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 was prepared by Technical Committee ISO/TC 79, Light Metals and their Alloys, Subkomite SC 2, Organic and anodized Coatings on Aluminium.

The fourth edition cancelled and replaced the technically revised third edition (ISO 10074:2017). Perubahan utama dari edisi sebelumnya adalah sebagai berikut:

– The pre-test wear test number has been added to the grinding wheel wear test as a requirement.

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 10074-2021 Specification for hard anodized Coatings on aluminium and its alloys

memperkenalkan
Hard anodizing is an electrolytic treatment that forms a hard, often thick coating of alumina, used primarily for engineering purposes.

Hard anodizing can be applied to cast or forged aluminum and aluminum alloys; Namun, alloys and die-cast alloys containing more than 5% copper and/or 8% silicon require special anodizing procedures. In order to obtain better microhardness, wear resistance or low surface roughness characteristics, select low content alloys.

Articles shall be anodized after all heat treatment, machining, welding, molding and punching operations, kecuali dinyatakan lain. Better results on machined surfaces. Sharp edges are machined to a radius of at least 10 times the intended thickness to avoid “burning” and/or flaking.

Hard anodizing usually results in an increase in the size of each surface, equivalent to about 50% of the coating thickness. Jika diperlukan, the size of the assembly before anodizing will allow this to be done.

The thickness is usually in the range of 25μm to 150μm. Low thickness (up to 25μm) is sometimes used in a variety of applications, such as splines and threads. Normal thickness (50 μm to 80 m) for wear or insulation requirements. High thickness (150m) is used for repair purposes, but thick coatings tend to be softer in the outer areas. Very hard coatings reduce fatigue strength. This phenomenon can be minimized by reducing thickness and/or sealing by performing shot peening prior to hard anodizing (see H.6). Hard anodizing tends to increase surface roughness. This can be limited by low alloy content and/or mechanical finishing.

Hard anodized coatings are mainly used to obtain the following:

— wear resistance or erosion;

— electrical insulation;

– Heat insulation;

– stacking (repairing parts that exceed machining tolerances or wear parts);

— Tahan korosi (when sealed).

1 jangkauan
This document specifies requirements for hard anodized coatings on aluminium and its alloys, including test methods.

It also specifies the information to be provided by the customer to the anodizer (see Annex A).

It is not suitable for coatings produced by plasma electrolytic oxidation, micro-arc oxidation, plasma chemical anodizing, anode spark deposition or spark anodizing processes.

ISO 10074-2021 Specification for hard anodized Coatings on aluminium and its alloys

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 baru (termasuk revisi apa pun) berlaku.

ISO 1463, metallic and oxide coatings – Pengukuran ketebalan lapisan – Microscopic method

ISO 2106, anodizing of aluminium and its alloys — Determination of mass per unit area (surface density) of anodized coatings — Metode gravimetri

ISO 2360, Non-conductive coatings on non-magnetically conductive base metals – Pengukuran ketebalan lapisan – amplitude sensitive eddy current method

ISO 2376, anodizing of aluminium and its alloys — determination of breakdown voltage and voltage resistance

ISO 4516, Pelapis logam dan anorganik lainnya — Vickers and Knower microhardness tests

ISO 6344-1, coated abrasives – Particle size analysis – Bagian 1: particle size distribution test

ISO 7583, anodizing of aluminium and its alloys – Istilah dan definisi

ISO 8251, Anodizing of aluminium and its alloys – Measurement of the wear resistance of anodized coatings

ISO 9227, Corrosion testing in artificial atmospheres – salt spray testing

3 Istilah dan Definisi
Untuk keperluan dokumen ini, istilah dan definisi yang diberikan dalam ISO 7583 dan artikel berikut ini berlaku.

3.1 A Lot

Work together on items of the same nominal composition and temper

3.2 Batch acceptance test

Test production lot (3.1) to determine compliance with specified requirements

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