FR2413477A2 - Procede d'enduction de profiles en metal ferreux par immersion a chaud - Google Patents

Procede d'enduction de profiles en metal ferreux par immersion a chaud

Info

Publication number
FR2413477A2
FR2413477A2 FR7739887A FR7739887A FR2413477A2 FR 2413477 A2 FR2413477 A2 FR 2413477A2 FR 7739887 A FR7739887 A FR 7739887A FR 7739887 A FR7739887 A FR 7739887A FR 2413477 A2 FR2413477 A2 FR 2413477A2
Authority
FR
France
Prior art keywords
dew point
ferrous metal
degrees
aluminium
nitrogen
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
FR7739887A
Other languages
English (en)
Other versions
FR2413477B2 (fr
Inventor
Lawrence B Caldwell
James J Connolly
Richard Charles Barrett
Dudley Nelville Perske
Malcom Robert John Grove
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.)
Bethlehem Steel Corp
Original Assignee
Bethlehem Steel Corp
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 Bethlehem Steel Corp filed Critical Bethlehem Steel Corp
Priority to FR7739887A priority Critical patent/FR2413477A2/fr
Publication of FR2413477A2 publication Critical patent/FR2413477A2/fr
Application granted granted Critical
Publication of FR2413477B2 publication Critical patent/FR2413477B2/fr
Granted 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
    • C23C2/0222—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating in a reactive atmosphere, e.g. oxidising or reducing atmosphere
    • 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)

Abstract

SELON L'INVENTION, LA TENEUR EN HYDROGENE DE L'ATMOSPHERE REDUCTRICE, PROTECTRICE DANS LE CONDUIT (CAPUCHON) PROTECTEUR ET SON POINT DE ROSEE SONT ABAISSES. A SON ENTREE DANS LE CONDUIT, LE GAZ CHAUD CREANT CETTE ATMOSPHERE A UNE TEMPERATURE D'AU MOINS 400C, COMME DANS LE BREVET PRINCIPAL, MAIS SA TENEUR EN HYDROGENE PEUT ETRE COMPRISE ENTRE 6 ET 15 EN VOLUME SI LE POINT DE ROSEE NE DEPASSE PAS -73C.
FR7739887A 1977-12-30 1977-12-30 Procede d'enduction de profiles en metal ferreux par immersion a chaud Granted FR2413477A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7739887A FR2413477A2 (fr) 1977-12-30 1977-12-30 Procede d'enduction de profiles en metal ferreux par immersion a chaud

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7739887A FR2413477A2 (fr) 1977-12-30 1977-12-30 Procede d'enduction de profiles en metal ferreux par immersion a chaud

Publications (2)

Publication Number Publication Date
FR2413477A2 true FR2413477A2 (fr) 1979-07-27
FR2413477B2 FR2413477B2 (fr) 1983-10-14

Family

ID=9199588

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7739887A Granted FR2413477A2 (fr) 1977-12-30 1977-12-30 Procede d'enduction de profiles en metal ferreux par immersion a chaud

Country Status (1)

Country Link
FR (1) FR2413477A2 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2195699A1 (fr) * 1972-08-09 1974-03-08 Bethlehem Steel Corp

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2195699A1 (fr) * 1972-08-09 1974-03-08 Bethlehem Steel Corp

Also Published As

Publication number Publication date
FR2413477B2 (fr) 1983-10-14

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Legal Events

Date Code Title Description
TP Transmission of property