JPS5524916A - Gas carbo-nitriding method - Google Patents
Gas carbo-nitriding methodInfo
- Publication number
- JPS5524916A JPS5524916A JP9539278A JP9539278A JPS5524916A JP S5524916 A JPS5524916 A JP S5524916A JP 9539278 A JP9539278 A JP 9539278A JP 9539278 A JP9539278 A JP 9539278A JP S5524916 A JPS5524916 A JP S5524916A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- gas
- treatment
- during
- period
- 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
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
- C23C8/24—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 hasten gas carbo-nitriding treatment by keeping the addition of NH3 from the beginning of treatment to the completing point of the hardening temperature-holding time and by penetrating and diffusing C at high temperatures mainly and N during a temperature-lowering period from a high temperature to hardening temperature and during the hardening temperature-holding period. CONSTITUTION:A carbon source such as CH4 gas, C3H8 gas, C4H10, etc., is kept adding during a 900 to 950 deg.C temperature treatment period, and NH3 gas is kept adding from the beginning of treatment to the end of the hardening temperature- holding time. And, the penetration and diffusion of C are made during the treatment at 900 to 950 deg.C for 1 to 10 hours and the penetration and diffusion of N are made a 0.5 to 3 hour-temperature-lowering period from the treatment temperature of 900 to 950 deg.C to the hardening temperature of 780 to 830 deg.C and during a 0.2 to 1-hour hardening temperature (780 to 830 deg.C)-holding period. Thus, it is possible to hasten gas carbo-nitriding treatment and also to save energy and gas used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9539278A JPS5524916A (en) | 1978-08-07 | 1978-08-07 | Gas carbo-nitriding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9539278A JPS5524916A (en) | 1978-08-07 | 1978-08-07 | Gas carbo-nitriding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5524916A true JPS5524916A (en) | 1980-02-22 |
Family
ID=14136366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9539278A Pending JPS5524916A (en) | 1978-08-07 | 1978-08-07 | Gas carbo-nitriding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5524916A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4496401A (en) * | 1981-10-15 | 1985-01-29 | Lucas Industries | Corrosion resistant steel components and method of manufacture thereof |
| JP2005200695A (en) * | 2004-01-14 | 2005-07-28 | Onex Corp | Gas carburizing method |
-
1978
- 1978-08-07 JP JP9539278A patent/JPS5524916A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4496401A (en) * | 1981-10-15 | 1985-01-29 | Lucas Industries | Corrosion resistant steel components and method of manufacture thereof |
| US4596611A (en) * | 1981-10-15 | 1986-06-24 | Lucas Industries | Corrosion resistant steel components and method of manufacture thereof |
| JP2005200695A (en) * | 2004-01-14 | 2005-07-28 | Onex Corp | Gas carburizing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES8105239A1 (en) | Process for the elimination of ammonia in coke plant waste waters | |
| JPS5524916A (en) | Gas carbo-nitriding method | |
| JPS5658963A (en) | Method and device for nitrified-layer stabilizing vapor coating processing | |
| ES400323A1 (en) | Process for the cracking of ammonium sulfate | |
| JPS5515622A (en) | Exhaust gas pretreating method | |
| JPS527818A (en) | Process for producing rust proofing, medium carbon, martensitic, chrom ium stainless steel | |
| JPS5249918A (en) | Combustion equipment with recycling of waste gas | |
| JPS5261122A (en) | Manufacturing method of high tension steel having low temperature tena city | |
| JPS5244075A (en) | Hot waste gas burning method | |
| JPS5684416A (en) | Steel quenching method | |
| JPS53102866A (en) | Treating method for waste gas comtaining ammonia | |
| JPS5413461A (en) | Treating method for combustion exhaust gas | |
| JPS51129870A (en) | An exhaust gas purification process | |
| JPS5223566A (en) | Process for vapor phase cracking of ammonia | |
| JPS55128577A (en) | Manufacture of carburizing-nitriding atmosphere gas | |
| JPS5712827A (en) | Manufacture of mo-bi-sb catalyst | |
| JPS5698468A (en) | Burning-out method in furnace | |
| JPS5333990A (en) | Adhering method for inorganic catalyst carrier pieces for treating exhaust gas | |
| Baskakov | Carburizing and Nitrocarburizing of Steel 18 KhGT in a Fluidized Bed | |
| IT1046717B (en) | Decomposing ammonia contained in effluent waters from coking plants - by passing "weak gas" through the effluent and then through regenerator | |
| FR2259061A2 (en) | Decomposing ammonia contained in effluent waters from coking plants - by passing "weak gas" through the effluent and then through regenerator | |
| JPS5779168A (en) | Heat treatment of low carbon steel | |
| JPS5280214A (en) | Preparation of annealed carbon steel wire | |
| JPS5397915A (en) | Steel making method in electric furnace | |
| Kuznetsov et al. | The Effect of the Parameters of Low-Temperature Nitrogen Case Hardening on the Mechanical Properties of the Hardened Layer |