序文

ISO (国際標準化機構) 国家標準化団体の世界的な同盟です (ISO会員団体). 国際規格の開発は通常、ISO 技術委員会を通じて行われます。. 技術委員会が設立された主題に関心を持つ各加盟機関は、その委員会に代表される権利を有する。. ISO と連携する国際政府および非政府組織もこの作業に関与しています。. ISO は国際電気標準会議と緊密に連携しています。 (IEC) 電気技術の標準化に関するあらゆる事項について.

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This document is prepared by Technical Committee ISO/TC 35, 塗料とワニス, 分科会SC 12, Preparing steel substrates prior to application of paints and related products.

ISO 内のすべての部品のリスト 8504 シリーズは ISO Web サイトで見つけることができます.

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

ISO 8504-4-222 “塗料および関連製品を使用する前の鋼基材の準備 – 表面処理方法 – 一部 4: 酸洗い”

導入
The properties of protective coatings applied to steel and related products are significantly affected by the state of the steel surface before coating. The main factors known to affect this performance include:

— The presence of rust and dirt;

– The presence of surface contaminants, 塩を含む, ほこり, オイルとグリス;

– Surface outline.

ISO 8501, ISO 8502 およびISO 8503 series provide methods for assessing these factors. しかし, ISO 8504 series provides guidance on preparation methods that can be used to clean steel substrates, indicating the ability of each method to achieve specified levels of cleanliness.

This document describes pickling, an effective surface treatment method. It is widely used because this surface treatment method has many of the versatile functions listed below.

ある) 一般的に, equipment is fixed, but can be moved.

b) This method is suitable for most types and forms of steel surfaces, especially those deformed by sandblasting.

c) Removal of rust or mill scale and traces of non-steel metal from inside, outside and complex structural surfaces.

d) Pickling can be used for decorative and/or aesthetic purposes.

The Purchaser’s purchasing document shall include several items to supplement this document. Surface defects should be considered prior to surface treatment and coating application. ISO 8504 series does not contain recommendations for surface cleaning of equipment and cleaning of pipelines (例えば. chemical pipelines, petroleum pipelines).

ISO 8504 series does not contain recommendations for the application of protective coating systems to steel surfaces. ISO 8504 series does not contain recommendations for surface quality requirements for specific cases, even if surface quality has a direct impact on the choice of protective coatings and their properties. These recommendations are found in other documents such as national standards and codes of practice. ISO 8504 series is used to ensure that the specified quality is:

ある) Compatible with and applicable to the environmental conditions to which the steel will be exposed and the protective coating systems to be used;

b) within the scope of prescribed cleaning procedures.

Warnings The procedures described in this document are intended to be performed by appropriately trained and/or supervised personnel. The substances and procedures used in these methods can be hazardous to health if appropriate precautions are not taken. The text draws attention to some specific dangers. This document relates only to the technical applicability of the method and does not exempt the user from statutory obligations relating to health and safety.

ISO 8504-4-222 “塗料および関連製品を使用する前の鋼基材の準備 – 表面処理方法 – 一部 4: 酸洗い”

1 範囲
This document describes typical methods commonly used in shop facilities for pickling to prepare steel substrates prior to application of paints and related products. It is usually suitable for new steel structures.

This method is basically to remove rust and dirt. Usually, only slight oil residue can be removed during this process. It can be used on steel surfaces that are easily deformed by sandblasting.

2 規範的参照

以下のファイルは、内容の一部またはすべてがこの文書の要件を構成するように本文中で参照されています。. 日付の付いた参照については, 引用のみのバージョンが適用されます. 日付のない参考文献については, リファレンスの最新バージョン (改訂も含めて) 当てはまる.

ISO 8502 (すべての部品), Preparation of steel substrate – Surface cleanliness Assessment tests prior to coating of paints and related products

3 用語と定義
この文書の目的のために, 次の用語と定義が適用されます.

3.1 酸洗い

Treatment for removal of rust and scaling from steel substrates by acidic solutions usually containing inhibitors (3.3)

3.2 Acid lotion

A liquid mixture of etching components (organic, 無機, and/or complexing agents), inhibitors (3.3), and usually surfactants (3.4)

3.3 Inhibitors

A chemical or mixture of substances that, when added to a medium solution in a given concentration and form, reduces the rate of pickling of metals while maintaining most of the rate of pickling of metal oxides such as rust and dirt

3.4 Surfactant

A substance that can significantly alter the interfacial state of a solution system (reducing surface energy) and increase degreasing capacity

3.5 Fresh Water

Water with an electrical conductivity of less than or equal to 1 200 μS/cm (at 25°C), or water of a purity and quality sufficient to prevent the surface to be cleaned from meeting the standards for surface cleanliness or invisible contaminants specified in the procurement documents (Project Specifications)

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