ES2075177T3 - Procedimiento de tratamiento termico de metales. - Google Patents

Procedimiento de tratamiento termico de metales.

Info

Publication number
ES2075177T3
ES2075177T3 ES90401645T ES90401645T ES2075177T3 ES 2075177 T3 ES2075177 T3 ES 2075177T3 ES 90401645 T ES90401645 T ES 90401645T ES 90401645 T ES90401645 T ES 90401645T ES 2075177 T3 ES2075177 T3 ES 2075177T3
Authority
ES
Spain
Prior art keywords
nitrogen
atmosphere
high temperature
metal parts
procedure
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
ES90401645T
Other languages
English (en)
Inventor
Yannick Rancon
Eric Duchateau
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.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9383322&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2075177(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Application granted granted Critical
Publication of ES2075177T3 publication Critical patent/ES2075177T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
    • C21D3/02—Extraction of non-metals
    • C21D3/04—Decarburising
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Furnace Details (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

PROCEDIMIENTO PARA TRATAMIENTO TERMICO DE METALES POR PASO CONTINUO DE PIEZAS METALICAS EN UNA ZONA ALARGADA BAJO ATMOSFERA CONTROLADA, QUE TIENE UNA PARTE SUPERIOR A TEMPERATURA ELEVADA DONDE DICHA ATMOSFERA CONTROLADA CONTIENE NITROGENO Y ESPECIES QUIMICAS REDUCTORAS, ESPECIALMENTE HIDROGENO, EVENTUALMENTE MONOXIDO DE CARBONO, Y UNA PARTE INFERIOR DE ENFRIAMIENTO BAJO ATMOSFERA FORMADA ESENCIALMENTE POR ADMISION DE NITROGENO, CARACTERIZADO PORQUE, EN LA PARTE SUPERIOR A TEMPERATURA ELEVADA, EL NITROGENO DE CONSTITUCION DE LA ATMOSFERA SE SUMINISTRA POR ADMISION DE NITROGENO CON CONTENIDO EN OXIGENO RESIDUAL ENTRE 0,5 Y 5 %, ELABORADO POR SEPARACION DE AIRE SEGUN LAS TECNICAS DE PERMEACION O DE ADSORCION, ESTANDO EN TODO MOMENTO DICHAS ESPECIES REDUCTORAS PRESENTES EN CONTENIDOS POR LO MENOS SUFICIENTES PARA ELIMINAR EL OXIGENO ASI ADMITIDO CON EL NITROGENO, MIENTRAS QUE EL NITROGENO ADMITIDO EN LA PARTE INFERIOR DE ENFRIAMIENTO ES DEL TIPO ELABORADO PREVIAMENTE A LA ELIMINACION COMPLETA DEL OXIGENO RESIDUAL. APLICACIONES DEL PROCEDIMIENTO ESPECIALMENTE AL RECOCIDO DE PIEZAS METALICAS.
ES90401645T 1989-06-30 1990-06-14 Procedimiento de tratamiento termico de metales. Expired - Lifetime ES2075177T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8908786A FR2649123B1 (fr) 1989-06-30 1989-06-30 Procede de traitement thermique de metaux

Publications (1)

Publication Number Publication Date
ES2075177T3 true ES2075177T3 (es) 1995-10-01

Family

ID=9383322

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90401645T Expired - Lifetime ES2075177T3 (es) 1989-06-30 1990-06-14 Procedimiento de tratamiento termico de metales.

Country Status (7)

Country Link
US (1) US5069728A (es)
EP (1) EP0406047B1 (es)
JP (1) JPH0347914A (es)
CA (1) CA2020077A1 (es)
DE (1) DE69021658T2 (es)
ES (1) ES2075177T3 (es)
FR (1) FR2649123B1 (es)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4016183A1 (de) * 1990-05-19 1991-11-21 Linde Ag Verfahren zur verbesserten bereitstellung von behandlungsgas bei waermebehandlungen
KR940003784B1 (ko) * 1990-07-31 1994-05-03 가와사키 세이데츠 가부시키가이샤 침탄 · 침질대를 구비한 연속 어닐링로
FR2668166B1 (fr) * 1990-10-18 1994-05-20 Air Liquide Procede d'elaboration d'une atmosphere controlee pour traitement thermique de metaux.
US5221369A (en) * 1991-07-08 1993-06-22 Air Products And Chemicals, Inc. In-situ generation of heat treating atmospheres using non-cryogenically produced nitrogen
US5259893A (en) * 1991-07-08 1993-11-09 Air Products And Chemicals, Inc. In-situ generation of heat treating atmospheres using a mixture of non-cryogenically produced nitrogen and a hydrocarbon gas
US5342455A (en) * 1991-07-08 1994-08-30 Air Products And Chemicals, Inc. In-situ generation of heat treating atmospheres using a mixture of non-cryogenically produced nitrogen and a hydrocarbon gas
DE4212307C2 (de) * 1992-04-13 1994-07-28 Messer Griesheim Gmbh Verfahren zur Herstellung eines Schutz- oder Reaktionsgases für die Wärmebehandlung von Metallen
US5417774A (en) * 1992-12-22 1995-05-23 Air Products And Chemicals, Inc. Heat treating atmospheres
US5320818A (en) * 1992-12-22 1994-06-14 Air Products And Chemicals, Inc. Deoxygenation of non-cryogenically produced nitrogen with a hydrocarbon
US5284526A (en) * 1992-12-22 1994-02-08 Air Products And Chemicals, Inc. Integrated process for producing atmospheres suitable for heat treating from non-cryogenically generated nitrogen
US5298090A (en) * 1992-12-22 1994-03-29 Air Products And Chemicals, Inc. Atmospheres for heat treating non-ferrous metals and alloys
US5254180A (en) * 1992-12-22 1993-10-19 Air Products And Chemicals, Inc. Annealing of carbon steels in a pre-heated mixed ambients of nitrogen, oxygen, moisture and reducing gas
US5348592A (en) * 1993-02-01 1994-09-20 Air Products And Chemicals, Inc. Method of producing nitrogen-hydrogen atmospheres for metals processing
US5401339A (en) * 1994-02-10 1995-03-28 Air Products And Chemicals, Inc. Atmospheres for decarburize annealing steels
EP0763143A4 (en) * 1994-04-25 1997-06-11 Sturm Ruger & Co METHOD FOR TREATING TITANIUM PARTS
US5441581A (en) 1994-06-06 1995-08-15 Praxair Technology, Inc. Process and apparatus for producing heat treatment atmospheres
US5968457A (en) * 1994-06-06 1999-10-19 Praxair Technology, Inc. Apparatus for producing heat treatment atmospheres
NZ314334A (en) * 1996-04-19 1997-09-22 Boc Group Inc Method of heat treating a metal with nitrogen rich gas preheated and then having oxygen-reactive gas added
IT1291205B1 (it) * 1997-03-18 1998-12-29 Rivoira S P A Procedimento per la generazione di un'atmosfera protettiva a basso punto di rugiada ed esente da ossigeno, per l'effettuazione di
US6168774B1 (en) 1997-08-07 2001-01-02 Praxair Technology, Inc. Compact deoxo system
US6458217B1 (en) 2000-02-29 2002-10-01 American Air Liquide, Inc. Superadiabatic combustion generation of reducing atmosphere for metal heat treatment
US6533996B2 (en) * 2001-02-02 2003-03-18 The Boc Group, Inc. Method and apparatus for metal processing
DE10347312B3 (de) * 2003-10-08 2005-04-14 Air Liquide Deutschland Gmbh Verfahren zur Wärmebehandlung von Eisenwerkstoffen

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB671421A (en) * 1949-08-12 1952-05-07 Edward Alfred Wheeley Improvements in and relating to production of nitrogen or nitrogen-hydrogen mixtures
DE1063624B (de) * 1957-07-25 1959-08-20 Robert Von Linde Dipl Ing Industrieofen
US3492378A (en) * 1968-05-13 1970-01-27 Bethlehem Steel Corp Method of operation of a continuous strip heating furnace
US3950192A (en) * 1974-10-30 1976-04-13 Monsanto Company Continuous carburizing method
US4049472A (en) * 1975-12-22 1977-09-20 Air Products And Chemicals, Inc. Atmosphere compositions and methods of using same for surface treating ferrous metals
US4183773A (en) * 1975-12-25 1980-01-15 Nippon Kakan Kabushiki Kaisha Continuous annealing process for strip coils
GB2018299A (en) * 1978-01-17 1979-10-17 Boc Ltd Heat treatment of metal
DE2844167C2 (de) * 1978-10-10 1984-07-26 Fa. J. Aichelin, 7015 Korntal Verfahren zur Erzeugung einer Stickstoff-Schutzgasatmosphäre in einer Ofenkammer und Schutzgasindustrieofen zur Durchführung dieses Verfahrens
US4359351A (en) * 1979-10-23 1982-11-16 Air Products And Chemicals, Inc. Protective atmosphere process for annealing and or spheroidizing ferrous metals
US4334938A (en) * 1980-08-22 1982-06-15 Air Products And Chemicals, Inc. Inhibited annealing of ferrous metals containing chromium
US4415379A (en) * 1981-09-15 1983-11-15 The Boc Group, Inc. Heat treatment processes
FR2524006B1 (fr) * 1982-03-23 1985-10-11 Air Liquide Procede de durcissement superficiel de pieces metalliques
JPS63310915A (ja) * 1987-06-10 1988-12-19 Daido Steel Co Ltd 連続式熱処理炉の操業方法

Also Published As

Publication number Publication date
DE69021658D1 (de) 1995-09-21
EP0406047A1 (fr) 1991-01-02
JPH0347914A (ja) 1991-02-28
FR2649123B1 (fr) 1991-09-13
DE69021658T2 (de) 1996-02-01
FR2649123A1 (fr) 1991-01-04
CA2020077A1 (fr) 1990-12-31
EP0406047B1 (fr) 1995-08-16
US5069728A (en) 1991-12-03

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