ISO/PRF 15614-12
(Main)Specification and qualification of welding procedures for metallic materials -- Welding procedure test
Specification and qualification of welding procedures for metallic materials -- Welding procedure test
Descriptif et qualification d'un mode opératoire de soudage pour les matériaux métalliques -- Épreuve de qualification d'un mode opératoire de soudage
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INTERNATIONAL ISO
STANDARD 15614-12
Third edition
Specification and qualification of
welding procedures for metallic
materials — Welding procedure test —
Part 12:
Spot, seam and projection welding
Descriptif et qualification d'un mode opératoire de soudage pour
les matériaux métalliques — Épreuve de qualification d'un mode
opératoire de soudage —
Partie 12: Soudage par points, à la molette et par bossages
PROOF/ÉPREUVE
Reference number
ISO 15614-12:2021(E)
ISO 2021
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ISO 15614-12:2021(E)
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ii PROOF/ÉPREUVE © ISO 2021 – All rights reserved
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ISO 15614-12:2021(E)
Contents Page
Foreword ........................................................................................................................................................................................................................................iv
Introduction ..................................................................................................................................................................................................................................v
1 Scope .................................................................................................................................................................................................................................1
2 Normative references ......................................................................................................................................................................................1
3 Terms and definitions .....................................................................................................................................................................................2
4 Preliminary welding procedure specification (pWPS) .................................................................................................2
5 Welding procedure test .................................................................................................................................................................................2
6 Test piece ......................................................................................................................................................................................................................2
6.1 General ........................................................................................................................................................................................................... 2
6.2 Shape and dimensions of test pieces and test specimens for destructive testing ........................ 2
6.2.1 General...................................................................................................................................................................................... 2
6.2.2 Macrosection ....................................................................................................................................................................... 2
6.3 Welding of components, test pieces or test specimens ........................................................................................ 3
7 Examination and testing ...............................................................................................................................................................................3
7.1 Extent of testing ..................................................................................................................................................................................... 3
7.2 Location and cutting of test specimens ............................................................................................................................. 5
7.3 Visual testing ............................................................................................................................................................................................ 5
7.4 Re-testing ..................................................................................................................................................................................................... 5
8 Range of qualification .....................................................................................................................................................................................5
8.1 General ........................................................................................................................................................................................................... 5
8.2 Related to the manufacturer ....................................................................................................................................................... 5
8.3 Related to the material ..................................................................................................................................................................... 5
8.4 Common to all welding procedures ...................................................................................................................................... 6
8.4.1 Welding process ............................................................................................................................................................... 6
8.4.2 Type of current .................................................................................................................................................................. 6
8.4.3 Welding cycle ...................................................................................................................................................................... 6
8.4.4 Pre-/Postweld heat treatment ............................................................................................................................. 6
8.4.5 Type of weld equipment ............................................................................................................................................ 6
8.4.6 Welding electrodes ........................................................................................................................................... .............. 6
9 Welding procedure qualification record form (WPQR) ...............................................................................................6
Bibliography ................................................................................................................................................................................................................................8
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ISO 15614-12:2021(E)
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 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 International 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
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 (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 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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes,
Subcommittee SC 6, Resistance welding and allied mechanical joining, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 121, Welding and allied processes,
in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 15614-12:2014), which has been
technically revised.The main changes compared to the previous edition are as follows:
— Clause 2 and the Bibliography have been updated;
— Clauses 7 and 8 have been updated;
— Table 1 has been modified;
— ISO 14732 has been added to the Bibliography and has replaced EN 1418.
A list of all parts in the ISO 13919 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.Official interpretations of ISO/TC 44 documents, where they exist, are available from this page: https://
committee .iso .org/ sites/ tc44/ home/ interpretation .html.iv PROOF/ÉPREUVE © ISO 2021 – All rights reserved
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ISO 15614-12:2021(E)
Introduction
It is intended that all new welding procedure qualifications be carried out in accordance with this
document from the date of its issue.However, this document does not invalidate previous welding procedure qualifications made to other
standards or specifications, provided the intent of its technical requirements is satisfied and the
previous welding procedure qualifications are relevant to the application and production work on
which they are to be employed.Also, where additional tests need to be carried out to make the qualification technically equivalent, it is
necessary only to perform the additional tests on a test piece made in accordance with this document.
Details on the ISO 15614 series on welding are given in ISO 15607:2019, Annex A.© ISO 2021 – All rights reserved PROOF/ÉPREUVE v
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INTERNATIONAL STANDARD ISO 15614-12:2021(E)
Specification and qualification of welding procedures for
metallic materials — Welding procedure test —
Part 12:
Spot, seam and projection welding
1 Scope
This document specifies the tests which can be used for qualification of welding procedure specifications
for spot, seam, and projection welding processes.NOTE The procedures are written for embossed projection welding. They can be adapted for solid
projections as well, e.g. nut welding, stud welding. cross wire welding.This document defines the conditions for carrying out tests and the limits of validity of a qualified
welding procedure for all practical welding operations covered by this document.This document covers the following resistance welding processes, as defined in ISO 4063:
— 21 – resistance spot welding;— 211 – indirect spot welding;
— 212 – direct spot welding;
— 22 – resistance seam welding;
— 221 – lap seam welding;
— 222 – mash seam welding;
— 223 – Prep-lap seam welding;
— 224 – Wire seam welding;
— 225 – foil butt-seam welding;
— 226 – seam welding with strip;
— 23 – projection welding;
— 231 – indirect projection welding;
— 232 – direct projection welding.
2 Normative references
The 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 references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 669:2016, Resistance welding — Resistance welding equipment — Mechanical and electrical
requirementsISO 15607:2019, Specification and qualification of welding procedures for metallic materials — General
rules© ISO 2021 – All rights reserved PROOF/ÉPREUVE 1
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ISO 15614-12:2021(E)
ISO 15609-5:2011, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 5: Resistance weldingISO 17653:2012, Resistance welding — Destructive tests on welds in metallic materials — Torsion test of
resistance spot weldsISO 17677-1:2019, Resistance welding — Vocabulary — Part 1: Spot, projection and seam welding
3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 669, ISO 15607 and
ISO 17677-1 apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp— IEC Electropedia: available at http:// www .electropedia .org/
4 Preliminary welding proce
...
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