介绍
国际标准化组织 (国际标准化组织) 是一个由国家标准机构组成的全球联盟 (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团体都有权在委员会中派代表参加. 国际组织, 与ISO有联系的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) 关于电气标准化的所有问题.

部分 1 ISO/IEC 指令的描述了用于制定本文件和进一步维护的程序. 尤其, 应注意不同类型ISO文件所需的不同批准标准. 本文件根据 ISO/IEC 指令部分的编辑规则起草 2 (请参阅 iso.org/directives).

请注意，本文档的某些内容可能是专利权的主题. ISO 不负责识别任何或所有此类专利. Details of any patent rights identified during the development of the document will be found in the introduction and/or list of ISO Patent declarations received (参见 iso.org/patents).

本文档中使用的任何商品名称均作为信息提供，以方便用户，并不构成认可.

国际标准化组织 8502-6-2019 钢基材涂漆前的准备及相关产品 – 表面清洁度评估测试 – 部分 6: 提取水溶性污染物进行分析 (布雷勒法)

自愿性相关标准说明, ISO specific terms related to conformity assessment and the expression of meaning, and the ISO in the 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 see the iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 35, 油漆和清漆, 分委会SC 12, Preparation of Steel substrates before the application of paints and related products. In accordance with the Technical Cooperation Agreement between ISO and CEN (维也纳协定), cooperation with the Technical Committee of the European Committee for Standardization (欧洲标准化委员会), 欧洲标准化委员会/TC 139, 油漆和清漆.

第三版取消并取代第二版 (国际标准化组织 8502-6:2006), 已进行技术修订.

The main changes compared with the previous edition are as follows:

– Includes a telescopic extraction unit for water extraction;

– The specification uses only water as the solvent for this method.

ISO 中所有部件的列表 8502 系列可以在 ISO 网站上找到.

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.

国际标准化组织 8502-6-2019 钢基材涂漆前的准备及相关产品 – 表面清洁度评估测试 – 部分 6: 提取水溶性污染物进行分析 (布雷勒法)

介绍
The performance of protective coatings applied to steel paints and related products is significantly affected by the state of the steel surface prior to coating. The main factors known to affect this performance are:

A) The presence of rust and oxide;

乙) 表面污染物的存在, 包括盐, 灰尘, 油和油脂;

C) 表面轮廓.

国际标准化组织 8501 series, 国际标准化组织 8502 series, 和ISO 8503 series are ready to provide methods for assessing these factors, 而ISO 8504 series provides guidelines for preparation methods that can be used to clean steel substrates, indicating the cleanliness of each method’s ability to achieve a specified level.

These international standard series do not contain recommendations for protective coating systems for steel surfaces. 它们也不包含针对特定情况的表面质量要求的建议, 尽管表面质量可以直接影响要应用的保护涂层的选择及其性能. 此类建议可以在其他文档中找到, 例如国家标准和行为规范. Users of these international standards should ensure that the required quality is:

国际标准化组织 8502-6-2019 钢基材涂漆前的准备及相关产品 – 表面清洁度评估测试 – 部分 6: 提取水溶性污染物进行分析 (布雷勒法)

– 与钢材所暴露的环境条件以及所使用的保护涂层系统兼容并合适;

– 在规定的清洁程序的能力范围内.

The above four series of international standards cover the following aspects of steel substrate preparation:

国际标准化组织 8501 covers visual assessment of surface cleanliness;

– 国际标准化组织 8502 covers surface cleanliness assessment tests;

– 国际标准化组织 8503 covers the surface roughness characteristics of sandblasted steel substrates;

国际标准化组织 8504 covers surface treatment methods.

国际标准化组织 8502-6-2019 钢基材涂漆前的准备及相关产品 – 表面清洁度评估测试 – 部分 6: 提取水溶性污染物进行分析 (布雷勒法)

This document is one of many parts of ISO 8502 that specify tests to be used to assess surface cleanliness. For such tests, there are several ways to extract and analyze soluble contaminants on the surface to be painted. One of these methods is based on wipes of relatively large test surfaces. This technique provides an average of the pollutants present, but it may hide local concentrations of pollutants. 此外, wipes may not ensure sufficient penetration to dissolve all deep contaminants, such as ferrite.

然而, there are other methods that use small cells as liquids used to remove and collect surface contaminants. The cells attach to test surfaces where soluble contaminants may be present, such as where pitting occurs, and prevent evaporation loss of the extraction solution. This closed-cell technique often provides more accurate contaminant point values.

The paper describes a simple, inexpensive field test using a flexible battery designed to be in the form of a bonded battery filled with water. The method was originally developed by Swedish scientist A. Bresle beau ± ± using one of the cell types included in this document.

国际标准化组织 8502-6-2019 钢基材涂漆前的准备及相关产品 – 表面清洁度评估测试 – 部分 6: 提取水溶性污染物进行分析 (布雷勒法)

1 适用范围

This document details a method for extracting water-soluble contaminants from surfaces by using a flexible battery in the form of a patch or sleeve that can be affixed to any surface regardless of its shape (flat or curved) and orientation (facing in any direction, including downward).

The method described is suitable for field use to determine the presence of water-soluble contaminants prior to painting or similar treatment.

This document does not include a follow-up analysis of dissolved contaminants. Analytical methods suitable for field use are described in other parts of ISO 8502.

笔记: Extraction methods may produce false negatives or fail to remove all water soluble substances from the surface for the following reasons: A) soluble substances are hidden in crevices or under metal folds; 乙) Corrosion layer, passivation layer produced by corrosion inhibitor, 油, grease or other soluble material under invisible film.

2 规范性引用文件
当文中引用下列文件时, 其中部分或全部构成本文件的要求. 对于注明日期的参考文献, 仅引用的版本适用. 对于未注明日期的引文, 参考文档的新版本 (包括任何修订) 适用.

国际标准化组织 554, Standard Atmospheric specification for conditioning and/or testing

国际标准化组织 3696, 分析实验室用水 – 规格及测试方法

国际标准化组织 8501-1, 钢基材涂装前的准备及相关产品 – 表面清洁度的目视评估 – 部分 1: Grade of corrosion and readiness of uncoated steel substrates and of steel substrates after removal of previous coatings in their entirety

国际标准化组织 8502-6-2019 钢基材涂漆前的准备及相关产品 – 表面清洁度评估测试 – 部分 6: 提取水溶性污染物进行分析 (布雷勒法)

国际标准化组织 8502-9, 钢基材涂装前的准备及相关产品 – 表面清洁度评估测试 – 部分 9: Field method for determination of conductivity of water-soluble salts

国际标准化组织 8503-2, 钢基材涂装前的准备及相关产品 – Surface roughness characteristics of sandblasted steel substrates – 部分 2: Method for grading the surface profiles of abrasive sandblasted steel – Comparison procedure

3 术语和定义
本文档中未列出任何术语和定义.

ISO 和 IEC 在以下地址维护标准化术语数据库:

– ISO在线浏览平台: iso.org/obp

– IEC 百科全书: 可以在 electropedia.org 上找到

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.