FR2181597A1 - Continuous heat treatment furnaces - with recycled furnace gases - Google Patents

Continuous heat treatment furnaces - with recycled furnace gases

Info

Publication number
FR2181597A1
FR2181597A1 FR7215591A FR7215591A FR2181597A1 FR 2181597 A1 FR2181597 A1 FR 2181597A1 FR 7215591 A FR7215591 A FR 7215591A FR 7215591 A FR7215591 A FR 7215591A FR 2181597 A1 FR2181597 A1 FR 2181597A1
Authority
FR
France
Prior art keywords
heat treatment
continuous heat
esp
furnace gases
treatment furnaces
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
FR7215591A
Other languages
French (fr)
Other versions
FR2181597B1 (en
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.)
Stein Surface
Original Assignee
Stein Surface
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 Stein Surface filed Critical Stein Surface
Priority to FR7215591A priority Critical patent/FR2181597A1/en
Publication of FR2181597A1 publication Critical patent/FR2181597A1/en
Application granted granted Critical
Publication of FR2181597B1 publication Critical patent/FR2181597B1/fr
Granted 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
    • C21D1/763—Adjusting the composition of the atmosphere using a catalyst
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

The furnaces esp. for case-hardening, carbonitriding, tempering, annealing, etc., a controlled endothermic atmosphere contg. CO, H2 and an additional gas, esp. a gaseous hydrocarbon, pref. CH4, in which air is added to gas leaving the furnace, and the mixt. is returned to the furnace after having been passed over a suitable oxidation catalyst, esp. NiO2 at a suitable temp., pref. inside the same furnace.
FR7215591A 1972-04-27 1972-04-27 Continuous heat treatment furnaces - with recycled furnace gases Granted FR2181597A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7215591A FR2181597A1 (en) 1972-04-27 1972-04-27 Continuous heat treatment furnaces - with recycled furnace gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7215591A FR2181597A1 (en) 1972-04-27 1972-04-27 Continuous heat treatment furnaces - with recycled furnace gases

Publications (2)

Publication Number Publication Date
FR2181597A1 true FR2181597A1 (en) 1973-12-07
FR2181597B1 FR2181597B1 (en) 1976-03-12

Family

ID=9097865

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7215591A Granted FR2181597A1 (en) 1972-04-27 1972-04-27 Continuous heat treatment furnaces - with recycled furnace gases

Country Status (1)

Country Link
FR (1) FR2181597A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0430314A2 (en) * 1984-11-08 1991-06-05 Linde Aktiengesellschaft Method and device for producing a protective atmosphere
EP2135961A2 (en) 2008-06-20 2009-12-23 Ipsen International GmbH Method and device for heat treating metallic materials in a protective atmosphere

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR782422A (en) * 1935-06-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR782422A (en) * 1935-06-21

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0430314A2 (en) * 1984-11-08 1991-06-05 Linde Aktiengesellschaft Method and device for producing a protective atmosphere
EP0430313A2 (en) * 1984-11-08 1991-06-05 Linde Aktiengesellschaft Method and device for producing a protective atmosphere
EP0430313A3 (en) * 1984-11-08 1991-09-18 Linde Aktiengesellschaft Method and device for producing a protective atmosphere
EP0430314A3 (en) * 1984-11-08 1991-09-18 Linde Aktiengesellschaft Method and device for producing a protective atmosphere
EP2135961A2 (en) 2008-06-20 2009-12-23 Ipsen International GmbH Method and device for heat treating metallic materials in a protective atmosphere
EP2135961A3 (en) * 2008-06-20 2013-02-13 Ipsen International GmbH Method and device for heat treating metallic materials in a protective atmosphere

Also Published As

Publication number Publication date
FR2181597B1 (en) 1976-03-12

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Legal Events

Date Code Title Description
ST Notification of lapse