BS EN 4704-2012 Aerospace series Tartaric-Sulphuric-Acid anodizing of aluminium and aluminium wrought alloys for corrosion protection and paint pre-treatment (TSA)《航空航天系列 用于防腐和涂料预处.pdf
《BS EN 4704-2012 Aerospace series Tartaric-Sulphuric-Acid anodizing of aluminium and aluminium wrought alloys for corrosion protection and paint pre-treatment (TSA)《航空航天系列 用于防腐和涂料预处.pdf》由会员分享,可在线阅读,更多相关《BS EN 4704-2012 Aerospace series Tartaric-Sulphuric-Acid anodizing of aluminium and aluminium wrought alloys for corrosion protection and paint pre-treatment (TSA)《航空航天系列 用于防腐和涂料预处.pdf(18页珍藏版)》请在麦多课文档分享上搜索。
1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 4704:2012Aerospace series T a r t a r i c - S u l p h u r i c - A c i d anodizing of aluminium and aluminium wrought alloys for corrosion protection and paint pretreatment
2、(TSA)BS EN 4704:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 4704:2012. The UK participation in its preparation was entrusted to TechnicalCommittee ACE/65, Non-metallic materials for aerospace purposes. A list of organizations represented on this committ
3、ee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 76587 2 ICS 49.040 Co
4、mpliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 February 2012.Amendments issued since publicationDate T e x t a f f e c t e dBS EN 4704:2012EUROPEAN STANDARD NO
5、RME EUROPENNE EUROPISCHE NORM EN 4704 February 2012 ICS 49.040 English Version Aerospace series - Tartaric-Sulphuric-Acid anodizing of aluminium and aluminium wrought alloys for corrosion protection and paint pre-treatment (TSA) Srie arospatiale - Anodisation tartrique de laluminium et des alliages
6、daluminium corroys pour protection contre la corrosion et peinture (TSA) Luft- und Raumfahrt - Weinsure-Schwefelsure-Anodisieren (TSA) von Aluminium und Aluminium-Knetlegierungen fr den Korrosionsschutz und zur Vorbehandlung This European Standard was approved by CEN on 23 December 2011. CEN members
7、 are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application
8、to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
9、 Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
10、 Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation
11、 in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4704:2012: EBS EN 4704:2012EN 4704:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 55 Requirements .66 Re-anodizing . 107 Qualification Test Report (QTR) 1
12、1Annex A (informative) Whler curves and stress levels Reference fatigue curves . 12Bibliography . 13BS EN 4704:2012EN 4704:2012 (E) 3 Foreword This document (EN 4704:2012) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries an
13、d votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standa
14、rd, either by publication of an identical text or by endorsement, at the latest by August 2012, and conflicting national standards shall be withdrawn at the latest by August 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CE
15、N and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus,
16、 Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 4704:2012EN 4704:2012 (E)
17、4 1 Scope This European Standard defines the requirement for Tartaric-Sulphuric-Acid (TSA) anodizing of aluminium and wrought alloys for corrosion protection and paint pre-treatment. The purpose of this European Standard is to give design and quality requirements to manufactures. 2 Normative referen
18、ces The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN
19、2101, Aerospace series Chromic acid anodizing of aluminium and wrought aluminium alloys EN 3665, Aerospace series Test methods for paints and varnishes Filiform corrosion resistance test on aluminium alloys EN 6072, Aerospace series Metallic materials Test methods Constant amplitude fatique testing
20、EN ISO 2106, Anodizing of aluminium and its alloys Determination of mass per unit area (surface density) of anodic oxidation coatings Gravimetric method (ISO 2106:2011) EN ISO 2409, Paints and varnishes Cross-cut test (ISO 2409) EN ISO 9227 Corrosion tests in artificial atmospheres Salt spray tests
21、(ISO 9227) EN ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling (ISO 15528) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 de-anodizing process, which removes the anodic oxide 3.2 smut precipitations of alloyin
22、g elements (e. g. Cu, Fe, Zn, Si) on the surface of parts after a process step normally after alkaline etching step BS EN 4704:2012EN 4704:2012 (E) 5 3.3 Mechanically Disturbed Layer MDL layer that is present at the surface resulting from the rolling process of the material 3.4 pit surface corrosion
23、 defect at which the anodic coating is penetrated 3.5 process instruction document that describes the detailed process, parameters, detailed steps, etc. 3.6 alloys all aluminium alloys, that are treated with the TSA process in the specific shop 3.7 re-anodizing repetition of the anodizing process st
24、ep after complete de-anodizing 3.8 sealing sealing (of the anodized layers) is applied to close the pores produced by the acid anodizing process. It is usually applied in demineralized water bath. Sealing can improve the corrosion resistance performance of the anodic film. 3.9 dichromate sealing the
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