JPS55107724A - Subzero treating method - Google Patents

Subzero treating method

Info

Publication number
JPS55107724A
JPS55107724A JP1306279A JP1306279A JPS55107724A JP S55107724 A JPS55107724 A JP S55107724A JP 1306279 A JP1306279 A JP 1306279A JP 1306279 A JP1306279 A JP 1306279A JP S55107724 A JPS55107724 A JP S55107724A
Authority
JP
Japan
Prior art keywords
cooling medium
accomplished
subzero treatment
treated
cooling
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.)
Pending
Application number
JP1306279A
Other languages
Japanese (ja)
Inventor
Hiroshi Hoshino
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.)
Toyo Sanso Ltd
Original Assignee
Toyo Sanso 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 Toyo Sanso Ltd filed Critical Toyo Sanso Ltd
Priority to JP1306279A priority Critical patent/JPS55107724A/en
Publication of JPS55107724A publication Critical patent/JPS55107724A/en
Pending 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)
  • Control Of Heat Treatment Processes (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

PURPOSE:To let subzero treatment be accomplished with good efficiency by setting the flow control of cooling medium and its total use amount and timers at the intermittent jet injection of cooling medium according to the form of the material to be cooled in the subzero treatment of forged steel hardened roll. CONSTITUTION:The material to be treated 3 such as forged steel hardened roll is put in a cooling cell 1 for subzero treatment and cooling medium such as liquid nitrogen is jet-injected from the multiple injection nozzles 5 attached to a cooling medium feed pipe 6. Plural force circulators 16 are provided in the cell to spirally blow the refrigerating air to the outside of the material to be treated 3 and their operations are accomplished by opening and closing of a gate valve 7 by an automatic controller 12, whereby the temperature in the cell is controlled. In this case, in order to evenly cool the material to the target temperature and perform efficient utilization of the cooling medium, the cooling treatment is accomplished based on the time program of the use amount of the cooling medium and the injection of cooling medium according to the form of the material to be treated, whereby the subzero treatment may be efficiently accomplished without waste of liquid nitrogen.
JP1306279A 1979-02-07 1979-02-07 Subzero treating method Pending JPS55107724A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1306279A JPS55107724A (en) 1979-02-07 1979-02-07 Subzero treating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1306279A JPS55107724A (en) 1979-02-07 1979-02-07 Subzero treating method

Publications (1)

Publication Number Publication Date
JPS55107724A true JPS55107724A (en) 1980-08-19

Family

ID=11822641

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1306279A Pending JPS55107724A (en) 1979-02-07 1979-02-07 Subzero treating method

Country Status (1)

Country Link
JP (1) JPS55107724A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103468918A (en) * 2013-09-29 2013-12-25 宝钢轧辊科技有限责任公司 Subzero treatment method for large-diameter cold rolling work roller and copious cooling box thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103468918A (en) * 2013-09-29 2013-12-25 宝钢轧辊科技有限责任公司 Subzero treatment method for large-diameter cold rolling work roller and copious cooling box thereof

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