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1、 Reference number ISO 14323:2006(E) ISO 2006 INTERNATIONAL STANDARD ISO 14323 First edition 2006-05-01 Resistance spot welding and projection welds Destructive testing of welds Specimen dimensions and procedure for impact shear test and cross-tension testing Soudage par rsistance par points et par b
2、ossages Essais destructifs des soudures Dimensions des prouvettes et procdure dessai de cisaillement par choc et dessai de traction par choc sur prouvettes en croix Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/997
3、2545001 Not for Resale, 04/18/2007 19:51:56 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 14323:2006(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited
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6、. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2006 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical,
7、 including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org P
8、ublished in Switzerland ii ISO 2006 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:51:56 MDTNo reproduction or networking permitted without license from I
9、HS -,-,- ISO 14323:2006(E) ISO 2006 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 1 4 Test specimen. 4 5 Test equipment and testing procedure 6 5.1 General. 6 5.2 Modified pendulum machine . 6 5.3 Drop-weight machine .
10、 8 6 Test report . 12 Annex A (informative) Determination of absorbed energy 13 Bibliography. 18 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:51:56 MDTNo reproduction or ne
11、tworking permitted without license from IHS -,-,- ISO 14323:2006(E) iv ISO 2006 All rights reserved 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 normally
12、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 the wo
13、rk. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare Inte
14、rnational Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of t
15、he 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. ISO 14323 was prepared by the International Institute of Welding, recognized as an international standardizing body in the field of welding in accordance
16、 with Council Resolution 42/1999. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:51:56 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 14323:200
17、6(E) ISO 2006 All rights reserved v Introduction Requests for official interpretations of provisions in this standard should be made in writing and sent to the ISO Central Secretariat who will forward them to the IIW Secretariat for an official response. Copyright International Organization for Stan
18、dardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:51:56 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with
19、ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:51:56 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 14323:2006(E) ISO 2006 All rights reserved 1 Resistance spot welding and projection welds Destructive testing of
20、 welds Specimen dimensions and procedure for impact shear test and cross-tension testing 1 Scope This International Standard covers destructive testing of welds. This International Standard specifies specimen dimensions and testing procedures for impact shear and cross-tension testing of resistance
21、spot and embossed projection welds in overlapping sheets, in any metallic material of thickness 0,5 mm to 4 mm. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated referenc
22、es, the latest edition of the referenced document (including any amendments) applies. ISO 669, Resistance welding Resistance welding equipment Mechanical and electrical requirements ISO 14272, Specimen dimensions and procedure for cross tension testing resistance spot and embossed projection welds I
23、SO 14329, Resistance welding Destructive tests of welds Failure types and geometric measurements for resistance spot, seam and projection welds 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 669 and ISO 14329 and the following apply. 3.1 corona bond
24、 area of the weld at the faying surfaces in which solid-phase bonding has occurred 3.2 impact cross-tension failure energy failure energy measured in the impact cross-tension test 3.3 impact cross-tension force maximum force measured in the impact cross-tension test 3.4 impact shear failure energy f
25、ailure energy measured in the impact shear test Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:51:56 MDTNo reproduction or networking permitted without license from IHS -,-,-
26、 ISO 14323:2006(E) 2 ISO 2006 All rights reserved 3.5 impact shear force maximum force measured in the impact shear test 3.6 interface failure fracture through the weld (nugget) between the sheets at the plane of the interface See Figure 1 b). 3.7 nominal weld diameter diameter of the plug (slug/but
27、ton) measured at the base of the nugget See Figure 1 a). 3.8 plug failure slug/button failure fracture in the base metal, the heat-affected zone, or in the nugget leaving a plug See Figure 1 a). 3.9 weld diameter d interface failure diameter of the fused zone measured at the interface, omitting the
28、corona bond area See Figure 1 b). 3.10 weld diameter d partial plug failure mean diameter of the fused zone measured at the interface, omitting the corona bond area and the maximum diameter of the plug component of the failure NOTE The minimum diameter of the plug component should be quoted separate
29、ly see Figure 1 a) and b). 3.11 weld diameter d plug failure average diameter of the plug See Figure 1 a). Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:51:56 MDTNo reproduc
30、tion or networking permitted without license from IHS -,-,- ISO 14323:2006(E) ISO 2006 All rights reserved 3 Key 1 symmetrical 2 asymmetrical 3 partial a d = dp = (d1 + d2)/2 b d = (d1 + d2)/2 and dp = (d2 + d3)/2 where dp is the mean plug diameter; d1 is the maximum weld diameter; d2 is the minimum
31、 weld diameter; d3 is the minimum width of plug. a) Weld with plug (slug) failure Figure 1 Measuring weld diameter Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:51:56 MDTNo
32、reproduction or networking permitted without license from IHS -,-,- ISO 14323:2006(E) 4 ISO 2006 All rights reserved Key 1 sheared nugget 2 corona bond zone 3 nugget a Diameter of the corona. b Diameter of the nugget. b) Weld with interface failure, d dc Figure 1 (continued) 4 Test specimen Dimensio
33、ns and form of the impact shear test specimen are shown in Figure 2 and Table 1. Dimensions and form of the impact cross-tension specimen are shown in Figure 3 (see ISO 14272). An example of a jig for welding the cross-tension specimen is shown in Figure 4. Two punched strips are placed at right ang
34、les to each other, held in the jig, and welded together. Key 1 direction of test load 2 weld Figure 2 Form of impact shear test specimen Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/1
35、8/2007 19:51:56 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 14323:2006(E) ISO 2006 All rights reserved 5 Table 1 Dimensions of impact shear test specimens Dimensions in millimetres Sheet thickness Overlap Width Length Overall length Unclamped length t a b l ls lf 0,
36、5 u t u 1,5 35 45 105 175 95 1,5 t u 3,0 45 60 138 230 105 3,0 t u 4,0 60 90 160 260 120 Dimensions in millimetres Key 1 weld is centred Figure 3 Form of impact cross-tension test specimen Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA T
37、echnical Standards 1/9972545001 Not for Resale, 04/18/2007 19:51:56 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 14323:2006(E) 6 ISO 2006 All rights reserved Dimensions in millimetres Key 1 location pins 2 specimen 3 welding electrodes 4 insulating materials Figure 4
38、 Example of cross-tension test specimen in a welding jig 5 Test equipment and testing procedure 5.1 General Testing can be accomplished with an appropriate impact-testing machine. The minimum number of specimens tested shall be five. NOTE 1 The pendulum-type machine is generally used for a sheet thi
39、ckness range of 0,5 mm to 3 mm, and the drop-weight machine for a sheet thickness range of 1 mm to 4 mm. NOTE 2 If needed, the load can be obtained using hydraulic test equipment. 5.2 Modified pendulum machine The test specimen is fixed between the clamping device and the crosshead using the equipme
40、nt shown in Figures 5 and 6. 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 t
41、ime of impact is 5,5 m/s. To measure impact force, strain gauges attached to the clamping device or an appropriate load cell shall be used (see Figures 5 and 6). The absorbed energy is determined as a function of time (see Annex A). Copyright International Organization for Standardization Provided b
42、y IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:51:56 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 14323:2006(E) ISO 2006 All rights reserved 7 Key 1 hammer 6 clamping device 2 strain gauge/load cell 7 test sp
43、ecimen 3 lamp 8 cross head 4 photodiode 9 power supply 5 strain gauge 10 amplifier Figure 5 Pendulum machine with U-shaped hammer, equipped for testing spot-welded impact shear specimens Key 1 pivot (maximum rotation 2) 2 cross head (introduce load into test piece) 3 strain gauge 4 impact part of th
44、e hammer 5 fixed part of the specimen Figure 6 Impact shear test specimen and details of cross head Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:51:56 MDTNo reproduction or
45、 networking permitted without license from IHS -,-,- ISO 14323:2006(E) 8 ISO 2006 All rights reserved 5.3 Drop-weight machine The 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 Figures 7 a) and 7 b).
46、Figure 7 a) is known as a double striking type and Figure 7 b) is known as a single striking type. The impact shear test specimen and the impact cross- tension test specimen are held in clamps as shown in Figures 8 a) and 8 b). The drop-weight machine shall be equipped with instrumentation to monito
47、r displacement or velocity before and after impact, 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 striker at the time of impact shall be in the range (5 to 15) m/s. Key 1 guide columns 2 carriage weight 3 striker 4 inertia block 5 working table 6 specimen holder 7 shock abso