EP0013654A1 - Procédé de traitement thermique de l'acier et de contrôle dudit traitement; acier ainsi obtenu - Google Patents
Procédé de traitement thermique de l'acier et de contrôle dudit traitement; acier ainsi obtenu Download PDFInfo
- Publication number
- EP0013654A1 EP0013654A1 EP80400048A EP80400048A EP0013654A1 EP 0013654 A1 EP0013654 A1 EP 0013654A1 EP 80400048 A EP80400048 A EP 80400048A EP 80400048 A EP80400048 A EP 80400048A EP 0013654 A1 EP0013654 A1 EP 0013654A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydrocarbon
- carbon monoxide
- steel
- atmosphere
- carbon
- 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.)
- Ceased
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
- C23C8/28—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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/76—Adjusting the composition of the atmosphere
-
- 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
Definitions
- the treatment being controlled by measuring the residual content of hydrocarbon, CO 2 and H 2 O in the atmosphere leaving the oven and by adjusting the flow rate of hydrocarbon introduced into the atmosphere entering the oven for l 'obtaining the desired fuel activity, that is to say by controlling the addition of hydrocarbon at the inlet of the furnace.
- charts were previously established which gave a relationship between on the one hand the residual hydrocarbon content, the residual H 2 0 content, the residual CO 2 content at the outlet of the oven and on the other hand the amount of carbon introduced into the steel. Reading these charts allows the adjustment of the carbon potential as indicated above.
- the carburetted depth on the side of the part is increased as well as that at the bottom of the groove.
- the homogeneity of treatment is better with a much more satisfactory relative difference.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7900872 | 1979-01-15 | ||
FR7900872A FR2446322A2 (fr) | 1979-01-15 | 1979-01-15 | Procede de traitement thermique de l'acier et de controle dudit traitement |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0013654A1 true EP0013654A1 (fr) | 1980-07-23 |
Family
ID=9220744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80400048A Ceased EP0013654A1 (fr) | 1979-01-15 | 1980-01-14 | Procédé de traitement thermique de l'acier et de contrôle dudit traitement; acier ainsi obtenu |
Country Status (13)
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0027649A1 (en) * | 1979-10-23 | 1981-04-29 | Air Products And Chemicals, Inc. | Protective atmosphere process for annealing and or spheroidizing ferrous metals |
EP0040094A1 (en) * | 1980-05-12 | 1981-11-18 | Air Products And Chemicals, Inc. | Carburizing process utilizing atmospheres generated from nitrogen-ethanol based mixtures |
FR2639252A1 (US06724976-20040420-M00002.png) * | 1988-11-24 | 1990-05-25 | Air Liquide | |
FR2777910A1 (fr) * | 1998-04-27 | 1999-10-29 | Air Liquide | Procede de regulation du potentiel carbone d'une atmosphere de traitement thermique et procede de traitement thermique mettant en oeuvre une telle regulation |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4436696A (en) | 1981-05-20 | 1984-03-13 | Air Products And Chemicals, Inc. | Process for providing a uniform carbon distribution in ferrous compacts at high temperatures |
US4415379A (en) * | 1981-09-15 | 1983-11-15 | The Boc Group, Inc. | Heat treatment processes |
FR2524006B1 (fr) * | 1982-03-23 | 1985-10-11 | Air Liquide | Procede de durcissement superficiel de pieces metalliques |
FR2527641A1 (fr) * | 1982-05-28 | 1983-12-02 | Air Liquide | Procede de traitement thermique de pieces metalliques par carburation |
US4597807A (en) * | 1984-11-13 | 1986-07-01 | Air Products And Chemicals, Inc. | Accelerated carburizing method with discrete atmospheres |
US5168200A (en) * | 1989-12-18 | 1992-12-01 | Payne Kenneth R | Automatic powered flowmeter valves and control thereof |
EP0763143A4 (en) * | 1994-04-25 | 1997-06-11 | Sturm Ruger & Co | METHOD FOR TREATING TITANIUM PARTS |
US6074493A (en) * | 1994-06-15 | 2000-06-13 | Kawasaki Steel Corporation | Method of continuously carburizing metal strip |
WO1997014820A1 (en) * | 1995-10-18 | 1997-04-24 | Sturm, Ruger & Company, Inc. | Method of treating titanium parts |
JP3960697B2 (ja) * | 1998-12-10 | 2007-08-15 | 株式会社日本テクノ | 浸炭および浸炭窒化処理方法 |
DE10003526A1 (de) * | 2000-01-27 | 2001-08-09 | Messer Griesheim Gmbh Frankfur | Verfahren zum Karbonitrieren von kohlenstoffreichen und hochlegierten Stählen |
FR2821362B1 (fr) * | 2001-02-23 | 2003-06-13 | Etudes Const Mecaniques | Procede de cementation basse pression |
DE10221605A1 (de) * | 2002-05-15 | 2003-12-04 | Linde Ag | Verfahren und Vorrichtung zur Wärmebehandlung metallischer Werkstücke |
EP3168314A1 (en) * | 2015-11-13 | 2017-05-17 | Air Liquide Deutschland GmbH | Method for heat treating metallic work pieces |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1116055A (fr) * | 1954-12-18 | 1956-05-03 | Renault | Procédé de préparation de gaz pour la cémentation de l'acier ou la protection des aciers contre l'oxydation ou la décarburation |
FR1150079A (fr) * | 1956-04-26 | 1958-01-07 | Renault | Procédé de préparation d'atmosphère pour traitement thermique des métaux |
FR67920E (fr) * | 1955-06-10 | 1958-03-26 | Renault | Procédé de préparation de gaz pour la cémentation de l'acier ou la protection des aciers contre l'oxydation ou la décarburation |
FR1578942A (US06724976-20040420-M00002.png) * | 1968-05-09 | 1969-08-22 | ||
FR2258456A1 (US06724976-20040420-M00002.png) * | 1974-01-18 | 1975-08-18 | Messer Griesheim Gmbh | |
FR2388896A2 (fr) * | 1977-04-27 | 1978-11-24 | Air Prod & Chem | Procede de traitement thermique de metaux ferreux |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3011873A (en) * | 1959-01-30 | 1961-12-05 | Leeds & Northrup Co | Measurement and control of constituent potentials |
NL121448C (US06724976-20040420-M00002.png) * | 1961-07-17 | 1900-01-01 | ||
US3693409A (en) * | 1970-10-12 | 1972-09-26 | Tokyo Gas Co Ltd | Method and apparatus for measuring the carbon potential in gas atmospheres |
JPS5120171B2 (US06724976-20040420-M00002.png) * | 1971-11-24 | 1976-06-23 | ||
US4035203A (en) * | 1973-12-21 | 1977-07-12 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method for the heat-treatment of steel and for the control of said treatment |
FR2285461A1 (fr) * | 1974-09-20 | 1976-04-16 | Air Liquide | Procede de traitement thermique de l'acier en atmosphere reductrice et non decarburante |
US3946817A (en) * | 1974-12-23 | 1976-03-30 | Hughes Tool Company | Differentially carburized rock bit cutter |
US4188242A (en) * | 1975-10-16 | 1980-02-12 | Hughes Tool Company | Combination carburizing and boronizing methods |
US4049472A (en) * | 1975-12-22 | 1977-09-20 | Air Products And Chemicals, Inc. | Atmosphere compositions and methods of using same for surface treating ferrous metals |
JPS5277836A (en) * | 1975-12-23 | 1977-06-30 | Fujikoshi Kk | Surface treatment of martensitic stainless steel |
US4145232A (en) * | 1977-06-03 | 1979-03-20 | Union Carbide Corporation | Process for carburizing steel |
US4175986A (en) * | 1978-10-19 | 1979-11-27 | Trw Inc. | Inert carrier gas heat treating control process |
US4208224A (en) * | 1978-11-22 | 1980-06-17 | Airco, Inc. | Heat treatment processes utilizing H2 O additions |
-
1979
- 1979-01-15 FR FR7900872A patent/FR2446322A2/fr active Granted
- 1979-12-28 ZA ZA00797062A patent/ZA797062B/xx unknown
- 1979-12-28 US US06/107,785 patent/US4322255A/en not_active Expired - Lifetime
-
1980
- 1980-01-08 AU AU54449/80A patent/AU524217B2/en not_active Ceased
- 1980-01-11 IT IT19164/80A patent/IT1130857B/it active
- 1980-01-11 BE BE0/198941A patent/BE881119R/fr not_active IP Right Cessation
- 1980-01-11 ES ES1980487618A patent/ES487618A0/es active Granted
- 1980-01-14 CA CA000343578A patent/CA1146844A/fr not_active Expired
- 1980-01-14 JP JP221780A patent/JPS5597465A/ja active Pending
- 1980-01-14 LU LU82080A patent/LU82080A1/fr unknown
- 1980-01-14 EP EP80400048A patent/EP0013654A1/fr not_active Ceased
- 1980-01-14 BR BR8000212A patent/BR8000212A/pt unknown
- 1980-01-15 AR AR279636A patent/AR221133A1/es active
-
1987
- 1987-12-21 JP JP62321613A patent/JPS63241158A/ja active Granted
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1116055A (fr) * | 1954-12-18 | 1956-05-03 | Renault | Procédé de préparation de gaz pour la cémentation de l'acier ou la protection des aciers contre l'oxydation ou la décarburation |
FR67920E (fr) * | 1955-06-10 | 1958-03-26 | Renault | Procédé de préparation de gaz pour la cémentation de l'acier ou la protection des aciers contre l'oxydation ou la décarburation |
FR1150079A (fr) * | 1956-04-26 | 1958-01-07 | Renault | Procédé de préparation d'atmosphère pour traitement thermique des métaux |
FR1578942A (US06724976-20040420-M00002.png) * | 1968-05-09 | 1969-08-22 | ||
FR2258456A1 (US06724976-20040420-M00002.png) * | 1974-01-18 | 1975-08-18 | Messer Griesheim Gmbh | |
FR2388896A2 (fr) * | 1977-04-27 | 1978-11-24 | Air Prod & Chem | Procede de traitement thermique de metaux ferreux |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0027649A1 (en) * | 1979-10-23 | 1981-04-29 | Air Products And Chemicals, Inc. | Protective atmosphere process for annealing and or spheroidizing ferrous metals |
EP0040094A1 (en) * | 1980-05-12 | 1981-11-18 | Air Products And Chemicals, Inc. | Carburizing process utilizing atmospheres generated from nitrogen-ethanol based mixtures |
FR2639252A1 (US06724976-20040420-M00002.png) * | 1988-11-24 | 1990-05-25 | Air Liquide | |
EP0370872A1 (fr) * | 1988-11-24 | 1990-05-30 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Procédé d'élaboration d'une atmosphère de traitement thermique par séparation d'air par adsorption |
FR2777910A1 (fr) * | 1998-04-27 | 1999-10-29 | Air Liquide | Procede de regulation du potentiel carbone d'une atmosphere de traitement thermique et procede de traitement thermique mettant en oeuvre une telle regulation |
WO1999055921A1 (fr) * | 1998-04-27 | 1999-11-04 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Procede de cementation ou carbonitruration de pieces metalliques |
Also Published As
Publication number | Publication date |
---|---|
AR221133A1 (es) | 1980-12-30 |
CA1146844A (fr) | 1983-05-24 |
BR8000212A (pt) | 1980-09-30 |
LU82080A1 (fr) | 1980-04-23 |
FR2446322B2 (US06724976-20040420-M00002.png) | 1981-05-29 |
IT1130857B (it) | 1986-06-18 |
JPH0356304B2 (US06724976-20040420-M00002.png) | 1991-08-27 |
BE881119R (fr) | 1980-07-11 |
JPS63241158A (ja) | 1988-10-06 |
IT8019164A0 (it) | 1980-01-11 |
AU5444980A (en) | 1980-07-24 |
FR2446322A2 (fr) | 1980-08-08 |
ES8105036A2 (es) | 1981-04-01 |
ZA797062B (en) | 1980-11-26 |
AU524217B2 (en) | 1982-09-02 |
ES487618A0 (es) | 1981-04-01 |
JPS5597465A (en) | 1980-07-24 |
US4322255A (en) | 1982-03-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): CH DE FR IT SE |
|
17P | Request for examination filed | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 19830613 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: KOSTELITZ, MICHEL |