BS EN ISO 14323-2015 Resistance welding Destructive testing of welds Specimen dimensions and procedure for impact tensile shear test and cross-tension testing of resistance spot an.pdf

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1、BSI Standards PublicationBS EN ISO 14323:2015Resistance welding Destructive testing of welds Specimen dimensions and procedure for impact tensile shear test and crosstension test-ing of resistance spot andembossed projection weldsBS EN ISO 14323:2015 BRITISH STANDARDNational forewordThis British Sta

2、ndard is the UK implementation of EN ISO14323:2015. It supersedes BS EN ISO 14323:2006 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee WEE/2, Destructive Testing of Welds.A list of organizations represented on this committee can be obtained on request

3、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 2015. Published by BSI Standards Limited 2015ISBN 978 0 580 79584 8ICS 25.160.40Compliance with a British Sta

4、ndard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2015.Amendments/corrigenda issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14323 M

5、arch 2015 ICS 25.160.40 Supersedes EN ISO 14323:2006English Version Resistance welding - Destructive testing of welds - Specimen dimensions and procedure for impact tensile shear test and cross-tension testing of resistance spot and embossed projection welds (ISO 14323:2015) Soudage par rsistance -

6、Essais destructifs des soudures -Dimensions des prouvettes et mode opratoire pour les essais de cisaillement par choc et les essais de traction par choc sur prouvettes en croix des soudures par rsistance par points et par bossage (ISO 14323:2015) Widerstandsschweien - Zerstrende Prfung von Schweiver

7、bindungen - Probenabmessungen und Durchfhrung des Schlagscherzugversuchs und des Schlagkopfzugversuchs von Widerstandspunkt- und Buckelschweiungen mit geprgten Buckeln (ISO 14323:2015) This European Standard was approved by CEN on 29 November 2014. CEN members are bound to comply with the CEN/CENELE

8、C 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 obtained on application to the CEN-CENELEC Management Centre or

9、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 CEN-CENELEC Management Centre has the same status as the offic

10、ial versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,

11、Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of e

12、xploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14323:2015 EContents Page Foreword 3 BS EN ISO 14323:2015 EN ISO 14323:2015 (E)Foreword This document (EN ISO 14323:2015) has been prepared by IIW “International Institute of Welding” in collaborati

13、on with Technical Committee CEN/TC 121 “Welding and allied processes” the secretariat of which is held by DIN. 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 September 2015, and conflicting natio

14、nal standards shall be withdrawn at the latest by September 2015. 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 rights. This document supers

15、edes EN ISO 14323:2006. 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, Former Yugoslav Republic o

16、f 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 14323:2015 has been approved

17、 by CEN as EN ISO 14323:2015 without any modification. BS EN ISO 14323:2015 EN ISO 14323:2015 (E)BS EN ISO 14323:2015 ISO 2015Resistance welding Destructive testing of welds Specimen dimensions and procedure for impact tensile shear test and cross-tension testing of resistance spot and embossed proj

18、ection weldsSoudage par rsistance Essais destructifs des soudures Dimensions des prouvettes et mode opratoire pour les essais de cisaillement par choc et les essais de traction par choc sur prouvettes en croix des soudures par rsistance par points et par bossageINTERNATIONAL STANDARDISO14323Second e

19、dition2015-03-01Reference numberISO 14323:2015(E)BS EN ISO 14323:2015ISO 14323:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means,

20、electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel

21、. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS EN ISO 14323:2015ISO 14323:2015(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Test specimen 15 Test equipment and testing procedure . 25.1 General . 2

22、5.2 Modified pendulum machine 35.3 Drop-weight machine 56 Test records.107 Test report 10Annex A (informative) Determination of failure energy .12Bibliography .15 ISO 2015 All rights reserved iiiContents PageBS EN ISO 14323:2015ISO 14323:2015(E)ForewordISO (the International Organization for Standar

23、dization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally 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

24、 be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used

25、 to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of

26、 the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified

27、 during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on th

28、e meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/I

29、IW, International Institute of Welding, Commission III.This second edition cancels and replaces the first edition (ISO 14323:2006), which has been technically revised.Requests for official interpretations of any aspect of this International Standard should be directed to the ISO Central Secretariat,

30、 who will forward them to the IIW Secretariat for an official response.iv ISO 2015 All rights reservedBS EN ISO 14323:2015ISO 14323:2015(E)IntroductionThis edition of ISO 14323 no longer includes figures showing failure types and modes for tensile shear and cross tension testing in accordance with I

31、SO 14329:2003.ISO 14323 was revised to align it with ISO 17677-1. ISO 2015 All rights reserved vBS EN ISO 14323:2015BS EN ISO 14323:2015Resistance welding Destructive testing of welds Specimen dimensions and procedure for impact tensile shear test and cross-tension testing of resistance spot and emb

32、ossed projection welds1 ScopeThis International Standard specifies specimen dimensions and testing procedures for impact tensile shear and cross-tension testing of resistance spot and embossed projection welds in overlapping sheets, in any metallic material of thickness 0,5 mm to 4 mm.2 Normative re

33、ferencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

34、ISO 14272, Specimen dimensions and procedure for cross tension testing resistance spot and embossed projection weldsISO 17677-1, Resistance welding Vocabulary Part 1: Spot, projection and seam welding3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 176

35、77-1 and the following apply.3.1impact cross-tension failure energyfailure energy obtained from the impact cross-tension testing3.2impact cross-tension strengthmaximum impact force obtained in the impact cross-tension testing3.3impact tensile shear failure energyfailure energy obtained from the impa

36、ct tensile shear testing3.4impact tensile shear strengthmaximum impact force obtained in the impact tensile shear testing4 Test specimenThe dimensions and form of the impact tensile shear test specimen are shown in Figure 1 and Table 1.The positional accuracy of the weld on the test specimen shall b

37、e 1 mm or less in every direction.The dimensions and form of the impact cross-tension specimen are shown in Figure 2 (see ISO 14272).An example of a jig for welding the impact cross-tension specimen is shown in Figure 3. Two punched strips are placed at right angles to each other, held in the jig, a

38、nd welded together.INTERNATIONAL STANDARD ISO 14323:2015(E) ISO 2015 All rights reserved 1BS EN ISO 14323:2015ISO 14323:2015(E)Table 1 Dimensions of impact tensile shear test specimensThickness Overlap Specimen width aSpecimen lengthFree length between clampsLength of individual test couponst a b ls

39、lfltmm mm mm mm mm mm0,5 t 1,5 35 45 175 95 1051,5 t 3 45 60 230 105 1383 t 4 60 90 260 120 160Key1 direction of test load2 weld3 clamping zoneFigure 1 Impact tensile shear test specimen5 Test equipment and testing procedure5.1 GeneralTesting can be accomplished with an appropriate impact-testing ma

40、chine. If needed, the load can be obtained using hydraulic test equipment.The pendulum-type machine is generally used for a sheet thickness range of 0,5 mm to 3 mm, and the drop-weight machine for a sheet thickness range of 1 mm to 4 mm.The minimum number of specimens tested shall be five.2 ISO 2015

41、 All rights reservedBS EN ISO 14323:2015ISO 14323:2015(E)Dimensions in millimetresKey1 weldNOTE Weld is centred.Figure 2 Impact cross-tension test specimen5.2 Modified pendulum machineThe test specimen is fixed between the clamping device and the crosshead as shown in Figure 4 and Figure 5. A U-shap

42、ed hammer shall be used for testing and is attached to the pendulum.At the bottom of the pendulum swing, the hammer strikes the crosshead. The energy to failure is indicated by the extent of the upward swing of the pendulum. The velocity of the pendulum at the time of impact is 5,5 m/s. To measure i

43、mpact force, strain gauges attached to the clamping device or an appropriate load cell shall be used (see Figure 4 and Figure 5). The failure energy is determined as a function of time (see Annex A). ISO 2015 All rights reserved 3BS EN ISO 14323:2015ISO 14323:2015(E)Dimensions in millimetresKey1 loc

44、ation pins2 specimen3 welding electrodes4 insulating materialsFigure 3 Example of cross-tension test specimen in welding jigKey1 hammer 6 clamping device2 strain gauge/load cell 7 test specimen3 lamp 8 cross head4 photodiode 9 power supply5 strain gauge 10 amplifierFigure 4 Pendulum machine with U-s

45、haped hammer, equipped for testing spot-welded impact tensile shear specimens4 ISO 2015 All rights reservedBS EN ISO 14323:2015ISO 14323:2015(E)Key1 pivot (maximum rotation 2)2 cross head (introduce load into test piece)3 strain gauge4 impact part of the hammer5 fixed part of the specimenFigure 5 Im

46、pact tensile shear test specimen and details of crosshead5.3 Drop-weight machineThe drop-weight machine has a variable mass that can be dropped onto the specimen from different heights. There are two types of equipment as shown in Figure 6 and Figure 7. Figure 6 is known as a double striking type an

47、d Figure 7 is known as a single striking type.The impact tensile shear test specimen and the impact cross-tension test specimen are held in clamps as shown in Figures 8 and Figure 9. The drop-weight machine shall be equipped with instrumentation to monitor displacement or velocity before and after i

48、mpact, as well as force variation during impact. The difference in velocity can be used to calculate the total energy absorbed by the sample. To ensure complete fracture of the welded specimens, the impact energy shall be greater than 10 times the failure energy. The velocity of the drop-weight stri

49、ker at the time of impact shall be in the range 5 m/s to 15 m/s.The force variation during failure shall be monitored by load cells mounted beneath the four corners of the anvil, as shown in Figure 8 and Figure 9. Alternatively, a load cell can be mounted in the specimen clamp device to provide the force signal. Examples of results using a drop-weight machine are shown in Figure 10.To avoid excessive attenuation of the force/time signal through the electronic filtering system, the time to f