DIN 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 sp).pdf

1、June 2015Translation by DIN-Sprachendienst.English price group 12No 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 25

2、.160.40!%CI;“2323824www.din.deDDIN EN ISO 14323Resistance welding Destructive testing of welds Specimen dimensions and procedure for impact tensile shear test andcross-tension testing of resistance spot and embossed projection welds(ISO 14323:2015);English version EN ISO 14323:2015,English translati

3、on of DIN EN ISO 14323:2015-06SupersedesDIN EN ISO 14323:2006-07www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 21 pages06.15Widerstandsschweien Zerstrende Prfung von Schweiverbindungen Probenabmessungen und Durchfhrung des Schlagscherz

4、ugversuchs und desSchlagkopfzugversuchs von Widerstandspunkt- und Buckelschweiungen mit geprgtenBuckeln (ISO 14323:2015);Englische Fassung EN ISO 14323:2015,Englische bersetzung von DIN EN ISO 14323:2015-06Soudage par rsistance Essais destructifs des soudures Dimensions des prouvettes et mode oprato

5、ire 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);Version anglaise EN ISO 14323:2015,Traduction anglaise de DIN EN ISO 14323:2015-06DIN EN ISO 14323:2015-06 2 A comma is used a

6、s the decimal marker. National foreword This document (EN ISO 14323:2015) has been prepared by IIW “International Institute of Welding” in colla-boration with Technical Committee CEN/TC 121 “Welding and allied processes” (Secretariat: DIN, Germany). The responsible German body involved in its prepar

7、ation was the DIN-Normenausschuss Schweien und verwandte Verfahren (DIN Standards Committee Welding and Allied Processes), Working Group NA 092-00-12-07 AK Prfen von Widerstandsschweiverbindungen (DVS AG V 3.9). The DIN Standards corresponding to the International Standards referred to in this docum

8、ent are as follows: ISO 148-2 DIN EN ISO 148-2 ISO 14272 DIN EN ISO 14272 ISO 14329:2003 DIN EN ISO 14329:2003-12 ISO 17677-1 DIN EN ISO 17677-1 Amendments This standard differs from DIN EN ISO 14323:2006-07 as follows: a) the standard has been brought in line with ISO 17677-1. Previous editions DIN

9、 EN ISO 14323: 2006-07 National Annex NA (informative) Bibliography DIN EN ISO 148-2, Metallic materials Charpy pendulum impact test Part 2: Verification of testing machines DIN EN ISO 14272, Specimen dimensions and procedure for cross tension testing resistance spot and embossed projection welds DI

10、N EN ISO 14329:2003-12, Resistance welding Destructive tests of welds Failure types and geometric measurements for resistance spot, seam and projection welds DIN EN ISO 17677-1, Resistance welding Vocabulary Part 1: Spot, projection and seam welding EN ISO 14323 March 2015 ICS 25.160.40 Supersedes E

11、N 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 - Essais destructifs des soudures -Dim

12、ensions 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 Schweiverbindungen - Probenabmessungen und Du

13、rchfhrung 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/CENELEC Internal Regulations which stipulate

14、 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 to any CEN member. This European Stand

15、ard 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 official versions. CEN members are the nati

16、onal 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, Norway, Poland, Portugal, Romania, Slo

17、vakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14323:2015 EEUROPEAN COMMITTEE FOR STA

18、NDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMContents Page Foreword . 3 Introduction . 4 1 Scope . 5 2 Normative references. 5 3 Terms and definitions 5 4 Test specimen 5 5 Test equipment and testing procedure 6 5.1 General 6

19、5.2 Modified pendulum machine . 7 5.3 Drop-weight machine . 9 6 Test records 14 7 Test report . 14 Annex A (informative) Determination of failure energy . 16 Bibliography 19 2DIN EN ISO 14323:2015-06 EN ISO 14323:2015 (E) Foreword This document (EN ISO 14323:2015) has been prepared by IIW “Internati

20、onal Institute of Welding” in collaboration 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

21、 by September 2015, and conflicting national 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

22、 such patent rights. This document supersedes 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, Est

23、onia, 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. Endorsement notice The

24、 text of ISO 14323:2015 has been approved by CEN as EN ISO 14323:2015 without any modification. 3DIN EN ISO 14323:2015-06EN ISO 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 wit

25、h ISO 14329:2003.ISO 14323 was revised to align it with ISO 17677-1.4DIN EN ISO 14323:2015-06 EN ISO 14323:2015 (E) 1 ScopeThis International Standard specifies specimen dimensions and testing procedures for impact tensile shear and cross-tension testing of resistance spot and embossed projection we

26、lds in overlapping sheets, in any metallic material of thickness 0,5 mm to 4 mm.2 Normative referencesThe 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

27、 references, the latest edition of the referenced document (including any amendments) applies.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 Term

28、s and definitionsFor the purposes of this document, the terms and definitions given in ISO 17677-1 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 cr

29、oss-tension testing3.3impact tensile shear failure energyfailure energy obtained from the impact 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

30、shown in Figure 1 and Table 1.The positional accuracy of the weld on the test specimen shall be 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 show

31、n in Figure 3. Two punched strips are placed at right angles to each other, held in the jig, and welded together.5DIN EN ISO 14323:2015-06EN ISO 14323:2015 (E)Table 1 Dimensions of impact tensile shear test specimensThickness Overlap Specimen width aSpecimen lengthFree length between clampsLength of

32、 individual test couponst a b lslfltmm 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

33、an appropriate impact-testing machine. 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

34、 tested shall be five.6DIN EN ISO 14323:2015-06 EN ISO 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 Figur

35、e 5. A U-shaped 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.

36、 To measure impact 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).7DIN EN ISO 14323:2015-06EN ISO 14323:2015 (E)Dimensions in millimetresKey1 location pin

37、s2 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-shaped ham

38、mer, equipped for testing spot-welded impact tensile shear specimens8DIN EN ISO 14323:2015-06 EN ISO 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 Impact tensile shear test spec

39、imen 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 and Figure 7 is known as a sin

40、gle 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 impact, as well as force vari

41、ation 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 striker at the time of impact sh

42、all 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 re

43、sults 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 fracture of the specimen shall be at least 1,5 times, and ideally greater than 10 times, the response time of the filter. The optimum

44、filtering system depends on the equipment and should be determined.The results can be analysed by the method given in Annex A.9DIN EN ISO 14323:2015-06EN ISO 14323:2015 (E)Key1 guide columns2 carriage weight3 striker4 inertia block5 working table6 specimen holder7 shock absorber system8 load cellsFi

45、gure 6 Example of drop-weight impact testing equipment of double striking type10DIN EN ISO 14323:2015-06 EN ISO 14323:2015 (E) Before testing After testingKey1 guide columns2 carriage weight3 stopper4 working frame5 inertia block6 load cell7 test specimen8 displacement sensorFigure 7 Example of drop

46、-weight impact testing equipment of single striking type11DIN EN ISO 14323:2015-06EN ISO 14323:2015 (E)Key1 striker mounted on drop-weight carriage2 clamping plate3 static sample holder4 test jig support mounted on load measuring system5 sample6 clamping plate7 struck sample holderNOTE Not to scale.

47、Figure 8 Sketch of drop-weight impact test set-up of double striking type for impact tensile shear testing12DIN EN ISO 14323:2015-06 EN ISO 14323:2015 (E) Key1 striker mounted on drop-weight carriage2 weld3 clamping blocks4 test jig support mounted on load measuring system5 cross-tension test pieceN

48、OTE Not to scale.Figure 9 Sketch of drop-weight impact test set-up of double striking type for cross-tension testing13DIN EN ISO 14323:2015-06EN ISO 14323:2015 (E)KeyP impact forces displacement timePmaximpact cross tension strength or impact tensile shear strengthE failure energyFigure 10 Typical t

49、races showing displacement/time, force/time, and force/displacement6 Test recordsThe test results shall be recorded with values of the tensile shear strength, type of failure mode, and weld diameter of each weld in accordance with ISO 17677-1.7 Test reportThe test report shall include the following:a) reference to this International Standard (i.e. ISO 14323);b) date and place of test;c) testing equipment used;d) setting parameters of testing equipment;e) welding process;f) welding conditions