EP2135962A4 - Tuyau en acier cémenté ayant une excellente aptitude au façonnage et son procédé de fabrication - Google Patents

Tuyau en acier cémenté ayant une excellente aptitude au façonnage et son procédé de fabrication

Info

Publication number
EP2135962A4
EP2135962A4 EP08739140.5A EP08739140A EP2135962A4 EP 2135962 A4 EP2135962 A4 EP 2135962A4 EP 08739140 A EP08739140 A EP 08739140A EP 2135962 A4 EP2135962 A4 EP 2135962A4
Authority
EP
European Patent Office
Prior art keywords
workability
production
case
steel pipe
hardened steel
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.)
Granted
Application number
EP08739140.5A
Other languages
German (de)
English (en)
Other versions
EP2135962B1 (fr
EP2135962A1 (fr
Inventor
Kenichi Beppu
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel and Sumitomo Metal 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.)
Filing date
Publication date
Application filed by Nippon Steel and Sumitomo Metal Corp filed Critical Nippon Steel and Sumitomo Metal Corp
Publication of EP2135962A1 publication Critical patent/EP2135962A1/fr
Publication of EP2135962A4 publication Critical patent/EP2135962A4/fr
Application granted granted Critical
Publication of EP2135962B1 publication Critical patent/EP2135962B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • C21D1/26—Methods of annealing
    • C21D1/28—Normalising
    • 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
    • C21D1/26—Methods of annealing
    • C21D1/32—Soft annealing, e.g. spheroidising
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/02—Hardening by precipitation
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
    • 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
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • 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
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C21D9/085—Cooling or quenching
    • 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
    • C22C38/22—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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • 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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with 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
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with 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
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/02—Pretreatment of the material to be coated
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/40—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions
    • C23C8/42—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions only one element being applied
    • C23C8/44—Carburising
    • C23C8/46—Carburising of ferrous surfaces
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/80—After-treatment
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
EP08739140.5A 2007-03-29 2008-03-28 Tuyau en acier cémenté ayant une excellente aptitude au façonnage et son procédé de fabrication Active EP2135962B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007088283 2007-03-29
PCT/JP2008/056016 WO2008123397A1 (fr) 2007-03-29 2008-03-28 Tuyau en acier cémenté ayant une excellente aptitude au façonnage et son procédé de fabrication

Publications (3)

Publication Number Publication Date
EP2135962A1 EP2135962A1 (fr) 2009-12-23
EP2135962A4 true EP2135962A4 (fr) 2015-03-04
EP2135962B1 EP2135962B1 (fr) 2016-07-13

Family

ID=39830882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08739140.5A Active EP2135962B1 (fr) 2007-03-29 2008-03-28 Tuyau en acier cémenté ayant une excellente aptitude au façonnage et son procédé de fabrication

Country Status (7)

Country Link
US (1) US20100051143A1 (fr)
EP (1) EP2135962B1 (fr)
JP (1) JP5126857B2 (fr)
KR (1) KR101113575B1 (fr)
CN (1) CN101646788B (fr)
MX (1) MX2009010307A (fr)
WO (1) WO2008123397A1 (fr)

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CN102206792B (zh) * 2011-05-04 2013-08-07 江苏标新久保田工业有限公司 一种低合金材料沉没辊
CN103031495B (zh) * 2011-10-08 2014-08-27 山西太钢不锈钢股份有限公司 一种高速铁路客车空心车轴用钢的模铸方法
CN102373398A (zh) * 2011-10-30 2012-03-14 山西太钢不锈钢股份有限公司 一种硼钢渗碳前的预先热处理方法
US9340847B2 (en) * 2012-04-10 2016-05-17 Tenaris Connections Limited Methods of manufacturing steel tubes for drilling rods with improved mechanical properties, and rods made by the same
KR101467047B1 (ko) * 2012-10-31 2014-12-01 현대제철 주식회사 내열강 제조 방법
CN103320597B (zh) * 2013-06-14 2014-11-26 攀钢集团成都钢钒有限公司 一种细化10Cr9Mo1VNbN钢管及锻件粗晶的方法
EP3085800B1 (fr) * 2013-12-20 2019-02-06 Nippon Steel & Sumitomo Metal Corporation Tuyau en acier soudé à résistance électrique
JP2016141821A (ja) * 2015-01-30 2016-08-08 大同特殊鋼株式会社 冷間鍛造性及び耐結晶粒粗大化特性に優れた鋼材の軟化熱処理方法
CN105041658B (zh) * 2015-08-11 2018-06-12 宁波甬微集团有限公司 一种制冷压缩机用滚动活塞及其制造方法
CN105385817A (zh) * 2015-11-12 2016-03-09 芜湖天金机械有限公司 提高切削性能的万向节球壳正火工艺
CN105525205B (zh) * 2015-12-25 2017-07-25 钢铁研究总院 一种390MPa级正火型微合金化钢板
CN105714194B (zh) * 2016-02-29 2017-06-20 宝鸡石油机械有限责任公司 ZG20CrNiMnMo铸钢及其铸钢件制备方法
US20180030562A1 (en) * 2016-07-28 2018-02-01 The Gleason Works Heat treatment of steel parts, particularly friction-welded steel parts
CN106222518A (zh) * 2016-08-15 2016-12-14 合肥万向钱潮汽车零部件有限公司 一种汽车传动轴的万向节凸缘叉的材料配方
CN108893650A (zh) * 2018-06-01 2018-11-27 张家港保税区恒隆钢管有限公司 一种汽车前防撞梁用无缝钢管及其制备方法
CN110172638B (zh) * 2019-05-10 2021-06-15 武汉钢铁有限公司 一种高温渗碳齿轮钢及生产方法
CN110923420A (zh) * 2019-12-17 2020-03-27 常熟市恒丰机械制造有限公司 一种导纱器的生产工艺
CN112981237B (zh) * 2021-01-28 2022-10-11 江阴兴澄特种钢铁有限公司 一种球笼式万向节保持架用钢及其生产方法
CN113106334A (zh) * 2021-03-11 2021-07-13 石家庄钢铁有限责任公司 一种rv减速器摆线轮用钢及其制备方法
EP4324941A1 (fr) * 2022-08-19 2024-02-21 Benteler Steel/Tube GmbH Procédé de fabrication d'un produit semi-fini tubulaire
CN115491480B (zh) * 2022-09-15 2024-01-26 浙江蓝能氢能科技股份有限公司 一种储氢瓶式容器热处理系统

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JPH0649541A (ja) * 1992-08-05 1994-02-22 Nippon Steel Corp 冷間成形による建築用低降伏比鋼管の製造法
JPH1081938A (ja) * 1996-09-05 1998-03-31 Sanyo Special Steel Co Ltd 結晶粒度特性に優れた肌焼ボロン鋼
EP0877097A1 (fr) * 1997-04-29 1998-11-11 Ovako Steel AB Acier de cémentation
US5853502A (en) * 1995-08-11 1998-12-29 Sumitomo Metal Industries, Ltd. Carburizing steel and steel products manufactured making use of the carburizing steel
EP1382703A2 (fr) * 2002-07-10 2004-01-21 Nippon Steel Corporation Tube en acier à bas rapport de la limite d'élasticité à la résistance à la rupture
EP1637619A1 (fr) * 2003-05-21 2006-03-22 Sumitomo Metal Industries, Ltd. Methode d'analyse de la fonction physiologique d'une substance cible
WO2006046503A1 (fr) * 2004-10-29 2006-05-04 Sumitomo Metal Industries, Ltd. Tuyau en acier pour dispositif de gonflage d'un air bag et procede de production de celui-ci

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JPH0820820A (ja) * 1994-07-08 1996-01-23 Sumitomo Metal Ind Ltd 耐粗粒化特性に優れた肌焼鋼管の製造方法
JP3236883B2 (ja) * 1995-08-11 2001-12-10 住友金属工業株式会社 肌焼鋼及びそれを用いた鋼管の製造方法
JP2001200313A (ja) * 2000-01-17 2001-07-24 Nippon Steel Corp 加工性に優れた冷間鍛造用電縫鋼管の製造方法
JP2003328079A (ja) * 2002-05-14 2003-11-19 Nippon Steel Corp 加工性に優れた冷間鍛造用鋼管とその製造方法。
MXPA04010403A (es) * 2002-06-26 2005-02-17 Jfe Steel Corp Metodo para producir tubo de acero sin union para inflador de bolsas de aire.
JP4145764B2 (ja) * 2003-09-30 2008-09-03 山陽特殊製鋼株式会社 冷間加工性及び結晶粒度特性に優れたボロン添加肌焼鋼鋼管の製造方法
JP4448456B2 (ja) 2004-01-29 2010-04-07 新日本製鐵株式会社 浸炭時の粗大粒防止特性と疲労特性に優れた肌焼鋼とその製造方法
CN101065508B (zh) * 2004-11-26 2010-11-03 杰富意钢铁株式会社 电磁特性优异的钢管及其制造方法
JP4987263B2 (ja) * 2005-07-26 2012-07-25 三桜工業株式会社 高強度鋼管およびその熱処理方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0649541A (ja) * 1992-08-05 1994-02-22 Nippon Steel Corp 冷間成形による建築用低降伏比鋼管の製造法
US5853502A (en) * 1995-08-11 1998-12-29 Sumitomo Metal Industries, Ltd. Carburizing steel and steel products manufactured making use of the carburizing steel
JPH1081938A (ja) * 1996-09-05 1998-03-31 Sanyo Special Steel Co Ltd 結晶粒度特性に優れた肌焼ボロン鋼
EP0877097A1 (fr) * 1997-04-29 1998-11-11 Ovako Steel AB Acier de cémentation
EP1382703A2 (fr) * 2002-07-10 2004-01-21 Nippon Steel Corporation Tube en acier à bas rapport de la limite d'élasticité à la résistance à la rupture
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Also Published As

Publication number Publication date
JP5126857B2 (ja) 2013-01-23
CN101646788B (zh) 2011-04-13
MX2009010307A (es) 2009-10-16
CN101646788A (zh) 2010-02-10
EP2135962B1 (fr) 2016-07-13
WO2008123397A1 (fr) 2008-10-16
EP2135962A1 (fr) 2009-12-23
JPWO2008123397A1 (ja) 2010-07-15
KR20090125134A (ko) 2009-12-03
US20100051143A1 (en) 2010-03-04
KR101113575B1 (ko) 2012-03-13

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