Resistance welding - Spot welding of aluminium and aluminium alloys - Weldability, welding and testing (ISO 18595:2021)

This document specifies requirements for resistance spot welding in the fabrication of assemblies of aluminium sheet, extrusions (both work- and age-hardening alloys) and/or cast material comprising two or three thicknesses of metal, where the maximum single (sheet) thickness of components to be welded is within the range 0,6 mm to 6 mm.
This document is applicable to the welding of sheets or plates of 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 equal to 9 mm.
Welding with the following types of machines is within the scope of this document:
—     pedestal welding machines;
—     gun welders;
—     automatic welding equipment where the components are fed by robots or automatic feeding equipment;
—     multi-welders;
—     robotic welders.
Information on appropriate welding equipment is given in Annex A and on spot welding conditions in Annex B. The latter are for guidance only and can require modification depending on service conditions of the fabrication, type of welding equipment, characteristics of the secondary circuit, electrode material and geometry.
The welding of coated material, e.g. zinc-coated or anodized material, is outside the scope of this document.

Widerstandsschweißen - Punktschweißen von Aluminium und Aluminiumlegierungen - Schweißeignung, Schweißen und Prüfungen (ISO 18595:2021)

Dieses Dokument legt Anforderungen für das Widerstandspunktschweißen bei der Herstellung von Verbindungen aus Aluminiumblech, Strangpressprofilen (kaltverfestigte und ausgehärtete Legierungen) und/oder Gusswerkstoffen im Zwei- oder Dreilagen-Punktschweißen fest. Dabei liegt die maximale Einzelblechdicke der zu schweißenden Bauteile in einem Bereich von 0,6 mm bis 6 mm.
Dieses Dokument ist für das Schweißen von Blechen oder Platten verschiedener Dicken, wobei das Dickenverhältnis kleiner oder gleich 3:1 ist, anzuwenden. Es ist für das Dreilagenschweißen bis zu einer Gesamtdicke von 9 mm anzuwenden.
Schweißen mit den folgenden Maschinenarten fällt in den Anwendungsbereich dieses Dokuments:
—   Ständerschweißanlagen;
—   Punktschweißgeräte mit Stoßelektrode;
—   Automatik-Schweißeinrichtungen, bei denen die Bauteile von Robotern oder automatischen Vorschubeinrichtungen zugeführt werden;
—   Vielpunktschweißanlagen;
—   Schweißroboter.
Angaben über geeignete Schweißeinrichtungen sind in Anhang A enthalten und über Punktschweiß-bedingungen in Anhang B. Letztere dienen nur zur Information und können Änderungen erforderlich machen, abhängig von den Betriebsbedingungen bei der Herstellung, der Art der Schweißeinrichtung, den Kenndaten des Sekundärstromkreises, dem Elektrodenwerkstoff und der Geometrie.
Schweißen von beschichtetem Werkstoff, z. B. Werkstoffe mit Zinküberzug oder anodisierte Werkstoffe, liegt außerhalb des Anwendungsbereiches dieses Dokuments.

Soudage par résistance - Soudage par points de l'aluminium et des alliages d'aluminium - Soudabilité, soudage et essais (ISO 18595:2021)

Le présent document spécifie les exigences relatives au soudage par résistance par points réalisé pour la fabrication d'assemblages de tôles d'aluminium, de pièces extrudées (alliages écrouis et vieillis) et/ou de pièces moulées comprenant deux ou trois épaisseurs de métal, dont l'épaisseur (de tôle) unique maximale des composants à souder est comprise entre 0,6 mm et 6 mm.
Le présent document s'applique au soudage de tôles ou de plaques d'épaisseurs différentes et dont le rapport entre les épaisseurs est inférieur ou égal à 3:1. Il s'applique au soudage de trois épaisseurs dont l'épaisseur totale est inférieure ou égale à 9 mm.
Le soudage avec les types de machines ci-dessous entre dans le domaine d'application du présent document:
—          machines de soudage avec commande au pied;
—          pinces à souder;
—          matériel de soudage automatique avec lequel les composants sont mis en place par des robots ou par des appareils d'alimentation automatique;
—          machines à souder multipoints;
—          robots de soudage.
Les informations sur le matériel de soudage adéquat sont fournies à l'Annexe A et les informations sur les conditions de soudage par points sont fournies à l'Annexe B. Ces dernières sont communiquées à titre informatif uniquement et peuvent impliquer des modifications selon les conditions de fabrication, le type de matériel de soudage, les caractéristiques du circuit secondaire et du matériau et la forme de l'électrode.
Le soudage de matériaux revêtus (les matériaux galvanisés ou anodisés, par exemple) n'entre pas dans le domaine d'application du présent document.

Uporovno varjenje - Točkovno varjenje aluminija in aluminijevih zlitin - Varivost, varjenje in preskušanje (ISO 18595:2021)

General Information

Status
Published
Publication Date
09-Feb-2021
Withdrawal Date
30-Aug-2021
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
10-Feb-2021
Completion Date
10-Feb-2021

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SLOVENSKI STANDARD
01-maj-2021
Nadomešča:
SIST EN ISO 18595:2008
Uporovno varjenje - Točkovno varjenje aluminija in aluminijevih zlitin - Varivost,
varjenje in preskušanje (ISO 18595:2021)
Resistance welding - Spot welding of aluminium and aluminium alloys - Weldability,
welding and testing (ISO 18595:2021)
Widerstandsschweißen - Punktschweißen von Aluminium und Aluminiumlegierungen -
Schweißeignung, Schweißen und Prüfungen (ISO 18595:2021)
Soudage par résistance - Soudage par points de l'aluminium et des alliages d'aluminium
- Soudabilité, soudage et essais (ISO 18595:2021)
Ta slovenski standard je istoveten z: EN ISO 18595:2021
ICS:
25.160.10 Varilni postopki in varjenje Welding processes
77.120.10 Aluminij in aluminijeve zlitine Aluminium and aluminium
alloys
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 18595
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2021
EUROPÄISCHE NORM
ICS 25.160.10 Supersedes EN ISO 18595:2007
English Version
Resistance welding - Spot welding of aluminium and
aluminium alloys - Weldability, welding and testing (ISO
18595:2021)
Soudage par résistance - Soudage par points de Widerstandsschweißen - Punktschweißen von
l'aluminium et des alliages d'aluminium - Soudabilité, Aluminium und Aluminiumlegierungen -
soudage et essais (ISO 18595:2021) Schweißeignung, Schweißen und Prüfungen (ISO
18595:2021)
This European Standard was approved by CEN on 30 January 2021.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 18595:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 18595:2021) 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 August 2021, and conflicting national standards shall
be withdrawn at the latest by August 2021.
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 rights.
This document supersedes EN ISO 18595:2007.
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,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 18595:2021 has been approved by CEN as EN ISO 18595:2021 without any modification.

INTERNATIONAL ISO
STANDARD 18595
Second edition
2021-01
Resistance welding — Spot welding of
aluminium and aluminium alloys —
Weldability, welding and testing
Soudage par résistance — Soudage par points de l'aluminium et des
alliages d'aluminium — Soudabilité, soudage et essais
Reference number
ISO 18595:2021(E)
©
ISO 2021
ISO 18595:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO 18595:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Material . 2
4.1 Form . 2
4.2 Types of aluminium alloys . 2
5 Surface conditions . 2
6 Edge distance, edge conditions, form of component and weld spacing .2
7 Electrodes . 3
7.1 Materials . 3
7.2 Dimensions . 3
7.3 Cooling electrodes . 4
8 Qualification of welds . 4
8.1 General . 4
8.2 Weldability test . 4
8.3 Pre-production tests . 4
8.4 Routine tests . 4
8.4.1 Type of tests . 4
8.4.2 Frequency of testing . 4
9 Weld quality requirements . 5
9.1 Weld diameter . 5
9.2 Weld dimensions . 5
9.3 Weld fracture mode . 5
9.4 Weld strength . 5
9.5 Weld appearance — Surface condition . 7
10 Multi-weld arrays . 8
Annex A (informative) Typical spot welding conditions .10
Annex B (informative) Non-exhaustive list of aluminium alloys covered by this document.11
Annex C (informative) Typical information to appear on a welding procedure sheet for spot
welding .13
Bibliography .15
ISO 18595:2021(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
...

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