JPS56152929A - Method and device for heat treatment of rail head part - Google Patents

Method and device for heat treatment of rail head part

Info

Publication number
JPS56152929A
JPS56152929A JP5698180A JP5698180A JPS56152929A JP S56152929 A JPS56152929 A JP S56152929A JP 5698180 A JP5698180 A JP 5698180A JP 5698180 A JP5698180 A JP 5698180A JP S56152929 A JPS56152929 A JP S56152929A
Authority
JP
Japan
Prior art keywords
members
rails
rail
head parts
parts
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
JP5698180A
Other languages
Japanese (ja)
Other versions
JPS6030726B2 (en
Inventor
Toshiji Irie
Tetsushige Ide
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 JP5698180A priority Critical patent/JPS6030726B2/en
Publication of JPS56152929A publication Critical patent/JPS56152929A/en
Publication of JPS6030726B2 publication Critical patent/JPS6030726B2/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
    • C21D9/04—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails

Abstract

PURPOSE:To uniformalize the shape of the quench hardened layer of the head parts of rails by preheating the connecting members connecting the end parts of the rails to themselves to a prescribed temp., then passing the connected rail row to a heating zone then to a water-cooling zone. CONSTITUTION:When the leading end of the connecting members 1' of a rail row connecting the end parts of rails 2 to themselves by means of the members 1' arrives ar the position of a detecting switch 8, the heating by a burner 9 is accomplished for the members 1' having arrived at the position of the burner 9 based on the on signal of the switch 8, whereby the members 1' are preheated to prescribed temp. Hence, even if the members 1' are charged into a hardening furnace 4, they will not lower the furnace temp. and will not absorb the heat of the rails 2; therefore the entire part of the rail head parts is uniformly heated. Thence, the rail row is passed through a water cooling device then through a tempering furnace 6, whereby the head parts of the rails 2 are heat treated, and the rail 2 having a uniform shape of the quench hardened layer over the entire part of its length in the head parts is produced.
JP5698180A 1980-04-28 1980-04-28 Rail head heat treatment method and device Expired JPS6030726B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5698180A JPS6030726B2 (en) 1980-04-28 1980-04-28 Rail head heat treatment method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5698180A JPS6030726B2 (en) 1980-04-28 1980-04-28 Rail head heat treatment method and device

Publications (2)

Publication Number Publication Date
JPS56152929A true JPS56152929A (en) 1981-11-26
JPS6030726B2 JPS6030726B2 (en) 1985-07-18

Family

ID=13042672

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5698180A Expired JPS6030726B2 (en) 1980-04-28 1980-04-28 Rail head heat treatment method and device

Country Status (1)

Country Link
JP (1) JPS6030726B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100339893B1 (en) * 2000-01-31 2002-06-10 백창기 Method and apparatus for heat treated slack quenching of tongue rails
KR100366547B1 (en) * 2000-01-31 2002-12-31 아이앤아이스틸 주식회사 Method and apparatus for heat treated slack quenching of rails

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100339893B1 (en) * 2000-01-31 2002-06-10 백창기 Method and apparatus for heat treated slack quenching of tongue rails
KR100366547B1 (en) * 2000-01-31 2002-12-31 아이앤아이스틸 주식회사 Method and apparatus for heat treated slack quenching of rails

Also Published As

Publication number Publication date
JPS6030726B2 (en) 1985-07-18

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