NO20080271L - Fremgangsmate for fremstilling av somlos stalpipe - Google Patents

Fremgangsmate for fremstilling av somlos stalpipe

Info

Publication number
NO20080271L
NO20080271L NO20080271A NO20080271A NO20080271L NO 20080271 L NO20080271 L NO 20080271L NO 20080271 A NO20080271 A NO 20080271A NO 20080271 A NO20080271 A NO 20080271A NO 20080271 L NO20080271 L NO 20080271L
Authority
NO
Norway
Prior art keywords
temperature
point
followed
temperature range
tube
Prior art date
Application number
NO20080271A
Other languages
English (en)
Inventor
Yuji Arai
Keiichi Nakamura
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
Application filed by Sumitomo Metal Ind filed Critical Sumitomo Metal Ind
Publication of NO20080271L publication Critical patent/NO20080271L/no

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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/10—Modifying the physical properties of ferrous metals or ferrous alloys 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
    • 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
    • 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
    • C22C38/22—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
    • C22C38/28—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

Landscapes

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

Abstract

Et sømløst stålrør fremstilt ved oppvarming av en stålbarre, som har en kjemisk sammensetning C: 0,15 til 0,20 %, Si: ikke mindre enn 0,01 % til mindre enn 0,15 %, Mn: 0,05 til 1,0 %, Cr: 0,05 til 1,5 %, Mo: 0,05 til 1,0 %, Al < 0,10 %, V: 0,01 til 0,2 %, Ti: 0,002 til 0,03 %, B: 0,0003 til 0,005 % og N: 0,002 til 0,01 %, videre eventuelt én eller flere av Ca, Mg og REM i en spesifikk mengde, med det forbehold at betingelsene "C + (Mn/6) + (Cr/5) + (Mo/3) > 0,43" og "Ti x N < 0,0002 - 0,0006 * Si" er oppfylt, hvor balansen er Fe og urenheter, hvori P < 0,025 %, S < 0,010 % og Nb < 0,005 % blant urenhetene, til en temperatur på 1000 til 1250°C fulgt av rør-fremstillingsvalsing ved en sluttvalsetemperatur 900 til 1050°C, og deretter bråkjøling av det resulterende stålrør direkte fra en temperatur som ikke er lavere enn Artransformasjonspunktet fulgt av utgløding ved et temperaturområde fra 600°C til Actransformasjonspunktet, eller i steden for det vist over etter nevnte rør-fremstillingsvalsing, komplementær oppvarming av det resulterende stålrør i et temperaturområde fra Actransformasjonspunktet til 1000°C in-line, og deretter bråkjøling av det fra en temperatur som ikke er lavere enn Artransformasjonspunktet fulgt av utgløding ved et temperaturområde fra 600°C til Actransformasjonspunktet, har høy styrke og utmerket seighet og har samtidig et høyt strekkforhold og har også utmerket SSC motstand.
NO20080271A 2005-07-25 2008-01-16 Fremgangsmate for fremstilling av somlos stalpipe NO20080271L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005214723A JP4635764B2 (ja) 2005-07-25 2005-07-25 継目無鋼管の製造方法
PCT/JP2006/314630 WO2007013429A1 (ja) 2005-07-25 2006-07-25 継目無鋼管の製造方法

Publications (1)

Publication Number Publication Date
NO20080271L true NO20080271L (no) 2008-02-20

Family

ID=37683325

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20080271A NO20080271L (no) 2005-07-25 2008-01-16 Fremgangsmate for fremstilling av somlos stalpipe

Country Status (8)

Country Link
US (1) US8361256B2 (no)
EP (1) EP1914324A4 (no)
JP (1) JP4635764B2 (no)
CN (1) CN100587083C (no)
BR (1) BRPI0613973B1 (no)
NO (1) NO20080271L (no)
RU (1) RU2377320C2 (no)
WO (1) WO2007013429A1 (no)

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Also Published As

Publication number Publication date
US20080121318A1 (en) 2008-05-29
BRPI0613973A2 (pt) 2011-02-22
BRPI0613973B1 (pt) 2018-02-27
US8361256B2 (en) 2013-01-29
EP1914324A1 (en) 2008-04-23
RU2008106938A (ru) 2009-09-10
WO2007013429A1 (ja) 2007-02-01
RU2377320C2 (ru) 2009-12-27
CN101233245A (zh) 2008-07-30
EP1914324A4 (en) 2011-09-28
JP4635764B2 (ja) 2011-02-23
JP2007031756A (ja) 2007-02-08
CN100587083C (zh) 2010-02-03

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