1、Resistance welding - Vickers hardness testing (low-force and microhardness) of resistance spot, projection, and seam welds (ISO 14271:2017)BS EN ISO 14271:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 142
2、71 September 2017 ICS 25.160.40 Supersedes EN ISO 14271:2011English Version Resistance welding - Vickers hardness testing (low-force and microhardness) of resistance spot, projection, and seam welds (ISO 14271:2017) Soudage par rsistance - Essais de duret Vickers (force rduite et microduret) sur sou
3、dures par rsistance par points, par bossages et la molette (ISO 14271:2017) Widerstandsschweien - Vickers-Hrteprfung (Kleinkraft- und Mikrohrtebereich) von Widerstandspunkt-, Buckel- und Rollennahtschweiverbindungen (ISO 14271:2017) This European Standard was approved by CEN on 26 September 2017. CE
4、N 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 alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on app
5、lication 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 made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC M
6、anagement 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, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, La
7、tvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, 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: A
8、venue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14271:2017 ENational forewordThis British Standard is the UK implementation of EN ISO 14271:2017. It is identical to ISO 14271:2017. It super
9、sedes BS EN ISO 14271:2011, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee WEE/-/1, Briefing committee for welding.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to i
10、nclude all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 95771 0ICS 25.160.40Compliance with a British Standard cannot confer immunity from legal obligations.This
11、 British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 14271:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14271 September 2017 ICS
12、25.160.40 Supersedes EN ISO 14271:2011English Version Resistance welding - Vickers hardness testing (low-force and microhardness) of resistance spot, projection, and seam welds (ISO 14271:2017) Soudage par rsistance - Essais de duret Vickers (force rduite et microduret) sur soudures par rsistance pa
13、r points, par bossages et la molette (ISO 14271:2017) Widerstandsschweien - Vickers-Hrteprfung (Kleinkraft- und Mikrohrtebereich) von Widerstandspunkt-, Buckel- und Rollennahtschweiverbindungen (ISO 14271:2017) This European Standard was approved by CEN on 26 September 2017. CEN members are bound to
14、 comply 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-CE
15、NELEC 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 t
16、he same status as the official 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, Luxem
17、bourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, 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-100
18、0 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14271:2017 EBS EN ISO 14271:2017EN ISO 14271:2017 (E) 3 European foreword This document (EN ISO 14271:2017) has been prepared by Technical Committee ISO/TC IIW “In
19、ternational 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
20、 latest by March 2018, and conflicting national standards shall be withdrawn at the latest by March 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rig
21、hts. This document supersedes EN ISO 14271:2011. 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
22、ormer Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of
23、 ISO 14271:2017 has been approved by CEN as EN ISO 14271:2017 without any modification. ISO 14271:2017(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Applied forces for testing resistance welds 25 Test pieces and testing locations . 25.1 Test pieces . 25.2 Testing locat
24、ions 26 Test equipment. 27 Hardness test locations and procedure 57.1 Choice of test . 57.2 Positions of hardness indentations . 57.3 Testing procedure . 67.4 Determination of hardness values . 68 Test report . 7Bibliography 8 ISO 2017 All rights reserved iiiContents PageBS EN ISO 14271:2017ISO 1427
25、1:2017(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Applied forces for testing resistance welds 25 Test pieces and testing locations . 25.1 Test pieces . 25.2 Testing locations 26 Test equipment. 27 Hardness test locations and procedure 57.1 Choice of test . 57.2 Posi
26、tions of hardness indentations . 57.3 Testing procedure . 67.4 Determination of hardness values . 68 Test report . 7Bibliography 8 ISO 2017 All rights reserved iiiContents PageBS EN ISO 14271:2017ISO 14271:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federat
27、ion 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 be represented on that committe
28、e. 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 to develop this document and th
29、ose 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 the ISO/IEC Directives, Part 2
30、(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 during the development of the do
31、cument 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 the voluntary nature of standards, t
32、he meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.This document was prepared by
33、Technical Committee IIW, International Institute of Welding, Commission XIII, Fatigue of welded components and structures.This third edition cancels and replaces the second edition (ISO 14271:2011), which has been technically revised with the following changes: correction of Figure 4 a) and b); edit
34、orial improvements.It also incorporates the Technical Corrigendum ISO 14271-201:2011/Cor 1:2012.Requests for official interpretations of any aspect of this document should be directed to the ISO Central Secretariat, who will forward them to the IIW Secretariat for an official response.iv ISO 2017 Al
35、l rights reservedBS EN ISO 14271:2017ISO 14271:2017(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 carried out through ISO technical committees. E
36、ach 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. ISO collaborates closely with the Internati
37、onal Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used 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 differen
38、t types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of 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 no
39、t be held responsible for identifying any or all such patent rights. Details of any patent rights identified 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 inf
40、ormation given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization
41、(WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.This document was prepared by Technical Committee IIW, International Institute of Welding, Commission XIII, Fatigue of welded components and structures.This third edition cancels and replac
42、es the second edition (ISO 14271:2011), which has been technically revised with the following changes: correction of Figure 4 a) and b); editorial improvements.It also incorporates the Technical Corrigendum ISO 14271-201:2011/Cor 1:2012.Requests for official interpretations of any aspect of this doc
43、ument should be directed to the ISO Central Secretariat, who will forward them to the IIW Secretariat for an official response.iv ISO 2017 All rights reserved INTERNATIONAL STANDARD ISO 14271:2017(E)Resistance welding Vickers hardness testing (low-force and microhardness) of resistance spot, project
44、ion, and seam welds1 ScopeThis document specifies the procedures for the hardness testing of etched cross-sections of resistance spot, projection, and seam welds.The aim of the hardness tests is to determine the Vickers hardness, in the low-force or microhardness range, of the weld nugget, the heat
45、affected zone, and parent material in ferrous or non-ferrous metals for welds made in sheets of thickness 0,5 mm to 6 mm.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated refe
46、rences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 6507-1, Metallic materials Vickers hardness test Part 1: Test methodISO 6507-2, Metallic materials Vickers hardness test Part 2: Verification and calib
47、ration of testing machinesISO 6507-3, Metallic materials Vickers hardness test Part 3: Calibration of reference blocksISO 6507-4, Metallic materials Vickers hardness test Part 4: Tables of hardness valuesISO 17677-1, Resistance welding Vocabulary Part 1: Spot, projection and seam welding3 Terms and
48、definitionsFor the purposes of this document, the terms and definitions given in ISO 17677-1 and the following apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: ISO Online browsing platform: available at http:/www.iso.org/obp IEC Electropedia:
49、 available at http:/www.electropedia.org/3.1low-force hardness testVickers hardness test using an applied force greater than or equal to 1,961 N, but less than or equal to 9,807 N3.2microhardness testVickers hardness test using an applied force less than 1,961 NNote 1 to entry: Vickers hardness tests in the low-force range and Vickers microhardness tests give different results that are not easily correlated. ISO 2017 All rights reserved 1BS EN ISO 14271:2017ISO 14271:2017(E)3.3Vickers hardness valueHVe
