ID21234A - VERY FINE GRANULAR STEEL PIPES AND METHODS TO PRODUCE IT - Google Patents

VERY FINE GRANULAR STEEL PIPES AND METHODS TO PRODUCE IT

Info

Publication number
ID21234A
ID21234A IDW990042A ID990042A ID21234A ID 21234 A ID21234 A ID 21234A ID W990042 A IDW990042 A ID W990042A ID 990042 A ID990042 A ID 990042A ID 21234 A ID21234 A ID 21234A
Authority
ID
Indonesia
Prior art keywords
steel pipe
thetam
tred
produce
methods
Prior art date
Application number
IDW990042A
Other languages
Indonesian (id)
Inventor
Takaaki Toyooka
Akira Yorifuji
Masanori Nishimori
Matoaki Itadani
Yuji Hashimoto
Takatoshi Okabe
Taro Kanayama
Masahiko Morita
Matsuoka J Saiji
Nobuki Tanaka
Osamu Furukimi
Takaaki Hira
Original Assignee
Kawasaki Steel Co
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
Priority claimed from JP24093097A external-priority patent/JP3896647B2/en
Priority claimed from JP13393398A external-priority patent/JP3622499B2/en
Application filed by Kawasaki Steel Co filed Critical Kawasaki Steel Co
Publication of ID21234A publication Critical patent/ID21234A/en

Links

Classifications

    • 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
    • C21D2201/00—Treatment for obtaining particular effects

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Metal Extraction Processes (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A steel pipe containing fine ferrite crystal grains, which has excellent toughness and ductility and good ductility-strength balance as well as superior collision impact resistance, and a method for producing the same are provided. A steel pipe containing super-fine crystal grains can be produced by heating a base steel pipe having ferrite grains with an average crystal diameter of di (mum), in which C, Si, Mn and Al are limited within proper ranges, and if necessary, Cu, Ni, Cr and Mo, or Nb, Ti, V, B, etc. are further added, at not higher than the Ac3 transformation point, and applying reducing at an average rolling temperature of thetam (° C.) and a total reduction ratio Tred (%) within s temperature range of from 400 to Ac3 transformation point, with di, thetam and Tred being in a relation satisfying a prescribed equation.
IDW990042A 1997-06-26 1998-06-24 VERY FINE GRANULAR STEEL PIPES AND METHODS TO PRODUCE IT ID21234A (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP17079097 1997-06-26
JP19603897 1997-07-22
JP22331597 1997-08-20
JP22857997 1997-08-25
JP24093097A JP3896647B2 (en) 1997-09-05 1997-09-05 Manufacturing method of high-strength steel pipe with excellent workability
JP13393398A JP3622499B2 (en) 1997-05-15 1998-05-15 Steel pipe manufacturing method

Publications (1)

Publication Number Publication Date
ID21234A true ID21234A (en) 1999-05-06

Family

ID=29716380

Family Applications (1)

Application Number Title Priority Date Filing Date
IDW990042A ID21234A (en) 1997-06-26 1998-06-24 VERY FINE GRANULAR STEEL PIPES AND METHODS TO PRODUCE IT

Country Status (5)

Country Link
US (1) US20030221753A1 (en)
KR (1) KR100330432B1 (en)
AT (1) ATE312208T1 (en)
DE (1) DE69832684T2 (en)
ID (1) ID21234A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100530078B1 (en) * 2001-12-24 2005-11-22 주식회사 포스코 35kg/mm2 grade hot-rolled steel sheet with a good pipe formability by the mini-mill process and method for manufacturing thereof
AU2003222211A1 (en) * 2002-02-12 2003-09-04 The Timken Company Low carbon microalloyed steel
DE102014205392A1 (en) * 2014-03-24 2015-09-24 Comtes Fht A. S. Components made of a steel alloy and method for producing high-strength components
JP5909014B1 (en) * 2015-06-08 2016-04-26 オリジン電気株式会社 Bonding member manufacturing method and bonding member manufacturing apparatus
WO2018042522A1 (en) * 2016-08-30 2018-03-08 新日鐵住金株式会社 Oil well pipe for expandable tubular

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466842A (en) * 1982-04-03 1984-08-21 Nippon Steel Corporation Ferritic steel having ultra-fine grains and a method for producing the same
DE3415590A1 (en) * 1984-04-24 1985-10-31 Mannesmann AG, 4000 Düsseldorf USE OF A STEEL IN HYDROGEN-LIQUID
CA2004548C (en) * 1988-12-05 1996-12-31 Kenji Aihara Metallic material having ultra-fine grain structure and method for its manufacture
JP2913115B2 (en) * 1990-10-03 1999-06-28 住友金属工業株式会社 Manufacturing method of steel bars with ultrafine structure
US5200005A (en) * 1991-02-08 1993-04-06 Mcgill University Interstitial free steels and method thereof

Also Published As

Publication number Publication date
KR100330432B1 (en) 2002-03-27
KR20000068335A (en) 2000-11-25
DE69832684D1 (en) 2006-01-12
DE69832684T2 (en) 2006-06-22
US20030221753A1 (en) 2003-12-04
ATE312208T1 (en) 2005-12-15

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