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1、BRITISH STANDARD BS EN ISO 14373:2007 Resistance welding Procedure for spot welding of uncoated and coated low carbon steels The European Standard EN ISO 14373:2007 has the status of a British Standard ICS 25.160.10 ? Licensed Copy: London South Bank University, London South Bank University, Wed Aug
2、 08 03:57:18 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN ISO 14373:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2007 BSI 2007 ISBN 978 0 580 57941 7 National foreword This British Standard is the UK implementation of EN I
3、SO 14373:2007. It is identical with ISO 14373:2006. The UK participation in its preparation was entrusted to Technical Committee WEE/29, Resistance welding. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include
4、 all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank U
5、niversity, Wed Aug 08 03:57:18 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14373 June 2007 ICS 25.160.10 English Version Resistance welding - Procedure for spot welding of uncoated and coated low carbon steels (ISO 14373:2006) Soudage par rsist
6、ance - Mode opratoire pour le soudage par points des aciers bas carbone revtus et non revtus (ISO 14373:2006) Widerstandsschweien - Verfahren zum Punktschweien von niedriglegierten Sthlen mit oder ohne metallischem berzug (ISO 14373:2006) This European Standard was approved by CEN on 19 May 2007. CE
7、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
8、lication to the CEN 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 Management Centre
9、 has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
10、 Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CENAll rights of exploitation in any form and by any
11、 means reserved worldwide for CEN national Members. Ref. No. EN ISO 14373:2007: E Licensed Copy: London South Bank University, London South Bank University, Wed Aug 08 03:57:18 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Foreword The text of ISO 14373:2006 has been prepared by IIW, International Inst
12、itute of Welding, and has been taken over as EN ISO 14373:2007 by Technical Committee CEN/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
13、December 2007, and conflicting national standards shall be withdrawn at the latest by December 2007. 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, Cyprus, C
14、zech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 14373:2006
15、has been approved by CEN as a EN ISO 14373:2007 without any modification. EN ISO 14373:2007 Licensed Copy: London South Bank University, London South Bank University, Wed Aug 08 03:57:18 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Reference number ISO 14373:2006(E) INTERNATIONAL STANDARD ISO 14373 Fi
16、rst edition 2006-08-15 Resistance welding Procedure for spot welding of uncoated and coated low carbon steels Soudage par rsistance Mode opratoire pour le soudage par points des aciers bas carbone revtus et non revtus EN ISO 14373:2007 Licensed Copy: London South Bank University, London South Bank U
17、niversity, Wed Aug 08 03:57:18 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ii Licensed Copy: London South Bank University, London South Bank University, Wed Aug 08 03:57:18 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iii Contents Page Foreword iv 1 Scope 1 2 Normative references2 3 Terms and definitio
18、ns .2 4 Symbols and abbreviated terms 4 5 Material .4 5.1 Form4 5.2 Steel grades4 6 Surface conditions.5 7 Edge conditions, form of component, and weld spacing5 8 Electrodes.5 8.1 Materials .5 8.2 Dimensions.5 8.3 Cooling of electrodes7 9 Weld assessment.8 9.1 General8 9.2 Weldability tests.8 9.3 Pr
19、oduction tests.8 9.4 Frequency of testing .8 10 Weld quality requirements9 10.1 Weld diameter 9 10.2 Weld penetration and indentation9 10.3 Weld fracture mode .9 10.4 Weld shear strength 9 10.5 Weld appearance .10 11 Multi-weld arrays10 Annex A (informative) Recommendations for spot welding equipmen
20、t12 Annex B (informative) Typical spot welding conditions .13 Annex C (informative) Partial list of steel types applicable to this International Standard.15 Bibliography16 EN ISO 14373:2007 Licensed Copy: London South Bank University, London South Bank University, Wed Aug 08 03:57:18 GMT+00:00 2007,
21、 Uncontrolled Copy, (c) BSI iv 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 carried out through ISO technical committees. Each member body intere
22、sted 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 International Electrotechnical
23、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 International Standards. Draft International Standards adopted by the tec
24、hnical 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 elements of this document may be the subject of patent rights. ISO
25、 shall not be held responsible for identifying any or all such patent rights. ISO 14373 was prepared by the International Institute of Welding, recognized as an international standardizing body in the field of welding in accordance with Council Resolution 42/1999. Requests for official interpretatio
26、ns of any aspect of this International Standard should be directed to the ISO Central Secretariat, who will forward them to the IIW Secretariat for an official response. EN ISO 14373:2007 Licensed Copy: London South Bank University, London South Bank University, Wed Aug 08 03:57:18 GMT+00:00 2007, U
27、ncontrolled Copy, (c) BSI 1 Resistance welding Procedure for spot welding of uncoated and coated low carbon steels 1 Scope This International Standard specifies requirements for resistance spot welding in the fabrication of assemblies of uncoated and metallic coated low carbon steel, comprising two
28、or three sheets of metal, where the maximum single sheet thickness of components to be welded is within the range 0,4 mm to 3 mm, for the following materials: uncoated steels; hot-dip zinc or iron-zinc alloy (galvannealed) coated steel; electrolytic zinc, zinc-iron, or zinc-nickel coated steel; alum
29、inium coated steel; zinc-aluminium coated steel. This International Standard is applicable to the welding of sheets of the same or dissimilar thickness, where the thickness ratio is less than or equal to 3:1. It applies to the welding of three thicknesses, where the total thickness is less than or e
30、qual to 9 mm. Welding with the following types of equipment is within the scope of this International Standard: a) pedestal welding equipment; b) gun welders; c) automatic welding equipment where the components are fed by robots or automatic feeding equipment; d) multi welders; e) robotic welders. I
31、nformation on appropriate welding equipment is given in Annex A, and information on spot welding conditions is given in Annex B. This information is provided for guidance only. Depending on the service conditions of the fabrication, the type of welding equipment, the characteristics of the secondary
32、 circuit, the electrode material, and the shape, it is possible that certain modifications are necessary. In such cases, further information may be obtained from the relevant application standard, where one exists. The welding of organic coated or primer coated steels is not within the scope of this
33、 International Standard. EN ISO 14373:2007 Licensed Copy: London South Bank University, London South Bank University, Wed Aug 08 03:57:18 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 2 2 Normative references The following referenced documents are indispensable for the application of this document. For
34、 dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 669, Resistance welding Resistance welding equipment Mechanical and electrical requirements ISO 5182, Welding Materials for resistance weld
35、ing electrodes and ancillary equipment ISO 10447, Welding Peel and chisel testing of resistance spot, projection and seam welds ISO 14270, Specimen dimensions and procedure for mechanized peel testing resistance spot, seam and embossed projection welds ISO 14329, Resistance welding Destructive tests
36、 of welds Failure types and geometric measurements for resistance spot, seam and projection welds ISO 15609-5, Specification and qualification of welding procedures for metallic materials Welding procedure specification Part 5: Resistance welding ISO 15614-12, Specification and qualification of weld
37、ing procedures for metallic materials Welding procedure test Part 12: Spot, seam and projection welding 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 669, ISO 14329, and the following apply. 3.1 corona bond zone area of the weld at the faying surfa
38、ces in which solid phase bonding has occurred See Figure 2. 3.2 cross-tension test test to determine the load-carrying capability of a spot welded joint subjected to cross tension loading 3.3 shear test tensile shear test test to determine the load-carrying capability of a spot welded joint subjecte
39、d to shear tension loading 3.4 weld nugget lenticular zone in a resistance weld, where metal from both (all) sheets has melted and re-solidified 3.5 weld pitch centre-to-centre distance between adjacent spot welds EN ISO 14373:2007 Licensed Copy: London South Bank University, London South Bank Unive
40、rsity, Wed Aug 08 03:57:18 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 a) Symmetrical a b) Asymmetrical a c) Partial b Key 1 interfacial fracture a d = dp = (d1 + d2)/2. b d = (d1 + d2)/2 and dp = (d2 + d3)/2. Figure 1 Measuring of weld size for weld with plug (slug) failure EN ISO 14373:2007 Licen
41、sed Copy: London South Bank University, London South Bank University, Wed Aug 08 03:57:18 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 4 Key 1 sheared nugget a Diameter of the corona. 2 corona bond zone b Diameter of the nugget. 3 nugget c d1 or d2. 4 rough fracture zone Figure 2 Measuring of weld siz
42、e for weld with interface failure, d 0,4 u 0,6 4 0,9 to 1,1 5 to 7 4 to 6 1,3 to 1,8 4 to 5 5 to 8 0,6 u 0,8 4 1,2 to 1,3 7 to 10 5 to 7 1,7 to 2,0 6 to 8 6 to 9 0,8 u 1,0 5 1,4 to 1,5 9 to 12 6 to 8 1,9 to 2,6 7 to 10 7 to 10 1,0 u 1,2 5 1,6 to 1,8 11 to 15 7 to 9 2,5 to 3,2 8 to 12 8 to 12 1,2 u 1
43、,6 6 1,9 to 2,1 14 to 18 8 to 11 3,0 to 4,0 9 to 13 10 to 13 1,6 u 2,0 7 2,6 to 2,9 18 to 22 9 to 13 3,9 to 5,2 10 to 14 12 to 15 2,0 u 2,5 8 3,4 to 3,7 22 to 28 10 to 15 5,0 to 6,2 12 to 16 14 to 18 2,5 u 3,0 9 4,4 to 4,7 28 to 35 12 to 17 6,0 to 7,5 15 to 20 17 to 20 a 1 cycle = 0,02 s. EN ISO 143
44、73:2007 Licensed Copy: London South Bank University, London South Bank University, Wed Aug 08 03:57:18 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 14 Table B.2 Guidelines for spot welding conditions for zinc coated steels of thickness 0,4 mm to 3,0 mm Welding parameters Hot-dip zinc a Electrolyticall
45、y deposited zinc b Single sheet thickness Electrode tip diameter Force Weld time cycles c Current Force Weld time cycles c Current mm mm mm kN kA kN kA 0,4 u 0,6 4 1,5 to 2,0 6 to 8 7 to 9 1,5 to 2,0 6 to 8 6 to 8 0,6 u 0,8 4 1,9 to 2,0 8 to 10 8 to 10 1,9 to 2,2 8 to 10 7 to 9 0,8 u 1,0 5 2,2 to 2,
46、9 9 to 12 9 to 11 2,2 to 2,9 9 to 12 8 to 10 1,0 u 1,2 5 2,8 to 3,6 10 to 13 10 to 13 2,8 to 3,6 10 to 13 9 to 13 1,2 u 1,6 6 3,4 to 4,5 11 to 15 14 to 16 3,4 to 4,5 11 to 15 12 to 15 1,6 u 2,0 7 4,4 to 5,5 12 to 16 18 to 21 4,4 to 5,5 12 to 16 14 to 17 2,0 u 2,5 8 5,4 to 6,8 14 to 18 22 to 26 5,4 t
47、o 6,8 14 to 18 17 to 22 2,5 u 3,0 9 6,6 to 8,0 17 to 21 26 to 30 6,6 to 8,0 17 to 21 19 to 24 a Applicable for coating thicknesses G275 ( 20 m single side). b Applicable for coating thicknesses 7 m single side. c 1 cycle = 0,02 s. Table B.3 Guidelines for spot welding of double-sided iron-zinc alloy
48、 and zinc-nickel alloy coated steels of sheet thickness 0,4 mm to 3,0 mm Welding parameters Single sheet thickness Electrode tip diameter Force Weld time cycles a Current mm mm mm kN kA 0,4 u 0,6 4 1,4 to 1,9 4 to 6 6,0 to 8,5 0,6 u 0,8 4 1,8 to 2,1 6 to 8 7,0 to 9,5 0,8 u 1,0 5 2,1 to 2,8 7 to 10 8
49、,0 to 10,5 1,0 u 1,2 5 2,7 to 3,4 8 to 12 9,0 to 12 1,2 u 1,6 6 3,2 to 4,3 9 to 13 11,0 to 14 1,6 u 2,0 7 4,2 to 5,3 10 to 14 13,0 to 16,5 2,0 u 2,5 8 5,2 to 6,5 12 to 16 16,0 to 21,0 2,5 u 3,0 9 6,4 to 7,8 15 to 20 18,0 to 23 a 1 cycle = 0,02 s. EN ISO 14373:2007 Licensed Copy: London South Bank University, London South Bank University, Wed Aug 08 03:57:18 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 15 Annex C (informa