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1、BRITISH STANDARD AEROSPACE SERIES BS EN 2082-3:1991 Specification for Aluminium alloy forging stock and forgings Technical specification Part 3: Pre-production and production forgings This European Standard EN 2082-3:1989 has the status of a British Standard. Licensed Copy: sheffieldun sheffieldun,
2、na, Fri Nov 03 01:13:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2082-3:1991 This British Standard was published under the authority of the Board of BSI and comes into effect on 31 January 1991 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference
3、ACE/61 Draft for comment 88/75600 DC ISBN 0 580 19159 1 Cooperating organizations The European Committee for Standardization, under whose supervision this European Standard was prepared, comprises the national standards organizations of the following Western European countries. AustriaOesterreichisc
4、hes Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organization for Standardization IcelandTechnological Institute
5、of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxemburgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus da Qualidade SpainAsociacin Espaola de Norma
6、lizacin y Certificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:13:33 GMT+00:00 2
7、006, Uncontrolled Copy, (c) BSI BS EN 2082-3:1991 BSI 12-1999i Contents Page Committees responsibleInside front cover National forewordii Brief history2 Text of EN 2082-33 National appendix AInside back cover National appendix BInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03
8、 01:13:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2082-3:1991 ii BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee and is the English language version of EN 2082 “Aerospace series. Aluminium alloy forging st
9、ock and forgings. Technical specification” Part 3 “Pre-production and production forgings”, published by the European Committee for Standardization (CEN). EN 2082-3 was produced as a result of international discussion in which the UK took an active part. A British Standard does not purport to includ
10、e all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i
11、 and ii, the EN title page, pages 2 to 6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov
12、03 01:13:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2082-3 November 1989 UDC 669.715-4:621.73.04:629.7 Key words: Aircraft industry, forgings, die forgings, aluminium alloys, detail specifications, production control, marking English version Ae
13、rospace series Aluminium alloy forging stock and forgings Technical specification Part 3: Pre-production and production forgings Srie arospatiale Produits destins la forge, pices forges et pices matrices en alliages daluminium Spcification technique Partie 3: Pices types et pices de srie Luft- und R
14、aumfahrt Schmiedevormaterial und Schmiedestcke aus Aluminiumlegierungen Technische Lieferbedingungen Teil 3: Ausfallmuster- und Serienschmiedestcke This European Standard was accepted by CEN on 1988-11-03. CEN members are bound to comply with the requirements of CEN Internal Regulations which stipul
15、ate 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 to the CEN Central Secretariat or to any CEN member. This European Standard
16、 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 CEN Central Secretariat has the same status as the official versions. CEN members are the national standard
17、s organizations of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung C
18、entral Secretariat: rue de Stassart 36, B-1050 Brussels CEN 1989 Copyright reserved to all CEN members Ref. No. EN 2082-3:1989 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:13:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2082-3:1989 BSI 12-1999 2 Brief history This European Standar
19、d has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this Standard has successively received the approval of the National Associations and the Official Services of the member countr
20、ies of AECMA, prior to its presentation to CEN. According to the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Swe
21、den, Switzerland and United Kingdom. Contents Page Brief history2 1Scope and field of application3 2References3 3Pre-production forgings3 4Manufacture of production forgings3 5Inspection and testing of production forgings4 6Marking5 Table 4 Summary of requirements for production forgings6 Licensed C
22、opy: sheffieldun sheffieldun, na, Fri Nov 03 01:13:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2082-3:1989 BSI 12-19993 1 Scope and field of application This standard specifies the particular requirements for aluminium alloy pre-production and production forgings produced from forging stock com
23、plying with EN 2082-2. It shall be used in conjunction with EN 2082-1. 2 References EN 2002-1, Aerospace series Test methods for metallic materials Part 1: Tensile testing at ambient temperature1). EN 2002-7, Aerospace series Test methods for metallic materials Part 7: Hardness tests1). EN 2002-16,
24、Aerospace series Test methods for metallic materials Part 16: Dye penetrant testing1). EN 2002-22, Aerospace series Test methods for metallic materials Part 22: Plane strain fracture toughness test1). EN 2002-23, Aerospace series Test methods for metallic materials Part 23: Sharp-notch tension testi
25、ng1). EN 2004-1, Aerospace series Test methods for aluminium and aluminium alloy products Part 1: Determination of electrical conductivity of wrought aluminium alloys1). EN 2004-2, Test methods for aluminium and aluminium alloy products Part 2: Ultrasonic testing of plates, forgings and extrusions A
26、erospace series. EN 2004-4, Aerospace series Test methods for aluminium and aluminium alloy products Part 4: Stress corrosion cracking test. EN 2082-1, Aerospace series Aluminium alloy forging stock and forgings Technical specification Part 1: General requirements. EN 2082-2, Aerospace series Alumin
27、ium alloy forging stock and forgings Technical specification Part 2: Forging stock. EN 2101, Aerospace series Chromic acid anodizing of aluminium and wrought aluminium alloys. 3 Pre-production forgings 3.1 General 3.1.1 The following requirements shall be specified in the order, drawing and/or inspe
28、ction schedule in addition to those specified by EN 2082-1. Number of forgings, Who shall perform the examination, Heat treatment condition of these forgings, Type and number of tests and inspections necessary to evaluate and qualify the manufacturing process (dimensions, mechanical and metallurgica
29、l properties, etc .). 3.1.2 The inspection and testing on pre-production forgings shall be carried out and the inspection and test conditions shall be recorded to allow the definition of the optimum techniques to be used for production forgings, including, where appropriate, the ultrasonic test meth
30、od (probe, frequency, angle of incidence .). 3.1.3 The inspection and tests carried out on pre-production forgings shall include those which will be carried out on production forgings. 3.2 Inspection report In addition to the information required by EN 2082-1, the inspection and test report on the p
31、re-production forgings shall provide all technical information to evaluate the quality of these parts, e.g. photographs taken during macro- and microscopic examination, results of dimensional measurements . 3.3 Acceptance of pre-production forgings When all inspection and test results relative to pr
32、e-production forgings have been reported and considered as satisfactory by the manufacturer and the purchaser, the purchaser shall give his written agreement or order for series production. The inspection schedule and if required the manufacturing schedule shall be agreed between the manufacturer an
33、d the purchaser. 4 Manufacture of production forgings 4.1 At the start of production (particularly at the start of series production), the manufacturing schedule may be completed to allow the manufacturer to guarantee the reproducibility of the product with more certainty. All information, no matter
34、 how minor, shall be recorded in the manufacturing schedule. 4.2 When a manufacturing schedule has been agreed, no change in manufacturing method shall be made without the written approval of the purchaser. When changes are necessary, the purchaser shall decide if new pre-production forgings shall b
35、e manufactured and tested. The manufacturing schedule and the inspection schedule shall be modified if necessary. 1) In preparation Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:13:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2082-3:1989 4 BSI 12-1999 4.3 Any change of the forging re
36、quiring a revised drawing may require at the purchasers or manufacturers request: Manufacturing of new pre-production forgings, or Modification of the manufacturing schedule and/or the inspection schedule. 4.4 Manufacturing schedules and inspection schedules, which are modified during production sha
37、ll be subjected to the same approval process as the original documents. 4.5 Straightening operations in the fully heat treated condition shall be the subject of an agreement between the manufacturer and the purchaser and stated in the manufacturing schedule. 5 Inspection and testing of production fo
38、rgings Inspection and testing shall be carried out on production forgings under the same conditions as applied to pre-production forgings. 5.1 Non destructive tests 5.1.1 External defects A visual examination shall be carried out on all surfaces of each forging after: Etching, or Etching and chromic
39、 acid anodizing followed by coldwater rinse conforming with EN 2101, or Etching and penetrant flaw detection in conformity with EN 2002-16. The test method shall be indicated in the order or the inspection schedule. The surface of forgings shall be free from harmful defects, such as cracks, laps, et
40、c. Local dressing may be carried out by the manufacturer provided the dimensions of the product remain within the tolerance limits. 5.1.2 Internal defects When required by the drawing or the inspection schedule, the forgings shall be submitted to an ultrasonic inspection in accordance with EN 2004-2
41、 and the method defined during evaluation of the pre-production forgings. The areas to be inspected shall be defined by the drawing or the inspection schedule. Unless otherwise stated by the purchaser, the acceptance conditions shall be those of class A as defined by EN 2004-2. Where the shape does
42、not permit inspection at the final stage of fabrication, it may be carried out at an earlier stage by agreement between manufacturer and purchaser. The test frequency is given in the table. 5.1.3 Batch uniformity Unless otherwise specified by the purchaser the batch uniformity of forgings supplied i
43、n the T. 2) condition shall be ensured by one of the three following methods a, b1 or b2 to demonstrate that the material has been properly heat treated and that the batch is uniform. The measurements shall be carried out at the locations indicated by the drawing or inspection schedule. Method “a” f
44、or 7. 2) series alloys in T 7. 2) tempers Method “b” for other alloys or tempers The choice between b1 and b2 shall be at the discretion of the manufacturer. b1: Electrical conductivity measurement on each forging, and 10 % of them including the forgings having the lowest and highest conductivity, s
45、hall be hardness tested or, b2: Hardness testing on each forging, and 10 % of them including the forgings having the lowest and highest hardness, shall be conductivity tested. 5.1.3.1 Electrical conductivity measurement The conductivity measurement shall be carried out in accordance with EN 2004-1.
46、The values obtained shall conform to the requirements of the material standards and the maximum variations shall be as follows: 1,5 MS/m per forging, 2 MS/m per batch. If no values are stated in the material standard, the electrical conductivity shall demonstrate that the material has been properly
47、heat treated and the above mentioned maximum variations shall apply. 5.1.3.2 Hardness testing Hardness shall be determined in conformance with EN 2002-7 and the recorded values shall meet the requirements of the material standards. 5.1.4 Dimensions and tolerances The dimensions and tolerances shall
48、conform with the drawing or the inspection schedule. 2) “Aluminium Association” designations Electrical conductivity measurement and hardness testing on each forging. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:13:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2082-3:1989 BSI 12-1999
49、5 The dimensions specially indicated by the purchaser shall be checked on every forging. For other dimensions the frequency of examination adopted by the manufacturer shall be sufficient to permit him to certify compliance with the requirements. 5.2 Tensile test The nature (cut-up, forged separately or integrally forged test samples), the quantity and the locations of the test pieces shall conform with the drawing and/or the inspection schedule. The test shall be conduct