JPS5477213A - Bright annealing apparatus - Google Patents

Bright annealing apparatus

Info

Publication number
JPS5477213A
JPS5477213A JP14386477A JP14386477A JPS5477213A JP S5477213 A JPS5477213 A JP S5477213A JP 14386477 A JP14386477 A JP 14386477A JP 14386477 A JP14386477 A JP 14386477A JP S5477213 A JPS5477213 A JP S5477213A
Authority
JP
Japan
Prior art keywords
chamber
bright
annealing
rapid cooling
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
JP14386477A
Other languages
Japanese (ja)
Inventor
Tatsuro Seki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14386477A priority Critical patent/JPS5477213A/en
Publication of JPS5477213A publication Critical patent/JPS5477213A/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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/613—Gases; Liquefied or solidified normally gaseous material

Abstract

PURPOSE:Material is heat-tempered in vacuum and then sprayed with gasified liquid nitrogen to thereby achieve bright-annealing by rapid cooling. CONSTITUTION:In a heat chamber 1 which is evacuated by a vacuum pump, a material 3 to be treated is disposed and heated by a heater 4 for bright-annealing. Then, open a door 9, lower a lift 7, place the material 3 in a cooling chamber 2 and close the door 9. Liquid nitrogen is conducted from a container 12 into a gasifying chamber 11, and gasified nitrogen is jetted through a nozzle 10 into the cooling chamber 2. The gasfied cool nitrogen is sprayed onto the material 3 by a fan 6 in the chamber 2 to effect rapid cooling of bright-annealing for the material. The process of rapid cooling bright-annealing can be applied effectively to a thick material, and further, stainless steel can be effectively prevented from sensitization by action of rapid cooling.
JP14386477A 1977-12-02 1977-12-02 Bright annealing apparatus Pending JPS5477213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14386477A JPS5477213A (en) 1977-12-02 1977-12-02 Bright annealing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14386477A JPS5477213A (en) 1977-12-02 1977-12-02 Bright annealing apparatus

Publications (1)

Publication Number Publication Date
JPS5477213A true JPS5477213A (en) 1979-06-20

Family

ID=15348750

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14386477A Pending JPS5477213A (en) 1977-12-02 1977-12-02 Bright annealing apparatus

Country Status (1)

Country Link
JP (1) JPS5477213A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63153143U (en) * 1987-03-27 1988-10-07
EP1842929A1 (en) * 2006-04-06 2007-10-10 Linde Aktiengesellschaft Sub-zero cabinet for in-line treatment of metals
CN108396124A (en) * 2018-02-06 2018-08-14 贵州大学 Simplicity improves double nozzle liquid nitrogen spray experiment devices of quenching velocity
CN109777925A (en) * 2019-01-08 2019-05-21 苏州腾凯金属材料有限公司 A kind of vacuum annealing method of air bag air outlet valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63153143U (en) * 1987-03-27 1988-10-07
JPH0544719Y2 (en) * 1987-03-27 1993-11-12
EP1842929A1 (en) * 2006-04-06 2007-10-10 Linde Aktiengesellschaft Sub-zero cabinet for in-line treatment of metals
CN108396124A (en) * 2018-02-06 2018-08-14 贵州大学 Simplicity improves double nozzle liquid nitrogen spray experiment devices of quenching velocity
CN108396124B (en) * 2018-02-06 2020-08-25 贵州大学 Double-nozzle liquid nitrogen injection experimental device capable of simply and conveniently improving quenching speed
CN109777925A (en) * 2019-01-08 2019-05-21 苏州腾凯金属材料有限公司 A kind of vacuum annealing method of air bag air outlet valve

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