FR2087263A5 - Carburizing and decarburizing steel articles - Google Patents

Carburizing and decarburizing steel articles

Info

Publication number
FR2087263A5
FR2087263A5 FR7017348A FR7017348A FR2087263A5 FR 2087263 A5 FR2087263 A5 FR 2087263A5 FR 7017348 A FR7017348 A FR 7017348A FR 7017348 A FR7017348 A FR 7017348A FR 2087263 A5 FR2087263 A5 FR 2087263A5
Authority
FR
France
Prior art keywords
furnace
carbon
gas
articles
treated
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
Application number
FR7017348A
Other languages
French (fr)
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.)
Ludwig-Ofag-Indugas Ind GmbH
Original Assignee
Ludwig-Ofag-Indugas Ind 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 Ludwig-Ofag-Indugas Ind GmbH filed Critical Ludwig-Ofag-Indugas Ind GmbH
Priority to FR7017348A priority Critical patent/FR2087263A5/en
Priority to BE750311D priority patent/BE750311A/en
Application granted granted Critical
Publication of FR2087263A5 publication Critical patent/FR2087263A5/en
Expired 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)

Abstract

Steel articles are heat-treated in a furnace for a predetermined time, at most up to exchange equilibrium dependent on the temp., in an atmosphere containing carbon compounds. Within the furnace is a diffusion-permeable partition of the same material as the articles being treated which is passed a cetain quantity of gas containing no carbon. The carbon content of this gas beyond the furnace is directly or indirectly measured and the admission of carbon compounds to the furnace atmosphere is regulated accordingly. Specifically the additives may be hydrocarbons and the sensor gas N2, H2 and H2O, the amount of CO2 resulting from total combustion being the control parameter.
FR7017348A 1970-05-08 1970-05-13 Carburizing and decarburizing steel articles Expired FR2087263A5 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7017348A FR2087263A5 (en) 1970-05-13 1970-05-13 Carburizing and decarburizing steel articles
BE750311D BE750311A (en) 1970-05-08 1970-05-13 Carburizing and decarburizing steel articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7017348A FR2087263A5 (en) 1970-05-13 1970-05-13 Carburizing and decarburizing steel articles

Publications (1)

Publication Number Publication Date
FR2087263A5 true FR2087263A5 (en) 1971-12-31

Family

ID=9055431

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7017348A Expired FR2087263A5 (en) 1970-05-08 1970-05-13 Carburizing and decarburizing steel articles

Country Status (1)

Country Link
FR (1) FR2087263A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2361476A1 (en) * 1976-08-12 1978-03-10 Ipsen Ind Int Gmbh METHOD AND DEVICE FOR ADJUSTING THE CEMENTATION OF PARTS IN A VACUUM OVEN

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2361476A1 (en) * 1976-08-12 1978-03-10 Ipsen Ind Int Gmbh METHOD AND DEVICE FOR ADJUSTING THE CEMENTATION OF PARTS IN A VACUUM OVEN

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Legal Events

Date Code Title Description
ST Notification of lapse