JPS5713170A - Gas carburizing method - Google Patents

Gas carburizing method

Info

Publication number
JPS5713170A
JPS5713170A JP8757680A JP8757680A JPS5713170A JP S5713170 A JPS5713170 A JP S5713170A JP 8757680 A JP8757680 A JP 8757680A JP 8757680 A JP8757680 A JP 8757680A JP S5713170 A JPS5713170 A JP S5713170A
Authority
JP
Japan
Prior art keywords
furnace
gaseous atmosphere
equil
analyzed
amount
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
JP8757680A
Other languages
Japanese (ja)
Other versions
JPS641547B2 (en
Inventor
Saburo Yamagata
Kazuyoshi Kawada
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.)
ORIENTAL ENJINIARINGU KK
Oriental Engineering Co Ltd
Original Assignee
ORIENTAL ENJINIARINGU KK
Oriental Engineering Co 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 ORIENTAL ENJINIARINGU KK, Oriental Engineering Co Ltd filed Critical ORIENTAL ENJINIARINGU KK
Priority to JP8757680A priority Critical patent/JPS5713170A/en
Publication of JPS5713170A publication Critical patent/JPS5713170A/en
Publication of JPS641547B2 publication Critical patent/JPS641547B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

PURPOSE:To control the equil. carbon concn. of gaseous atmosphere constant by correcting the amount of CO2 corresponding to a desired equil. carbon concn. in accordance with the change in the content of CO in the gaseous atmosphere in a carburizing furnace and the temp. in the furnace. CONSTITUTION:A steel made part W to be carburized is put into a carburizing furnace 1, and after the inside of the furnace is evactuated, gaseous nitrogen is put therein. Next, an org. liquid agent CH3OH is injected dropwise and is decomposed in the furnace, after which the contents of CO2 and CO are analyzed with an analyzer 6. The signals of the analyzed CO value and the in-furnace temp. by a thermocuple 7 are fed to an arithmetic device 10. A desired carbon concn. of the steel material surface is put from a setter 8 into the device 10, and the target amount of CO2 corresponding to the equil. carbon concn. of the gaseous atmosphere is calculated and is inputted as a set value for a CO2 controller 9. The CO2 in the gaseous atmosphere is analyzed with an analyzer 11, and is fed back to the controller 9. The controller 9 compares the target CO2 amount signal and the analyzed CO2 signal, and operates a control valve 4 by the deviation signal thereof, thereby feeding a correct amount of enrich gas into the furnace and maintaining the equil. carbon content in the gaseous atmosphere in the furnace constant.
JP8757680A 1980-06-27 1980-06-27 Gas carburizing method Granted JPS5713170A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8757680A JPS5713170A (en) 1980-06-27 1980-06-27 Gas carburizing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8757680A JPS5713170A (en) 1980-06-27 1980-06-27 Gas carburizing method

Publications (2)

Publication Number Publication Date
JPS5713170A true JPS5713170A (en) 1982-01-23
JPS641547B2 JPS641547B2 (en) 1989-01-11

Family

ID=13918823

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8757680A Granted JPS5713170A (en) 1980-06-27 1980-06-27 Gas carburizing method

Country Status (1)

Country Link
JP (1) JPS5713170A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57203768A (en) * 1981-05-08 1982-12-14 Gen Signal Corp Steel vacuum cementation
JP2004068154A (en) * 2002-08-01 2004-03-04 Ipsen Internatl Gmbh Method and device for blackening member

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04101655U (en) * 1991-02-08 1992-09-02 天龍工業株式会社 seat with armrests

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57203768A (en) * 1981-05-08 1982-12-14 Gen Signal Corp Steel vacuum cementation
JP2004068154A (en) * 2002-08-01 2004-03-04 Ipsen Internatl Gmbh Method and device for blackening member

Also Published As

Publication number Publication date
JPS641547B2 (en) 1989-01-11

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