kata pengantar

ISO (Organisasi Internasional untuk Standardisasi) adalah aliansi global badan standar nasional (badan anggota ISO). Pengembangan standar internasional biasanya dilakukan melalui komite teknis ISO. Setiap lembaga anggota yang tertarik pada suatu mata pelajaran yang telah dibentuk komite teknisnya berhak untuk diwakili dalam komite tersebut. Organisasi pemerintah dan non-pemerintah internasional yang bekerja sama dengan ISO juga terlibat dalam pekerjaan ini. ISO bekerja sama dengan Komisi Elektroteknik Internasional (IEC) tentang semua masalah standardisasi elektroteknik.

Prosedur yang digunakan untuk mengembangkan dokumen ini dan yang digunakan untuk pemeliharaan lebih lanjut dijelaskan di Bagian 1 dari Petunjuk ISO/IEC. Secara khusus, perhatikan standar persetujuan berbeda yang diperlukan untuk berbagai jenis dokumen ISO. This document has been drafted in accordance with the editing rules in Part 2 dari Petunjuk ISO/IEC (lihat iso.org/directives).

Harap dicatat bahwa isi tertentu dari dokumen ini mungkin memiliki hak paten. ISO tidak bertanggung jawab untuk mengidentifikasi salah satu atau semua paten tersebut. 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 (lihat 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.

Voluntary, related standards and conformity assessment related ISO specific and express the meaning of terminology as well as in relevant ISO technical barriers to trade (TBT) adhere to the principle of the world trade organization (WTO) information, please refer to the iso.org/iso/foreword.html.

This document is prepared by Technical Committee ISO/TC 35, Cat dan Pernis, Subkomite SC 12, Preparing steel substrates prior to application of paints and related products.

Daftar semua bagian dalam ISO 8504 seri dapat ditemukan di situs web ISO.

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 “Persiapan substrat baja sebelum penggunaan cat dan produk terkait – Metode perawatan permukaan – Bagian 4: Pengawetan”

memperkenalkan
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, including salt, debu, minyak dan lemak;

– Surface outline.

ISO 8501, ISO 8502 dan ISO 8503 seri memberikan metode untuk menilai faktor-faktor ini. Namun, the ISO 8504 seri ini memberikan panduan tentang metode persiapan yang dapat digunakan untuk membersihkan substrat baja, 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) Secara umum, 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 (misalnya. 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. Rekomendasi ini dapat ditemukan dalam dokumen lain seperti standar nasional dan kode praktik. ISO 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;

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 “Persiapan substrat baja sebelum penggunaan cat dan produk terkait – Metode perawatan permukaan – Bagian 4: Pengawetan”

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

2 Acuan normatif

File-file berikut direferensikan dalam teks sedemikian rupa sehingga sebagian atau seluruh konten merupakan persyaratan dokumen ini. Untuk referensi bertanggal, versi hanya kutipan berlaku. Untuk referensi tidak bertanggal, referensi versi terbaru (termasuk revisi apa pun) berlaku.

ISO 8502 (semua bagian), Preparation of steel substrate – Surface cleanliness Assessment tests prior to coating of paints and related products

3 Istilah dan Definisi
Untuk keperluan dokumen ini, istilah dan definisi berikut berlaku.

3.1 Pengawetan

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, 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)

Hanya bagian informasi standar yang bersifat publik. Untuk melihat konten selengkapnya, Anda perlu membeli standar melalui saluran resmi.