1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 4050-4:2012Aerospace series T e s t m e t h o d f o r m e t a l l i c materials Ultrasonic inspection of bars, plates, forging stock and forgingsPart 4: Acceptance criteria
2、BS EN 4050-4:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 4050-4:2012. The UK participation in its preparation was entrusted to TechnicalCommittee ACE/61, Metallic materials for aerospace purposes. A list of organizations represented on this committee ca
3、n 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 2012. Published by BSI Standards Limited 2012.ISBN 978 0 580 75196 7 ICS 49.025.05;
4、49.025.15 Compliance 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 31 October 2012.Amendments issued since publicationDate T e x t a f f e c t e dBS EN 4050-4:2012EUROPEA
5、N STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4050-4 September 2012 ICS 49.025.05; 49.025.15 English Version Aerospace series - Test method for metallic materials - Ultrasonic inspection of bars, plates, forging stock and forgings -Part 4: Acceptance criteria Srie arospatiale - Mthode dessai applica
6、ble aux matriaux mtalliques - Linspection par ultrasons des barres, des assiettes, des stocks de forgeage et de pices forges - Partie 4: Critres dacceptation Luft- und Raumfahrt - Prfverfahren fr metallische Werkstoffe - Ultraschallprfung von Stangen, Platten, Schmiedevormaterial und Schmiedestcken
7、- Teil 4: Abnahmekriterien This European Standard was approved by CEN on 15 July 2011. CEN members 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
8、 and bibliographical references concerning such national standards may be obtained on application 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 t
9、he responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management 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, Former Yugo
10、slav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN
11、 DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4050-4:2012: EBS EN 4050-4:2012EN 4050-4:2012 (E) 2 Contents Page Foreword 3
12、1 Scope 42 Normative references 43 Acceptance criteria 44 Choice of technique.5BS EN 4050-4:2012EN 4050-4:2012 (E) 3 Foreword This document (EN 4050-4:2012) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried
13、 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 standard, either by p
14、ublication of an identical text or by endorsement, at the latest by March 2013, and conflicting national standards shall be withdrawn at the latest by March 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC
15、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, Czech Republic,
16、Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, 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 4050
17、-4:2012EN 4050-4:2012 (E) 4 1 Scope This European Standard specifies the acceptance criteria for products ultrasonically inspected in accordance with EN 4050-1. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for
18、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 4050-1, Aerospace series Test method for metallic materials Ultrasonic inspection of billets, bars, plates and forging s
19、tock and forgings, Part 1: General requirements 3 Acceptance criteria The acceptance criteria, class 1 to 7, are given in Table 1. Table 1 Acceptance criteria Class Maximum single discontinuity, non linear1)Maximum multiple discontinuities2)Single discontinuity linear1) FBH mm FBH mm mm Response Len
20、gth 7 0,6 0,4 Not applicable6 0,8 0,6 0,4 6 5 1,2 0,8 0,8 12,5 4 1,6 1,2 1,2 12,53 2,0 1,2 1,2 25 2 3,2 2,0 2,0 251 5,0 3,2 3,2 50 1)Spacing between indications larger than or equal to 25 mm (defect spacing horizontal and vertical to beam direction). 2)Spacing between indications less than 25 mm (de
21、fect spacing horizontal and vertical to beam direction). The FBH reference value for multiple discontinuities shall be set for the corresponding class in each case. Reject within each particular class: a) Ultrasonic indications shall be not greater than the value given in Table 1 within the correspo
22、nding class. b) Loss in back wall echo shall be not greater than the value in dB/mm, or % screen height agreed between the manufacturer and purchaser. c) Noise levels shall be not greater than the monitor threshold level. BS EN 4050-4:2012EN 4050-4:2012 (E) 5 4 Choice of technique Classes 1, 2, 3, 4
23、, 5 and 6 shall be inspected using either immersion, mechanized contact or manual contact inspection. Classes 5 to 6 shall preferably be inspected by either immersion or mechanized contact. Within class 7, the inspection of sheets and bar for forging or machining shall be carried out using either im
24、mersion or mechanized contact. The forged parts shall be inspected using the immersion technique. This page deliberately left blankThis page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publications, information a
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