AR041434A1 - HIGH-RESISTANCE STEEL WITHOUT SEWING TUBE WITH EXCELLENT PROPERTIES OF RESISTANCE TO FISURES CAUSED BY HYDROGEN AND PROCEDURE FOR MANUFACTURING - Google Patents

HIGH-RESISTANCE STEEL WITHOUT SEWING TUBE WITH EXCELLENT PROPERTIES OF RESISTANCE TO FISURES CAUSED BY HYDROGEN AND PROCEDURE FOR MANUFACTURING

Info

Publication number
AR041434A1
AR041434A1 ARP030103550A ARP030103550A AR041434A1 AR 041434 A1 AR041434 A1 AR 041434A1 AR P030103550 A ARP030103550 A AR P030103550A AR P030103550 A ARP030103550 A AR P030103550A AR 041434 A1 AR041434 A1 AR 041434A1
Authority
AR
Argentina
Prior art keywords
steel
tube
seamless
resistance
hydrogen
Prior art date
Application number
ARP030103550A
Other languages
Spanish (es)
Inventor
Nobutoshi Murao
Nobuyuki Hisamune
Hajime Osako
Kunio Kondo
Original Assignee
Sumitomo Metal Ind
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=32072472&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AR041434(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sumitomo Metal Ind filed Critical Sumitomo Metal Ind
Publication of AR041434A1 publication Critical patent/AR041434A1/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
    • 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
    • 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
    • C22C38/04—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
    • C22C38/18—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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/40—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
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C21D2211/002—Bainite
    • 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

Landscapes

  • 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)
  • Heat Treatment Of Articles (AREA)

Abstract

Se describe un tubo sin costura de acero de alta resistencia con excelentes propiedades en resistencia a fisuras provocadas por hidrógeno, el cual se caracteriza por estar constituido por, en % en masa, C : 0,03-0,11%, Si : 0,05-0,5%, Mn : 0,8-1,6%, P : 0,025% o menos, S : 0,003% o menos, Ti : 0,002-0,017%, Al : 0,001-0,10%, Cr : 0,05-0,5%, Mo : 0,02-0,3%, V : 0,02-0,20%, Ca : 0,0005-0,005%, N : 0,008% o menos, y O (oxígeno) : 0,004% o menos, siendo el resto Fe e impurezas, y que también se caracteriza porque la estructura del acero es bainita y/o martensita, la ferrita precipita en las interfases granulares y el límite elástico es 483 MPa o más. Adicionalmente, para asegurar la alta resistencia del acero, el tubo sin costura de acero contiene preferiblemente, en % en masa, al menos uno de los siguientes elementos: Cu : 0,05-05% y Ni : 0,05-0,5%. Para fabricar el tubo de acero mencionado, resulta deseable limitar la temperatura inicial de templado después de la laminación, la velocidad de enfriamiento y la temperatura de revenido. Reivindicación 3: Procedimiento de fabricación de un tubo sin costura de acero de alta resistencia con excelentes propiedades en resistencia a fisuras provocados por hidrógeno, caracterizado porque después de laminar un tocho con una composición según la reivindicación 1 para obtener un tubo sin costura de acero por laminado en caliente, dicho tubo son costura de acero es inmediatamente calentado completamente y luego enfriado de una temperatura inicial de templado de (punto Ar3 + 50° C) a 1100° C y a una velocidad de enfriamiento de 5° C/seg, o más, siendo a continuación dicho tubo sin costura de acero revenido a 550° C a puntos AC1, siendo producido un tubo sin costura de acero en el cual la estructura del acero es bainita y/o martensita, precipitando la ferrita en las interfases granulares, y el límite elástico es 483 MPa o más.A seamless tube of high-strength steel with excellent resistance properties to cracks caused by hydrogen is described, which is characterized by being, in mass%, C: 0.03-0.11%, Si: 0 , 05-0.5%, Mn: 0.8-1.6%, P: 0.025% or less, S: 0.003% or less, Ti: 0.002-0.017%, Al: 0.001-0.10%, Cr : 0.05-0.5%, Mo: 0.02-0.3%, V: 0.02-0.20%, Ca: 0.0005-0.005%, N: 0.008% or less, and O (oxygen): 0.004% or less, the remainder being Fe and impurities, and also characterized in that the structure of the steel is bainite and / or martensite, the ferrite precipitates at the granular interfaces and the elastic limit is 483 MPa or more. Additionally, to ensure the high strength of steel, the seamless steel tube preferably contains, in% by mass, at least one of the following elements: Cu: 0.05-05% and Ni: 0.05-0.5 %. In order to make the mentioned steel tube, it is desirable to limit the initial tempering temperature after rolling, the cooling rate and the tempering temperature. Claim 3: Method of manufacturing a seamless tube of high strength steel with excellent properties in resistance to cracks caused by hydrogen, characterized in that after rolling a billet with a composition according to claim 1 to obtain a seamless steel tube by hot rolled, said steel seam pipe is immediately heated completely and then cooled from an initial tempering temperature of (Ar3 point + 50 ° C) at 1100 ° C and at a cooling rate of 5 ° C / sec, or more , said seamless tube being then tempered steel 550 ° C at AC1 points, a seamless steel tube being produced in which the structure of the steel is bainite and / or martensite, the ferrite precipitates at the granular interfaces, and The elastic limit is 483 MPa or more.

ARP030103550A 2002-10-01 2003-09-29 HIGH-RESISTANCE STEEL WITHOUT SEWING TUBE WITH EXCELLENT PROPERTIES OF RESISTANCE TO FISURES CAUSED BY HYDROGEN AND PROCEDURE FOR MANUFACTURING AR041434A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002288661 2002-10-01
JP2003051427A JP2004176172A (en) 2002-10-01 2003-02-27 High strength seamless steel pipe with excellent hic (hydrogen-induced cracking) resistance, and its manufacturing method

Publications (1)

Publication Number Publication Date
AR041434A1 true AR041434A1 (en) 2005-05-18

Family

ID=32072472

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP030103550A AR041434A1 (en) 2002-10-01 2003-09-29 HIGH-RESISTANCE STEEL WITHOUT SEWING TUBE WITH EXCELLENT PROPERTIES OF RESISTANCE TO FISURES CAUSED BY HYDROGEN AND PROCEDURE FOR MANUFACTURING

Country Status (10)

Country Link
EP (1) EP1546417B1 (en)
JP (1) JP2004176172A (en)
AR (1) AR041434A1 (en)
AT (1) ATE555220T1 (en)
AU (1) AU2003264947B2 (en)
BR (1) BR0314819B1 (en)
CA (1) CA2500518C (en)
MX (1) MXPA05003412A (en)
NO (1) NO339589B1 (en)
WO (1) WO2004031420A1 (en)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4792778B2 (en) * 2005-03-29 2011-10-12 住友金属工業株式会社 Manufacturing method of thick-walled seamless steel pipe for line pipe
JP4945946B2 (en) * 2005-07-26 2012-06-06 住友金属工業株式会社 Seamless steel pipe and manufacturing method thereof
MXPA05008339A (en) * 2005-08-04 2007-02-05 Tenaris Connections Ag High-strength steel for seamless, weldable steel pipes.
CA2620069C (en) * 2005-08-22 2012-01-03 Sumitomo Metal Industries, Ltd. Seamless steel pipe for line pipe and a process for its manufacture
JP2009524741A (en) * 2006-01-26 2009-07-02 アルヴェーディ、ジョヴァンニ Hot rolled low alloy steel sheet for finished product by cold pressing and shearing
WO2008000300A1 (en) 2006-06-29 2008-01-03 Tenaris Connections Ag Seamless precision steel tubes with improved isotropic toughness at low temperature for hydraulic cylinders and process for obtaining the same
WO2008123025A1 (en) * 2007-03-30 2008-10-16 Sumitomo Metal Industries, Ltd. Expandable oil well pipe to be expanded in well and process for production of the pipe
DE102008011856A1 (en) * 2008-02-28 2009-09-10 V&M Deutschland Gmbh High strength low alloy steel for seamless tubes with excellent weldability and corrosion resistance
JP2010024504A (en) * 2008-07-22 2010-02-04 Sumitomo Metal Ind Ltd Seamless steel pipe for line pipe and method for producing the same
EP2325435B2 (en) 2009-11-24 2020-09-30 Tenaris Connections B.V. Threaded joint sealed to [ultra high] internal and external pressures
US9163296B2 (en) 2011-01-25 2015-10-20 Tenaris Coiled Tubes, Llc Coiled tube with varying mechanical properties for superior performance and methods to produce the same by a continuous heat treatment
IT1403689B1 (en) 2011-02-07 2013-10-31 Dalmine Spa HIGH-RESISTANCE STEEL TUBES WITH EXCELLENT LOW TEMPERATURE HARDNESS AND RESISTANCE TO CORROSION UNDER VOLTAGE SENSORS.
US8414715B2 (en) 2011-02-18 2013-04-09 Siderca S.A.I.C. Method of making ultra high strength steel having good toughness
US8636856B2 (en) 2011-02-18 2014-01-28 Siderca S.A.I.C. High strength steel having good toughness
JP6047947B2 (en) 2011-06-30 2016-12-21 Ｊｆｅスチール株式会社 Thick high-strength seamless steel pipe for line pipes with excellent sour resistance and method for producing the same
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
MX2015008990A (en) 2013-01-11 2015-10-14 Tenaris Connections Ltd Galling resistant drill pipe tool joint and corresponding drill pipe.
US9187811B2 (en) 2013-03-11 2015-11-17 Tenaris Connections Limited Low-carbon chromium steel having reduced vanadium and high corrosion resistance, and methods of manufacturing
US9803256B2 (en) 2013-03-14 2017-10-31 Tenaris Coiled Tubes, Llc High performance material for coiled tubing applications and the method of producing the same
EP2789701A1 (en) * 2013-04-08 2014-10-15 DALMINE S.p.A. High strength medium wall quenched and tempered seamless steel pipes and related method for manufacturing said steel pipes
EP2789700A1 (en) 2013-04-08 2014-10-15 DALMINE S.p.A. Heavy wall quenched and tempered seamless steel pipes and related method for manufacturing said steel pipes
CN103205647A (en) * 2013-04-24 2013-07-17 内蒙古包钢钢联股份有限公司 RE (rare earth)-containing moisture and H2S corrosion resistant L415QSS pipeline seamless steel pipe and production method thereof
KR102368928B1 (en) 2013-06-25 2022-03-04 테나리스 커넥션즈 비.브이. High-chromium heat-resistant steel
EP3018229B1 (en) 2013-07-04 2018-09-05 Nippon Steel & Sumitomo Metal Corporation Seamless steel tube for line pipe used in acidic environment and method for its manufacture
EP3031943B1 (en) * 2013-08-06 2020-09-09 Nippon Steel Corporation Seamless steel pipe for line pipe, and method for producing same
WO2015174424A1 (en) * 2014-05-16 2015-11-19 新日鐵住金株式会社 Seamless steel pipe for line pipe, and method for producing same
DE102014016073A1 (en) 2014-10-23 2016-04-28 Vladimir Volchkov stole
JP6276163B2 (en) * 2014-10-31 2018-02-07 株式会社神戸製鋼所 High strength steel plate
JP6672618B2 (en) * 2015-06-22 2020-03-25 日本製鉄株式会社 Seamless steel pipe for line pipe and method of manufacturing the same
JP6394809B2 (en) * 2015-07-27 2018-09-26 新日鐵住金株式会社 Steel pipe for line pipe and manufacturing method thereof
EP3351650B1 (en) * 2015-09-17 2021-05-19 JFE Steel Corporation Steel structure for hydrogen gas with excellent hydrogen embrittlement resistance in high pressure hydrogen gas and method of producing the same
JP6112267B1 (en) * 2016-02-16 2017-04-12 新日鐵住金株式会社 Seamless steel pipe and manufacturing method thereof
ES2846779T3 (en) * 2016-07-13 2021-07-29 Vallourec Deutschland Gmbh Micro-alloyed steel and method of producing such steel
BR112018015533A2 (en) * 2016-07-28 2018-12-26 Nippon Steel & Sumitomo Metal Corporation High intensity seamless steel tubes and riser
US11124852B2 (en) 2016-08-12 2021-09-21 Tenaris Coiled Tubes, Llc Method and system for manufacturing coiled tubing

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2461087A1 (en) * 1973-12-28 1975-07-03 Sumitomo Metal Ind HYDROGEN RESISTANT STEEL FOR PIPING PIPES
JPS575819A (en) * 1980-06-13 1982-01-12 Nippon Kokan Kk <Nkk> Preparation of seamless line pipe having excellent sulfide hydrogen cracking resistance
JPS6417623A (en) * 1987-07-14 1989-01-20 Kowa Co Alignment apparatus in opthalmic apparatus
KR100257900B1 (en) * 1995-03-23 2000-06-01 에모토 간지 Hot rolled sheet and method for forming hot rolled steel sheet having low yield ratio high strength and excellent toughness
JP3502691B2 (en) * 1995-04-12 2004-03-02 新日本製鐵株式会社 Fitting material excellent in hydrogen-induced cracking resistance and sulfide stress corrosion cracking resistance and method for producing the same
JPH10176239A (en) * 1996-10-17 1998-06-30 Kobe Steel Ltd High strength and low yield ratio hot rolled steel sheet for pipe and its production
JP3898814B2 (en) * 1997-11-04 2007-03-28 新日本製鐵株式会社 Continuous cast slab for high strength steel with excellent low temperature toughness and its manufacturing method, and high strength steel with excellent low temperature toughness
JP3812168B2 (en) * 1998-09-30 2006-08-23 住友金属工業株式会社 Manufacturing method of seamless steel pipe for line pipe with excellent strength uniformity and toughness

Also Published As

Publication number Publication date
NO20051405L (en) 2005-06-21
ATE555220T1 (en) 2012-05-15
CA2500518C (en) 2010-08-03
BR0314819A (en) 2005-08-02
MXPA05003412A (en) 2005-10-05
CA2500518A1 (en) 2004-04-15
AU2003264947B2 (en) 2006-08-31
AU2003264947A1 (en) 2004-04-23
NO339589B1 (en) 2017-01-09
BR0314819B1 (en) 2011-07-12
WO2004031420A1 (en) 2004-04-15
EP1546417B1 (en) 2012-04-25
EP1546417A1 (en) 2005-06-29
JP2004176172A (en) 2004-06-24

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