WO2012002638A3 - 초고강도 철근 및 그 제조방법 - Google Patents

초고강도 철근 및 그 제조방법 Download PDF

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Publication number
WO2012002638A3
WO2012002638A3 PCT/KR2011/002744 KR2011002744W WO2012002638A3 WO 2012002638 A3 WO2012002638 A3 WO 2012002638A3 KR 2011002744 W KR2011002744 W KR 2011002744W WO 2012002638 A3 WO2012002638 A3 WO 2012002638A3
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WIPO (PCT)
Prior art keywords
steel bar
strength
ultra
milling
bar
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PCT/KR2011/002744
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English (en)
French (fr)
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WO2012002638A2 (ko
Inventor
이상윤
이형철
권영준
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현대제철 주식회사
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Application filed by 현대제철 주식회사 filed Critical 현대제철 주식회사
Priority to EP11801045.3A priority Critical patent/EP2586884A2/en
Priority to JP2013518219A priority patent/JP5657790B2/ja
Priority to CN201180035845.9A priority patent/CN103038382B/zh
Priority to US13/807,274 priority patent/US9200353B2/en
Publication of WO2012002638A2 publication Critical patent/WO2012002638A2/ko
Publication of WO2012002638A3 publication Critical patent/WO2012002638A3/ko

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    • 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
    • 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
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • 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
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
    • 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
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/08—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires for concrete reinforcement
    • 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
    • C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • 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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • 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
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • 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
    • C21D2211/008—Martensite
    • 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
    • C21D2221/00—Treating localised areas of an article
    • C21D2221/10—Differential treatment of inner with respect to outer regions, e.g. core and periphery, respectively

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

본 발명은 초고강도 철근 및 그 제조방법에 관한 것으로, C: 0.05~0.45wt%, Si: 0.10~0.35wt%, Mn: 0.1~0.85wt%, Cr: 0.6~1.20wt%, Mo: 0.05~0.35wt%, 나머지 Fe 및 기타 불순물로 조성된다. 제조방법은 상술한 합금조성을 갖는 철근용 빌렛을 재가열하고 조압연하는 과정을 2회 수행하여 초기 오스테나이트 입자 크기를 작게 한 후, 중간압연, 사상압연을 통하여 철근형상으로 제조하고 템프코어 공정을 통해 400~600℃까지 수냉시킴에 의해 중심층에 미세한 페라이트 조직이 형성되도록 한다. 본 발명은 합금설계와 열처리 및 압연비 제어, 템퍼코어 공정 등을 통해 표면층에 경화층인 마르텐사이트 조직을 형성하고, 중심층에 미세한 페라이트 조직을 포함하도록 함으로써 항복강도 800MPa 이상, 인장강도 900MPa 이상, 연신율 10% 이상 및 180°굽힘시험을 만족하는 초고강도 철근을 생산한다. 따라서 고강도 콘크리트와 결합하여 주근 및 전단보강근 부재로 건축구조물에 유용하게 사용될 수 있는 이점이 있다.
PCT/KR2011/002744 2010-06-28 2011-04-18 초고강도 철근 및 그 제조방법 WO2012002638A2 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP11801045.3A EP2586884A2 (en) 2010-06-28 2011-04-18 Ultra-high-strength steel bar and method for manufacturing same
JP2013518219A JP5657790B2 (ja) 2010-06-28 2011-04-18 超高強度鉄筋及びその製造方法
CN201180035845.9A CN103038382B (zh) 2010-06-28 2011-04-18 超高强度钢筋及其制造方法
US13/807,274 US9200353B2 (en) 2010-06-28 2011-04-18 Method for manufacturing an ultra-highstrength steel bar

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2010-0061259 2010-06-28
KR1020100061259A KR101185242B1 (ko) 2010-06-28 2010-06-28 초고강도 철근의 제조방법

Publications (2)

Publication Number Publication Date
WO2012002638A2 WO2012002638A2 (ko) 2012-01-05
WO2012002638A3 true WO2012002638A3 (ko) 2012-02-23

Family

ID=45402503

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/002744 WO2012002638A2 (ko) 2010-06-28 2011-04-18 초고강도 철근 및 그 제조방법

Country Status (6)

Country Link
US (1) US9200353B2 (ko)
EP (1) EP2586884A2 (ko)
JP (1) JP5657790B2 (ko)
KR (1) KR101185242B1 (ko)
CN (1) CN103038382B (ko)
WO (1) WO2012002638A2 (ko)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101253838B1 (ko) * 2010-12-27 2013-04-12 주식회사 포스코 이물성 부품의 제조방법
CN103484775B (zh) * 2013-09-26 2015-04-15 江苏天舜金属材料集团有限公司 一种730MPa级高强热轧钢筋及其生产工艺
CN103498104B (zh) * 2013-09-26 2015-06-24 江苏天舜金属材料集团有限公司 一种630MPa级高强热轧钢筋及其生产工艺
CN103484780B (zh) * 2013-09-26 2015-06-24 江苏天舜金属材料集团有限公司 一种830MPa级高强热轧钢筋及其生产工艺
EP3072986B1 (en) * 2013-11-19 2019-01-02 Nippon Steel & Sumitomo Metal Corporation Steel bar
KR101583899B1 (ko) * 2014-01-02 2016-01-13 한양대학교 에리카산학협력단 열연 강판, 그 제조 방법, 및 제조 설비
CN103966510A (zh) * 2014-04-14 2014-08-06 南京钢铁股份有限公司 一种小规格英标螺纹钢b500b及其生产工艺
CN105648307A (zh) * 2016-01-20 2016-06-08 广西丛欣实业有限公司 高强度钢筋
KR101787287B1 (ko) * 2016-10-21 2017-10-19 현대제철 주식회사 고강도 철근 및 이의 제조 방법
CN108441781B (zh) * 2018-02-28 2020-05-08 河钢股份有限公司承德分公司 一种高强耐腐蚀钢筋及其热处理方法
KR102173920B1 (ko) * 2018-11-16 2020-11-04 고려대학교 산학협력단 항복비와 균일연신율이 우수한 항복강도 700 MPa급 철근 및 그 제조 방법
WO2020162983A1 (en) * 2019-02-08 2020-08-13 Nucor Corporation Ultra-high strength weathering steel and high friction rolling of the same
CN110218952B (zh) * 2019-07-17 2021-07-02 山东钢铁股份有限公司 一种精轧螺纹钢筋及其生产方法
KR102252106B1 (ko) * 2019-08-20 2021-05-14 동국제강주식회사 항복강도 620MPa급 이상의 내진철근의 제조방법 및 이 제조방법으로 제조된 항복강도 620MPa급 이상의 내진철근
CN110631916B (zh) * 2019-11-01 2022-04-08 山东精准产品质量检测有限公司 一种冷轧带肋钢筋检测装置
CN111647794B (zh) * 2020-04-17 2021-09-24 江阴兴澄特种钢铁有限公司 一种钢棒线材打包钢丝及制造方法
CN111560500A (zh) * 2020-06-17 2020-08-21 徐鹏 一种复合钢淬火工艺
CN114672724B (zh) * 2022-02-21 2023-03-10 长沙东鑫环保材料有限责任公司 一种稀土和氮微合金化含钼hrb500e盘螺钢筋及其生产方法
CN117568723A (zh) * 2023-11-20 2024-02-20 北京科技大学 一种海水海砂混凝土用高耐蚀钢筋及其制备方法

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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6286125A (ja) * 1985-08-30 1987-04-20 Kobe Steel Ltd 高強度高靭性熱間圧延鋼材の製造方法
JPH09125143A (ja) * 1995-09-01 1997-05-13 Sumitomo Metal Ind Ltd 高強度低降伏比鉄筋用鋼材の製造方法
KR20090043401A (ko) * 2007-10-29 2009-05-06 현대제철 주식회사 초고강도 철근의 제조방법
KR20090132796A (ko) * 2008-06-23 2009-12-31 동국제강주식회사 고강도 저항복비 철근의 제조방법

Also Published As

Publication number Publication date
WO2012002638A2 (ko) 2012-01-05
CN103038382A (zh) 2013-04-10
KR20120000799A (ko) 2012-01-04
JP2013533384A (ja) 2013-08-22
US9200353B2 (en) 2015-12-01
JP5657790B2 (ja) 2015-01-21
EP2586884A2 (en) 2013-05-01
US20130098513A1 (en) 2013-04-25
KR101185242B1 (ko) 2012-09-21
CN103038382B (zh) 2015-04-22

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