paunang salita
ISO (International Organization para sa Standardisasyon) ay isang pandaigdigang alyansa ng mga pambansang pamantayan katawan (Mga katawan ng miyembro ng ISO). Ang pagbuo ng mga internasyonal na pamantayan ay karaniwang isinasagawa sa pamamagitan ng ISO teknikal na komite. Ang bawat institusyon ng miyembro na interesado sa isang paksa kung saan itinatag ang isang teknikal na komite ay may karapatang kumatawan sa komiteng iyon. Ang mga internasyonal na organisasyon ng pamahalaan at di pamahalaan na nakikipag ugnayan sa ISO ay kasangkot din sa gawaing ito. ISO ay gumagana nang malapit sa International Electrotechnical Commission (IEC) sa lahat ng bagay ng electrotechnical standardization.

Ang mga pamamaraan na ginamit upang bumuo ng dokumentong ito at ang mga ginagamit para sa karagdagang pagpapanatili ay inilarawan sa Bahagi 1 ng Direktiba ng ISO / IEC. Sa partikular na, tandaan ang iba't ibang mga pamantayan sa pag apruba na kinakailangan para sa iba't ibang uri ng mga dokumento ng ISO. Ang dokumentong ito ay na draft alinsunod sa mga patakaran sa pag edit sa Bahagi 2 ng Direktiba ng ISO / IEC (tingnan iso.org/directives).

Mangyaring tandaan na ang ilang mga nilalaman ng dokumentong ito ay maaaring sumailalim sa mga karapatan sa patent. Ang ISO ay hindi mananagot para sa pagtukoy ng anuman o lahat ng naturang patente. Ang mga detalye ng anumang mga karapatan sa patent na natukoy sa panahon ng paghahanda ng dokumento ay magiging sa pagpapakilala at / o listahan ng mga claim ng patent na natanggap ng ISO (tingnan iso.org/patents).

Ang anumang mga pangalan ng kalakalan na ginamit sa dokumentong ito ay impormasyong ibinigay para sa kaginhawahan ng gumagamit at hindi bumubuo ng isang endorsement.

Kusang loob, kaugnay na pamantayan at pag alinsunod pagtatasa kaugnay ISO tiyak na terminolohiya at ipahayag ang kahulugan ng at ang ISO sa mga teknikal na hadlang sa kalakalan (TBT) sumunod sa prinsipyo ng world trade organization (WTO) impormasyon, pakitingnan ang iso.org/iso/foreword.html.

This document is prepared by Technical Committee ISO/TC 35, Mga Pintura at Varnishes, Subcommittee SC 12, Preparing steel substrates prior to application of paints and related products.

Ang ikalawang edisyon ay kinansela at pinalitan ang unang edisyon (ISO 8504-3:1993), which had been technically revised.

Ang mga pangunahing pagbabago mula sa nakaraang edisyon ay ang mga sumusunod:

— Add rotary impact tools to power tool types;

— Use assessment instead of inspection in article 6.

Isang listahan ng lahat ng mga bahagi sa ISO 8504 serye ay maaaring matagpuan sa ISO website.

Anumang feedback o mga katanungan tungkol sa dokumentong ito ay dapat na idirekta sa pambansang pamantayan ng katawan ng gumagamit. Ang kumpletong listahan ng mga institusyong ito ay matatagpuan sa www.iso.org/members.html.

ISO 8504-3-318 “Paghahanda ng mga substrate ng bakal bago ang application ng mga pintura at mga kaugnay na produkto – Mga pamamaraan ng paggamot sa ibabaw – Bahagi 3: Paglilinis sa pamamagitan ng kamay at mga tool sa kapangyarihan”

ipakilala ang
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:

a) There is corrosion and mill scale;

b) The presence of surface contaminants, including salt, alikabok na, oil and grease;

c) Surface profile.

ISO 8501 at ISO 8502 are ready to provide methods for assessing these factors, while ISO 8504 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.

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

– Compatible with and applicable to the environmental conditions to which the steel will be exposed and the protective coating system to be used;

— Within the capacity of the specified cleaning procedure.

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

— ISO 8501 (all parts) : Visual assessment of surface cleanliness;

— ISO 8502 (all parts) : Surface cleanliness assessment tests;

— ISO 8504 (All Parts) : Surface treatment method

Each of these international standards is divided into separate sections.

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

This document describes how to clean hand and power tools. It should be read in conjunction with ISO 8504-1.

Hand and power tool cleaning is a surface treatment method that usually provides a lower surface cleanliness than that achieved by sandblasting. These methods in most cases require the use of multiple types of power tools when results similar to sandblasting cleaning are required, making the surface treatment complex and expensive. Langis, grease and corrosion irritants such as chlorides and sulfates are usually not removed.

Power tool cleaning usually provides a better base for primer than hand tool cleaning, resulting in better paint performance.

Both hand and power tool cleaning are suitable surface treatments. Hand tool cleaning in particular requires the use of a primer with good surface wetting ability. Power tool cleaning is appropriate when a higher quality finish grade is required, sandblasting cleaning is not allowed or is not considered feasible by interested parties.

Representative photographic examples of St 2, St 3, PSt 2, PSt 3, and PMa (tingnan ang ISO 8501-1 at ISO 8501-2) for evaluation of some new and previously coated steel surfaces cleaned using hand or power tools. Since many different situations arise during surface preparation and these photographs are not always sufficient to describe specific instances, it is recommended that special photographs of treated reference areas acceptable to all parties be made as the basis for further surface preparation procedures.

ISO 8504-3-318 “Paghahanda ng mga substrate ng bakal bago ang application ng mga pintura at mga kaugnay na produkto – Mga pamamaraan ng paggamot sa ibabaw – Bahagi 3: Paglilinis sa pamamagitan ng kamay at mga tool sa kapangyarihan”

1 saklaw
This document describes methods for cleaning steel substrates with hand and power tools prior to applying paint and related products. It is suitable for both new steel structures and previously coated steel surfaces that show areas of decomposition that require maintenance paint. It describes the equipment to use and the procedures to follow.

2 Mga reperensyang normatibo

Ang mga sumusunod na file ay tinutukoy sa teksto sa paraang ang ilan o lahat ng nilalaman ay bumubuo sa mga kinakailangan ng dokumentong ito. Para sa mga petsang sanggunian, angkop ang mga bersyon na may pagbanggit lamang. Para sa mga walang petsang sanggunian, ang pinakabagong bersyon ng sanggunian (kasama ang anumang mga rebisyon) angkop.

ISO 8501-1, Preparation of steel substrates prior to painting and related products – Visual assessment of surface cleanliness – Bahagi 1: Rust classes and preparation classes of uncoated steel substrates and steel substrates after the overall removal of prior coatings

ISO 8501-2, Preparation of steel substrates prior to painting and related products – Visual assessment of surface cleanliness – Bahagi 2: Preparation grade of previously coated steel substrates after local removal of prior coatings

3 Mga Tuntunin at Kahulugan
Para sa mga layunin ng dokumentong ito, Ang mga sumusunod na termino at kahulugan ay nalalapat.

3.1 Cleaning Hand Tools

A method of preparing steel substrates using hand tools without power assistance

Tala 1: chipping mallet, hand scraper, hand wire brush, sandpaper, and plastic wool embedded with abrasive are usually used. Sometimes hand tool cleaning is done initially to remove relatively loose contaminants before using power tools.

3.2 Clean Power Tools

A method for preparing steel substrate using a power-assisted hand tool, but excluding shot blasting cleaning

Tala 1: Rotary descaler, rotary wire brush, rotary impact tool, sander, sander, rotary abrasive coated paper wheel (turning wheel), abrasive grinder, plastic wool with embedded abrasive, chipping hammer and needle gun, driven by electric or pneumatic, or connected to remote or robotic equipment, are examples of equipment commonly used.

3.3 Water, solvent or chemical cleaning

Method of removing visible oil, mantika, dirt or processing lubricants and other soluble contaminants from steel surfaces

Tala 1: For more details and cleaning methods, tingnan ang ISO 12944-4:2017, 6.2.

3.4 Contaminated surfaces

A surface with substances that are harmful to the performance of the protective coating system

Tala 1: Typical contaminants include slag, rust, laminate rust, mill scale, oil, mantika, flux and weld spatter, soluble iron corrosion products, and other soluble salts, including chloride and sulfate.

3.5 Cleaning Surfaces

A surface where contaminants have been removed to a specified or agreed surface cleanliness level

Tala 1 Full details are provided in ISO 8501-1 at ISO 8501-2.

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