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National standards and national normative documents

Publication date

April 1962

Number of pages

8 p.

Reference

NF A91-131

ICS Codes

25.220.40 Metallic coatings

Classification index

A91-131

Print number

1 - novembre 1981

Table of contents

CHAPITRE I. - GÉNÉRALITÉS
Objet de la Norme
2
Nomenclature des contrôles de revêtement
2
Prélèvement des échantillons
2
Zinc pour galvanisation
2
CHAPITRE Il. - EXAMEN SUPERFICIEL
Examen du revêtement
3
CHAPITRE III. - CONTROLE DE L'ADHÉRENCE
Principe de l'essai et éprouvette
3
Description de l'essai.
3
Interprétation del'essai
3
CHAPITRE IV
CONTROLE DE LA MASSE DE ZINC PAR UNITÉ DE SURFACE
Principe de l'essai.
3
Préparation des éprouvettes
4
Description del'essaigazométrique
4
a) Appareillage
4
b) Mode opératoire
4
CHAPITRE V. - CONTROLE DE LA CONTINUITÉ DU REVÊTEMENT
Principe de l'essai
5
Préparation del'éprouvette
5
Réactif.
5
Description de l'essai.
5
Interprétation del'essai
6
CHAPITRE VI
CLASSIFICATION DES REVÊTEMENTS DES FILS GALVANISÉS
Observations générales
6
Principe des classifications
6
Classe A
6
Classe B
7
a) Fils d'acier doux
7
b) Fils d'acier dur (retréfilés après galvanisation)
7
Classe C
7
a) Fils d'acier doux
8
b) Fils d'acier dur (galvanisés en opération finale)
8
CHAPITRE VII
Conduite et interprétation des essais de contrôle
8

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