardenabiltiy
JP2003073742A (en) *	2001-08-31	2003-03-12	Nkk Corp	Manufacturing method of high-quenching high-carbon hot-rolled steel sheet
WO2007000955A1 (en) *	2005-06-29	2007-01-04	Jfe Steel Corporation	High-carbon hot-rolled steel sheet and process for producing the same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0830241B2 (en)	1987-07-20	1996-03-27	川崎製鉄株式会社	Steel sheet having excellent workability and toughness and good hardenability, and a method for producing the same
JPH02107742A (en) *	1988-10-14	1990-04-19	Kawasaki Steel Corp	Steel stock excellent in workability and hardenability
JPH04124216A (en) *	1990-09-12	1992-04-24	Sumitomo Metal Ind Ltd	Production of high carbon steel sheet having superior formability
JPH04202744A (en)	1990-11-30	1992-07-23	Sumitomo Metal Ind Ltd	High carbon thin steel sheet with good formability and its manufacturing method
JPH0913142A (en) *	1991-01-17	1997-01-14	Kawasaki Steel Corp	Graphite-precipitated hot-rolled steel sheet with excellent bending workability and heat treatment property, and method for producing the same
JP3241748B2 (en) *	1991-04-11	2001-12-25	川崎製鉄株式会社	Steel material excellent in workability and hardenability and its manufacturing method
JPH06323399A (en) *	1992-06-30	1994-11-25	Sumitomo Metal Ind Ltd	Automotive gear and manufacturing method thereof
JPH07258743A (en)	1994-03-18	1995-10-09	Sumitomo Metal Ind Ltd	Method for producing medium carbon steel sheet with excellent workability
JP5011846B2 (en) *	2005-06-29	2012-08-29	Ｊｆｅスチール株式会社	High carbon hot rolled steel sheet and manufacturing method thereof

2008
- 2008-11-20 CN CN2008801214570A patent/CN101903547B/en not_active Expired - Fee Related
- 2008-11-20 KR KR1020137005432A patent/KR20130035276A/en not_active Ceased
- 2008-11-20 EP EP08861016.7A patent/EP2246450B1/en not_active Not-in-force
- 2008-11-20 WO PCT/JP2008/071597 patent/WO2009078261A1/en not_active Ceased
- 2008-11-20 KR KR1020107013257A patent/KR20100076073A/en not_active Ceased

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH08246051A (en) *	1995-03-07	1996-09-24	Sumitomo Metal Ind Ltd	Method for producing medium carbon steel sheet with excellent workability
JPH08291362A (en) *	1995-04-21	1996-11-05	Sumitomo Metal Ind Ltd	Steel with excellent cold workability
JPH1180884A (en) *	1997-09-08	1999-03-26	Nisshin Steel Co Ltd	Medium-or high-carbon steel sheet excellent in local ductility and hardenabiltiy
JP2003073742A (en) *	2001-08-31	2003-03-12	Nkk Corp	Manufacturing method of high-quenching high-carbon hot-rolled steel sheet
WO2007000955A1 (en) *	2005-06-29	2007-01-04	Jfe Steel Corporation	High-carbon hot-rolled steel sheet and process for producing the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2009078261A1 *

Also Published As

Publication number	Publication date
KR20130035276A (en)	2013-04-08
WO2009078261A1 (en)	2009-06-25
EP2246450A1 (en)	2010-11-03
KR20100076073A (en)	2010-07-05
EP2246450B1 (en)	2013-09-04
CN101903547B (en)	2012-05-23
CN101903547A (en)	2010-12-01

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Legal Events

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2010-11-03	AX	Request for extension of the european patent	Extension state: AL BA MK RS
2011-03-30	DAX	Request for extension of the european patent (deleted)
2012-01-25	A4	Supplementary search report drawn up and despatched	Effective date: 20111227
2012-01-25	RIC1	Information provided on ipc code assigned before grant	Ipc: C22C 38/00 20060101AFI20111220BHEP Ipc: C21D 9/46 20060101ALI20111220BHEP Ipc: B21B 3/00 20060101ALI20111220BHEP Ipc: C22C 38/06 20060101ALI20111220BHEP Ipc: C22C 38/16 20060101ALI20111220BHEP
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