NF EN ISO 14921

NF EN ISO 14921

April 2011
Standard Current

Thermal spraying - Procedures for the application of thermally sprayed coatings for engineering components

ISO 14921:2010 specifies the general procedure, when a thermally sprayed coating is applied to enhance the surface properties of a component or to reclaim worn and non-conforming parts.ISO 14921:2010 does not provide definitive methods for specific work due to the variety of the technological, physical and/or chemical requirements and of the component's shape.ISO 14921:2010 specifies the general conditions for the selection of the spraying procedure and materials for this purpose. ISO 14921:2010 does not apply to thermally sprayed zinc and/or aluminium coatings for protection of steel structures against atmospheric corrosion, for which ISO 2063 applies. ISO 14921:2010 also does not apply to coatings of self-fluxing alloys which are subsequently fused. That procedure is covered by ISO 14920.

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Main informations

Collections

National standards and national normative documents

Publication date

April 2011

Number of pages

20 p.

Reference

NF EN ISO 14921

ICS Codes

25.220.20   Surface treatment

Classification index

A91-215

Print number

1 - 22/04/2011

International kinship

ISO 14921:2010

European kinship

EN ISO 14921:2010
Sumary
Thermal spraying - Procedures for the application of thermally sprayed coatings for engineering components

ISO 14921:2010 specifies the general procedure, when a thermally sprayed coating is applied to enhance the surface properties of a component or to reclaim worn and non-conforming parts.

ISO 14921:2010 does not provide definitive methods for specific work due to the variety of the technological, physical and/or chemical requirements and of the component's shape.

ISO 14921:2010 specifies the general conditions for the selection of the spraying procedure and materials for this purpose. ISO 14921:2010 does not apply to thermally sprayed zinc and/or aluminium coatings for protection of steel structures against atmospheric corrosion, for which ISO 2063 applies.

ISO 14921:2010 also does not apply to coatings of self-fluxing alloys which are subsequently fused. That procedure is covered by ISO 14920.

Replaced standards (1)
NF EN ISO 14921
September 2002
Standard Cancelled
Thermal spraying - Procedures for the application of thermally sprayed coatings for engineering components

L'ISO 14921 traite des méthodes générales d'application des couches projetées thermiquement telles que définies dans l'EN 657. Ces revêtements permettent soit de récupérer des pièces usées et non conformes, soit d'améliorer les propriétés de la surface de pièces destinées à des applications spécifiques. Sont, par exemple, concernées les caractéristiques suivantes: résistance à l'usure, faible coefficient de frottement, isolation ou conductivité électrique ou thermique, et résistance à la corrosion. L'ISO 14921 ne vise pas à fournir des méthodes reconnues pour une pièce à traiter spécifique et il faut veiller d'une part, à choisir convenablement le procédé et les matériaux en fonction de l'application voulue, et d'autre part, à faire appel aux personnels ayant les compétences nécessaires en matière de projection thermique, telles que définies dans l'EN ISO 14918. Elle ne comprend pas aucune exigence sur la protection des structures en acier qui relèvent de l'EN 22063 ou sur l'utilisation des revêtements en alliages auto-fondants qui sont fondus à une étape ultérieure, relevant de l'EN ISO 14920.

Table of contents
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    1
  • 4 Dispositions relatives à la conception de la pièce et du revêtement
    2
  • 4.1 Généralités
    2
  • 4.2 Examen préalable en cas de réparation
    2
  • 4.3 Matériau de base de la pièce
    2
  • 4.4 Revêtement
    3
  • 5 Usinage préliminaire par usinage au tour, fraisage ou meulage
    3
  • 6 Masquage
    3
  • 7 Méthodes de préparation de la surface
    4
  • 8 Projection thermique
    4
  • 9 Examen après projection
    4
  • 10 Colmatage
    4
  • 11 Finition
    5
  • 12 Examen final
    5
  • 13 Documentation
    5
  • Annexe A (informative) Organigramme permettant d'évaluer l'adéquation de la projection thermique
    6
  • Annexe B (informative) Questionnaire d'évaluation du système de revêtement le plus approprié à l'application prévue
    7
  • Annexe C (informative) Fiche d'enregistrement du mode opératoire de projection thermique utilisé
    8
  • Bibliographie
    12
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