JPS5528356A - Gas soft-nitriding method - Google Patents

Gas soft-nitriding method

Info

Publication number
JPS5528356A
JPS5528356A JP10120478A JP10120478A JPS5528356A JP S5528356 A JPS5528356 A JP S5528356A JP 10120478 A JP10120478 A JP 10120478A JP 10120478 A JP10120478 A JP 10120478A JP S5528356 A JPS5528356 A JP S5528356A
Authority
JP
Japan
Prior art keywords
nitriding
zone
zones
temp
gas
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
JP10120478A
Other languages
Japanese (ja)
Other versions
JPS5751465B2 (en
Inventor
Seiichi Kakuwa
Toshihiko Hattori
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
Toyo Kogyo 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 Mazda Motor Corp, Toyo Kogyo Co Ltd filed Critical Mazda Motor Corp
Priority to JP10120478A priority Critical patent/JPS5528356A/en
Publication of JPS5528356A publication Critical patent/JPS5528356A/en
Publication of JPS5751465B2 publication Critical patent/JPS5751465B2/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
    • C23C8/34—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 more than one step
    • 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
    • C23C8/24—Nitriding
    • C23C8/26—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 utilize the first nitriding zone effectively, by operating the first nitriding zone on inlet side of a gas soft-nitriding furnace composed of plural nitriding zones at a temp. equal to those of other zones, and by supplying NH3 gas for nitriding excessively to the first zone. CONSTITUTION:The material 2 to be nitrided is passed through a front chamber 10, and the first 5-the fifth 9 nitriding zones, where it is nitrided, and taken out through a cooling chamber 11 to outside of the furnace. To every zones is introduced a mixed gas of a carrier RX and NH3 for nitriding through branched paths 15I-15V maintained at a temp. 550-630 deg.C. The first zone 5 has been formerly used as heating zone, and the heater has been kept at a high temp. 700-800 deg.C, so that NH3 is thermally decomposed and is decreased in quantity, causing no nitriding. Introduction of excessive ammonia through the by-path 18 to the first zone 5 in order to replenish the NH3 consumed makes possible utilization of the first zone 5 as a nitriding zone, and increases nitriding efficiency.
JP10120478A 1978-08-18 1978-08-18 Gas soft-nitriding method Granted JPS5528356A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10120478A JPS5528356A (en) 1978-08-18 1978-08-18 Gas soft-nitriding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10120478A JPS5528356A (en) 1978-08-18 1978-08-18 Gas soft-nitriding method

Publications (2)

Publication Number Publication Date
JPS5528356A true JPS5528356A (en) 1980-02-28
JPS5751465B2 JPS5751465B2 (en) 1982-11-02

Family

ID=14294392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10120478A Granted JPS5528356A (en) 1978-08-18 1978-08-18 Gas soft-nitriding method

Country Status (1)

Country Link
JP (1) JPS5528356A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0662982U (en) * 1993-02-12 1994-09-06 関東日邦ミシン株式会社 A edging jig and a sewing machine equipped with the edging jig

Also Published As

Publication number Publication date
JPS5751465B2 (en) 1982-11-02

Similar Documents

Publication Publication Date Title
EP1160838A3 (en) Heat treatment system and method
UA50853C2 (en) Process heater of flameless combustion chamber and method for providing heat for endothermal process by means of such a heater
ES8504076A1 (en) Process for the production of phosphorus pentoxide and, should the occasion arise, of phosphoric acid using reaction heat.
JPS6451618A (en) Microcrystalline silicon carbide semiconductor film and manufacture thereof
JPS5528356A (en) Gas soft-nitriding method
CA2087850A1 (en) Process and device for the reduction annealing of powdered iron
US3343518A (en) High temperature furnace
GB1489106A (en) Hardening of steel workpieces
ES8102989A1 (en) Dry reaction process of asbestos tailings and ammonium sulfate
US2041769A (en) Nitriding process
JPS55162403A (en) Manufacture of hydrogen chloride and ammonia from ammonium chloride as starting material
JPS59215477A (en) Method and furnace for vacuum carburization
ES362288A1 (en) Process and apparatus for internally nitriding tubes
JPS5524988A (en) Process for feeding gas into gas soft-nitriding furnace
JPS5614401A (en) Alcohol reforming apparatus
JPS5698468A (en) Burning-out method in furnace
MY117221A (en) Process for the nondestructive heating and supply of hot ammonia or hot ammonia containing feed gas
JPS5675565A (en) Manufacturing method of thin film
JPS55130805A (en) Manufacture of zinc selenide
Dimitrov Studies of the Change in the Properties of 40 Kh Steel after Low Temperature Chemical and Thermal Treatment
KR20000026514A (en) Device for atmospheric pressure chemical vapor deposition
JPS56152799A (en) Treatment of waste matter containing cyanide
JPS57207541A (en) Production of exothermic type gas
Tonchev et al. Carburization in a Glow Discharge.(Retroactive Coverage)
JPS56109898A (en) Gaseous phase growing method for magnespinel