1、BSI Standards PublicationBS EN ISO 18278-1:2015Resistance welding WeldabilityPart 1: General requirements for theevaluation of weldability for resistance spot,seam and projection welding of metallicmaterialsBS EN ISO 18278-1:2015 BRITISH STANDARDNational forewordThis British Standard is the UK imple
2、mentation of EN ISO18278-1:2015. It supersedes BS EN ISO 18278-1:2004 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee WEE/29, Resistance welding.A list of organizations represented on this committee can beobtained on request to its secretary.This publica
3、tion does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 83203 1ICS 25.160.01; 25.160.10Compliance with a British Standard cannot confer i
4、mmunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2015.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 18278-1 April 2015 ICS 25.160.01 Supersed
5、es EN ISO 18278-1:2004English Version Resistance welding - Weldability - Part 1: General requirements for the evaluation of weldability for resistance spot, seam and projection welding of metallic materials (ISO 18278-1:2015) Soudage par rsistance - Soudabilit - Partie 1: Exigences gnrales pour lval
6、uation de la soudabilit pour le soudage par rsistance par points, la molette et par bossages des matriaux mtalliques (ISO 18278-1:2015) Widerstandsschweien - Schweieignung - Teil 1: Bewerten der Schweieignung zum Widerstandspunkt-, Rollennaht- und Buckelschweien von metallischen Werkstoffen (ISO 182
7、78-1:2015) This European Standard was approved by CEN on 17 January 2015. CEN 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 bibliogr
8、aphical references concerning such national standards may be obtained on application 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 responsibi
9、lity 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 national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic
10、 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 United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISA
11、TION EUROPISCHES KOMITEE FR NORMUNG 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 18278-1:2015 EBS EN ISO 18278-1:2015EN ISO 18278-1:2015 (E) 3 Foreword Th
12、is document (EN ISO 18278-1:2015) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes” 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 natio
13、nal standard, either by publication of an identical text or by endorsement, at the latest by October 2015, and conflicting national standards shall be withdrawn at the latest by October 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of paten
14、t rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 18278-1:2004. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Europ
15、ean Standard: 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, Slovakia, Slov
16、enia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 18278-1:2015 has been approved by CEN as EN ISO 18278-1:2015 without any modification. BS EN ISO 18278-1:2015ISO 18278-1:2015(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions .
17、24 Weldability 34.1 Weldability of a component . 34.1.1 General 34.1.2 Metallurgical weldability 34.1.3 Operative weldability . 34.1.4 Constructional weldability 34.2 Criteria for the evaluation of weldability . 35 Preparation of welding equipment . 45.1 Welding machine . 45.2 Welding electrodes 45.
18、2.1 General 45.2.2 Spot welding 45.2.3 Seam welding 45.2.4 Projection welding . 55.3 Measurement of parameters . 55.3.1 Welding current 55.3.2 Electrode force . 56 Test procedures . 56.1 General . 56.2 Basic test procedures 56.2.1 Essential variables 56.2.2 Welding current range test . 66.2.3 Electr
19、ode life test . 66.3 Evaluation of weld properties 76.3.1 General 76.3.2 Shop floor tests 76.3.3 Tensile shear testing . 76.3.4 Mechanized peel testing 76.3.5 Cross tension testing 76.3.6 Macro-sections and hardness test 86.3.7 Further weld properties 87 Test report . 87.1 General . 87.2 Welding cur
20、rent range test . 87.3 Electrode life test 8Annex A (informative) How to evaluate the mass and friction of the welding head 10Bibliography .11 ISO 2015 All rights reserved iiiContents PageBS EN ISO 18278-1:2015ISO 18278-1:2015(E)ForewordISO (the International Organization for Standardization) is a w
21、orldwide 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 be represented
22、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 to develop this
23、 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 the ISO/IEC Dir
24、ectives, 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 during the devel
25、opment 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 the meaning of ISO s
26、pecific 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 Information .The committee responsible for this document is ISO/TC 44, Welding and
27、 allied processes, Subcommittee SC 6, Resistance welding and allied mechanical joining.This second edition cancels and replaces the first edition (ISO 18278-1:2004), which has been technically revised.ISO 18278 consists of the following parts, under the general title Resistance welding Weldability:
28、Part 1: General requirements for the evaluation of weldability for resistance spot, seam and projection welding of metallic materials Part 2: Evaluation procedures for weldability in spot weldingiv ISO 2015 All rights reservedBS EN ISO 18278-1:2015Resistance welding Weldability Part 1: General requi
29、rements for the evaluation of weldability for resistance spot, seam and projection welding of metallic materials1 ScopeThis part of ISO 18278 specifies procedures for assessing the generic weldability for resistance welding of uncoated and coated metals.It is assumed for this and other linked standa
30、rds that their application is entrusted to appropriately trained, skilled, and experienced personnel.For the quality of welded structures, the relevant part of ISO 14554 is applicable. The specification of procedures is to follow guidelines as in ISO 15609-5.The purpose of the tests are toa) compare
31、 the metallurgical weldability of different metals,b) assess the weldability of differing component designs, e.g. dimensional configuration, stack-up, projection geometry, etc.,c) investigate the effect of changes in welding parameters such as welding current, weld time, electrode force or complex w
32、elding schedules including pulse welding, current stepping etc. on weldability, and/ord) compare the performance of resistance welding equipment.Precise details of the test procedure to be used will depend on which aspect of items a) to d) will be evaluated relative to the welding result obtained.2
33、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 references, the latest edition of the referenced document (including any amendmen
34、ts) applies.ISO 669, Resistance welding Resistance welding equipment Mechanical and electrical requirementsISO 693, Dimensions of seam welding wheel blanksISO 5182, Resistance welding Materials for electrodes and ancillary equipmentISO 5821, Resistance welding Spot welding electrode capsISO 8167, Pr
35、ojections for resistance weldingISO 10447, Resistance welding Peel and chisel testing of resistance spot and projection weldsISO 14270, Resistance welding Destructive testing of welds Specimen dimensions and procedure for mechanized peel testing resistance spot, seam and embossed projection weldsINT
36、ERNATIONAL STANDARD ISO 18278-1:2015(E) ISO 2015 All rights reserved 1BS EN ISO 18278-1:2015ISO 18278-1:2015(E)ISO 14271, Resistance welding Vickers hardness testing (low-force and microhardness) of resistance spot, projection, and seam weldsISO 14272, Resistance welding Destructive testing of welds
37、 Specimen dimensions and procedure for cross tension testing of resistance spot and embossed projection weldsISO 14273, Resistance welding Destructive testing of welds Specimen dimensions and procedure for tensile shear testing resistance spot, seam and embossed projection weldsISO 14323, Resistance
38、 welding Destructive testing of welds Specimen dimensions and procedure for impact tensile shear test and cross-tension testing of resistance spot and embossed projection weldsISO 14324, Resistance spot welding Destructive tests of welds Method for the fatigue testing of spot welded jointsISO 15609-
39、5, Specification and qualification of welding procedures for metallic materials Welding procedure specification Part 5: Resistance weldingISO 15614-12, Specification and qualification of welding procedures for metallic materials Welding procedure test Part 12: Spot, seam and projection weldingISO 15
40、614-13, Specification and qualification of welding procedures for metallic materials Welding procedure test Part 13: Upset (resistance butt) and flash weldingISO 16432, Resistance welding Procedure for projection welding of uncoated and coated low carbon steels using embossed projection(s)ISO 17653,
41、 Resistance welding Destructive tests on welds in metallic materials Torsion test of resistance spot weldsISO 17654, Resistance welding Destructive tests of welds Pressure test of resistance seam weldsISO 17657-2, Resistance welding Welding current measurement for resistance welding Part 2: Welding
42、current meter with current sensing coilISO 17677-1, Resistance welding Vocabulary Part 1: Spot, projection and seam weldingISO 18592, Resistance welding Destructive testing of welds Method for the fatigue testing of multi-spot-welded specimensISO/TR 581:2005, Weldability Metallic materials General p
43、rinciples3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 17677-1, ISO 669, ISO/TR 581:2005, and the following apply.3.1weldabilitycapacity of the component to be welded under the imposed fabrication conditions into a specific suitability designed stru
44、cture and to perform satisfactorily in the intended service3.2welding current rangewelding current domain allowing the production of spot welds without expulsion and of a diameter equal or more than a pre-determined value under constant machine settings2 ISO 2015 All rights reservedBS EN ISO 18278-1
45、:2015ISO 18278-1:2015(E)4 Weldability4.1 Weldability of a component4.1.1 GeneralWeldability of a component is governed by three factors; material, design, and production (see Figure 1).Figure 1 Weldability4.1.2 Metallurgical weldabilityThe less the factors governed by the material have to be taken i
46、nto account when determining the welding procedure for a given construction, the better is the metallurgical weldability of a material group.The ease by which a material can be welded determines its metallurgical weldability.4.1.3 Operative weldabilityOperative weldability exists for a welding proce
47、dure if the welds envisaged for a particular construction can be made properly under the chosen conditions of production.The less the factors governed by the welding procedure have to be taken into account in designing a construction for a specific material, the better is the operative weldability o
48、f a procedure intended for a specific structure or component.4.1.4 Constructional weldabilityConstructional weldability exists in a construction if the material concerned and the component remain capable of functioning under the envisaged operating conditions by virtue of their design.The less the f
49、actors governed by the design have to be taken into account when selecting the material for a specific welding procedure, the greater is the constructional weldability of a specific structure or component.4.2 Criteria for the evaluation of weldabilityWeldabilty in resistance welding requires the ability to make a weld in the first place, the ability to continue making welds, and the ability of the weld to withstand the imposed service stresses. ISO 2015 All rights reser
