Une préface
OIN (Organisation internationale de normalisation) est une alliance mondiale d'organismes de normalisation nationaux (Comités membres de l'ISO). L'élaboration de normes internationales est généralement réalisée par l'intermédiaire de comités techniques ISO.. Interested in the subject of which a technical committee has been set up for each of the members have the right to send representatives to attend in the committee. Les organisations internationales gouvernementales et non gouvernementales qui assurent la liaison avec les organismes de normalisation sont également impliquées dans ces travaux.. ISO with the international electrotechnical commission (CEI) has electrician standardized all items close cooperation.

International standards are drafted according to the rules given in Part 2 de la directive ISO/CEI.

La tâche principale du comité technique est d'élaborer des normes internationales. Technical committee through the draft international standards will be distributed to the members of the organization. As members of the international standard release need at least 75% of the agency for approval.

OIN 19840-2012 “Peintures et vernis chinois - Critères de mesure et d'acceptation de l'épaisseur du film sec sur surfaces rugueuses”

Please note that some of the contents of this document may belong to the patent right topic. L'ISO n'est pas responsable de l'identification de tout ou partie de ces droits de brevet.

OIN 19840 a été développé par le comité technique ISO/TC 35, Paints and varnishments, Sous-comité SC 14, Protective coating Systems for steel Structures.

Second edition cancel and replace the first edition (OIN 19840:2004), the first edition on technical and edit the revised as follows:

UN) improve the description of the principle of the measurement method in 4.2;

B) introduced the eddy current measuring equipment instructions (voir 5.2.4);

Chiffre 1 c) has nothing to do with the language;

d) In line A8 of Annex E, references to lines A7 and A8 have been corrected to A6 and A7;

e) In line B1 of Annex E, the reference to ISO 8503-1 has been corrected to read “relevant parts of ISO 8501”;

F) A bibliography is added for reference to ISO 8501-1 to ISO 8501-4.

OIN 19840-2012 “Peintures et vernis chinois - Critères de mesure et d'acceptation de l'épaisseur du film sec sur surfaces rugueuses”

Introduction
This international standard complements the ISO 12944 series of standards for measurement and acceptance of dry film thickness. If the specified or agreed, this standard can also be used in other applications.

The goal of this international standard is measurement on rough surface coating dry film thickness uniformity of practice. The chosen method requires the measurement of dry film thickness using a measuring instrument based on the principle of permanent magnet and induction magnet. Can use instruments using eddy current principle, but they are usually used in non-ferrous metal surface.

If the coating is applied to a rough steel substrate, the measurement of its dry film thickness is more complicated than that of a smooth surface. Rough steel substrates include substrates prepared by sandblasting cleaning or abrasion.

The influence of surface roughness on the measurement results increases with the depth of the profile, but the results also depend on the design of the measurement probe and the thickness of the coating.

Appendix A is informative and is a method based on adjusting the instrument to a known thickness on a rough surface. In this method, no correction values are used. Dans cette norme, a single reading is used. Annex B describes a method of reading many times. The methods in Annexes A and B are used only when specified or agreed.

OIN 19840-2012 “Peintures et vernis chinois - Critères de mesure et d'acceptation de l'épaisseur du film sec sur surfaces rugueuses”

1 Portée
This international standard specifies the validation according to the nominal dry film thickness on the rough surface dry film thickness of the program, including the definition of the adjustment of the instruments used, inspection area, sampling plan, measurement methods and acceptance/reject criteria.

For the purpose of this standard, any given thickness are regarded as defined in ISO 12944-5 of the nominal thickness, dry film thickness is peak above the typical thickness of surface profile.

The procedures described in this standard are based on instruments using permanent magnets, electromagnets and eddy current types. Instrument accuracy is verified at zero and known thickness on a smooth surface and adjusted if necessary.

As a result, the rough on the coating on steel substrate for measuring the peak value of outline will be higher than the actual value. The dry film thickness above the profile peak was defined as the instrument reading minus the appropriate correction value.

Dry film thickness is using in smooth and flat steel based on the surface of readings to adjust the appropriate correction.

If specified or agreed on a single reading based on adjustment on a smooth, flat steel surface without the use of correction values, it is important to recognize that the method does not comply with this international Standard.

If the nominal dry film thickness of 40 microns or larger, this standard applies.

Note that if the nominal thickness is less than the surface roughness of the substrate, the measurement uncertainty will increase.

OIN 19840-2012 “Peintures et vernis chinois - Critères de mesure et d'acceptation de l'épaisseur du film sec sur surfaces rugueuses”

2 Références normatives
Les références suivantes sont requises pour l’application de ce document. Pour les références datées, only for reference version. Pour les références non datées, la nouvelle version de la référence (y compris toutes les révisions) s'applique.

OIN 2808, Peintures et vernis — Détermination de l'épaisseur du film

OIN 8503-1, preparation before coating of paint and related products of steel matrix – shot blast cleaning of steel substrate surface roughness properties – partie 1: to evaluate the ISO surface profile of sandblasting the surface cleaning specification and the definition of the comparator

OIN 12944-1, Peintures et vernis – Corrosion protection of steel structures through protective coating systems – Partie 1: General introduction

OIN 12944-2, Peintures et vernis – Corrosion protection of steel structures by protective coating systems – Partie 2: Environmental classification

OIN 12944-3, Peintures et vernis – Corrosion protection of steel structures by protective coating systems – Partie 3: Design considerations

OIN 12944-4, Peintures et vernis — Corrosion protection of steel structures by protective coating systems — Partie 4: Types of surfaces and finishes

OIN 19840-2012 “Peintures et vernis chinois - Critères de mesure et d'acceptation de l'épaisseur du film sec sur surfaces rugueuses”

OIN 12944-5, Peintures et vernis — Corrosion protection of steel structures with protective coating systems — Partie 5: Protective coating systems

OIN 12944-6, peintures et vernis – through the protective coating system for steel structure corrosion protection – partie 6: laboratory performance test methods

OIN 12944-7, peintures et vernis – through the protective coating system for steel structure corrosion protection – partie 7: paint job execution and supervision

OIN 12944-8, Peintures et vernis – Corrosion protection of steel structures by protective coating systems – Partie 8: Development of new work and maintenance specifications

OIN 19840-2012 “Peintures et vernis chinois - Critères de mesure et d'acceptation de l'épaisseur du film sec sur surfaces rugueuses”

3 Termes et définitions
Aux fins de ce document, les termes et définitions suivants s'appliquent.

3.1 Dry film thickness EF5

When coating hardening residual film thickness on rough surface peak

3.2 Personal Reading

The number displayed by the film thickness meter

3.3 Corrected value

Allow the effect of sandblasting or other rough surfaces on the film thickness meter reading

3.4 separate dry film thickness

A single reading is subtracted from the corrected value

3.5 Average dry film thickness

Arithmetic mean of all individual dry film thicknesses in the detection area

3.6 nominal NDFT dry film thickness

For each layer of coating or the specified dry film thickness of the coating system, in order to achieve the required durability

3.7 Inspection Area

Sampling plan for its designated area, can be the entire structure or part of the whole structure

OIN 19840-2012 “Peintures et vernis chinois - Critères de mesure et d'acceptation de l'épaisseur du film sec sur surfaces rugueuses”

3.8 sampling plan

A plan that defines the number of measurements to be made on the inspection area

3.9 ajuster

The process of aligning the readings of a dry film thickness gauge with known thickness values to improve the accuracy of a thickness gauge on a specific surface or within a specific part of its measuring range

3.10 Profil de surface

The microscopic roughness of the surface

Note 1: This is usually expressed as the height of the main peaks relative to the main valleys.

12] [source: OIN 8503-1:

OIN 19840-2012 “Peintures et vernis chinois - Critères de mesure et d'acceptation de l'épaisseur du film sec sur surfaces rugueuses”

3.11 Maximum dry film thickness

The maximum allowable dry film thickness beyond which the performance of the paint or paint system may be impaired

Only standard piece of information is public. Pour voir le contenu complet, you need to buy the standard through normal channels.