SIST EN ISO 7590:2018 PDF

Name: SIST EN ISO 7590:2018 — Steel cord conveyor belts - Methods for the determination of total thickness and cover thickness (ISO 7590:2018)
SKU: SIST EN ISO 7590:2018
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Steel cord conveyor belts - Methods for the determination of total thickness and cover thickness (ISO 7590:2018)

Название (английский):

SIST EN ISO 7590:2018

Steel cord conveyor belts - Methods for the determination of total thickness and cover thickness (ISO 7590:2018)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 14
Дата публикации:: 19 сентября 2018 г.
Издание:: ISO 7590:2018
ICS:: 53.040.20

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Описание (английский):

This document specifies three methods for the measurement of total belt thickness and the thickness of covers of steel cord conveyor belts. Methods A1 and A2 (micrometer methods) can be used for all steel cord conveyor belts for the measurement of both total belt thickness and cover thickness. Method B (optical method) is intended for the measurement of cover thickness only. It is not suitable if there is a textile or metal weft, nor if the ends of the steel cords become twisted when cut.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 7590:2018 - Steel cord conveyor belts - Methods for the determination of total thickness and cover thickness (ISO 7590:2018) is a CEN-endorsed international standard (published July 2018) that specifies three validated measurement methods for assessing the total belt thickness and the top/bottom cover thicknesses of steel-cord conveyor belts. This edition supersedes EN ISO 7590:2009 and aligns with ISO 7590:2018.

Key topics and requirements

Scope: Defines three methods for thickness measurement:

Method A1 (micrometer) - for total and cover thickness; uses specimen pieces taken across belt width.
Method A2 (micrometer) - for total and cover thickness; uses full-width specimens with a removed 20 mm top-cover section.
Method B (optical) - for cover thickness only; direct optical measurement on a cut belt end or specimen.

Limitations:

Method B is not suitable when a textile or metal weft is present or if steel cord ends become twisted when cut.

Measurement points:

Belt width ≤ 1 000 mm: measure at 3 equidistant points.
Belt width > 1 000 mm: measure at 5 equidistant points.

Apparatus:

Micrometer (Methods A1/A2): dial gauge, flat feet, circular foot 10 mm diameter, pressure (22 ± 5) kPa, graduations of 0.1 mm.
Optical instrument (Method B): hand-held magnifier with scale 0.1 mm steps, magnification ≥ 8×.

Test specimens:

A1: specimens approx. 150 mm long, width equal to two cord pitches.
A2: specimen ≥ 50 mm long, full belt width.
B: use the visible belt end in situ or specimen ≥ 50 mm long; cord ends must be clean and visible.

Measurement principle:

Total thickness measured directly with micrometer.
Cover thickness measured by either removing covers and subtracting core thickness (A1/A2) or by direct optical measurement (B).

Reporting: Arithmetic mean of measurements (3 or 5 points) expressed in millimetres.

Applications and users

Quality control and acceptance testing of steel cord conveyor belts in mining, bulk handling, quarrying and heavy industry.

Manufacturers and suppliers verifying product specifications and compliance.

Testing laboratories performing standardized thickness / cover assessments.

Procurement, inspection and maintenance teams requiring reproducible measurement procedures for warranty, conformity and performance evaluation.

Related standards

ISO 8094 - referenced for adhesion-strength testing where the same test pieces may be used (method A1).

EN 13827 - referenced where cord position measurement aligns with method A2.

EN ISO 7590:2018 is the accepted CEN version of ISO 7590:2018.

Keywords: EN ISO 7590:2018, steel cord conveyor belts, cover thickness, total thickness, micrometer method, optical method, conveyor belt testing, quality control.

SIST EN ISO 7590:2018 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related standards

Технические детали

ISO 7590:2018

Steel cord conveyor belts — Methods for the determination of total thickness and cover thickness

ISO 7590:2009

Steel cord conveyor belts — Methods for the determination of total thickness and cover thickness

SIST EN ISO 8094:2013

Steel cord conveyor belts - Adhesion strength test of the cover to the core layer (ISO 8094:2013)