WO2010074544A3 - Surface decarburization-restrained steel and manufacturing method thereof - Google Patents

Surface decarburization-restrained steel and manufacturing method thereof Download PDF

Info

Publication number
WO2010074544A3
WO2010074544A3 PCT/KR2009/007846 KR2009007846W WO2010074544A3 WO 2010074544 A3 WO2010074544 A3 WO 2010074544A3 KR 2009007846 W KR2009007846 W KR 2009007846W WO 2010074544 A3 WO2010074544 A3 WO 2010074544A3
Authority
WO
WIPO (PCT)
Prior art keywords
steel
manufacturing
decarburization
boron
restrained
Prior art date
Application number
PCT/KR2009/007846
Other languages
French (fr)
Other versions
WO2010074544A2 (en
Inventor
Jae-Seung Lee
Sang-Yoon Lee
Hoe-Young Jung
Byoung-Ju Park
Original Assignee
Posco
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 filed Critical Posco
Priority to CN200980152839.4A priority Critical patent/CN102264935B/en
Priority to JP2011543439A priority patent/JP5581335B2/en
Priority to EP09835310.5A priority patent/EP2376666A4/en
Priority to US13/141,099 priority patent/US20110247734A1/en
Publication of WO2010074544A2 publication Critical patent/WO2010074544A2/en
Publication of WO2010074544A3 publication Critical patent/WO2010074544A3/en

Links

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
    • C22C38/02—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
    • C22C38/001—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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • 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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

Decarburization-restrained steel and manufacturing method thereof are disclosed. Steel includes a boron (B)-concentrated layer formed on its surface to prevent carbon of the steel from being in contact with oxygen in atmosphere to thus restrain decarburization of the steel. The steel includes a boron-concentrated layer with a thickness of 3mm or larger formed on the surface of the steel. The method of manufacturing decarburization-restrained steel includes cooling steel containing 0.001 wt% to 0.02 wt% of boron (B) at a cooling speed of 0.5℃/s to 25℃/s at an austenite + ferrite two-phase region.
PCT/KR2009/007846 2008-12-26 2009-12-28 Surface decarburization-restrained steel and manufacturing method thereof WO2010074544A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN200980152839.4A CN102264935B (en) 2008-12-26 2009-12-28 Surface decarburization-restrained steel and manufacturing method thereof
JP2011543439A JP5581335B2 (en) 2008-12-26 2009-12-28 Steel material with suppressed surface decarburization and manufacturing method thereof
EP09835310.5A EP2376666A4 (en) 2008-12-26 2009-12-28 Surface decarburization-restrained steel and manufacturing method thereof
US13/141,099 US20110247734A1 (en) 2008-12-26 2009-12-28 Surface Decarburization-Restrained Steel and Manufacturing Method Thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2008-0134348 2008-12-26
KR1020080134348A KR101115761B1 (en) 2008-12-26 2008-12-26 Steel restrained from surface decarborization and manufacturing method for the same

Publications (2)

Publication Number Publication Date
WO2010074544A2 WO2010074544A2 (en) 2010-07-01
WO2010074544A3 true WO2010074544A3 (en) 2010-09-23

Family

ID=42288331

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/007846 WO2010074544A2 (en) 2008-12-26 2009-12-28 Surface decarburization-restrained steel and manufacturing method thereof

Country Status (6)

Country Link
US (1) US20110247734A1 (en)
EP (1) EP2376666A4 (en)
JP (1) JP5581335B2 (en)
KR (1) KR101115761B1 (en)
CN (1) CN102264935B (en)
WO (1) WO2010074544A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102221352A (en) * 2011-03-21 2011-10-19 哈尔滨飞机工业集团有限责任公司 Method for measuring depth of alloy steel decarbonized layer
CN107779751B (en) * 2017-10-31 2020-08-11 攀钢集团攀枝花钢铁研究院有限公司 Corrosion-resistant steel rail for high-speed railway and production method thereof
KR102326047B1 (en) * 2019-12-20 2021-11-15 주식회사 포스코 B-containing steel wire rod with excellent hardenability and corrosion resistance and manufacturing method of the same
WO2023190867A1 (en) * 2022-03-30 2023-10-05 日本製鉄株式会社 Steel member and steel sheet

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4436561A (en) * 1980-07-05 1984-03-13 Nippon Steel Corporation Press-formable high strength dual phase structure cold rolled steel sheet and process for producing the same
JPH08176737A (en) * 1994-12-21 1996-07-09 Mitsubishi Steel Mfg Co Ltd Low decarburizing spring steel
JP2007009300A (en) * 2005-07-01 2007-01-18 Daido Steel Co Ltd Method for manufacturing cold-coiled wire rod for spring
KR20070068665A (en) * 2005-12-27 2007-07-02 주식회사 포스코 High-strength steel part having excellent resistance for delayed fracture and method for producing the same
JP2008133539A (en) * 2006-10-31 2008-06-12 Kobe Steel Ltd Hard drawn spring steel wire superior in fatigue characteristic and wire drawing property

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03197642A (en) * 1989-12-26 1991-08-29 Kawasaki Steel Corp Steel sheet for working having excellent slidability
JPH03232953A (en) * 1990-02-09 1991-10-16 Kawasaki Steel Corp Zinc-series coated steel sheet for working excellent in spot weldability
JPH07286254A (en) * 1994-04-21 1995-10-31 Sumitomo Metal Ind Ltd Steel sheet excellent in secondary working brittleness resistance and its production
US6503344B2 (en) * 1999-02-05 2003-01-07 Houghton Durferrit Gmbh Boronizing agent in paste form
JP4012475B2 (en) * 2003-02-21 2007-11-21 新日本製鐵株式会社 Machine structural steel excellent in cold workability and low decarburization and method for producing the same
JP4681290B2 (en) * 2004-12-03 2011-05-11 本田技研工業株式会社 High strength steel plate and manufacturing method thereof
EP1715140A1 (en) * 2005-04-21 2006-10-25 Siemens Aktiengesellschaft Turbine blade with a cover plate and a protective layer on the cover plate
WO2006118243A1 (en) * 2005-04-28 2006-11-09 Aisin Aw Co., Ltd. Carburized induction-hardened component
JP4473786B2 (en) * 2005-06-08 2010-06-02 株式会社神戸製鋼所 High strength steel with excellent delayed fracture resistance
JP4847988B2 (en) * 2007-07-20 2011-12-28 株式会社神戸製鋼所 Spring wire with excellent corrosion fatigue characteristics

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4436561A (en) * 1980-07-05 1984-03-13 Nippon Steel Corporation Press-formable high strength dual phase structure cold rolled steel sheet and process for producing the same
JPH08176737A (en) * 1994-12-21 1996-07-09 Mitsubishi Steel Mfg Co Ltd Low decarburizing spring steel
JP2007009300A (en) * 2005-07-01 2007-01-18 Daido Steel Co Ltd Method for manufacturing cold-coiled wire rod for spring
KR20070068665A (en) * 2005-12-27 2007-07-02 주식회사 포스코 High-strength steel part having excellent resistance for delayed fracture and method for producing the same
JP2008133539A (en) * 2006-10-31 2008-06-12 Kobe Steel Ltd Hard drawn spring steel wire superior in fatigue characteristic and wire drawing property

Also Published As

Publication number Publication date
EP2376666A2 (en) 2011-10-19
CN102264935A (en) 2011-11-30
EP2376666A4 (en) 2014-03-26
JP5581335B2 (en) 2014-08-27
US20110247734A1 (en) 2011-10-13
WO2010074544A2 (en) 2010-07-01
JP2012514133A (en) 2012-06-21
KR20100076336A (en) 2010-07-06
CN102264935B (en) 2014-09-03
KR101115761B1 (en) 2012-06-12

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