ES8300867A1 - "un metodo de control de la atmosfera de un horno para controlar el contenido de carbono del acero o el hierro colado". - Google Patents

"un metodo de control de la atmosfera de un horno para controlar el contenido de carbono del acero o el hierro colado".

Info

Publication number
ES8300867A1
ES8300867A1 ES508674A ES508674A ES8300867A1 ES 8300867 A1 ES8300867 A1 ES 8300867A1 ES 508674 A ES508674 A ES 508674A ES 508674 A ES508674 A ES 508674A ES 8300867 A1 ES8300867 A1 ES 8300867A1
Authority
ES
Spain
Prior art keywords
flow
furnace atmosphere
nitrogen
maintain
predetermined value
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
ES508674A
Other languages
English (en)
Other versions
ES508674A0 (es
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.)
Holcroft and Co
Original Assignee
Holcroft and Co
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 Holcroft and Co filed Critical Holcroft and Co
Publication of ES508674A0 publication Critical patent/ES508674A0/es
Publication of ES8300867A1 publication Critical patent/ES8300867A1/es
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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Furnace Details (AREA)

Abstract

PROCEDIMIENTO DE CONTROL DEL CONTENIDO DE CARBONO DEL ACERO O HIERRO COLADO MEDIANTE CONTROL DE LA ATMOSFERA DEL HORNO. CONSISTE EN INTRODUCIR UNA CANTIDAD PRINCIPAL DE UN GAS PORTADOR SUSTANCIALMENTE NEUTRO, CONSTITUIDO POR UNA SUBSTANCIA HIDROCARBONADA Y NITROGENO, Y UNA PEQUEÑA CANTIDAD DE GAS ADITIVO PARA CONTROLAR EL POTENCIAL DE CARBONO DE LA ATMOSFERA DEL HORNO, Y MANTENER EL CONTENIDO DE CO EN LA ATMOSFERA EN UN VALOR PREFIJADO CONTROLANDO LA RELACION ENTRE LA SUBSTANCIA HIDROCARBONADA Y EL NITROGENO, Y CONTROLAR EL POTENCIAL DE CARBONO ACTUANDO SOBRE LA CANTIDAD DE GAS ADITIVO. LA SUBSTANCIA HIDROCARBONADA ES PREFERENTEMENTE METANOL. LA COMPROBACION DEL CONTENIDO DE CO EN LA ATMOSFERA Y EL POTENCIAL DE CARBONO DE LA MISMA SE HACEN POR SEPARADO, Y LOS CONTROLES DE GAS PORTADOR Y GAS ADITIVO SE REALIZAN POR MEDIOS DE VALVULAS INDEPENDIENTES.
ES508674A 1981-01-14 1982-01-13 "un metodo de control de la atmosfera de un horno para controlar el contenido de carbono del acero o el hierro colado". Expired ES8300867A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22484981A 1981-01-14 1981-01-14

Publications (2)

Publication Number Publication Date
ES508674A0 ES508674A0 (es) 1982-11-01
ES8300867A1 true ES8300867A1 (es) 1982-11-01

Family

ID=22842495

Family Applications (1)

Application Number Title Priority Date Filing Date
ES508674A Expired ES8300867A1 (es) 1981-01-14 1982-01-13 "un metodo de control de la atmosfera de un horno para controlar el contenido de carbono del acero o el hierro colado".

Country Status (5)

Country Link
JP (1) JPS57140821A (es)
DE (1) DE3149212A1 (es)
ES (1) ES8300867A1 (es)
FR (1) FR2500848A1 (es)
GB (1) GB2092183A (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2527641A1 (fr) * 1982-05-28 1983-12-02 Air Liquide Procede de traitement thermique de pieces metalliques par carburation
DE3403987A1 (de) * 1984-02-04 1985-10-10 Nicolai, Stephan Peter, 4230 Wesel Verfahren zur herstellung von halbsynthetischen schutz- und reaktionsgasen, insbesondere zur waermebehandlung von stahl- und metallwerkstoffen, bestehend aus einer mischung unterschiedlich waehlbarer mengen von stickstoff, wasserstoff, kohlenmonoxyd, kohlendioxyd sowie wasserdampf
DE3436267A1 (de) * 1984-10-03 1986-05-15 Process-Electronic Analyse- und Regelgeräte GmbH, 7336 Uhingen Verfahren zum regeln des kohlenstoffpegels in einem gasaufkohlungsofen
FR2586259B1 (fr) * 1985-08-14 1987-10-30 Air Liquide Procede de cementation rapide dans un four continu
JP3460075B2 (ja) * 1995-12-28 2003-10-27 同和鉱業株式会社 金属の浸炭方法
JP3409236B2 (ja) * 1997-02-18 2003-05-26 同和鉱業株式会社 熱処理炉の雰囲気制御方法
US6635121B2 (en) * 2000-02-04 2003-10-21 American Air Liquide, Inc. Method and apparatus for controlling the decarburization of steel components in a furnace
JP5607453B2 (ja) * 2010-08-02 2014-10-15 日本エア・リキード株式会社 熱処理雰囲気ガスの供給装置および供給方法

Also Published As

Publication number Publication date
FR2500848A1 (fr) 1982-09-03
GB2092183A (en) 1982-08-11
DE3149212A1 (de) 1982-08-05
JPS57140821A (en) 1982-08-31
ES508674A0 (es) 1982-11-01

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