JPS5633434A - Preparation of high tensile seam welded steel pipe for oil well having superior hydrogen brittleness resistance - Google Patents

Preparation of high tensile seam welded steel pipe for oil well having superior hydrogen brittleness resistance

Info

Publication number
JPS5633434A
JPS5633434A JP10792679A JP10792679A JPS5633434A JP S5633434 A JPS5633434 A JP S5633434A JP 10792679 A JP10792679 A JP 10792679A JP 10792679 A JP10792679 A JP 10792679A JP S5633434 A JPS5633434 A JP S5633434A
Authority
JP
Japan
Prior art keywords
oil well
high tensile
steel pipe
preparation
seam welded
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
JP10792679A
Other languages
Japanese (ja)
Other versions
JPS5844726B2 (en
Inventor
Katsutoshi Yamada
Hiroshi Murayama
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 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 Corp filed Critical Nippon Steel Corp
Priority to JP10792679A priority Critical patent/JPS5844726B2/en
Publication of JPS5633434A publication Critical patent/JPS5633434A/en
Publication of JPS5844726B2 publication Critical patent/JPS5844726B2/en
Expired legal-status Critical Current

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
    • 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

Abstract

PURPOSE:To obtain titled high tensile seam welded steel pipe for oil well, by hardening the steel material composed of a specific component, such as C, Si, Mn and containing a specific content of Ti corresponding to N contact and also, containing Ca, rare earth metals at a specific temperature and tempering at a specific temperature. CONSTITUTION:Steel material containing 0.06-0.35 C, <=0.5 Si, <=1.6 Mn, <=0.04 P, <=0.01 S, <=0.04 Ti, 0.0001-0.0025 B, <=0.008 N, 0.25-0.4 Cu, <=0.1 Al, by wt% and in regard to Ti, N, on occasion of 0.005-0.008 n content in the steel the following formula is satisfied, 0.04>=%Ti>=3.42X%N+0.0022 and also, on occasion of 0.035-0.055 N content the following formula is satisfied 0.04>=%Ti>= 10.5X%N-0.0368 and then, on occasion of <=0.0035 N content, the following formula is satisfied, 0.04>=%Ti>=0 and moreover, containing 0.001-0.1 Ca, one or two kinds of 0.005-0.1 rare earth metals, and Ca/S>=0.5, rare earth metals/S>=1 by wt% is used. Said steel is hardened at the austenitizing temperature or more, 1, 100 deg.C or less and is tempered at 500 deg.C or more, Ac3 transformation point or less.
JP10792679A 1979-08-24 1979-08-24 Method for manufacturing high-strength ERW steel pipes for oil wells with excellent hydrogen embrittlement resistance Expired JPS5844726B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10792679A JPS5844726B2 (en) 1979-08-24 1979-08-24 Method for manufacturing high-strength ERW steel pipes for oil wells with excellent hydrogen embrittlement resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10792679A JPS5844726B2 (en) 1979-08-24 1979-08-24 Method for manufacturing high-strength ERW steel pipes for oil wells with excellent hydrogen embrittlement resistance

Publications (2)

Publication Number Publication Date
JPS5633434A true JPS5633434A (en) 1981-04-03
JPS5844726B2 JPS5844726B2 (en) 1983-10-05

Family

ID=14471544

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10792679A Expired JPS5844726B2 (en) 1979-08-24 1979-08-24 Method for manufacturing high-strength ERW steel pipes for oil wells with excellent hydrogen embrittlement resistance

Country Status (1)

Country Link
JP (1) JPS5844726B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2573439A1 (en) * 1984-11-20 1986-05-23 Nippon Steel Corp HIGH-STRENGTH STEEL
CN103397255A (en) * 2013-08-09 2013-11-20 武汉钢铁(集团)公司 High-performance free-cutting steel with small anisotropy

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2573439A1 (en) * 1984-11-20 1986-05-23 Nippon Steel Corp HIGH-STRENGTH STEEL
CN103397255A (en) * 2013-08-09 2013-11-20 武汉钢铁(集团)公司 High-performance free-cutting steel with small anisotropy

Also Published As

Publication number Publication date
JPS5844726B2 (en) 1983-10-05

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