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Norma Técnica
ISO 8502-2:2005   CANCELADA
Data de Publicação : 14/10/2005
Título : Preparation of steel substrates before application of paints and related products — Tests for the assessment of surface cleanliness — Part 2: Laboratory determination of chloride on cleaned surfaces
Título Idioma Sec. : Préparation des subjectiles d'acier avant application de peintures et de produits assimilés — Essais pour apprécier la propreté d'une surface — Partie 2: Recherche en laboratoire des chlorures sur les surfaces nettoyées
Comitê : ISO/TC 35 Paints and varnishes
Páginas : 6
Status : Cancelada em 10/01/2017  Substituída por : ISO 8502-2:2017
Idioma : Inglês
Motivo do Cancelamento :
Organismo : ISO - International Organization for Standardization
Objetivo : ISO 8502-2:2005 describes a method for the determination of chloride-containing salts that are readily soluble in water and are present on a steel surface. The method is also applicable to previously coated surfaces. It will normally be used in a laboratory using washings sampled from surfaces on site. ISO 8502-2:2005 is applicable to the determination of salts that have been deposited on the steel surface before, during or after the cleaning operations. ISO 8502-2:2005 is not applicable to surfaces treated with chromate, nitrite or amine, which are commonly used as inhibitors in the water when wet blast-cleaning. This is because a chromate concentration of 10 mg/l or greater or a nitrite concentration of 20 mg/l or greater in the wash water interferes with the determination of the chloride. Also the amine inhibitors can form a hydroxide boundary layer (not water soluble) over the substrate and prevent the water from contacting the underlying salt for its removal. An iron(III) ion concentration of 10 mg/l also interferes with the determination, but the iron(III) ions are concentrated in the rust deposits, which are removed from the test solution by filtration.
Normas Necessárias para a aplicação da ISO 8502-2:2005
ISO 8502-10:1999
ISO 8502-11:2006
ISO 8502-12:2003
ISO 8502-2:1992
ISO 8502-2:2005
ISO 8502-3:1992
ISO 8502-4:1993
ISO 8502-5:1998
ISO 8502-6:1995
ISO 8502-6:2006
ISO 8502-8:2001
ISO 8502-9:1998
ISO 8502-9:2020
ISO/TR 8502-1:1991
Normas Substitutas da ISO 8502-2:2005
ISO 8502-2:2017
25.220.10 - Preparação de superfícies
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