1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 17653:2012Resistance welding Destructive tests on welds inmetallic materials Torsiontest of resistance spot welds(ISO 17653:2012)BS EN ISO 17653:2012 BRITISH STANDARDNa
2、tional forewordThis British Standard is the UK implementation of EN ISO17653:2012. It supersedes BS EN ISO 17653:2003 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee WEE/29, Resistance welding.A list of organizations represented on this committee can be
3、obtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 70474 1ICS 25.160.40Compliance w
4、ith a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2012.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17653
5、 May 2012 ICS 25.160.40 Supersedes EN ISO 17653:2003English Version Resistance welding - Destructive tests on welds in metallic materials - Torsion test of resistance spot welds (ISO 17653:2012) Soudage par rsistance - Essais destructifs des soudures sur matriaux mtalliques - Essai de torsion de sou
6、dure par rsistance par points (ISO 17653:2012) Widerstandsschweien - Zerstrende Prfung von Schweiverbindungen an metallischen Werkstoffen - Torsionsversuch an Widerstandspunktschweiverbindungen (ISO 17653:2012)This European Standard was approved by CEN on 20 April 2012. CEN members are bound to comp
7、ly 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 obtained on application to the CEN-CENELEC
8、 Management Centre 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 CEN-CENELEC Management Centre has the sa
9、me status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, P
10、ortugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and b
11、y any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17653:2012: EBS EN ISO 17653:2012EN ISO 17653:2012 (E) 3 Foreword This document (EN ISO 17653:2012) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes” in collaboration with Technical Committee CEN
12、/TC 121 “Welding” 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 November 2012, and conflicting national standards shall be withdrawn at the latest by Nov
13、ember 2012. 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 supersedes EN ISO 17653:2003. According to the CEN/CENELEC I
14、nternal 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Lu
15、xembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17653:2012 has been approved by CEN as a EN ISO 17653:2012 without any modification. BS EN ISO 17653:2012ISO 17653:2012(E
16、) ISO 2012 All rights reserved iiiContents PageForeword iv1 Scope 12 Normative references . 13 Terms and definitions . 14 Specimens . 15 Testing equipment and testing procedure 25.1 Non-instrumented torsion test (workshop test) 25.2 Instrumented torsion test 36 Evaluation of test results whenever ap
17、plying the instrumented torsion tests . 47 Test report . 5BS EN ISO 17653:2012ISO 17653:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carrie
18、d 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 work. IS
19、O 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 Internationa
20、l 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 the elemen
21、ts 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 17653 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 6, Resistance welding and allied mechanical joining.This sec
22、ond edition cancels and replaces the first edition (ISO 17653:2003), which has been technically revised.iv ISO 2012 All rights reservedBS EN ISO 17653:2012INTERNATIONAL STANDARD ISO 17653:2012(E)Resistance welding Destructive tests on welds in metallic materials Torsion test of resistance spot welds
23、1 ScopeThis International Standard specifies specimen dimensions, testing equipment and the procedure for torsion testing of resistance spot welds with single sheet thicknesses ranging from 0,5 mm to 6,0 mm in steels. It can be used for non-ferrous materials in certain circumstances.The aim of this
24、International Standard is to determine the weld diameter and the failure type of fractured specimens, and to evaluate the influence of different steel types, welding parameters and other factors on the deformation characteristics of a resistance spot weld.2 Normative referencesThe following referenc
25、ed documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 14329, Resistance welding Destructive tests of welds Failure types a
26、nd geometric measurements for resistance spot, seam and 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 14329 and ISO 17677-1 and the following apply.3
27、.1non-instrumented torsion testtest used to determine weld diameter and failure type of welds without measuring torque or torsion angle3.2instrumented torsion testtorsion test with measuring instruments for torque or torsion angle to evaluate the mechanical properties of welds as well as the weld di
28、ameter and failure type4 SpecimensSpecimens for torsion testing are welded individually. The two coupons with a minimum width of 40 mm and a minimum length of 60 mm shall be welded together such that they can be rotated relative to each other (see Figure 1). The distance of the centre of the spot we
29、ld from outer edge in longitudinal direction shall be minimum 20 mm. ISO 2012 All rights reserved 1BS EN ISO 17653:2012ISO 17653:2012(E)Keyl1, l2length of coupons ( 60 mm)b1, b2width of coupons ( 40 mm) stacking angle between both coupons before testingThe distance of the centre of the spot weld fro
30、m outer edge of the coupon in longitudinal direction shall be 20 mm.Figure 1 Specimen5 Testing equipment and testing procedure5.1 Non-instrumented torsion test (workshop test)For the non-instrumented torsion test (workshop test), the lower sheet of the specimen is gripped as shown in Figure 2. The u
31、pper sheet of the specimen is held in a plier or flattened end pipe as shown in Figure 2 a), and rotated steadily in one direction until failure of the spot weld. The testing device shall be designed to minimize the bending of the two sheets of the specimen during testing in order to maintain pure t
32、orsional loading of the spot weld. This is necessary to increase the comparability of the test results. This test method determines the weld diameter and the failure type.NOTE In the case of sheet material thicker than 2,0 mm the other sheet of the specimen can be gripped with the movable specimen g
33、ripper, and rotated until failure.2 ISO 2012 All rights reservedBS EN ISO 17653:2012ISO 17653:2012(E)a) For specimens of thicker thicknesses b) For specimens of thinner thicknessesKey1 specimen2 specimen gripper3 handle4 spot weld 5 notch to stop slipping of specimen6 fixed specimen gripper mounting
34、7 flattened part of pipe as specimen gripper8 viceFigure 2 Examples of torsion testing devices used only to determine weld diameter and failure type5.2 Instrumented torsion testThe device used for the instrumented torsion test shall be constructed such that the clearance between the edge of the spec
35、imen and the tooling does not exceed 0,3 mm. The specimen shall be positioned such that the interface between the two sheets corresponds to the torsional plane of the device. Shims or an adjusting mechanism may be used for this purpose. Torque shall be applied to the longer sides of the specimen. Ro
36、tation of the specimen shall be possible without tilting the specimen sheets or the gripper. ISO 2012 All rights reserved 3BS EN ISO 17653:2012ISO 17653:2012(E)Key1 specimen2a specimen grip (rotatable)2b specimen grip (fixed)3 torque bar4 strain gauge5 strain gauge amplifier6 torsion angle sensor7 d
37、ata recorder8 grips of clamping device for holding testing jig9 rotation axis10 housing for specimen grippers 2a and 2b with common rotation axis and bearing11 bearingFigure 3 Example of measuring equipment for instrumented torsion testThe torque is applied manually using a lever or a mechanized dri
38、ve on the rotating part of the testing device (upper part). During testing, the lever is moved steadily through 90 in approximately 5 s.Torque and torsion angle are measured during testing, using measuring equipment as shown in Figure 3, for example. The values should be recorded using a suitable in
39、strument, for example a data recorder.The centre of electrode indentation shall not deviate by more than 0,5 mm from the axis of rotation.6 Evaluation of test results whenever applying the instrumented torsion testsA torque, T, torsion angle, , curve is used to determine the maximum torque, Tmax, an
40、d the corresponding torsion angle (see Figure 4).4 ISO 2012 All rights reservedBS EN ISO 17653:2012ISO 17653:2012(E)KeyT torqueTmaxmaximum torque torsion angleFigure 4 Example of a torque vs. torsion angle curve recorded in a torsion testThe weld diameter and failure type shall be determined from th
41、e fractured specimens in accordance with ISO 14329.NOTE Torque, torsion angle and failure type are dependent on the sheet thickness, the weld diameter and the mechanical characteristics of the weld nugget, heat-affected zone and parent metal.7 Test reportThe test report shall include at least the fo
42、llowing information:a) reference to this International Standard, i.e. ISO 17653:2012;b) welding equipment used;c) welding conditions;d) designation of the materials and sheet thicknesses;e) weld diameter, d;f) maximum torque and corresponding torsion angle, if applicable;g) failure type, appearance
43、of the fractured surface (spatter or weld splash, pores, lack of fusion);h) details of the test procedure and measuring equipment used;i) any deviations from this International Standard. ISO 2012 All rights reserved 5This page deliberately left blankThis page deliberately left blankBSI is the indepe
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