introduzione
ISO (Organizzazione internazionale per la standardizzazione) è una federazione globale di organismi di normalizzazione nazionali (Organismi membri dell'ISO). Lo sviluppo di standard internazionali viene solitamente effettuato attraverso i comitati tecnici ISO. Ciascun gruppo aderente interessato ad un argomento per il quale è stato costituito un Comitato tecnico ha il diritto di essere rappresentato nel Comitato. Organizzazioni internazionali, In questo lavoro sono coinvolti anche i governi e le organizzazioni non governative in contatto con l'ISO. L'ISO lavora a stretto contatto con la Commissione Elettrotecnica Internazionale (CEI) su tutte le questioni di standardizzazione elettrica.

Parte 1 of the ISO/IEC Directive describes the procedures used to develop this document and for further maintenance. In particolare, occorre prestare attenzione ai diversi criteri di approvazione richiesti per i diversi tipi di documenti ISO. Il presente documento è stato redatto in conformità alle regole redazionali della Direttiva ISO/IEC Parte 2 (vedere iso.org/directives).

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ISO 22553-1- Pitture e vernici rivestimenti elettrodepositati – Parte 1: Vocabolario

Interpretazione volontaria, related standards and conformity assessment related ISO specific terminology and express the meaning of and the ISO in the technical barriers to trade (TBT) aderire al principio dell’organizzazione mondiale del commercio (OMC) informazione, please see the iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 35, Pitture e vernici, Sottocommissione SC 9, Metodi di prova comuni per pitture e vernici.

Un elenco di tutte le parti nell'ISO 22553 serie possono essere trovate sul sito web ISO.

Any feedback or questions on this document should be referred to the user’s national standards body. A complete list of these institutions can be found at iso.org/members.html.

introdurre
In the electrodeposition coating process, the non-volatile substances in the water-dilutive electrodeposition coating are deposited on the workpiece by the electrophoretic process. During this process, the internal and external areas of the workpiece, including all cavities, are touched. Cathode deposition or anode deposition is distinguished according to whether the workpiece is used as cathode or anode. The cathodic electrodeposition coating process is commonly used (see Figure 1).

Figura 1 – Example of the deposition process during cathodic electrodeposition coating

ISO 22553-1- Pitture e vernici rivestimenti elettrodepositati – Parte 1: Vocabolario

Key

Through the combination of adhesives, pigments and deposition processes, hardening creates a very corrosion-resistant coating on the workpiece, which contributes significantly to corrosion protection in both internal and external areas.

The electrical properties of the material are also important for the electrical energy consumption (bulk charge density) of the process.

Since the electrophoretic paint is jointly responsible for the overall appearance of the coating system, it is often emphasized that the coating works well and has no visible defects.

Perciò, for extensive corrosion protection and sealing of the workpiece, additional joint sealing materials, adhesives or foams are recommended.

Inside the electrophoresis tank, bacterial contamination may be present due to the material being dragged in and the physical conditions (Calore, water-based media, carbon sources, eccetera.).

This document specifies the terms and definitions of electrodeposited coatings. The subsequent part of the ISO 22553 series specifies methods of characterization and testing of electrodeposited coatings. An overview of the test methods is given in Annex A.

ISO 22553-1- Pitture e vernici rivestimenti elettrodepositati – Parte 1: Vocabolario

1 Ambito di applicazione
This document defines the terms for electrodeposited coatings.

It is suitable for electrodeposition coatings in the automotive industry and other general industrial applications, such as chiller, consumer goods, radiators, aerospaziale, agricoltura.

2 Documenti normativi di riferimento
There are no normative references in this document.

3 Termini e definizioni

3.1 Volume charge density ρ

Quotient of charge Q and volume V, as shown in the formula:

Pitture e vernici – electrodeposited coatings – Parte 1: Glossary Diagram 2

Nota 1: The volume charge density is expressed in coulombs per cubic meter (C/m 3).

Nota sull'articolo 2:1 C/m 3 = 1 A⋅s/m 3.

3.2 Deposition voltage u

The voltage is adjusted on the corresponding device to deposit an electrodeposited coating material (3.9) by an anode or cathode method, having a film thickness specified for the coating material

Nota 1: The deposition voltage is measured in volts (V).

3.3 Deposition time

The time required to obtain the desired film thickness

3.4 Anode electrodeposition coating process

Anodic electrophoresis process

A variant of an electrodeposited coating in which the coated components are connected as an anode and the reverse electrode is connected as a cathode

3.5 Pigment content, determined by ashing

Mass fraction of residue after ashing of the product under specified conditions

Nota 1: It includes inorganic pigments, riempitivi, and other solid components of the product that do not evaporate under test conditions, but their state may change.

3.6 Baking Process

The final drying and chemical crosslinking process of the applied paint film is initiated by heating

ISO 22553-1- Pitture e vernici rivestimenti elettrodepositati – Parte 1: Vocabolario

3.7 Perdita di cottura

Volatiles released under standard baking conditions

Nota 1: Baking loss includes reaction loss.

3.8 Entry Tags

Visible defects that occur during the immersion of the panel under voltage, usually in the form of streaks parallel to the bath surface on the object to be painted

Esempio:

Hash marks (see Figure 5), pinholes (see Figure 4), mappings (see Figure 3).

3.9 Rivestimenti elettrodepositati

Electronic coating

Waterborne coatings for electrophoretic coating

3.10 Deposition time

The time that voltage is applied between anode and cathode during the coating process

3.11 Flores

Flower-shaped craters, formed by a combination of single craters

Nota di entrata 1: Guarda la figura 2 for an example.

Figura 2 – Flores’ example

ISO 22553-1- Pitture e vernici rivestimenti elettrodepositati – Parte 1: Vocabolario

3.12 Protezione dei bordi

The ability to protect edges from corrosion

Nota sull'articolo 1: Edges may be produced by drilling, punching, and cutting.

3.13 Edge corrosion

Corrosion due to inadequate edge protection (3.12)

Nota sull'articolo 1: Edges may be produced by drilling, punching, and cutting.

3.14 Cathode electrodeposition coating process

Cathodic electrophoresis

A variant of an electrodeposited coating in which the coated parts are connected as a cathode and the reverse electrode is connected as an anode

ISO 22553-1- Pitture e vernici rivestimenti elettrodepositati – Parte 1: Vocabolario

3.15 Bacteria count

Colony count

The number of colony forming units (CFU) to form a macroscopically countable colony

3.16 Mapping

Local differences in film thickness in electrodeposited films

Nota di entrata 1: Guarda la figura 3 for an example.

Figura 3 – Mapping example

ISO 22553-1- Pitture e vernici rivestimenti elettrodepositati – Parte 1: Vocabolario

3.17 Pinholes

The holes in the coating extend all the way to the substrate

Nota sull'articolo 1: Pinholes are often mixed with craters.

Nota di entrata 2: Guarda la figura 4 for an example.

Figura 4 – pinhole example

3.18 Hash tag

Hydrogen attached during the process causes characteristic depressions in the electrodeposited coating

Nota sull'articolo 1: One characteristic of the pound sign is the direction of the horizontal line. In particolare, hash marks appear when the specimen is heavily impregnated.

Nota di entrata 2: Guarda la figura 5 for an example. A distinct hash mark can be detected on the right side that has been moistened with softening water. On the left side of the department, there are significantly fewer hash marks.

ISO 22553-1- Pitture e vernici rivestimenti elettrodepositati – Parte 1: Vocabolario

3.19 Stabilità

Electrodeposited coatings are often exposed to the aging process, especially during extended downtime (holidays, downtime, eccetera.), ad esempio:

– evaporation of water, solvents and neutralizers;

– Chemical changes in adhesives caused by air;

— bring in bacteria;

– Other reactions of the adhesive

3.20 Effort

The ability of the electrodeposited coating to penetrate the box section

3.21 Workpieces

Objects coated with material

ISO 22553-1- Pitture e vernici rivestimenti elettrodepositati – Parte 1: Vocabolario

Esempio:

Pipes, radiators, vehicles, steel test plates, magnesium and aluminum alloys, pre-treated plastics.

3.22 Rupture voltage

Electrodeposition coatings deposit a potential that is no longer controllable, Per esempio, a significant change in film thickness, gas formation, or heat generation

Nota 1: The rupture voltage can only be determined experimentally by the voltage series.

Solo la sezione informativa standard è pubblica. Per vedere il contenuto completo, è necessario acquistare lo standard attraverso i canali ufficiali.