EN ISO 22553-8:2021 PDF

Name: EN ISO 22553-8:2021 — Paints and varnishes - Electro-deposition coatings - Part 8: Electric charge density (ISO 22553-8:2020)
SKU: EN ISO 22553-8:2021
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Paints and varnishes - Electro-deposition coatings - Part 8: Electric charge density (ISO 22553-8:2020)

Название (английский):

EN ISO 22553-8:2021

Paints and varnishes - Electro-deposition coatings - Part 8: Electric charge density (ISO 22553-8:2020)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 18
Дата публикации:: 1 сентября 2021 г.
Издание:: CEN EN 22553 edition 1 version 1
ICS:: 87.040

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Описание (английский):

This document specifies a method for determining the electric charge density of an electro-deposition coating (e‑coat) for automotive industries and other general industrial applications, e.g. chiller units, consumer products, radiators, aerospace, agriculture.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 22553-8:2021 - "Paints and varnishes - Electro-deposition coatings - Part 8: Electric charge density" specifies a laboratory method to determine the electric charge density of electro-deposition coatings (e‑coat). Adopted from ISO 22553-8:2020, this CEN standard targets automotive and general industrial applications (e.g., chiller units, radiators, consumer products, aerospace, agriculture). The electric charge density (expressed in coulombs per cubic metre, C·m⁻³) provides a quantitative indicator of deposition efficiency during e-coating.

Key topics and technical requirements

Scope and purpose: Measurement of volume electric charge density to characterise e-coat deposition performance.

Test panels and area: Electrically conductive panels, approx. 190 × 105 × 0.75 mm; masked coating area ≈ 280 cm² (both faces). Exact area must be recorded.

Apparatus: Laboratory deposition system with tank recirculation and DC power supply, amperemeter, thermometer (±0.1 °C), film-thickness device (±0.1 µm), analytical balance (0.0001 g), controlled oven.

Deposition procedure: Panels immersed in homogenized bath, deposition run between minimum and critical current densities; voltage/time selected to achieve nominal dry-film thickness. Rinsing with demineralized water and stoving (object temperature) follow deposition.

Measurements and calculations: Dry-film thickness measured at five locations per side (ISO 2808 methods), panel mass before/after coating used to calculate charge density. Standard provides methods to express charge density per unit mass and per unit volume; Annex A covers calculations using practical or theoretical dry-film density (ISO 3233-2 / ISO 3233-3).

Quality controls: Duplicate determinations recommended; stoving temperature, bath temperature control, and precision limits for instruments are specified.

Applications and who uses this standard

Quality assurance teams in automotive and industrial coating operations use this standard to verify deposition efficiency and process reproducibility.

Process engineers and R&D laboratories apply the method to optimize bath chemistry, current density and curing schedules.

Coating formulators and suppliers use charge-density data to compare formulations and ensure consistent coverage.

Certification and compliance personnel rely on standardized test results for supplier evaluations and contract specifications.

Related standards

ISO 22553-1 (Vocabulary for electro-deposition coatings)

ISO 22553-7 (Electrical wet-film resistance - related measurements)

ISO 2808 (Film thickness determination)

ISO 3233-2 / ISO 3233-3 (Dry-film density: theoretical/practical)

ISO 1514, ISO 4618, ISO 23321 (test panels, terms, demineralized water)

EN ISO 22553-8:2021 is a practical, prescriptive method for laboratories and industry stakeholders who need reproducible, comparable measurements of electric charge density to control and improve e-coat processes.

EN ISO 22553-8:2021 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and who uses this standard

Related standards

Технические детали

ISO 22553-8:2020

Paints and varnishes — Electro-deposition coatings — Part 8: Electric charge density

SIST EN ISO 28080:2021

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BS EN ISO 22553-10:2023

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BS EN ISO 22553-7:2021

Paints and varnishes. Electro-deposition coatings. Electrical wet-film resistance.

BS ISO 15142-3:2003

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SIST EN ISO 4618:2023

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