ES404017A1 - Method of vacuum carburizing - Google Patents
Method of vacuum carburizingInfo
- Publication number
- ES404017A1 ES404017A1 ES404017A ES404017A ES404017A1 ES 404017 A1 ES404017 A1 ES 404017A1 ES 404017 A ES404017 A ES 404017A ES 404017 A ES404017 A ES 404017A ES 404017 A1 ES404017 A1 ES 404017A1
- Authority
- ES
- Spain
- Prior art keywords
- carbon
- chamber
- article
- vapor
- 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.)
- Expired
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
- C23C8/08—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)
- Chemical Vapour Deposition (AREA)
Abstract
A method of carbocementing a metal article in a subatmospheric environment to produce a preselected amount of surface absorbed carbon and a diffuse carbon gradient in said article, comprising the steps of heating the article in a heating chamber in a subatmospheric environment in removing adsorbed gases and other impurities from said article and cleaning the surfaces thereof, periodically introducing a carbon source in said chamber, and then evacuating said chamber to generate one or more impulses from the source carbon in said chamber to remove any unwanted residual reactive products produced by the carbon source and promote the effective circulation of carbon vapor around said article, each of said impulses including filling the chamber with a carbocementation gas up to a pressure that is maintained in high conditions tmospheric, defining the carbonation gas as the carbon source and forming carbon vapor and residual reagents in said chamber after being admitted to it, each pulse including the removal of residual reagents from the chamber after each filling operation to admit the carbocementation gas to said chamber, controlling the amount of carbocementation gas admitted to said heating chamber during each filling operation in relation to the partial pressure of carbon vapor in said chamber, in which the partial pressure of the vapor is maintained of carbon at a value between zero and the saturation point of carbon vapor within the chamber, inclusive, so that the absorption and diffusion of carbon vapor in said article is obtained at a controlled speed to produce a uniform coating of a preselected carbon potential in that article. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15595071A | 1971-06-23 | 1971-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES404017A1 true ES404017A1 (en) | 1975-11-16 |
Family
ID=22557435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES404017A Expired ES404017A1 (en) | 1971-06-23 | 1972-06-19 | Method of vacuum carburizing |
Country Status (12)
| Country | Link |
|---|---|
| US (2) | US3796615A (en) |
| JP (1) | JPS5129703B1 (en) |
| CA (1) | CA969841A (en) |
| CS (1) | CS168596B2 (en) |
| DE (1) | DE2216688C3 (en) |
| ES (1) | ES404017A1 (en) |
| FR (1) | FR2154398B1 (en) |
| GB (1) | GB1382075A (en) |
| IL (1) | IL38822A (en) |
| IT (1) | IT959314B (en) |
| SE (1) | SE383001B (en) |
| SU (1) | SU663316A3 (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4030712A (en) * | 1975-02-05 | 1977-06-21 | Alco Standard Corporation | Method and apparatus for circulating a heat treating gas |
| US4160680A (en) * | 1976-11-05 | 1979-07-10 | Sola Basic Industries, Inc. | Vacuum carburizing |
| US4152177A (en) * | 1977-02-03 | 1979-05-01 | General Motors Corporation | Method of gas carburizing |
| US4191598A (en) * | 1978-08-21 | 1980-03-04 | Midland-Ross Corporation | Jet recirculation method for vacuum carburizing |
| GB2076023B (en) * | 1980-05-02 | 1983-08-03 | Air Prod & Chem | Gas carburising |
| US4386973A (en) | 1981-05-08 | 1983-06-07 | General Signal Corporation | Vacuum carburizing steel |
| FR2678287B1 (en) * | 1991-06-26 | 1993-10-29 | Etudes Constructions Mecaniques | LOW PRESSURE CEMENTATION PROCESS AND FURNACE. |
| FR2681332B1 (en) * | 1991-09-13 | 1994-06-10 | Innovatique Sa | METHOD AND DEVICE FOR CEMENTING STEEL IN A LOW PRESSURE ATMOSPHERE. |
| ATE203063T1 (en) † | 1995-03-29 | 2001-07-15 | Jh Corp | METHOD AND FOR VACUUM CARBURING, USE OF A VACUUM CARBURING APPARATUS AND CARBURIZED STEEL PRODUCTS |
| DE59704123D1 (en) † | 1997-06-03 | 2001-08-30 | Ipsen Int Gmbh | Process for carburizing metallic workpieces in a vacuum furnace |
| DE10118494C2 (en) * | 2001-04-04 | 2003-12-11 | Aichelin Gesmbh Moedling | Process for low pressure carbonitriding of steel parts |
| JP5428031B2 (en) * | 2001-06-05 | 2014-02-26 | Ｄｏｗａサーモテック株式会社 | Carburizing method and apparatus |
| US7276204B2 (en) * | 2001-06-05 | 2007-10-02 | Dowa Thermotech Co., Ltd. | Carburization treatment method and carburization treatment apparatus |
| DE10232432A1 (en) * | 2002-07-17 | 2004-01-29 | Linde Ag | Vacuum carburizing method and apparatus |
| US7195177B2 (en) * | 2003-06-18 | 2007-03-27 | Raytheon Company | Method and apparatus for humidity control within a housing |
| EP2541179A3 (en) * | 2005-11-23 | 2014-09-24 | Surface Combustion, Inc. | Gas generator for an atmospheric furnace for treating one or more articles |
| JP4458079B2 (en) * | 2006-09-27 | 2010-04-28 | 株式会社Ｉｈｉ | Vacuum carburizing equipment |
| JP4458107B2 (en) | 2007-03-09 | 2010-04-28 | 株式会社Ｉｈｉ | Vacuum carburizing method and vacuum carburizing apparatus |
| EP2462253B1 (en) | 2009-08-07 | 2021-04-07 | Swagelok Company | Low temperature carburization under soft vacuum |
| JP5683416B2 (en) * | 2011-08-31 | 2015-03-11 | 株式会社Ihi | Method for improving insulation resistance of vacuum heating furnace |
| WO2013109415A1 (en) | 2012-01-20 | 2013-07-25 | Swagelok Company | Concurrent flow of activating gas in low temperature carburization |
| PL422596A1 (en) * | 2017-08-21 | 2019-02-25 | Seco/Warwick Spółka Akcyjna | Method for low pressure carburizing (LPC) of elements made from iron and other metals alloys |
| CN111534784B (en) * | 2020-05-21 | 2022-05-27 | 湖南特科能热处理有限公司 | Vacuum carburizing process for low-carbon alloy steel |
| AT524143B1 (en) * | 2020-09-10 | 2022-12-15 | Miba Sinter Austria Gmbh | Process for hardening a sintered component |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA692161A (en) * | 1964-08-11 | N. Ipsen Harold | Method of heat treating metal parts | |
| US1768317A (en) * | 1929-03-30 | 1930-06-24 | Peoples Gas By Products Corp | Process of carburizing iron or steel |
| US2565360A (en) * | 1947-12-15 | 1951-08-21 | Leon G Dufilho | Method for nitriding |
| GB801463A (en) * | 1954-08-11 | 1958-09-17 | Steirische Gussstahlwerke | Process for annealing steel in a vacuum |
| US3202553A (en) * | 1960-12-19 | 1965-08-24 | Greene Ben | Methods of heat treating articles |
| US3168607A (en) * | 1960-12-28 | 1965-02-02 | Greene Ben | Methods of heat treating articles |
| DE1533964B2 (en) * | 1967-03-23 | 1975-11-13 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Oven for surface treatment of workpieces in protective or carrier gas |
| US3620518A (en) * | 1967-03-23 | 1971-11-16 | Degussa | Process and device for the treatment of surfaces of workpieces in an annealing furnace |
| FR1555588A (en) * | 1967-08-01 | 1969-01-31 |
-
1971
- 1971-06-23 US US00155950A patent/US3796615A/en not_active Expired - Lifetime
-
1972
- 1972-02-09 CA CA134,334A patent/CA969841A/en not_active Expired
- 1972-02-23 IL IL38822A patent/IL38822A/en unknown
- 1972-03-01 GB GB944772A patent/GB1382075A/en not_active Expired
- 1972-04-07 JP JP47035074A patent/JPS5129703B1/ja active Pending
- 1972-04-07 DE DE2216688A patent/DE2216688C3/en not_active Expired
- 1972-04-17 FR FR7213426A patent/FR2154398B1/fr not_active Expired
- 1972-06-13 IT IT68895/72A patent/IT959314B/en active
- 1972-06-19 ES ES404017A patent/ES404017A1/en not_active Expired
- 1972-06-20 CS CS4329A patent/CS168596B2/cs unknown
- 1972-06-21 SE SE7208179A patent/SE383001B/en unknown
- 1972-06-21 SU SU721800702A patent/SU663316A3/en active
-
1975
- 1975-03-26 US US05/562,197 patent/USRE29881E/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| USRE29881E (en) | 1979-01-16 |
| DE2216688B2 (en) | 1978-04-27 |
| IL38822A0 (en) | 1972-04-27 |
| US3796615A (en) | 1974-03-12 |
| GB1382075A (en) | 1975-01-29 |
| IT959314B (en) | 1973-11-10 |
| DE2216688A1 (en) | 1973-01-11 |
| CA969841A (en) | 1975-06-24 |
| SE383001B (en) | 1976-02-23 |
| DE2216688C3 (en) | 1984-03-22 |
| JPS5129703B1 (en) | 1976-08-27 |
| CS168596B2 (en) | 1976-06-29 |
| IL38822A (en) | 1975-07-28 |
| SU663316A3 (en) | 1979-05-15 |
| FR2154398A1 (en) | 1973-05-11 |
| FR2154398B1 (en) | 1975-10-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19870219 |