ISO 9312:2013

Resistance welding equipment - Insulated pins for use in electrode back-ups

ISO 9312:2013 specifies the requirements for insulated pins used to pin parts in the secondary circuit of resistance welding equipment, or other live equipment, which need to be insulated from each other.

Équipement de soudage par résistance — Fiches isolées utilisées dans les contre-électrodes

L'ISO 9312:2013 est applicable aux fiches isolées utilisées pour les éléments de fixation dans le circuit secondaire des équipements pour soudage par résistance ou autres éléments sous tension devant être isolées les uns des autres.

General Information

• Status: Published
• Publication Date: 03-Jul-2013
• ICS: 25.160.30 - Welding equipment
• Technical Committee: ISO/TC 44/SC 6 - Resistance welding and allied mechanical joining
• Drafting Committee: ISO/TC 44/SC 6 - Resistance welding and allied mechanical joining
• Current Stage: 9093 - International Standard confirmed
• Start Date: 19-Mar-2024
• Completion Date: 13-Dec-2025

Relations

• Consolidates: ISO 20965:2005 - Plastics - Determination of the transient extensional viscosity of polymer melts
• Effective Date: 06-Jun-2022
• Revises: ISO 9312:1990 - Resistance welding equipment - Insulated pins for use in electrode back-ups
• Effective Date: 28-Jan-2012

Overview

ISO 9312:2013 covers insulated pins used to pin parts in the secondary circuit of resistance welding equipment or other live equipment that must be insulated from each other. This second edition (2013) is a minor revision of the original 1990 publication and provides clear requirements for designation, material selection, dimensions and finishing to ensure safe, repeatable use in electrode back-ups.

The standard is practical and concise: dimensions are given by figure and table references, materials are specified by reference to established insulating laminate types, and tolerances follow general ISO guidance.

Key Topics

• Scope and applicability: Pins intended for the secondary circuit of resistance welding equipment or other live assemblies that require electrical insulation between parts.
• Designation: A clear naming convention is specified. Example: "Fiche isolée ISO 9312 - 8" designates an insulated pin with diameter d = 8 mm.
• Materials: Insulating materials must be rigid fabric laminates in accordance with IEC/CEI 60893-3-4 (PF CC 201 or PF CC 202), providing electrical insulation and mechanical stability.
• Dimensions: Standard dimensions are provided in Figure 1 and Table 1. Typical standardized diameters and associated lengths include:
  • d = 6 mm → l = 30 mm
  • d = 8 mm → l = 40 mm
  • d = 10 mm → l = 50 mm
  • d = 12 mm → l = 60 mm (Table 1 also includes associated detail dimensions such as fillet radii and shoulder lengths.)
• Finishing and tolerances: Dimensional tolerances for unspecified features follow ISO 2768-1 class "moyenne" (ISO 2768-m). Surface state indications refer to ISO 1302 where applicable.

Applications

ISO 9312:2013 is intended to support manufacturers, machine builders, procurement specialists and maintenance personnel involved with resistance welding equipment. Practical uses include:

• Standardizing electrode back-up components to ensure interchangeability and safe electrical isolation.
• Specifying material and dimensional requirements for procurement and quality control.
• Guiding maintenance and replacement of insulated pins used in production welding cells.

Benefits include improved safety, consistent assembly performance, simplified inventory management and clearer supplier specifications.

Related Standards

The standard references and aligns with several international documents that are important for implementation:

• ISO 2768-1 - General tolerances for linear and angular dimensions (class ISO 2768-m)
• ISO 5827 - Resistance welding machines - lower equipment and clamping assemblies (application example)
• IEC/CEI 60893-3-4 - Insulating laminates (PF CC 201 / PF CC 202 material specifications)
• ISO 1302 - Indication of surface texture in technical product documentation

Use ISO 9312:2013 as a concise technical reference when specifying insulated pins for electrode back-ups to ensure conformity, safety and compatibility in resistance welding systems.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 9312
Second edition
2013-07-15
Resistance welding equipment —
Insulated pins for use in electrode
back-ups
Équipement de soudage par résistance — Fiches isolées utilisées dans
les contre-électrodes
Reference number
©
ISO 2013
© ISO 2013
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 2013 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Dimensions . 1
4 Designation . 1
5 Material . 1
6 Finish . 2
7 Application . 2
Bibliography . 3
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
...

NORME ISO
INTERNATIONALE 9312
Deuxième édition
2013-07-15
Équipement de soudage par
résistance — Fiches isolées utilisées
dans les contre-électrodes
Resistance welding equipment — Insulated pins for use in
electrode back-ups
Numéro de référence
©
ISO 2013
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2013
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni utilisée
sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie, l’affichage sur
l’internet ou sur un Intranet, sans autorisation écrite préalable. Les demandes d’autorisation peuvent être adressées à l’ISO à
l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
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
Publié en Suisse
ii © ISO 2013 – Tous droits réservés

Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Références normatives . 1
3 Dimensions . 1
4 Désignation . 1
5 Matériau . 1
6 Finition . 2
7 Application . 2
Bibliographie . 3
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes
nationaux de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est
en général confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l’ISO participent également aux travaux.
L’ISO collabore étroitement avec la Commission électrotechnique internationale (CEI) en ce qui concerne
la normalisation électrotechnique.
Les Normes internationales sont rédigée
...