JPS55125233A - Immersion hardening method of steel pipe - Google Patents

Immersion hardening method of steel pipe

Info

Publication number
JPS55125233A
JPS55125233A JP3371979A JP3371979A JPS55125233A JP S55125233 A JPS55125233 A JP S55125233A JP 3371979 A JP3371979 A JP 3371979A JP 3371979 A JP3371979 A JP 3371979A JP S55125233 A JPS55125233 A JP S55125233A
Authority
JP
Japan
Prior art keywords
steel pipe
cooling water
hardening
cooling
water
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
JP3371979A
Other languages
Japanese (ja)
Other versions
JPS5846532B2 (en
Inventor
Keiichiro Takitani
Akio Ejima
Sadao Hasuno
Yukihiro Mimura
Toshihisa Tagami
Koichi Nakajima
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 JP3371979A priority Critical patent/JPS5846532B2/en
Publication of JPS55125233A publication Critical patent/JPS55125233A/en
Publication of JPS5846532B2 publication Critical patent/JPS5846532B2/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
    • C21D9/085—Cooling or quenching

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 Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

PURPOSE:To evenly cool the inside surface of a steel pipe over its entire surface and prevent the occurrence of uneven hardening by disposing a nozzle for feeding water into steel pipe, near one end of the steel pipe in a water tank and disposing a discharge nozzle near the other end at the time of hardening the steel pipe by water. CONSTITUTION:The steel pipe 11 having been heated to its hardening temperature is immersed in water in a cooling tank 12 in such a manner that its entire part submerges. Cooling water is jetted out into the steel pipe 11 from the cooling water jet nozzle 14 close to one end of the steel pipe 11. A cooling water discharge nozzle 15 is provided to the cooling water tank wall on the opposite side of the steel pipe 11. The cooling water jetted out from the jet nozzle 14 cools the inside surface of the steel pipe 11 and is forcefully suction-discharged from the discharge nozzle 15 and therefore it passes the inside of the steel pipe 11 at an even fast speed, whereby the inside surface of the steel pipe 11 is evenly cooled and hardened. Together with the cooling and hardening of the outside surface of the steel pipe 11 by the cooling water in the cooling water tank 12, the steel pipe 11 is hardened evenly without unevenness over its entire length.
JP3371979A 1979-03-22 1979-03-22 Immersion hardening method for steel pipes Expired JPS5846532B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3371979A JPS5846532B2 (en) 1979-03-22 1979-03-22 Immersion hardening method for steel pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3371979A JPS5846532B2 (en) 1979-03-22 1979-03-22 Immersion hardening method for steel pipes

Publications (2)

Publication Number Publication Date
JPS55125233A true JPS55125233A (en) 1980-09-26
JPS5846532B2 JPS5846532B2 (en) 1983-10-17

Family

ID=12394202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3371979A Expired JPS5846532B2 (en) 1979-03-22 1979-03-22 Immersion hardening method for steel pipes

Country Status (1)

Country Link
JP (1) JPS5846532B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012029268A1 (en) * 2010-09-02 2012-03-08 住友金属工業株式会社 Steel pipe quenching method and steel pipe manufacturing method using same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60149352U (en) * 1984-03-13 1985-10-03 オルゴ株式会社 electric pot
JPH0325709Y2 (en) * 1984-09-18 1991-06-04

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012029268A1 (en) * 2010-09-02 2012-03-08 住友金属工業株式会社 Steel pipe quenching method and steel pipe manufacturing method using same
JP2012052197A (en) * 2010-09-02 2012-03-15 Sumitomo Metal Ind Ltd Method for quenching steel pipe and method of producing steel pipe using the quenching method
CN103080345A (en) * 2010-09-02 2013-05-01 新日铁住金株式会社 Steel pipe quenching method and steel pipe manufacturing method using same
US9267186B2 (en) 2010-09-02 2016-02-23 Nippon Steel & Sumitomo Metal Corporation Method for quenching steel pipe and method for producing steel pipe using the same
EP2612932A4 (en) * 2010-09-02 2017-08-09 Nippon Steel & Sumitomo Metal Corporation Steel pipe quenching method and steel pipe manufacturing method using same

Also Published As

Publication number Publication date
JPS5846532B2 (en) 1983-10-17

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