前言

国际标准化组织 (国际标准化组织) 是国家标准机构的全球联盟 (ISO成员机构). 国际标准的制定通常通过ISO技术委员会进行. 每个对已成立技术委员会的主题感兴趣的成员机构都有权在该委员会中派代表参加. 与 ISO 联络的国际政府和非政府组织也参与了这项工作. ISO 与国际电工委员会密切合作 (国际电工委员会) 关于电工标准化的所有问题.

用于开发本文件的程序以及用于进一步维护的程序在第 1 部分中进行了描述。 1 ISO/IEC 指令的. 尤其, 注意不同类型的 ISO 文件所需的不同批准标准. This document has been drafted in accordance with the editing rules in Part 2 ISO/IEC 指令的 (请参阅 iso.org/directives).

请注意，本文档的某些内容可能受专利权保护. ISO 不负责识别任何或所有此类专利. Details of any patent rights identified during the preparation of the document will be in the introduction and/or list of patent claims received by ISO (参见 iso.org/patents).

Any trade names used in this document are information provided for the convenience of the user and do not constitute an endorsement.

自主性, related standards and conformity assessment related ISO specific and express the meaning of terminology as well as in relevant ISO technical barriers to trade (技术性贸易壁垒) 坚持世界贸易组织原则 (世贸组织) 信息, please refer to the iso.org/iso/foreword.html.

This document is prepared by Technical Committee ISO/TC 35, 油漆和清漆, 小组委员会SC 12, Preparing steel substrates prior to application of paints and related products.

ISO 中所有部件的列表 8504 系列可以在 ISO 网站上找到.

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.

国际标准化组织 8504-4-222 “使用油漆和相关产品之前钢基材的准备 – 表面处理方法 – 部分 4: 酸洗”

介绍
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, 包括盐, 灰尘, 油和油脂;

– Surface outline.

国际标准化组织 8501, 国际标准化组织 8502 和ISO 8503 series provide methods for assessing these factors. 然而, 国际标准化组织 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.

A) 一般来说, equipment is fixed, but can be moved.

乙) 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. 国际标准化组织 8504 series does not contain recommendations for surface cleaning of equipment and cleaning of pipelines (例如. chemical pipelines, petroleum pipelines).

国际标准化组织 8504 series does not contain recommendations for the application of protective coating systems to steel surfaces. 国际标准化组织 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. 国际标准化组织 8504 series is used to ensure that the specified quality is:

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

乙) 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.

国际标准化组织 8504-4-222 “使用油漆和相关产品之前钢基材的准备 – 表面处理方法 – 部分 4: 酸洗”

1 范围
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. 通常, only slight oil residue can be removed during this process. It can be used on steel surfaces that are easily deformed by sandblasting.

2 规范性引用文件

文中引用下列文件，其部分或全部内容构成本文件的要求. 对于注明日期的参考文献, 仅引用版本适用. 对于未注明日期的参考文献, the latest version of the reference (包括任何修订) 适用.

国际标准化组织 8502 (所有部分), Preparation of steel substrate – Surface cleanliness Assessment tests prior to coating of paints and related products

3 术语和定义
就本文件而言, 以下术语和定义适用.

3.1 酸洗

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 (有机的, inorganic, 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)

仅标准信息部分是公开的. 查看完整内容, 需要通过官方渠道购买标准.