EP0288680A3 - Process for carburizing steel - Google Patents

Process for carburizing steel Download PDF

Info

Publication number
EP0288680A3
EP0288680A3 EP88102679A EP88102679A EP0288680A3 EP 0288680 A3 EP0288680 A3 EP 0288680A3 EP 88102679 A EP88102679 A EP 88102679A EP 88102679 A EP88102679 A EP 88102679A EP 0288680 A3 EP0288680 A3 EP 0288680A3
Authority
EP
European Patent Office
Prior art keywords
carburization
carbon
article
phase
carbon content
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
EP88102679A
Other languages
German (de)
Other versions
EP0288680B1 (en
EP0288680A2 (en
Inventor
Bernd Dr. Mont. Edenhofer
Hans Dipl.-Ing. Pfau
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.)
Ipsen International GmbH
Original Assignee
Ipsen International GmbH
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 Ipsen International GmbH filed Critical Ipsen International GmbH
Priority to AT88102679T priority Critical patent/ATE81159T1/en
Publication of EP0288680A2 publication Critical patent/EP0288680A2/en
Publication of EP0288680A3 publication Critical patent/EP0288680A3/en
Application granted granted Critical
Publication of EP0288680B1 publication Critical patent/EP0288680B1/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)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

A method for gaseous carburization of steel, where, in a carbon-rich gaseous atmosphere, an article that is to be carburized is, in a first carburization phase, exposed to a carbon charge that is as great as possible, at the black limit, and, in a subsequent diffusion phase, a lower carbon charge that corresponds to the desired carbon content at the surface of the article is established, with carburization being regulated via the two target values carbon content at the surface and depth of carburization. In order, independent of the carbide limit, to provide a regulation with which it is possible to achieve in a straightforward manner, reliably and reproducibly, the desired carbon content curve (carbon profile) in the article, at least one further target value that is characteristic of the carbon content curve is used to regulate the carburization. When this additional target value is reached, the carbon level that characterizes the carburization phase is reduced, and the diffusion phase is initiated.
EP88102679A 1987-04-29 1988-02-24 Process for carburizing steel Expired - Lifetime EP0288680B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88102679T ATE81159T1 (en) 1987-04-29 1988-02-24 PROCESS FOR GAS CARBURIZING STEEL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3714283 1987-04-29
DE3714283A DE3714283C1 (en) 1987-04-29 1987-04-29 Process for gas carburizing steel

Publications (3)

Publication Number Publication Date
EP0288680A2 EP0288680A2 (en) 1988-11-02
EP0288680A3 true EP0288680A3 (en) 1990-01-31
EP0288680B1 EP0288680B1 (en) 1992-09-30

Family

ID=6326517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88102679A Expired - Lifetime EP0288680B1 (en) 1987-04-29 1988-02-24 Process for carburizing steel

Country Status (5)

Country Link
US (1) US4881982A (en)
EP (1) EP0288680B1 (en)
AT (1) ATE81159T1 (en)
DE (2) DE3714283C1 (en)
ES (1) ES2035120T3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3707003A1 (en) * 1987-03-05 1988-09-15 Ewald Schwing METHOD FOR CARBONING A STEEL WORKPIECE
US5139584A (en) * 1989-07-13 1992-08-18 Solo Fours Industriels Sa Carburization process
FR2656003B1 (en) * 1989-12-14 1994-02-11 Michel Gantois PROCESS AND PLANT FOR THERMAL OR THERMOCHEMICAL TREATMENT OF STEEL, ENABLING THE CONTROL OF CARBON ENRICHMENT IN THE SURFACE ZONE.
DE4238993C1 (en) * 1992-01-20 1993-07-01 Leybold Durferrit Gmbh, 5000 Koeln, De
JP3460075B2 (en) † 1995-12-28 2003-10-27 同和鉱業株式会社 Metal carburizing method
US20050016831A1 (en) * 2003-07-24 2005-01-27 Paganessi Joseph E. Generation of acetylene for on-site use in carburization and other processes

Citations (6)

* 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
USRE26935E (en) * 1968-06-26 1970-08-18 Carburizino method and apparatus
DE3139622A1 (en) * 1981-10-06 1983-04-21 Joachim Dr.-Ing. 7250 Leonberg Wünning Process for the gas-carburisation of steel
EP0156378A2 (en) * 1984-03-29 1985-10-02 Joachim Dr.-Ing. Wünning Method and apparatus for carburizing steel with a gas
DE3507527A1 (en) * 1984-11-20 1986-05-22 Ewald 4133 Neukirchen-Vluyn Schwing Process and equipment for carburising a steel workpiece
EP0213011A1 (en) * 1985-08-14 1987-03-04 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for speedily and homogeneously carburizing a charge in a furnace

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3925109A (en) * 1974-01-29 1975-12-09 Us Energy Precise carbon control of fabricated stainless steel
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
DE2636273C3 (en) * 1976-08-12 1980-02-07 Ipsen Industries International Gmbh, 4190 Kleve Method for controlling carburization of parts in a vacuum furnace
CH628092A5 (en) * 1978-03-21 1982-02-15 Ipsen Ind Int Gmbh METHOD AND DEVICE FOR REGULATING THE CARBON LEVEL OF A CHEMICALLY REACTIVE GAS MIXTURE.
US4306918A (en) * 1980-04-22 1981-12-22 Air Products And Chemicals, Inc. Process for carburizing ferrous metals
US4306919A (en) * 1980-09-04 1981-12-22 Union Carbide Corporation Process for carburizing steel
DE3038078A1 (en) * 1980-10-08 1982-05-06 Linde Ag, 6200 Wiesbaden METHOD AND DEVICE FOR CARBONING METAL WORKPIECES
JPS58126975A (en) * 1982-01-22 1983-07-28 Komatsu Ltd Carburizing method by vacuum carburizing furnace
DE3436267A1 (en) * 1984-10-03 1986-05-15 Process-Electronic Analyse- und Regelgeräte GmbH, 7336 Uhingen Process for controlling the carbon level in a gas carburisation furnace

Patent Citations (6)

* 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
USRE26935E (en) * 1968-06-26 1970-08-18 Carburizino method and apparatus
DE3139622A1 (en) * 1981-10-06 1983-04-21 Joachim Dr.-Ing. 7250 Leonberg Wünning Process for the gas-carburisation of steel
EP0156378A2 (en) * 1984-03-29 1985-10-02 Joachim Dr.-Ing. Wünning Method and apparatus for carburizing steel with a gas
DE3507527A1 (en) * 1984-11-20 1986-05-22 Ewald 4133 Neukirchen-Vluyn Schwing Process and equipment for carburising a steel workpiece
EP0213011A1 (en) * 1985-08-14 1987-03-04 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for speedily and homogeneously carburizing a charge in a furnace

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 235 (C-191)[1380], 19 Oktober 1983; & JP-A-58 126 975 (KOMATSU SEISAKUSHO K.K.) 28-07-1983 *

Also Published As

Publication number Publication date
EP0288680B1 (en) 1992-09-30
ATE81159T1 (en) 1992-10-15
EP0288680A2 (en) 1988-11-02
ES2035120T3 (en) 1993-04-16
DE3714283C1 (en) 1988-11-24
US4881982A (en) 1989-11-21
DE3874944D1 (en) 1992-11-05

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