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1、BRITISH STANDARD BS EN ISO 8493:2004 Metallic materials Tube Drift-expanding test The European Standard EN ISO 8493:2004 has the status of a British Standard ICS 77.040.10 ? BS EN ISO 8493:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on
2、24 November 2004 BSI 24 November 2004 ISBN 0 580 44836 3 National foreword This British Standard is the official English language version of EN ISO 8493:2004. It is identical with ISO 8493:1998. It supersedes BS EN 10234:1994 which is withdrawn. The UK participation in its preparation was entrusted
3、by Technical Committee ISE/NFE/4, Mechanical testing of metals, to Subcommittee ISE/NFE/4/2, Ductility testing, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implemen
4、t international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does n
5、ot purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European c
6、ommittee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the
7、EN ISO foreword page, the ISO title page, page ii, pages 1 to 3 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8493 J
8、uly 2004 ICS 77.040.10Supersedes EN 10234:1993 English version Metallic materials - Tube - Drift-expanding test (ISO 8493:1998) Matriaux mtalliques - Tubes - Essai dvasement (ISO 8493:1998) Metallische Werkstoffe - Rohr - Aufweitversuch (ISO 8493:1998) This European Standard was approved by CEN on 1
9、 July 2004. 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 and bibliographical references concerning such national standards may be o
10、btained on application to the Central Secretariat 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 Central S
11、ecretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
12、 Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CENAll rights of exploitation in any form and by any means re
13、served worldwide for CEN national Members. Ref. No. EN ISO 8493:2004: E I NESO 48:3902( 40E) 2 Foreword The text of ISO 8493:1998 has been prepared by Technical Committee ISO/TC 164 “Mechanical testing of metals” of the International Organization for Standardization (ISO) and has been taken over as
14、EN ISO 8493:2004 by Technical Committee ECISS/TC 29 “Steel tubes and fittings for steel tubes“, the secretariat of which is held by UNI. 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 January 200
15、5, and conflicting national standards shall be withdrawn at the latest by January 2005. This document supersedes EN 10234:1993. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, B
16、elgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 849
17、3:1998 has been approved by CEN as EN ISO 8493:2004 without any modifications. EN ISO 8493:2004 A Reference number ISO 8493:1998(E) INTERNATIONAL STANDARD ISO 8493 Second edition 1998-11-01 Metallic materials Tube Drift-expanding test Matriaux mtalliques Tubes Essai dvasement EN ISO 8493:2004 )E(899
18、1:3948 OSI OSI 8991 Athgir lls serevr.de selnUs tosiwrehe scepfi,dei trap on fo thsi cilbuptayam noi cudorper ebtu ro dezilide ni yna fomr ro yb nay msnae, lecetrinoc .rehsilbup eht morf gnitirw ni noissimrep tuohtiw ,mliforcim dna gniypocotohp gnidulcni ,lacinahcem ro noitazidradnatS rof noitazinag
19、rO lanoitanretnI 65 elatsop esaC 02 evneG 1121-HC dnalreztiwS tenretnIhc.osiosi dnalreztiwS ni detnirP ii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is nor
20、mally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in
21、the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard r
22、equires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 8493 was prepared by Technical Committee ISO/TC 164, Mechanical testing of metals, Subcommittee SC 2, Ductility testing. This second edition cancels and replaces the first edition (ISO 8493:1986), of wh
23、ich it constitutes a technical revision. EN ISO 8493:2004 DRADNATS LANOITANRETNI OSI)E(8991:3948 OSI 1 Metallic materials Tube Drift-expanding test 1 Scope This International Standard specifies a method for determining the ability of metallic tubes of circular cross-section to undergo plastic deform
24、ation in drift expansion. This International Standard is intended for tubes having an outside diameter no greater than 150 mm (100 mm for light metals) and a thickness no greater than 10 mm although the range of the outside diameter or the thickness for which this International Standard is applicabl
25、e may be more exactly specified in the relevant product standard. 2 Symbols, designations and units Symbols, designations and units for the drift-expanding test of tubes are given in table 1 and are shown in figure 1. Table 1 SymbolDesignationUnit aaWall thickness of the tubemm DOriginal outside dia
26、meter of the tubemm DuMaximum outside diameter after testingmm LLength of the test piece before testingmm bAngle of the conical mandreldegree a The symbol T is also used in steel tube standards. Figure 1 EN ISO 8493:2004 )E(8991:3948 OSI OSI 2 3 Principle Expansion of the end of the test piece cut f
27、rom the tube, by means of a conical mandrel, until the maximum outside diameter of the expanded tube reaches the value specified in the relevant product standard (see figure 1). 4 Testing equipment 4.1 Variable-speed press or universal testing machine. 4.2 Conical mandrel, which shall have an angle
28、as specified in the relevant product standard and its surface shall be made of polished material of sufficient hardness. Preferred angles for the conical mandrel are 30, 45 and 60. 5 Test piece 5.1 The length of the test piece depends on the angle of the cone of the drift-expansion conical mandrel.
29、When this angle is equal to or less than 30, the length of the test piece shall be approximately L = 2 D. When this angle is greater than 30, the length of the test piece shall be approximately L = 1,5 D. The test piece may be shorter provided that the remaining cylindrical part of the test piece af
30、ter expansion is at least 0,5 D. 5.2 Both ends of the test piece shall be in the plane perpendicular to the axis of the tube. The edges of the end to be tested may be rounded by filing or chamfered by other methods. NOTE Non-rounded or non-chamfered edges are permissible if the test result meets the
31、 test requirements. 5.3 When welded tubes are subjected to the test, the internal weld flash may be removed. 6 Procedure 6.1 In general, 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 tempera
32、ture of 23 C 5 C. 6.2 Force the conical mandrel into the test piece, without shock, until the required outside diameter is reached. The axis of the conical mandrel shall be aligned with the axis of the tube. The maximum outside diameter of the expanded part of the test piece, Du, or relative expansi
33、on as a percentage of the original diameter, D, shall be specified in the relevant product standard. The angle of the conical mandrel, b, may be specified in the relevant product standard. When longitudinally welded tubes are subjected to the test, the conical mandrel may be provided with a groove t
34、o accommodate an internal weld flash. 6.3 The conical mandrel may be lubricated. It shall not rotate relative to the test piece during the test. 6.4 In case of dispute, the rate of penetration of the conical mandrel shall not exceed 50 mm/min. 6.5 Interpretation of the drift-expanding test shall be
35、carried out in accordance with the requirements of the relevant product standard. When these requirements are not specified, the test piece shall be considered to have passed the test if no cracks are visible without the use of magnifying aids. Slight cracking at the edges shall not be considered ca
36、use for rejection. EN ISO 8493:2004 OSI)E(8991:3948 OSI 3 7 Test report A test report shall be provided when so specified in the relevant product standard. In this case, the test report shall include at least the following information: a) reference to this International Standard, i.e. ISO 8493; b) i
37、dentification of the test piece; c) dimensions of the test piece; d) maximum outside diameter of the expanded part of the test piece, Du, or relative expansion as a percentage of the original diameter, D; e) angle of the conical mandrel; f) result of the test. EN ISO 8493:2004 BS EN ISO 8493:2004 BS
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