JPS5716164A - Gas cementation treatment - Google Patents

Gas cementation treatment

Info

Publication number
JPS5716164A
JPS5716164A JP8901180A JP8901180A JPS5716164A JP S5716164 A JPS5716164 A JP S5716164A JP 8901180 A JP8901180 A JP 8901180A JP 8901180 A JP8901180 A JP 8901180A JP S5716164 A JPS5716164 A JP S5716164A
Authority
JP
Japan
Prior art keywords
gas
analysed
value
amount
carbon concn
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
JP8901180A
Other languages
Japanese (ja)
Other versions
JPS6411709B2 (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 JP8901180A priority Critical patent/JPS5716164A/en
Publication of JPS5716164A publication Critical patent/JPS5716164A/en
Publication of JPS6411709B2 publication Critical patent/JPS6411709B2/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 subject a steel material to gas cementaion in a highly precise manner under a less dangerous condition so as to obtain uniform quality by a method wherein CO2 and CO of an atmospheric gas in a heat treating furnace is analysed and introduction of an enrich gas is controlled so as to keep an equilibrium carbon concn. constant. CONSTITUTION:An inside of a heat treating furnace in which a steel material treating article W is kept under a hermetically sealed condition and evacuated by a vacuum pump and, thereafter, nitrogen gas is introduced thereinto from a pipe passage 2 to restore a pressure to a constant pressure. Subsequently, a hydrocarbon and an oxidizing gas are introduced from a pipe passage 3 to form an atmospheric gas with a predetermined equilibrium carbon concn. The resultant atmospheric gas is analysed by a CO analyser 6 and a CO2 analyser 11. By caluculation from the resultant CO amount analysed value, a temp. in the furnace measured by a thermocouple 7 and a desired carbon concn. on a surface of the treating article W set by a carbon concn. setting instrument 8, an operation apparatus 10 calculates an objective CO2 amount and the calculated value is applied to a CO2 controller 9 as a set value. The controller 9 adjusts a controll valve 4 by a deviation signal of the CO2 analysed value and an objective value to increase and decrease an amount of an enrich gas.
JP8901180A 1980-06-30 1980-06-30 Gas cementation treatment Granted JPS5716164A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8901180A JPS5716164A (en) 1980-06-30 1980-06-30 Gas cementation treatment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8901180A JPS5716164A (en) 1980-06-30 1980-06-30 Gas cementation treatment

Publications (2)

Publication Number Publication Date
JPS5716164A true JPS5716164A (en) 1982-01-27
JPS6411709B2 JPS6411709B2 (en) 1989-02-27

Family

ID=13958948

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8901180A Granted JPS5716164A (en) 1980-06-30 1980-06-30 Gas cementation treatment

Country Status (1)

Country Link
JP (1) JPS5716164A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59118880A (en) * 1982-12-27 1984-07-09 Nissan Motor Co Ltd Method for dropping and raising temperature of gas carburizing furnace and for regulating internal atmosphere of said furnace
JP2000328224A (en) * 1999-05-24 2000-11-28 Toho Gas Co Ltd Gas carburization method
JP2002363726A (en) * 2001-06-05 2002-12-18 Dowa Mining Co Ltd Carburizing treatment method and apparatus therefor
JP2002363727A (en) * 2001-06-05 2002-12-18 Dowa Mining Co Ltd Carburizing method and device thereof
EP1306462A2 (en) * 2001-10-23 2003-05-02 Schwäbische Härtetechnik Ulm GmbH Process and apparatus for measuring and controlling the carburising atmosphere in a vacuum carburising installation
US8747572B2 (en) 2005-12-08 2014-06-10 Ntn Corporation Carbonitriding method, machinery component fabrication method, and machinery component

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59118880A (en) * 1982-12-27 1984-07-09 Nissan Motor Co Ltd Method for dropping and raising temperature of gas carburizing furnace and for regulating internal atmosphere of said furnace
JP2000328224A (en) * 1999-05-24 2000-11-28 Toho Gas Co Ltd Gas carburization method
JP2002363726A (en) * 2001-06-05 2002-12-18 Dowa Mining Co Ltd Carburizing treatment method and apparatus therefor
JP2002363727A (en) * 2001-06-05 2002-12-18 Dowa Mining Co Ltd Carburizing method and device thereof
EP1306462A2 (en) * 2001-10-23 2003-05-02 Schwäbische Härtetechnik Ulm GmbH Process and apparatus for measuring and controlling the carburising atmosphere in a vacuum carburising installation
EP1306462A3 (en) * 2001-10-23 2003-10-29 Schwäbische Härtetechnik Ulm GmbH Process and apparatus for measuring and controlling the carburising atmosphere in a vacuum carburising installation
US8747572B2 (en) 2005-12-08 2014-06-10 Ntn Corporation Carbonitriding method, machinery component fabrication method, and machinery component

Also Published As

Publication number Publication date
JPS6411709B2 (en) 1989-02-27

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