EP0156378A3 - Method and apparatus for carburizing steel with a gas - Google Patents

Method and apparatus for carburizing steel with a gas Download PDF

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Publication number
EP0156378A3
EP0156378A3 EP85103680A EP85103680A EP0156378A3 EP 0156378 A3 EP0156378 A3 EP 0156378A3 EP 85103680 A EP85103680 A EP 85103680A EP 85103680 A EP85103680 A EP 85103680A EP 0156378 A3 EP0156378 A3 EP 0156378A3
Authority
EP
European Patent Office
Prior art keywords
gas
diffusion process
carbon
steel
function
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
EP85103680A
Other languages
German (de)
Other versions
EP0156378A2 (en
EP0156378B1 (en
Inventor
Joachim Dr.-Ing. Wunning
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.)
WUENNING, JOACHIM, DR.-ING.
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT85103680T priority Critical patent/ATE45190T1/en
Publication of EP0156378A2 publication Critical patent/EP0156378A2/en
Publication of EP0156378A3 publication Critical patent/EP0156378A3/en
Application granted granted Critical
Publication of EP0156378B1 publication Critical patent/EP0156378B1/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Abstract

In the gas carburization of steel, a steel part is exposed in a carbon-enriched atmosphere of a furnace to a diffusion process to form a boundary layer with an increased carbon content, determined as a function of the distance from the surface. The values of importance for the diffusion process are determined intermittently and used as control parameters to affect the diffusion process. The flow of carbon diffusing directly through the surface of the steel part serves as the measured value. The supply of the carburizing gas is controlled as a function of this value.
EP85103680A 1984-03-29 1985-03-27 Method and apparatus for carburizing steel with a gas Expired EP0156378B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85103680T ATE45190T1 (en) 1984-03-29 1985-03-27 METHOD AND EQUIPMENT FOR GAS CARBURIZING STEEL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3411605 1984-03-29
DE3411605A DE3411605C2 (en) 1984-03-29 1984-03-29 Process and device for gas carburizing of steel

Publications (3)

Publication Number Publication Date
EP0156378A2 EP0156378A2 (en) 1985-10-02
EP0156378A3 true EP0156378A3 (en) 1986-03-26
EP0156378B1 EP0156378B1 (en) 1989-08-02

Family

ID=6231980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85103680A Expired EP0156378B1 (en) 1984-03-29 1985-03-27 Method and apparatus for carburizing steel with a gas

Country Status (5)

Country Link
US (1) US4591132A (en)
EP (1) EP0156378B1 (en)
JP (1) JPS60228665A (en)
AT (1) ATE45190T1 (en)
DE (1) DE3411605C2 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2535820B2 (en) * 1986-02-15 1996-09-18 大同特殊鋼株式会社 Carburizing method for metallic materials
DE3714283C1 (en) * 1987-04-29 1988-11-24 Ipsen Ind Internat Gmbh Process for gas carburizing steel
DE3826351A1 (en) * 1988-08-03 1990-02-08 Degussa METHOD FOR DETERMINING THE COALING POTENTIAL IN GAS CARBON OVENS AND DEVICE THEREFOR
DE3904776A1 (en) * 1989-02-17 1990-08-23 Ver Schmiedewerke Gmbh METHOD FOR PRODUCING A HIGH STRENGTH AND TREATMENT OF METALLIC LAYERED COMPOSITE MATERIAL
US5064620A (en) * 1989-06-01 1991-11-12 Pierre Beuret Probe for measuring carbon flux
US5324415A (en) * 1989-06-09 1994-06-28 Blumenthal Robert N Apparatus and systems for analyzing a sample of treatment atmosphere having a carbon potential
US4966348A (en) * 1989-06-30 1990-10-30 Lindberg Corp. Method and apparatus for monitoring atmosphere in furnaces
US5139584A (en) * 1989-07-13 1992-08-18 Solo Fours Industriels Sa Carburization process
JP3531736B2 (en) * 2001-01-19 2004-05-31 オリエンタルエンヂニアリング株式会社 Carburizing method and carburizing device
JP5428031B2 (en) * 2001-06-05 2014-02-26 Ｄｏｗａサーモテック株式会社 Carburizing method and apparatus
JP5428032B2 (en) * 2001-06-05 2014-02-26 Ｄｏｗａサーモテック株式会社 Carburizing method
DE10152204B4 (en) * 2001-10-23 2004-01-22 Schwäbische Härtetechnik Ulm GmbH Device and method for measuring and / or regulating the carburizing atmosphere in a vacuum carburizing plant
DE10235131A1 (en) * 2002-08-01 2004-02-19 Ipsen International Gmbh Method and device for blackening components
US20080149227A1 (en) * 2006-12-26 2008-06-26 Karen Anne Connery Method for oxygen free carburization in atmospheric pressure furnaces
US20080149225A1 (en) * 2006-12-26 2008-06-26 Karen Anne Connery Method for oxygen free carburization in atmospheric pressure furnaces
US20080149226A1 (en) * 2006-12-26 2008-06-26 Karen Anne Connery Method of optimizing an oxygen free heat treating process
US9109277B2 (en) 2011-01-10 2015-08-18 Air Products And Chemicals, Inc. Method and apparatus for heat treating a metal
TW201418476A (en) * 2012-11-01 2014-05-16 Metal Ind Res & Dev Ct Furnace gas generation apparatus used in small heat treatment furnace
CN111172492B (en) * 2020-01-03 2021-01-19 燕山大学 Device and method for gear surface carburization

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1222762B (en) * 1957-07-19 1966-08-11 Bbc Brown Boveri & Cie Process for regulating the gas carburization of steel and iron or their alloys
DE2152440A1 (en) * 1971-10-21 1972-10-26 Bbc Brown Boveri & Cie Soot free steel carburizing system - with automatic control of carbon potential of gas and soot threshold
US4108693A (en) * 1974-12-19 1978-08-22 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
EP0049530A1 (en) * 1980-10-08 1982-04-14 Linde Aktiengesellschaft Method and device for carbonizing metallic pieces
DE3139622A1 (en) * 1981-10-06 1983-04-21 Joachim Dr.-Ing. 7250 Leonberg Wünning Process for the gas-carburisation of steel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2980415A (en) * 1954-02-16 1961-04-18 Honeywell Regulator Co Apparatus for controlling case hardening action
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
US4049473A (en) * 1976-03-11 1977-09-20 Airco, Inc. Methods for carburizing steel parts
SU985144A1 (en) * 1981-03-04 1982-12-30 Предприятие П/Я Р-6205 Method of measuring carbon potential of carburisation atmosphere

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1222762B (en) * 1957-07-19 1966-08-11 Bbc Brown Boveri & Cie Process for regulating the gas carburization of steel and iron or their alloys
DE2152440A1 (en) * 1971-10-21 1972-10-26 Bbc Brown Boveri & Cie Soot free steel carburizing system - with automatic control of carbon potential of gas and soot threshold
US4108693A (en) * 1974-12-19 1978-08-22 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
EP0049530A1 (en) * 1980-10-08 1982-04-14 Linde Aktiengesellschaft Method and device for carbonizing metallic pieces
DE3139622A1 (en) * 1981-10-06 1983-04-21 Joachim Dr.-Ing. 7250 Leonberg Wünning Process for the gas-carburisation of steel

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, Band 89, Nr. 8, 1978, Seite 212, Nr. 63151h, Columbus, Ohio, US; E.L. GYULIKHANDANOV et al.: "Determination of the chemical reaction rate constant during the treatment of steel in an endothermic atmosphere", & IZV. AKAD. NAUK SSSR, MET. 1978, (3), 189-91 *
MICROTECNIC, Band XX, 1966, Seiten 60-64, Agifa Verlag, Association for the Study of Heat Treatment, Zürich, CH; "Heat treatment of structural steels and of tool steels" *
MICROTECNIC, Band XX, no. 3, 1966, Seiten 402,403, Agifa Verlag, Zürich, CH; R. CHATTERJEE-FISCHER: "Possibilties of measuring and regulating the C-potential during gas-carburizing and its practical significance" *

Also Published As

Publication number Publication date
JPS60228665A (en) 1985-11-13
EP0156378A2 (en) 1985-10-02
EP0156378B1 (en) 1989-08-02
DE3411605A1 (en) 1985-10-10
US4591132A (en) 1986-05-27
ATE45190T1 (en) 1989-08-15
DE3411605C2 (en) 1986-07-17

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