introduction
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ISO 22553-4-2019 Electrodeposited coatings for paints and varnishes – Part 4: Compatibility of electrodeposited coatings with liquid, paste and solid foreign bodies

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This document was prepared by Technical Committee ISO/TC 35, Paints and Varnishes, Subcommittee SC 9, Common Test Methods for paints and varnishes.

A list of all the parts in the ISO 22553 series can be found on the ISO website.

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ISO 22553-4-2019 Electrodeposited coatings for paints and varnishes – Part 4: Compatibility of electrodeposited coatings with liquid, paste and solid foreign bodies

introduce
In the electrodeposition coating process, foreign bodies used in the downstream production process pass through the electrodeposition coating tank. As a result, contamination of the electrodeposited coating tank material or defects of the coating surface may occur. For example, foreign objects may be oils, adhesives, insulation, and plastic building components.

ISO 22553-3 describes test methods for determining the compatibility of electrodeposited coating materials with reference oils that affect the properties of electrodeposited coatings.

1 Scope of Application
The document specifies three different methods for contaminating liquid, paste, and solid foreign bodies with electrodeposited coating materials.

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

2 Normative reference documents
When the following documents are referenced in the text, some or all of them constitute the requirements of this document. For dated references, only the cited version applies. For undated citations, a new version of the referenced document (including any revisions) applies.

ISO 22553-4-2019 Electrodeposited coatings for paints and varnishes – Part 4: Compatibility of electrodeposited coatings with liquid, paste and solid foreign bodies

ISO 1514, Paints and varnishes – Standard boards for testing

ISO 2808, Paints and varnishes – Determination of film thickness

ISO 4618, paints and varnishes – terms and definitions

ISO 22553-1, Paints and varnishes – electrodeposited coatings – Part 1: Vocabulary

ISO 23321, Paints and varnishes solvents – softening waters for industrial applications – Specification and test methods

3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4618, ISO 22553-1 and the following apply.

3.1 Foreign Bodies

Conscious or unconscious contaminants are used in all downstream processes up to the baking of electrodeposited coatings

Examples: adhesives, insulating materials, drawing oils, anti-corrosion oils, pre-lubricants (special oils with drawing and anti-corrosion oil properties)

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