JPS56169769A - Carbonitriding method - Google Patents

Carbonitriding method

Info

Publication number
JPS56169769A
JPS56169769A JP7523980A JP7523980A JPS56169769A JP S56169769 A JPS56169769 A JP S56169769A JP 7523980 A JP7523980 A JP 7523980A JP 7523980 A JP7523980 A JP 7523980A JP S56169769 A JPS56169769 A JP S56169769A
Authority
JP
Japan
Prior art keywords
fluidized bed
heated
treated
nozzles
forming
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
JP7523980A
Other languages
Japanese (ja)
Other versions
JPS6225745B2 (en
Inventor
Daburu Reinorudoson Aaru
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.)
Toray Engineering Co Ltd
Original Assignee
Toray 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 Toray Engineering Co Ltd filed Critical Toray Engineering Co Ltd
Priority to JP7523980A priority Critical patent/JPS56169769A/en
Publication of JPS56169769A publication Critical patent/JPS56169769A/en
Publication of JPS6225745B2 publication Critical patent/JPS6225745B2/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
    • 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
    • C23C8/28—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 more than one element being applied in one step
    • C23C8/30—Carbo-nitriding
    • C23C8/32—Carbo-nitriding 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 prevent a body to be treated from being deformed and enhance the surface hardness thereof by a method wherein the upper surface of a fluidized bed comprised of a flowing particulate material is heated by a carbonitriding gas mixture so that the body to be treated being in the fluidized bed is heated to a predetermined temperature. CONSTITUTION:A gas for forming an atmosphere consisting of a mixture of N2, NH3 and CO2 with CH4 or C3H8 is supplied into a pressure chamber 5 of a furnace 1 to fluidize alumina particles on a diffusing plate 6, thereby forming the fluidized bed. On the other hand, a fuel is jetted from nozzles 8a, 8b and is burnt by mixing it with air supplied from nozzles 9a, 9b, whereby the fluidized bed is heated to 600-700 deg.C. As a result, the body to be treated which is embedded in the fluidized bed is heated uniformly to 600-700 deg.C. Accordingly, since the body is carbonitrided in the temperature zone of not higher than Ac1 point, a porduct free from deformation and having a high surface hardness can be obtained.
JP7523980A 1980-06-03 1980-06-03 Carbonitriding method Granted JPS56169769A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7523980A JPS56169769A (en) 1980-06-03 1980-06-03 Carbonitriding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7523980A JPS56169769A (en) 1980-06-03 1980-06-03 Carbonitriding method

Publications (2)

Publication Number Publication Date
JPS56169769A true JPS56169769A (en) 1981-12-26
JPS6225745B2 JPS6225745B2 (en) 1987-06-04

Family

ID=13570460

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7523980A Granted JPS56169769A (en) 1980-06-03 1980-06-03 Carbonitriding method

Country Status (1)

Country Link
JP (1) JPS56169769A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58174572A (en) * 1982-04-02 1983-10-13 Oriental Eng Kk Gas soft nitriding method
JPS6369960A (en) * 1986-09-08 1988-03-30 エレクトロシユメルツヴエルク・ケンプテン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Method and apparatus for hardening surface layer of works
FR2615868A1 (en) * 1987-05-30 1988-12-02 Schwing Ewald PROCESS FOR THE HEAT TREATMENT OF METAL PARTS IN A FLUIDIZED LAYER CROSSED BY A GAS
JPH01298146A (en) * 1988-05-26 1989-12-01 Toray Eng Co Ltd Treatment for metal surface
JP2010133526A (en) * 2008-12-05 2010-06-17 F C C:Kk Driven-side rotating body, clutch device with the driven-side rotating body, method for manufacturing the driven-side rotating device, and method for manufacturing the clutch device with the driven-side rotating body

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5050210A (en) * 1973-08-09 1975-05-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5050210A (en) * 1973-08-09 1975-05-06

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58174572A (en) * 1982-04-02 1983-10-13 Oriental Eng Kk Gas soft nitriding method
JPS6349748B2 (en) * 1982-04-02 1988-10-05 Oriental Engineering Co
JPS6369960A (en) * 1986-09-08 1988-03-30 エレクトロシユメルツヴエルク・ケンプテン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Method and apparatus for hardening surface layer of works
FR2615868A1 (en) * 1987-05-30 1988-12-02 Schwing Ewald PROCESS FOR THE HEAT TREATMENT OF METAL PARTS IN A FLUIDIZED LAYER CROSSED BY A GAS
JPH01298146A (en) * 1988-05-26 1989-12-01 Toray Eng Co Ltd Treatment for metal surface
JP2010133526A (en) * 2008-12-05 2010-06-17 F C C:Kk Driven-side rotating body, clutch device with the driven-side rotating body, method for manufacturing the driven-side rotating device, and method for manufacturing the clutch device with the driven-side rotating body

Also Published As

Publication number Publication date
JPS6225745B2 (en) 1987-06-04

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