1、March 2014 Translation by DIN-Sprachendienst.English price group 6No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 7
2、7.040.10!%,b“2099063www.din.deDDIN EN ISO 8492Metallic materials Tube Flattening test (ISO 8492:2013);English version EN ISO 8492:2013,English translation of DIN EN ISO 8492:2014-03Metallische Werkstoffe Rohr Ringfaltversuch (ISO 8492:2013);Englische Fassung EN ISO 8492:2013,Englische bersetzung von
3、 DIN EN ISO 8492:2014-03Matriaux mtalliques Tubes Essai daplatissement (ISO 8492:2013);Version anglaise EN ISO 8492:2013,Traduction anglaise de DIN EN ISO 8492:2014-03SupersedesDIN EN ISO 8492:2004-10www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Documen
4、t comprises 7 pages02.14 DIN EN ISO 8492:2014-03 2 A comma is used as the decimal marker. National foreword This document (EN ISO 8492:2013) has been prepared by Technical Committee ISO/TC 164 “Mechanical testing of metals”, Subcommittee SC 2 “Ductility testing” (Secretariat: JISC, Japan) in collabo
5、ration with Technical Committee ECISS/TC 110 “Steel tubes, and iron and steel fittings” (Secretariat: UNI, Italy) in accordance with the agreement on technical cooperation between ISO and CEN (Vienna Agreement). The responsible German body involved in its preparation was the Normenausschuss Material
6、prfung (Materials Testing Standards Committee), Working Committee NA 062-01-53 AA Rohrprfung fr Metalle. Amendments This standard differs from DIN EN ISO 8492:2004-10 as follows: a) the standard has been editorially revised. Previous editions DIN DVM 136 = DIN 50136: 1940-09, 1964-07, 1979-06 DIN EN
7、 10233: 1994-01 DIN EN ISO 8492: 2004-10 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM November 2013 ICS 77.040.10 Supersedes EN ISO 8492:2004English Version Metallic materials - Tube - Flattening test (ISO 8492:2013) Matriaux mtalliques - Tubes - Essai daplatissement(ISO 8492:2013) Metallische
8、Werkstoffe - Rohr - Ringfaltversuch (ISO 8492:2013) This European Standard was approved by CEN on 28 October 2013. 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
9、alteration. Up-to-date lists 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
10、 made by translation under the 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, E
11、stonia, 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 United Kingdom. EUROPEAN COMMITTEE FOR S
12、TANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8492:2013 EEN ISO 8492 Contents
13、PageForeword . 31 Scope . 42 Symbols, designations and units 43 Principle 44 Testing equipment 55 Test piece 56 Procedure. 57 Test report . 52DIN EN ISO 8492:2014-03 EN ISO 8492:2013 (E) Foreword This document (EN ISO 8492:2013) has been prepared by Technical Committee ISO/TC 164 Mechanical testing
14、of metals in collaboration with Technical Committee ECISS/TC 110 “Steel tubes, and iron and steel fittings” 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
15、 May 2014, and conflicting national standards shall be withdrawn at the latest by May 2014. 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 shall not be held responsible for identifying any or all such patent ri
16、ghts. This document supersedes EN ISO 8492:2004. 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, Denmark, Estonia, Finland, F
17、ormer 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. Endorsement notice The text of ISO 849
18、2:2013 has been approved by CEN as EN ISO 8492:2013 without any modification. “”3DIN EN ISO 8492:2014-03EN ISO 8492:2013 (E)1 ScopeThis International Standard specifies a method for determining the ability of metallic tubes of circular cross-section to undergo plastic deformation by flattening. It m
19、ay also be used to reveal the defects in the tubes.This International Standard is applicable to tubes having an outside diameter no greater than 600 mm and a thickness no greater than 15 % of the outside diameter. The range of the outside diameter or thickness, for which this International Standard
20、is applicable, may be more exactly specified in the relevant product standard.2 Symbols, designations and unitsSymbols, designations and units for the flattening test are given in Table 1 and are shown in Figure 1.Table 1Symbol Designation Unita ab DHLWall thickness of the tubeInside width of flatte
21、ned test pieceOutside diameter of the tubeDistance between platens measured under loadLength of the test piecemmmmmmmmmmaThe symbol T is also used in steel tube standards.3 PrincipleFlattening the end of a tube or a test piece of specified length, cut from a tube in a direction perpendicular to the
22、longitudinal axis of the tube, until the distance between platens measured under load in the direction of flattening reaches a value specified in the relevant product standard see Figure 1, a) and b).In the case of close flattening, the internal surfaces of the test piece shall be in contact over at
23、 least half of the internal width b of the flattened test piece standard see Figure 1 c).a) b) c)Figure 14DIN EN ISO 8492:2014-03 EN ISO 8492:2013 (E) 4 Testing equipmentThe test machine is capable of flattening the test piece to the prescribed distance H between two plane, parallel, rigid platens.T
24、he width of the platens shall exceed the width of the test piece after flattening, i.e. at least 1,6 D, and the length of the platens shall extend over the whole length of the test piece.5 Test piece5.1 The length of a test piece shall be no less than 10 mm and no more than 100 mm. The edges of the
25、test piece 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 test requirements.5.2 When the test is carried out on the end of a full-length tube, the tube shall be cut at right angles to the axis of the tube to
26、 a depth of at least 80 % of the tube outside diameter. The cut shall be at a distance from the end of the tube equal to the length of the test piece.6 Procedure6.1 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 controll
27、ed conditions shall be made at a temperature of 23 C 5 C.6.2 Place the test piece between two platens.6.3 Ensure that the weld of the welded tubes is in a position as required by the relevant product standard.6.4 Flatten the test piece by moving the platens in a direction perpendicular to the longit
28、udinal axis of the tube.6.5 In case of dispute, the rate of movement of the platens shall not exceed 25 mm/min.6.6 Interpretation of the flattening test shall be carried out in accordance with the requirements of the relevant product standard. When these requirements are not specified, the test piec
29、e 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 a cause for rejection.7 Test reportA test report shall be provided when so specified in the relevant product standard. In this case, the tes
30、t report shall include at least the following information:a) a reference to this International Standard, i.e. ISO 8492;b) identification of the test piece;c) dimensions of the test piece;d) distance between platens under load (H);e) position of the weld, if relevant;f) result of the test.5DIN EN ISO 8492:2014-03EN ISO 8492:2013 (E)
