FR2681332B1 - METHOD AND DEVICE FOR CEMENTING STEEL IN A LOW PRESSURE ATMOSPHERE. - Google Patents

METHOD AND DEVICE FOR CEMENTING STEEL IN A LOW PRESSURE ATMOSPHERE.

Info

Publication number
FR2681332B1
FR2681332B1 FR919111304A FR9111304A FR2681332B1 FR 2681332 B1 FR2681332 B1 FR 2681332B1 FR 919111304 A FR919111304 A FR 919111304A FR 9111304 A FR9111304 A FR 9111304A FR 2681332 B1 FR2681332 B1 FR 2681332B1
Authority
FR
France
Prior art keywords
enrichment
stages
low pressure
pressure 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.)
Expired - Lifetime
Application number
FR919111304A
Other languages
French (fr)
Other versions
FR2681332A1 (en
Inventor
Dervieux Georges
Bares Jean
Jacquot Patrick
Dubois Sophie
German Josephine
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.)
Innovatique SA
Original Assignee
Innovatique SA
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 Innovatique SA filed Critical Innovatique SA
Priority to FR919111304A priority Critical patent/FR2681332B1/en
Priority to EP92402395A priority patent/EP0532386B1/en
Priority to DE69209947T priority patent/DE69209947D1/en
Priority to AT92402395T priority patent/ATE136946T1/en
Priority to JP4245041A priority patent/JPH05195192A/en
Priority to TW081107828A priority patent/TW225558B/zh
Publication of FR2681332A1 publication Critical patent/FR2681332A1/en
Application granted granted Critical
Publication of FR2681332B1 publication Critical patent/FR2681332B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C23C8/08—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)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

The carburising process according to the invention consists in heating the articles to be treated to a temperature of between 800 DEG C and 1100 DEG C, preferably above 900 DEG C, in an oxygen-free gaseous atmosphere maintained by pumping at a pressure of between 1 and 5 mbar and in performing a plurality of successive carbon-enrichment stages (C1, C2), each obtained by an injection for a limited period of a treatment gas containing one or a number of pure hydrocarbons, each enrichment stage (C1, C2) having a duration shorter than the time for the change of austenite into a saturation stage, these enrichment stages being separated by vacuum diffusion stages (D1, D2) of longer duration making it possible to adjust the surface carbon content. The invention makes it possible to simplify the mechanism of carbon transfer and to avoid the detrimental effects of overcarburising.
FR919111304A 1991-09-13 1991-09-13 METHOD AND DEVICE FOR CEMENTING STEEL IN A LOW PRESSURE ATMOSPHERE. Expired - Lifetime FR2681332B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR919111304A FR2681332B1 (en) 1991-09-13 1991-09-13 METHOD AND DEVICE FOR CEMENTING STEEL IN A LOW PRESSURE ATMOSPHERE.
EP92402395A EP0532386B1 (en) 1991-09-13 1992-09-03 Process and apparatus for carburizing steel in an atmosphere of low pressure
DE69209947T DE69209947D1 (en) 1991-09-13 1992-09-03 Method and apparatus for carburizing steel in a low pressure atmosphere
AT92402395T ATE136946T1 (en) 1991-09-13 1992-09-03 METHOD AND APPARATUS FOR CARBURING STEEL IN A LOW PRESSURE ATMOSPHERE
JP4245041A JPH05195192A (en) 1991-09-13 1992-09-14 Method and apparatus for carburizing steel material (cementation) in low-pressure atmosphere
TW081107828A TW225558B (en) 1991-09-13 1992-10-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR919111304A FR2681332B1 (en) 1991-09-13 1991-09-13 METHOD AND DEVICE FOR CEMENTING STEEL IN A LOW PRESSURE ATMOSPHERE.

Publications (2)

Publication Number Publication Date
FR2681332A1 FR2681332A1 (en) 1993-03-19
FR2681332B1 true FR2681332B1 (en) 1994-06-10

Family

ID=9416913

Family Applications (1)

Application Number Title Priority Date Filing Date
FR919111304A Expired - Lifetime FR2681332B1 (en) 1991-09-13 1991-09-13 METHOD AND DEVICE FOR CEMENTING STEEL IN A LOW PRESSURE ATMOSPHERE.

Country Status (6)

Country Link
EP (1) EP0532386B1 (en)
JP (1) JPH05195192A (en)
AT (1) ATE136946T1 (en)
DE (1) DE69209947D1 (en)
FR (1) FR2681332B1 (en)
TW (1) TW225558B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3460075B2 (en) * 1995-12-28 2003-10-27 同和鉱業株式会社 Metal carburizing method
AT404029B (en) * 1996-09-16 1998-07-27 Ald Aichelin Ges M B H LOW-PRESSURE REARING PLANT
US6165597A (en) * 1998-08-12 2000-12-26 Swagelok Company Selective case hardening processes at low temperature
US6093303A (en) * 1998-08-12 2000-07-25 Swagelok Company Low temperature case hardening processes
JP2000336469A (en) * 1999-05-28 2000-12-05 Nachi Fujikoshi Corp Vacuum carburizing method and device
US6547888B1 (en) 2000-01-28 2003-04-15 Swagelok Company Modified low temperature case hardening processes
FR2813892B1 (en) * 2000-09-13 2003-09-26 Peugeot Citroen Automobiles Sa PROCESS FOR THE HEAT TREATMENT OF HYPOEUTECTOID TOOL STEELS
FR2821362B1 (en) 2001-02-23 2003-06-13 Etudes Const Mecaniques LOW PRESSURE CEMENTING PROCESS
FR2832735B1 (en) * 2001-11-24 2006-06-23 Bosch Gmbh Robert DEVICE AND METHOD FOR DEPRESSION CEMENTATION
DE10209382B4 (en) * 2002-03-02 2011-04-07 Robert Bosch Gmbh Method of carburizing components
DE10254846B4 (en) * 2002-11-25 2011-06-16 Robert Bosch Gmbh Method for case-hardening components made of hot-work steels by means of vacuum carburizing
JP4255815B2 (en) * 2003-11-28 2009-04-15 光洋サーモシステム株式会社 Gas carburizing method
JP4587719B2 (en) * 2004-07-07 2010-11-24 中外炉工業株式会社 Carburizing gas production equipment
JP5577573B2 (en) * 2008-08-29 2014-08-27 株式会社Ｉｈｉ Vacuum carburizing method and vacuum carburizing apparatus
DE102009008664A1 (en) * 2009-02-12 2010-08-19 Linde Aktiengesellschaft Apparatus and method for carburizing steel
DK2462253T3 (en) 2009-08-07 2021-05-31 Swagelok Co COOLING AT LOW TEMPERATURE UNDER LOW VACUUM
US9617632B2 (en) 2012-01-20 2017-04-11 Swagelok Company Concurrent flow of activating gas in low temperature carburization
WO2017074161A1 (en) * 2015-10-30 2017-05-04 한국생산기술연구원 Low temperature carburizing method and carburizing apparatus
KR101866754B1 (en) * 2016-10-31 2018-06-18 한국생산기술연구원 Carburizing Method in Low-Pressure Range

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2154398A (en) * 1936-12-09 1939-04-11 Rca Corp Frequency modulation receiver
FR926776A (en) * 1945-02-05 1947-10-10 Wildbarfield Electric Furnaces Heat treatment process and furnace for the implementation of this process
US3796615A (en) * 1971-06-23 1974-03-12 Hayes Inc C I Method of vacuum carburizing
GB1510481A (en) * 1976-04-02 1978-05-10 British Steel Corp Carburising coiled strip
JPS5354136A (en) * 1976-10-28 1978-05-17 Ishikawajima Harima Heavy Ind Vacuum carburizing furnace
US4160680A (en) * 1976-11-05 1979-07-10 Sola Basic Industries, Inc. Vacuum carburizing
GB1559690A (en) * 1976-11-10 1980-01-23 British Steel Corp Treatment of steel products
JPS5431976A (en) * 1977-08-13 1979-03-09 Norichika Tanaka Multiistage vertical incinerator
DE3038078A1 (en) * 1980-10-08 1982-05-06 Linde Ag, 6200 Wiesbaden METHOD AND DEVICE FOR CARBONING METAL WORKPIECES
DE3146042A1 (en) * 1981-11-20 1983-05-26 Linde Ag, 6200 Wiesbaden METHOD FOR USEFUL METAL WORKPIECES
JPH01212748A (en) * 1988-02-18 1989-08-25 Daido Steel Co Ltd Rapid carburizing treatment for steel
JPH0222451A (en) * 1988-07-09 1990-01-25 Michio Sugiyama Vacuum carburizing method

Also Published As

Publication number Publication date
DE69209947D1 (en) 1996-05-23
ATE136946T1 (en) 1996-05-15
JPH05195192A (en) 1993-08-03
TW225558B (en) 1994-06-21
FR2681332A1 (en) 1993-03-19
EP0532386B1 (en) 1996-04-17
EP0532386A1 (en) 1993-03-17

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