JPS51112715A - Cooling method and apparatus for sub-zero treatment - Google Patents

Cooling method and apparatus for sub-zero treatment

Info

Publication number
JPS51112715A
JPS51112715A JP3874975A JP3874975A JPS51112715A JP S51112715 A JPS51112715 A JP S51112715A JP 3874975 A JP3874975 A JP 3874975A JP 3874975 A JP3874975 A JP 3874975A JP S51112715 A JPS51112715 A JP S51112715A
Authority
JP
Japan
Prior art keywords
sub
cooling method
zero treatment
treatment
zero
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
JP3874975A
Other languages
Japanese (ja)
Other versions
JPS5329284B2 (en
Inventor
Kusuo Miyagawa
Shigeo Nagata
Shojushi Okabe
Kunitaro Murachi
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
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP3874975A priority Critical patent/JPS51112715A/en
Publication of JPS51112715A publication Critical patent/JPS51112715A/en
Publication of JPS5329284B2 publication Critical patent/JPS5329284B2/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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/04—Hardening by cooling below 0 degrees Celsius

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)

Abstract

PURPOSE:Sub-zero treatment of steel and others with short operation time and simple treatment operation.
JP3874975A 1975-03-31 1975-03-31 Cooling method and apparatus for sub-zero treatment Granted JPS51112715A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3874975A JPS51112715A (en) 1975-03-31 1975-03-31 Cooling method and apparatus for sub-zero treatment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3874975A JPS51112715A (en) 1975-03-31 1975-03-31 Cooling method and apparatus for sub-zero treatment

Publications (2)

Publication Number Publication Date
JPS51112715A true JPS51112715A (en) 1976-10-05
JPS5329284B2 JPS5329284B2 (en) 1978-08-19

Family

ID=12533939

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3874975A Granted JPS51112715A (en) 1975-03-31 1975-03-31 Cooling method and apparatus for sub-zero treatment

Country Status (1)

Country Link
JP (1) JPS51112715A (en)

Also Published As

Publication number Publication date
JPS5329284B2 (en) 1978-08-19

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