JPS5638421A - Manufacture of steel pipe for oil well with excellent collapsing strength - Google Patents

Manufacture of steel pipe for oil well with excellent collapsing strength

Info

Publication number
JPS5638421A
JPS5638421A JP11371879A JP11371879A JPS5638421A JP S5638421 A JPS5638421 A JP S5638421A JP 11371879 A JP11371879 A JP 11371879A JP 11371879 A JP11371879 A JP 11371879A JP S5638421 A JPS5638421 A JP S5638421A
Authority
JP
Japan
Prior art keywords
steel pipe
oil well
pinch roll
pressing force
heat treatment
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
JP11371879A
Other languages
Japanese (ja)
Other versions
JPS6027732B2 (en
Inventor
Toshihisa Tagami
Hiroshi Nishi
Yoshiichi Kitahaba
Keiichiro Takitani
Sadao Hasuno
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP11371879A priority Critical patent/JPS6027732B2/en
Publication of JPS5638421A publication Critical patent/JPS5638421A/en
Publication of JPS6027732B2 publication Critical patent/JPS6027732B2/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

Landscapes

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

Abstract

PURPOSE:To raise the collapsing strength of a steel pipe for oil well by subjecting the steel pipe to a heat treatment in which the steel pipe is fixed by a pinch roll under a specifically relative condition of the heating temperature and the pressing force of the pinch roll. CONSTITUTION:In the heat treatment of a long steel pipe D for oil well, the steel pipe D is fixed by a self-weight-cancelling type pinch roll E on outer both ends and plural positions at central part of the heat treatment equipments A, B, and C and heated to a specific temperature under the pressing force of the pinch roll E. In this case, the relation between the heating temperature and the pressing force of the pinch roll E for heat treating steel pipe D is kept to the conditions of temperature and pressing force within the region surrounded by the points A, B, C, and D at the third time. Thereby, steel pipe for oil well, having excellent collapsing strength can be manufactured.
JP11371879A 1979-09-05 1979-09-05 Manufacturing method for oil well steel pipes with excellent collapse strength Expired JPS6027732B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11371879A JPS6027732B2 (en) 1979-09-05 1979-09-05 Manufacturing method for oil well steel pipes with excellent collapse strength

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11371879A JPS6027732B2 (en) 1979-09-05 1979-09-05 Manufacturing method for oil well steel pipes with excellent collapse strength

Publications (2)

Publication Number Publication Date
JPS5638421A true JPS5638421A (en) 1981-04-13
JPS6027732B2 JPS6027732B2 (en) 1985-07-01

Family

ID=14619376

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11371879A Expired JPS6027732B2 (en) 1979-09-05 1979-09-05 Manufacturing method for oil well steel pipes with excellent collapse strength

Country Status (1)

Country Link
JP (1) JPS6027732B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008267475A (en) * 2007-04-19 2008-11-06 Denso Corp Electromagnetic actuator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0228629U (en) * 1988-08-17 1990-02-23

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008267475A (en) * 2007-04-19 2008-11-06 Denso Corp Electromagnetic actuator

Also Published As

Publication number Publication date
JPS6027732B2 (en) 1985-07-01

Similar Documents

Publication Publication Date Title
JPS5638421A (en) Manufacture of steel pipe for oil well with excellent collapsing strength
JPS51148611A (en) Heat-treatment process of steel
JPS55158221A (en) Box annealing method of hoop coil
JPS57192221A (en) Precise heat-treatment of thin hollow cylindrical body, apparatus therefor, and precisely heat-treated thin hollow cylindrical body obtained thereby
JPS5336048A (en) Induction heater for metallic pipe
Ashikhmina Aspects of the Healing of Microcavities Formed During Creep\ of Heat-Resistant Steels\
JPS5538943A (en) Locally annealing method for welded structure
DE69004077D1 (en) Preparation process for the coextrusion of metal bars with several cylindrical layers.
Hamada Forming of Clad Steels
JPS52126607A (en) Preheating of material for hot rolling
JPS6447810A (en) High frequency temperating method
JPS56102526A (en) Heat treating apparatus of metallic strip
KR830007158A (en) Manufacturing method of high tensile line
JPS5591936A (en) Heat treatment method for steel pipe
JPS5328506A (en) Induction heating method
SU621762A1 (en) Method of heat treatment of welded articles
JPS5292816A (en) Heat treatment of sleeve roll for rolling
JPS54159316A (en) Heat treating method for increasing piping strength
JPS6473024A (en) Hearth roll for continuous heat treatment furnace
JPS5367611A (en) Annealing method for welded part of electrically seam welded steel pipe
JPS5651342A (en) Microwave heater for tire
JPS5669323A (en) Direct heating method and apparatus for hoop
JPS5288508A (en) Uniform heating method of pipe ends in induction heating of upset meta llic pipe
Tichy et al. Hardenability, Heat Treatment Diagram, Tempering Characteristics of Manganese Steels for Dividing Reinforcements
JPS54112364A (en) Roll for sendzimir mill and its heat treating method