ISO 7623:2022
(Main)Steel cord conveyor belts - Cord-to-coating bond test - Initial test and after thermal treatment
Steel cord conveyor belts - Cord-to-coating bond test - Initial test and after thermal treatment
This document specifies a method for determining the bond strength of metal cords to their surrounding coating, either in the initial state or after thermal treatment. It applies exclusively to metal-carcass conveyor belts.
Courroies transporteuses à câbles d'acier — Essai d'adhérence des câbles dans l'enrobage — Essai initial et après traitement thermique
Le présent document spécifie une méthode pour la détermination de l´adhérence des câbles métalliques dans l´enrobage, dans son état initial ou après traitement thermique. Il est applicable exclusivement aux courroies transporteuses à carcasse métallique.
General Information
- Status
- Published
- Publication Date
- 07-Nov-2022
- Technical Committee
- ISO/TC 41/SC 3 - Conveyor belts
- Drafting Committee
- ISO/TC 41/SC 3 - Conveyor belts
- Current Stage
- 6060 - International Standard published
- Start Date
- 08-Nov-2022
- Due Date
- 03-Dec-2023
- Completion Date
- 08-Nov-2022
Relations
- Consolidates
ISO 23368:2022 - Anaesthetic and respiratory equipment - Low-flow nasal cannulae for oxygen therapy - Effective Date
- 06-Jun-2022
- Effective Date
- 06-Jun-2022
Overview
ISO 7623:2022 is an international standard that specifies the method for testing the bond strength between steel cords and their surrounding coatings in metal-carcass conveyor belts. This standard defines procedures to evaluate cord-to-coating adhesion both in the belt’s initial manufactured state and after exposure to defined thermal treatment conditions. Published by the International Organization for Standardization (ISO), this fourth edition replaces and updates the previous 2015 version to ensure reliable quality assessment of steel cord conveyor belts under operational stresses.
The bond between steel cords and coatings is critical for the mechanical integrity and durability of conveyor belts used in industries such as mining, manufacturing, and logistics. By standardizing the testing method, ISO 7623:2022 supports manufacturers, quality controllers, and end users in verifying belt performance and extending service life.
Key Topics
Scope and Application
Applies exclusively to metal-carcass conveyor belts with steel cords; focuses on measuring cord-to-coating bond strength before and after thermal treatment.Test Methodology
Requires preparation of belt specimens with specified dimensions and removal of coating and weft layers at test areas. The key measurement involves tensile testing to pull out a steel cord from the coating along its axis.Thermal Treatment Conditions
Thermal aging is simulated by pressing the specimen between heated platens at 145 °C ± 5 °C for 150 minutes under controlled pressure. The test compares bond strength before and after this treatment to assess thermal aging effects.Equipment Requirements
Utilizes a dynamometric tensile testing machine compliant with ISO 7622-2 and a press with heated platens capable of controlled temperature and pressure.Test Environment
Standardized atmosphere conditions set at 23 °C ± 2 °C and 50 % ± 5 % relative humidity, following ISO 18573 guidelines to ensure test repeatability.Result Calculation and Reporting
Tear-out force is recorded for three specimens and averaged. Bond strength is expressed in newtons per millimeter of test length. The test report must include test conditions, belt identification, treatment state, and any deviations from standard parameters.
Applications
ISO 7623:2022 is essential for quality assurance and performance verification in industries utilizing steel cord conveyor belts, including:
Mining and Quarrying – Where conveyor belts are exposed to harsh, thermally variable environments requiring secure cord adhesion to withstand heavy loads and abrasion.
Material Handling and Logistics – Ensuring consistent bond strength improves belt lifespan and reduces downtime in high-throughput conveyor systems.
Manufacturing Industry – Assists belt manufacturers to validate product durability, enhancing customer confidence and compliance with international product standards.
Thermal Aging Assessment – Enables prediction of belt performance after exposure to elevated temperatures, critical for processes involving heat or flame exposure.
By adopting ISO 7623:2022 test methods, industries can optimize conveyor belt selection, reduce maintenance costs, and improve operational safety.
Related Standards
ISO 7622-2: Steel cord conveyor belts - Longitudinal traction test - Part 2: Measurement of tensile strength
Provides the tensile testing machine specifications referenced in ISO 7623:2022 for performing cord-to-coating bond tests.ISO 18573: Conveyor belts - Test atmospheres and conditioning periods
Defines controlled atmospheric conditions for consistent test results in conveyor belt testing, adopted by ISO 7623 for conditioning specimens.ISO 14890: Rubber belts - Conveyor belts - Specification
Discusses general requirements and classifications for conveyor belts, complementary to ISO 7623’s focus on bond testing.CEN/TC 188: Conveyor belts (European Committee for Standardization)
Collaborates with ISO on conveyor belt standardization, ensuring harmonization across international and regional requirements.
Keywords: ISO 7623:2022, steel cord conveyor belts, cord-to-coating bond test, thermal treatment, bond strength, tensile testing, conveyor belt standards, metal-carcass belts, quality control, conveyor belt durability, thermal aging test.
ISO 7623:2022 - Steel cord conveyor belts — Cord-to-coating bond test — Initial test and after thermal treatment Released:8. 11. 2022
ISO 7623:2022 - Steel cord conveyor belts — Cord-to-coating bond test — Initial test and after thermal treatment Released:8. 11. 2022
Frequently Asked Questions
ISO 7623:2022 is a standard published by the International Organization for Standardization (ISO). Its full title is "Steel cord conveyor belts - Cord-to-coating bond test - Initial test and after thermal treatment". This standard covers: This document specifies a method for determining the bond strength of metal cords to their surrounding coating, either in the initial state or after thermal treatment. It applies exclusively to metal-carcass conveyor belts.
This document specifies a method for determining the bond strength of metal cords to their surrounding coating, either in the initial state or after thermal treatment. It applies exclusively to metal-carcass conveyor belts.
ISO 7623:2022 is classified under the following ICS (International Classification for Standards) categories: 53.040.20 - Components for conveyors. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 7623:2022 has the following relationships with other standards: It is inter standard links to ISO 23368:2022, ISO 7623:2015. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase ISO 7623:2022 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of ISO standards.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 7623
Fourth edition
2022-11
Steel cord conveyor belts — Cord-to-
coating bond test — Initial test and
after thermal treatment
Courroies transporteuses à câbles d'acier — Essai d'adhérence des
câbles dans l'enrobage — Essai initial et après traitement thermique
Reference number
© ISO 2022
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
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 1
5.1 Dynamometric tensile testing machine with jaws . 1
5.2 Press. 1
6 Test conditions .2
6.1 General . 2
6.2 Test in the initial state . 2
6.3 Test after thermal treatment . 2
7 Specimens. 2
8 Conditioning . 3
9 Procedure .3
10 Expression of results . 3
11 Test report . 3
iii
Foreword
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 41, Pulleys and belts (including
veebelts), Subcommittee SC 3, Conveyor belts, in collaboration with the European Committee for
Standardization (CEN) Technical Committee CEN/TC
...
NORME ISO
INTERNATIONALE 7623
Quatrième édition
2022-11
Courroies transporteuses à câbles
d'acier — Essai d'adhérence des
câbles dans l'enrobage — Essai initial
et après traitement thermique
Steel cord conveyor belts — Cord-to-coating bond test — Initial test
and after thermal treatment
Numéro de référence
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2022
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, 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, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée 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 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii
Sommaire Page
Avant-propos .iv
1 Domaine d'application .1
2 Références normatives .1
3 Termes et définitions . 1
4 Principe. 1
5 Appareillage . 1
5.1 Machine d’essai de traction dynamométrique avec mâchoires . 1
5.2 Presse . 1
6 Conditions d'essai . 2
6.1 Généralités . 2
6.2 Essai à l’état original. 2
6.3 Essai après traitement thermique . 2
7 Éprouvettes. 2
8 Conditionnement .3
9 Mode opératoire . 3
10 Expression des résultats . 3
11 Rapport d’essai .3
iii
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes
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concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa maintenance
ultérieure sont décrites dans les Directives ISO/IEC, Partie 1. Il convient en particulier de noter les
différents critères d’approbation nécessaires pour les différents types de documents ISO. Le présent
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www.iso.org/avant-propos.html.
Le présent document a été élaboré par le comité technique ISO/TC 41, Poulies et courroies (y compris
les courroies trapézoïdales), sous-comité SC 3, Courroies transporteuses, en collaboration avec le
comité technique CEN/TC 188, Courroies transporteuses, du Comité européen de normalisation (CEN),
conformément à l'accord de coopération technique entre l'ISO et le CEN (Accord de Vienne).
Cette quatrième édition annule et remplace la troisième édition (ISO 7623:2015), qui a fait l’objet d’une
révision technique.
Les principales modifications sont les suivantes:
— ajout de la permission de réduire le revêtement des zones de saisie à l’Article
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