JPS57207117A - Joining method for heat treated rail - Google Patents

Joining method for heat treated rail

Info

Publication number
JPS57207117A
JPS57207117A JP9215781A JP9215781A JPS57207117A JP S57207117 A JPS57207117 A JP S57207117A JP 9215781 A JP9215781 A JP 9215781A JP 9215781 A JP9215781 A JP 9215781A JP S57207117 A JPS57207117 A JP S57207117A
Authority
JP
Japan
Prior art keywords
heat treated
welding
weld zone
box
rail
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
JP9215781A
Other languages
Japanese (ja)
Other versions
JPS6364499B2 (en
Inventor
Masahiro Ueda
Hiroyuki Ichinose
Takao Noguchi
Shunichi Sugiyama
Makoto Muraki
Yoichi Tamura
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 Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP9215781A priority Critical patent/JPS57207117A/en
Publication of JPS57207117A publication Critical patent/JPS57207117A/en
Publication of JPS6364499B2 publication Critical patent/JPS6364499B2/ja
Granted 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
    • C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
    • C21D9/505—Cooling thereof

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)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

PURPOSE:To prevent the formation of a softened part by press-welding heat treated rails to each other and acceleratedly cooling the weld zone at once. CONSTITUTION:Rails heat treated by hardening-tempering or slack quenching are joined together by flash butt welding or gas welding. Immediately after the welding a deformable cooling box 2 is applied to the weld zone 10 (rail head), and the pressure of a liq. in the box 2 is regulated. The contact wall 1 of the box 2 is deformed along the external face of the rail, and both the parts are brought into contact with each other. THus, the austenite structure of the weld zone 10 is transformed into a fine pearlite structure to prevent the formation of a softened part.
JP9215781A 1981-06-17 1981-06-17 Joining method for heat treated rail Granted JPS57207117A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9215781A JPS57207117A (en) 1981-06-17 1981-06-17 Joining method for heat treated rail

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9215781A JPS57207117A (en) 1981-06-17 1981-06-17 Joining method for heat treated rail

Publications (2)

Publication Number Publication Date
JPS57207117A true JPS57207117A (en) 1982-12-18
JPS6364499B2 JPS6364499B2 (en) 1988-12-12

Family

ID=14046583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9215781A Granted JPS57207117A (en) 1981-06-17 1981-06-17 Joining method for heat treated rail

Country Status (1)

Country Link
JP (1) JPS57207117A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6256524A (en) * 1985-09-06 1987-03-12 Nippon Steel Corp Manufacture of high strength rail providing weldability
JP2007289970A (en) * 2006-04-21 2007-11-08 Nippon Steel Corp Flash butt welding method of rail
US20100170934A1 (en) * 2005-06-07 2010-07-08 University Of Utah Research Foundation Methods and systems for mitigating residual tensile stresses
WO2013161026A1 (en) * 2012-04-25 2013-10-31 Ｊｆｅスチール株式会社 Pearlite rail, flash butt welding method for pearlite rail, and method for manufacturing pearlite rail

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6256524A (en) * 1985-09-06 1987-03-12 Nippon Steel Corp Manufacture of high strength rail providing weldability
JPH0138853B2 (en) * 1985-09-06 1989-08-16 Nippon Steel Corp
US20100170934A1 (en) * 2005-06-07 2010-07-08 University Of Utah Research Foundation Methods and systems for mitigating residual tensile stresses
JP2007289970A (en) * 2006-04-21 2007-11-08 Nippon Steel Corp Flash butt welding method of rail
WO2013161026A1 (en) * 2012-04-25 2013-10-31 Ｊｆｅスチール株式会社 Pearlite rail, flash butt welding method for pearlite rail, and method for manufacturing pearlite rail

Also Published As

Publication number Publication date
JPS6364499B2 (en) 1988-12-12

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