SIST EN ISO 7662:2000

Rubber and plastics hoses - Determination of abrasion of lining (ISO 7662:1988)

Specifies a method for determining the abrasion of a hose lining when a certain amount of specified grit is passed through the hose. The method is applicable to rubber and plastics hoses with an internal bore of 20 to 50 mm used for grit blasting, shot blasting and similar operation. The method may be used for comparison of the abrasion resistance of different types of hose.

Gummi- und Kunststoffschläuche - Bestimmung des Abriebs der Innenschicht (ISO 7662:1988)

Diese Internationale Norm legt ein Verfahren zum Bestimmen des Abriebs der Innenschicht eines Schlauches fest, wenn eine bestimmte Menge von vorngeschriebenem Kies durch den Schlauch gegeben wird. Das Verfahren ist auf Gummi- und Kunststoffschläuche mit einem Innendurchmesser von 20 bis 50 mm anwendbar, die für Putzstrahlen mit Strahlreinigen und ähnliche Arbeitsgänge verwendet werden.

Tuyaux en caoutchouc et en plastique - Détermination de l'abrasion du tube du tuyau (ISO 7662:1988)

La présente Norme internationale prescrit une méthode pour la détermination de l'abrasion du tube d'un tuyau lorsque l'on fait passer une certaine quantité de grenaille prescrite dans le tuyau. La méthode est applicable aux tuyaux en caoutchouc ou en plastique utilisés pour le grenaillage ou des utilisations similaires. Elle est applicable aux tuyaux présentant un diamètre intérieur de 20 à 50 mm. La méthode peut être utilisée pour la comparaison de la résistance à l'abrasion de différents types de tuyaux mais elle ne peut être utilisée pour la spécification de l'abrasion maximale dans une norme de tuyau. Il convient de faire les comparaisons sur des tuyaux de même type et mêmes dimensions. Il est souhaitable de ne pas comparer les résultats des essais effectués avec des grenailles de types différents.

Gumene in polimerne cevi - Ugotavljanje obrabe podloge (ISO 7662:1988)

General Information

• Status: Published
• Publication Date: 30-Nov-2000
• ICS: 23.040.70 - Hoses and hose assemblies
• Technical Committee: IPMA - Polimer materials and products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2000
• Due Date: 01-Dec-2000
• Completion Date: 01-Dec-2000
• Ref Project: EN ISO 7662:1996 - Rubber and plastics hoses - Determination of abrasion of lining (ISO 7662:1988)

Overview

EN ISO 7662:1996 (ISO 7662:1988) specifies a laboratory method for determining the abrasion of the internal lining of rubber and plastics hoses used in grit blasting, shot blasting and similar operations. The standard measures lining wear by passing a defined amount of abrasive grit through a hose sample and quantifying material loss. It is intended for hoses with an internal bore of 20–50 mm and is intended for comparative testing of abrasion resistance, not for setting absolute maximum-wear specifications.

Key topics and technical requirements

• Test scope: Lining abrasion determination for rubber and plastics hoses (bore 20–50 mm).
• Test specimen: Hose length 1 000 mm ± 50 mm.
• Abrasive (grit): Cast iron grit, 0.7–0.9 mm particle size, 58–60 HRC Rockwell hardness. Other grits allowed only if documented in the test report.
• Grit flow: 42 g/s ± 2 g/s at an air pressure of 250 kPa ± 25 kPa; cabinet contains 25 kg of circulate-able grit.
• Nozzle/ejector: Hard-metal blasting nozzle, internal diameter 10 mm ± 1 mm, cylindrical length 50–100 mm; nozzle inserted 25–50 mm into test piece with centreline alignment within 1°.
• Mounting and geometry: Test piece mounted vertically; bend radius r = 6 × nominal bore; fixture ensures nozzle–hose parallelism.
• Test duration: 400 min ± 1 min blasting.
• Measurements: Mass measured to 0.1 g before and after test; volume loss ΔV calculated from mass change and lining density (expressed in cm³).
• Reporting: Include hose description (lining density), reference to EN ISO 7662, grit type, grit flow, air pressure, test time, loss of volume, observations and test date.
• Comparability: Tests must use the same hose type/size and the same grit; results from different grit types are not comparable.

Applications and users

• Hose manufacturers: validate and compare lining compounds and constructions for abrasion resistance.
• Quality control and inspection labs: routine comparative testing and batch verification for blast-hose products.
• R&D and material suppliers: development and selection of abrasion-resistant elastomers and linings.
• Procurement and specifiers: assess relative performance of hoses intended for abrasive services (grit/shot blasting).
• Test houses: standardized method for delivering consistent, reproducible abrasion data.

Practical value and SEO keywords

This standard provides a repeatable, well-defined abrasion testing method for rubber hoses and plastic hoses used in abrasive services. Keywords: EN ISO 7662:1996, ISO 7662:1988, abrasion testing, hose lining abrasion, grit blasting hose test, abrasion resistance, rubber and plastics hoses, hose testing standard.

Related standards

• Prepared by ISO/TC 45 (Rubber and rubber products). For broader conformity, consult other ISO/CEN standards covering hose construction, materials testing and pneumatic equipment used in abrasive blasting processes.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2000
Gumene in polimerne cevi - Ugotavljanje obrabe podloge (ISO 7662:1988)
Rubber and plastics hoses - Determination of abrasion of lining (ISO 7662:1988)
Gummi- und Kunststoffschläuche - Bestimmung des Abriebs der Innenschicht (ISO
7662:1988)
Tuyaux en caoutchouc et en plastique - Détermination de l'abrasion du tube du tuyau
(ISO 7662:1988)
Ta slovenski standard je istoveten z: EN ISO 7662:1996
ICS:
23.040.70 Gumene cevi in armature Hoses and hose assemblies
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

IS0
INTERNATIONAL STANDARD
First edition
1988-04-15
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION
ORGANISATION INTERNATIONALE DE NORMALISATION
MEXAYHAPOAHAR OPrAHkl3A~MR I-IO CTAH~APTM3A~MM
Rubber and plastics hoses - Determination of
abrasion of lining
Tuyaux en caoutchouc et en plastique - D&termination de l’abrasion du tube du tu yau
Reference number
IS0 7662: 1988 (E)
IS0 7662: 1988 (El
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of preparing International
Standards is normally carried out through IS0 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, govern-
mental and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission (IEC) on all
matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council. They are approved in accordance with IS0 procedures requiring at
least 75 % approval by the member bodies voting.
International Standard IS0 7662 was prepared by Technical Committee ISO/TC 45,
Rubber and rubber products.
0 International Organization for Standardization, 1988
Printed in Switzerland
IS0 7662 : 4988 (E)
INTERNATIONAL STANDARD
Determination of
Rubber and plastics hoses -
abrasion of lining
5 Procedure
1 Scope
This International Standard specifies a method for determining
5.1 Weigh the test piece (clause 4) to the nearest 0,l g.
the abrasion of a hose lining when a certain amount of specified
grit is passed through the hose. The method is applicable to
5.2 Check the flow rate of the grit (clause 31, which shall be
rubber and plastics hoses with an internal bore of 20 to 50 mm
42 g/s + 2 g/s at an air pressure of 250 kPa, by collecting and
used for grit blasting, shot blasting and similar operations.
weighing the amount of grit passing in a given period.
The method may be used for comparison of the abrasion
resistance of different types of hose, but not for specificat
...