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1、BRITISH STANDARD BS EN 10234:1994 Metallic materials Tube Drift expanding test The European Standard EN 10234:1993 has the status of a British Standard UDC 669-462:620.163.22 BS EN 10234:1994 This British Standard, having been prepared under the direction of the Iron and Steel and the Non-ferrous Me
2、tals Standards Policy Committees, was published under the authority of the Standards Board and comes into effect on 15 May 1994 BSI 04-1999 The following BSI references relate to the work on this standard: Committee reference ISM/NFM/4 Draft announced in BSI News April 1991 ISBN 0 580 22890 8 Cooper
3、ating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk
4、Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organization for Standardization IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazio
5、nale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus da Qualidade SpainAsociacin Espaola de Normalizacin y Certificacin SwedenStandardiseringskommissionen i Sverige Swit
6、zerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments BS EN 10234:1994 BSI 04-1999i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN 102343 National annex NA
7、 (informative) Committees responsible Inside back cover BS EN 10234:1994 ii BSI 04-1999 National foreword This British Standard has been prepared under the direction of the Iron and Steel and the Non-ferrous Metals Standards Policy Committees and is the English language version of EN 10234:1993 Meta
8、llic materials Tube Drift expanding test, published by the European Committee for Standardization (CEN). No British Standard is superseded. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct applicat
9、ion. 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 and ii, the EN title page, pages 2 to 4, an inside back cover and a back cover. This standard has been updated (se
10、e copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10234 October 1993 UDC 669-462:620.163.22 Descriptors: Metal tubes, mechanical tests, drift expanding tests Englis
11、h version Metallic materials Tube Drift expanding test Matriaux mtalliques Tubes Essai dvasement Metallische Werkstoffe Rohr Aufweitversuch This European Standard was approved by CEN on 1993-10-25. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditio
12、ns 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 Central Secretariat or to any CEN member. This European Standard exists in three off
13、icial 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria,
14、 Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de
15、 Stassart 36, B-1050 Brussels 1993 Copyright reserved to CEN members Ref. No. EN 10234:1993 E EN 10234:1993 2 BSI 04-1999 Foreword This European Standard has been prepared by sub-committee ECISS/TC 29, the Secretariat of which has been allocated to the United Kingdom (BSI). No meeting of the sub-com
16、mittee has been held but the following countries voted positively by the PQ-procedure on the acceptability of the reference document as a European Standard: Belgium, Denmark, Finland, France, Germany, Greece, Italy, Netherlands, Norway, Spain, Sweden, Switzerland and the United Kingdom. No country v
17、oted negatively. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 1994, and conflicting national standards shall be withdrawn at the latest by April 1994. In accordance with the CEN/CENELEC I
18、nternal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Foreword2 Introduc
19、tion3 1Scope3 2 Normative reference3 3Principle3 4 Symbols, descriptions and units3 5 Testing equipment3 6 Test piece4 7 Procedure4 8 Test report4 Figure 1 Symbols for drift expanding test3 Table 1 Symbols, descriptions and units3 EN 10234:1993 BSI 04-19993 Introduction This standard is based on ISO
20、 8493:1986 Metallic materials Tube Drift expanding test which has been editorially changed in the light of the comments received. Minor changes have been made to clause 6 “Test pieces”. The usage of symbols has been aligned with the requirements of ISO 3545-1:1989. 1 Scope This European Standard spe
21、cifies a method for determining the ability of metallic tubes of circular cross section to undergo plastic deformation by drift expansion. It is intended that the standard should be applicable to tubes having an outside diameter not greater than 150 mm (100 mm for light metals) and thickness not gre
22、ater than 10 mm. The range of the outside diameter or thickness for which this European Standard is applicable could be more exactly specified in the relevant product standard. 2 Normative reference This European Standard incorporates by dated or undated reference, provisions from other publications
23、. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For
24、undated references the latest edition of the publication referred to applies. ISO 3545-1:1989, Steel tubes and fittings Symbols for use in specifications Part 1: Tubes and tubular accessories with circular cross-section. 3 Principle Expanding the end of a test piece cut from a tube, by means of a co
25、nical mandrel, until the maximum outside diameter of the expanded tube reaches the value specified in the relevant product standard (see Figure 1). 4 Symbols, descriptions and units Symbols, descriptions and units for the drift expanding test of tubes are in accordance with ISO 3545-1 and are given
26、in Figure 1 and Table 1. Table 1 Symbols, descriptions and units 5 Testing equipment 5.1 The test shall be carried out in a variable-speed press or a universal testing machine. SymbolDescriptionUnit DOriginal outside diameter of the tube mm TWall thickness of the tubemm LLength of the test piece bef
27、ore the test mm CMaximum outside diameter after testing mm Angle of the mandreldegree Figure 1 Symbols for drift expanding test EN 10234:1993 4 BSI 04-1999 5.2 The conical mandrel shall have an angle as specified in the relevant product standard and its surface shall be of sufficient hardness and po
28、lished. Preferred angles for the mandrel are 30, 45 and 60. 6 Test piece 6.1 The length of the test piece depends on the angle of the cone of the drift expansion mandrel. When this angle is equal to or less than 30, the length of the test piece shall be approximately L = 2D. When this angle is great
29、er than 30, the length of the test piece shall be approximately L = 1,5D. The test piece may be shorter provided that the remaining cylindrical part of the test piece after expansion is at least 0,5D. 6.2 Both ends of the test piece shall be in a plane perpendicular to the axis of the tube. The edge
30、s of the end to be tested may be rounded by filing or chamfered by other methods. NOTENon-rounded or non-chamfered edges are permissible, if the test result meets the test requirements. 6.3 When welded tubes are subjected to the test, the internal weld flash may be removed. 7 Procedure 7.1 In genera
31、l, the test shall be carried out at ambient temperature within the limits of 10 C to 35 C. The test carried out under controlled conditions shall be made at a temperature of (23 5) C. 7.2 Force the conical mandrel into the test piece without shock until the required outside diameter is reached. The
32、axis of the mandrel shall be aligned with the axis of the tube. The maximum outside diameter of the expanded part of the test piece C for relative expansion as a percentage of the diameter D shall be specified in the relevant product standard. The angle of the mandrel may be specified in the relevan
33、t product standard. When longitudinally welded tubes are subjected to the test, the mandrel may be provided with a groove to accommodate an internal weld flash. 7.3 The mandrel may be lubricated. It shall not rotate relative to the test piece during the test. 7.4 In case of dispute, the rate of pene
34、tration of the mandrel shall not exceed 50 mm/min. 7.5 Interpretation of the drift expanding test shall be carried out according to the requirements of the relevant product standard. When these requirements are not specified, absence of cracks visible without the use of magnifying aids shall be cons
35、idered as evidence that the test piece passed the test. Slight premature failure at the edges shall not be considered cause for rejection. 8 Test report 8.1 A test report shall be provided when so specified in the relevant product standard. 8.2 The test report shall include at least the following in
36、formation: a) reference to this European Standard; b) identification of the test piece; c) dimensions of the test piece; d) maximum outside diameter of the expanded part of the test piece C or relative expansion as a percentage of the original diameter; e) angle of the mandrel; f) result of the test
37、. BS EN 10234:1994 BSI 04-1999 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Iron and Steel Standards Policy Committee (ISM/-) and the Non-ferrous Metals Standards Policy Committee (NFM/-) to
38、Technical Committee ISM/NFM/4, upon which the following bodies were represented: AEA Technology Aluminium Federation British Non-ferrous Metals Federation British Railways Board British Steel Industry Copper Development Association Department of Trade and Industry (National Measurement Accreditation
39、 Service) Department of Trade and Industry (National Physical Laboratory) ERA Technology Ltd. GAMBICA (BEAMA Ltd.) Institute of Materials Light Metal Founders Association Ministry of Defence Society of British Aerospace Companies Limited University College London Welding Institute The following body
40、 was also represented in the drafting of the standard, through subcommittees and panels: British Welded Steel Tube Association BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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