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.

第三版取消并取代了经过技术修订的第二版 (国际标准化组织 8504-2:2000). The main changes from the previous edition are as follows:

— Updating Article 2, normative reference;

— Edit and revise.

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 8504-2-219 “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 2: 喷砂清洗”

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 are

— the presence of rust and dirt,

— The presence of surface contaminants, 包括盐, 灰尘, 油和油脂, 和

– 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, 而ISO 8504 series provides requirements and guidance for preparation methods that can be used to clean steel substrates, indicating the ability of each method to achieve specified levels of cleanliness.

国际标准化组织 8504 series is suitable for new and corroded steel surfaces as well as uncoated or previously coated steel surfaces with paints and related products.

These international standards do not contain provisions for protective coating systems applied to steel surfaces. They do not contain provisions for surface quality requirements specific to specific cases, even though surface quality can directly influence the choice of protective coating to be applied and its properties. These provisions are found in other documents such as national standards and codes of practice. Users of these international standards should ensure the prescribed quality

– Compatible with and applicable to the environmental conditions to which the steel is to be exposed and the protective coating system to be used, 和

— Within the capacity of the specified cleaning procedure.

The main purpose of the finish is to ensure the removal of harmful substances and to obtain a surface that allows the primer to have satisfactory adhesion to the steel. It is also designed to help reduce the amount of contaminants that cause corrosion.

Sand blasting cleaning is the most effective method of mechanical surface treatment. It is widely used because this surface treatment method has many of the versatile functions listed below.

– This method allows for high productivity.

The device can be fixed or mobile and adapted to the object to be cleaned.

This method is suitable for most types and forms of steel surfaces.

Many different surface states can be produced, such as different preparation grades and surface profiles.

– Can produce cleaning, shot peening, coarsening, smooth grinding and other effects.

– Selective removal of some failed coatings, leaving sound coatings intact.

— Abrasive bounce (rebound) cleans otherwise inaccessible areas.

1 范围
This document specifies the method of sandblasting cleaning the surface of the steel before painting and related products are applied. It provides information about the effectiveness of each method and its application area. It describes the equipment to use and the procedures to follow.

Note that these methods are mainly used for hot rolled steel to remove scale, rust, ETC。, but can also be used for cold rolled steel of sufficient thickness to withstand deformation caused by abrasive impact.

国际标准化组织 8504-2-219 “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 2: 喷砂清洗”

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 4628-3, 油漆和清漆 – 涂层降解评估 – Designation of intensity of uniform change in the number and size of defects and appearance – 部分 3: Assessment of degree of rusting

国际标准化组织 8501 (所有部分), Preparation of steel substrates prior to painting and related products — visual assessment of surface cleanliness

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

国际标准化组织 8503 (所有部分), Preparation of Steel substrate prior to application of paint and related products – sandblasting clean the surface roughness characteristics of steel substrate

国际标准化组织 11124 (所有部分), Specification for Preparation of Steel Substrate – Metal Sandblasting cleaning abrasives prior to application of paint and related products

国际标准化组织 11126 (所有部分), Preparation of Steel Substrates prior to application of paints and related products-Specification for Non-metallic abrasive blasting for cleaning

3 术语和定义
就本文件而言, 以下术语和定义适用.

3.1 Sand blasting cleaning

The high kinetic energy abrasive flow is impounded onto the surface to be prepared

3.2 Sand blast cleaning abrasives

Solid materials for sandblasting cleaning (3.1)

3.3 Shooting

A predominantly circular grain, less than twice the maximum grain width, and free of edges, broken surfaces, or other sharp surface defects

3.4 碎石

The main angular, surface fracture, sharp edge, shape less than semicircle particles

3.5 Cylinder

A sharp-edged particle with a diameter to length ratio of 1:1 and cut so that its face is approximately at right angles to its center line

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