SIST EN ISO 18278-1:2015

Resistance welding - Weldability - Part 1: Assessment of weldability for resistance spot, seam and projection welding of metallic materials (ISO 18278-1:2015)

This 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 standards 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 to
a) compare 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 welding schedules including pulse welding, current stepping etc. on weldability,
and/or
d) 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.

Widerstandsschweißen - Schweißeignung - Teil 1: Allgemeine Anforderungen an die Bewertung der Schweißeignung von Widerstandspunkt , Rollennaht- und Buckelschweißungen von metallischen Werkstoffen (ISO 18278-1:2015)

Dieses Dokument legt Verfahren für das Bewerten der allgemeinen Schweißeignung für das Widerstands-schweißen unbeschichteter und beschichteter Metalle fest.
Voraussetzung für die Anwendung dieser Norm und anderer, mit ihr in Zusammenhang stehende Normen ist, dass geeignet ausgebildete, qualifizierte und erfahrene Schweißer eingesetzt werden.
Für die Qualität der geschweißten Konstruktionen sollte der jeweils zutreffende Teil von ISO 14554 angewendet werden. Zur Festlegung der Schweißverfahren sollten die in ISO 15609 5 angegebenen Anleitungen befolgt werden.
Die Prüfungen dienen folgenden Zwecken:
a)   dem Vergleichen der metallurgischen Schweißeignung der unterschiedlichen Metalle und/oder
b)   dem Bewerten der Schweißeignung unterschiedlich gestalteter Bauteile, z. B. der maßlichen Konfiguration, der Schichtung der zu schweißenden Teile, der geometrischen Gestalt des Schweißbuckels usw. und/oder
c)   das Untersuchen des Einflusses von Veränderungen der Schweißparameter auf die Schweißeignung, wie Schweißstrom, Schweißzeit, Elektrodenkraft oder komplizierte Schweißprogramme einschließlich Mehrimpulsschweißen, Stepperfunktion für den Schweißstrom usw. und/oder
d)   dem Vergleichen der Leistungsfähigkeit der Widerstandsschweißeinrichtung.
Die genauen Details des anzuwendenden Prüfverfahrens hängen davon ab, welcher Aspekt der Punkte a) bis d) in Bezug auf das erhaltene Schweißergebnis zu bewerten ist.

Soudage par résistance - Soudabilité - Partie 1: Évaluation de la soudabilité pour le soudage par résistance par points, à la molette et par bossages des matériaux métalliques (ISO 18278-1:2015)

ISO 18278-1:2015 définit les procédures à suivre pour évaluer la soudabilité générique pour le soudage par résistance des métaux revêtus et non revêtus.
Il est attendu que pour la présente norme et les normes associées, leur application soit confiée à un personnel dûment formé, qualifié et ayant de l'expérience.
En ce qui concerne la qualité des structures soudées, la partie correspondante de l'ISO 14554 s'applique. Pour la spécification des modes opératoires, il convient de suivre des lignes directrices telles que l'ISO 15609-5.
L'objectif des essais est de:
a)    comparer la soudabilité métallurgique de différents métaux,
b)    évaluer la soudabilité des différentes configurations d'assemblage, telles que la configuration dimensionnelle, l'empilement de tôles, la géométrie du bossage, etc.,
c)    étudier les effets des changements sur les paramètres de soudage tels que le courant de soudage, le temps de soudage, l'effort de soudage ou les programmes de soudage complexes incluant le soudage avec pulsations, l'incrémentation du courant de soudage, etc.,
d)    comparer les performances des matériels pour le soudage par résistance.
Les détails précis de la procédure d'essai à utiliser dépendent de la nature exacte des points a) à d) à évaluer en rapport avec le résultat obtenu en soudage.

Uporovno varjenje - Varivost - 1. del: Ocenjevanje varivosti pri uporovnem točkovnem, kolutnem in bradavičnem varjenju kovinskih materialov (ISO 18278-1:2015)

General Information

• Status: Withdrawn
• Public Enquiry End Date: 31-Dec-2013
• Publication Date: 04-Jun-2015
• Withdrawal Date: 16-Aug-2022
• ICS: 25.160.10 - Welding processes
• Technical Committee: VAR - Welding
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 03-Aug-2022
• Due Date: 26-Aug-2022
• Completion Date: 17-Aug-2022
• Ref Project: EN ISO 18278-1:2015 - 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)

Relations

• Replaced By: SIST EN ISO 18278-1:2022 - Resistance welding - Weldability - Part 1: General requirements for the evaluation of weldability for resistance spot, seam and projection welding of metallic materials (ISO 18278-1:2022)
• Effective Date: 01-Sep-2022
• Replaces: SIST EN ISO 18278-1:2005 - Resistance welding - Weldability - Part 1: Assessment of weldability for resistance spot, seam and projection welding of metallic materials (ISO 18278-1:2004)
• Effective Date: 01-Jul-2015

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 18278-1:2015
01-julij-2015
1DGRPHãþD
SIST EN ISO 18278-1:2005
8SRURYQRYDUMHQMH9DULYRVWGHO2FHQMHYDQMHYDULYRVWLSULXSRURYQHP
WRþNRYQHPNROXWQHPLQEUDGDYLþQHPYDUMHQMXNRYLQVNLKPDWHULDORY,62

Resistance welding - Weldability - Part 1: Assessment of weldability for resistance spot,
seam and projection welding of metallic materials (ISO 18278-1:2015)
Widerstandsschweißen - Schweißeignung - Teil 1: Allgemeine Anforderungen an die
Bewertung der Schweißeignung von Widerstandspunkt , Rollennaht- und
Buckelschweißungen von metallischen Werkstoffen (ISO 18278-1:2015)
Soudage par résistance - Soudabilité - Partie 1: Évaluation de la soudabilité pour le
soudage par résistance par points, à la molette et par bossages des matériaux
métalliques (ISO 18278-1:2015)
Ta slovenski standard je istoveten z: EN ISO 18278-1:2015
ICS:
25.160.10 Varilni postopki in varjenje Welding processes
SIST EN ISO 18278-1:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 18278-1:2015

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SIST EN ISO 18278-1:2015

EUROPEAN STANDARD
EN ISO 18278-1

NORME EUROPÉENNE

EUROPÄISCHE NORM
April 2015
ICS 25.160.01 Supersedes EN ISO 18278-1:2004
English 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 résistance - Soudabilité - Partie 1: Exigences Widerstandsschweißen - Schweißeignung - Teil 1:
générales pour l'évaluation de la soudabilité pour le Bewerten der Schweißeignung zum Widerstandspunkt-,
soudage par résistance par points, à la molette et par Rollennaht- und Buckelschweißen von metallischen
bossages des matériaux métalliques (ISO 18278-1:2015) Werkstoffen (ISO 18278-1:2015)
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 bibliographical 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 responsibility 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 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
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR 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 Ref. No. EN ISO 18278-1:2015 E
worldwide for CEN national Members.

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SIST EN ISO 18278-1:2015
EN ISO 18278-1:2015 (E)
Contents Page
Foreword .3

2

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SIST EN ISO 18278-1:2015
EN ISO 18278-1:2015 (E)
Foreword
This 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 national 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 patent
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 European 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, Slovenia, 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.
3

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SIST EN ISO 18278-1:2015

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SIST EN ISO 18278-1:2015
INTERNATIONAL ISO
STANDARD 18278-1
Second edition
2015-04-15
Resistance welding — Weldability —
Part 1:
General requirements for the
evaluation of weldability for
resistance spot, seam and projection
welding of metallic materials
Soudage par résistance — Soudabilité —
Partie 1: Exigences générales pour l’évaluation de la soudabilité pour
le soudage par résistance par points, à la molette et par bossages des
matériaux métalliques
Reference number
ISO 18278-1:2015(E)
©
ISO 2015

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SIST EN ISO 18278-1:2015
ISO 18278-1:2015(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2015
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2015 – All rights reserved

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SIST EN ISO 18278-1:2015
ISO 18278-1:2015(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Weldability . 3
4.1 Weldability of a component . 3
4.1.1 General. 3
4.1.2 Metallurgical weldability . 3
4.1.3 Operative weldability . 3
4.1.4 Constructional weldability . 3
4.2 Criteria for the evaluation of weldability . 3
5 Preparation of welding equipment . 4
5.1 Welding machine . 4
5.2 Welding electrodes . 4
5.2.1 General. 4
5.2.2 Spot welding . 4
5.2.3 Seam welding . 4
5.2.4 Projection welding . 5
5.3 Measurement of parameters . 5
5.3.1 Welding current . 5
5.3.2 Electrode force . 5
6 Test procedures . 5
6.1 General . 5
6.2 Basic test procedures . 5
6.2.1 Essential variables . 5
6.2.2 Welding current range test . 6
6.2.3 Electrode life test . 6
6.3 Evaluation of weld properties . 7
6.3.1 General. 7
6.3.2 Shop floor tests . 7
6.3.3 Tensile shear testing . 7
6.3.4 Mechanized peel testing . 7
6.3.5 Cross tension testing . 7
6.3.6 Macro-sections and hardness test . 8
6.3.7 Further weld properties . 8
7 Test report . 8
7.1 General . 8
7.2 Welding current range test . 8
7.3 Electrode life test . 8
Annex A (informative) How to evaluate the mass and friction of the welding head .10
Bibliography .11
© ISO 2015 – All rights reserved iii

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SIST EN ISO 18278-1:2015
ISO 18278-1:2015(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 on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s 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 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:
— 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 welding
iv © ISO 2015 – All rights reserved

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SIST EN ISO 18278-1:2015
INTERNATIONAL STANDARD ISO 18278-1:2015(E)
Resistance welding — Weldability —
Part 1:
General requirements for the evaluation of weldability for
resistance spot, seam and projection welding of metallic
materials
1 Scope
This 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 standards 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 to
a) compare 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 welding schedules including pulse welding, current stepping etc. on weldability,
and/or
d) 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 Normative references
The 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 amendments) applies.
ISO 669, Resistance welding — Resistance welding equipment — Mechanical and electrical requirements
ISO 693, Dimensions of seam welding wheel blanks
ISO 5182, Resistance welding — Materials for electrodes and ancillary equipment
ISO 5821, Resistance welding — Spot welding electrode caps
ISO 8167, Projections for resistance welding
ISO 10447, Resistance welding — Peel and chisel testing of resistance spot and projection welds
ISO 14270, Resistance welding — Destructive testing of welds — Specimen dimensions and procedure for
mechanized peel testing resistance spot, seam and embossed projection welds
© ISO 2015 – All rights reserved 1

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SIST EN ISO 18278-1:2015
ISO 18278-1:2015(E)

ISO 14271, Resistance welding — Vickers hardness testing (low-force and microhardness)
...