предговор
ИСО (Међународна организација за стандардизацију) је глобални савез националних тела за стандардизацију (Тела чланица ИСО). Развој међународних стандарда се обично спроводи преко ИСО техничких комитета. Свака институција чланица заинтересована за предмет за који је основан технички комитет има право да буде заступљена у тој комисији. Међународне владине и невладине организације које су у вези са ИСО такође су укључене у овај посао. ИСО блиско сарађује са Међународном електротехничком комисијом (ИЕЦ) о свим питањима електротехничке стандардизације.

Процедуре које се користе за израду овог документа и оне које се користе за даље одржавање описане су у Делу 1 ИСО/ИЕЦ директиве. Нарочито, обратите пажњу на различите стандарде одобрења који су потребни за различите типове ИСО докумената. Овај документ је израђен у складу са правилима уређивања у Дел 2 ИСО/ИЕЦ директиве (види исо.орг/дирецтивес).

Please note that certain contents of this document may be subject to patent rights. ИСО није одговоран за идентификацију било ког или свих таквих патената. 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 (see 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 (ТБТ) 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, Subcommittee SC 2, Organic and anodized Coatings on Aluminium.

The fourth edition cancelled and replaced the technically revised third edition (ИСО 10074:2017). Главне промене у односу на претходно издање су следеће:

– 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.

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

увести
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; Међутим, 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, unless otherwise stated. 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. If necessary, 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 μм) for wear or insulation requirements. High thickness (150μм) 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);

— Corrosion resistance (when sealed).

1 домет
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.

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

2 Normative references
The following files are referenced in the text in such a way that some or all of the content constitutes the requirements of this document. За датиране референце, citation-only versions apply. For undated references, the new version of the reference (укључујући све ревизије) примењује.

ИСО 1463, metallic and oxide coatings – Measurement of coating thickness – Microscopic method

ИСО 2106, anodizing of aluminium and its alloys — Determination of mass per unit area (surface density) of anodized coatings — Gravimetric method

ИСО 2360, Non-conductive coatings on non-magnetically conductive base metals – Measurement of coating thickness – amplitude sensitive eddy current method

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

ИСО 4516, Метални и други неоргански премази — Vickers and Knower microhardness tests

ИСО 6344-1, coated abrasives – Particle size analysis – Парт 1: particle size distribution test

ИСО 7583, anodizing of aluminium and its alloys – Terms and definitions

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

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

3 Terms and Definitions
For the purposes of this document, the terms and definitions given in ISO 7583 and the following articles apply.

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

Јаван је само одељак са стандардним информацијама. Да бисте видели цео садржај, морате купити стандард преко званичних канала.