ISO INTERNATIONAL STANDARD 6370-1 First edition 1991-12-01 Vitreous and porcelain enamels Determination of the resistance to abrasion Part 1: Abrasion testing apparatus Emaux vitrifies -- Determination de la resistance a I'abrasion Partie 1: Appareillage d'essai d'abrasion Reference number ISO 6370-1:1991(E) Copyright International Organization for Standardization cing permitted without license from IHS Not for Resale ISO 6370-1:1991(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. 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. so 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 voting. Publication as an Inter- bodies casting a vote. International Standard isO 6370-1 was prepared by Technical Committee ISO/TC 107, Metallic and other inorganic coatings, Sub-Committee SC 6, Vitreous and porcelain enamels. Iso 6370 consists of the following parts, under the general title Vitreous and porcelain enamels -- Determination of the resistance to abrasion: -- Part 1: Abrasion testing apparatus Part 2: Loss in mass after sub-surface abrasion 一 C isO 1991 All rights reserved. No part of this publication may be reproduced or utilized in any form permission in writing from the publisher International Organization for Standardization Case Postale 56 CH-1211 Geneve 20 ·Switzerland Printed in Switzerland ii n for Standardization Not for Resale INTERNATIONAL STANDARD ISO 6370-1:1991(E) Vitreous and porcelain enamels --- Determination of the resistance to abrasion - Part 1: Abrasion testing apparatus The eccentric drive shall operate at a rotational fre- Scope 1 quency of 300 min- ±3min and be provided with a device for checking this frequency. This part of Is0 6370 specifies the requirements for the testing apparatus to be used for the determi- Retaining rings nation of the resistance to abrasion of vitreous and 3.2 porcelain enamel coatings. At least six retaining rings as shown in figure2 are required for the testing apparatus. The retaining ring shall be constructed of steel, cast iron or light metal 2 General description lined with rubber. The opening is used for introduc- ing the abrading charge and shall be able to be The abrasion testing apparatus is composed essen- closed by a rubber stopper. tially of the parts described in 3.1 to 3.4. Figure 1 shows the arrangement of the specimens 3.3 Sealing rings and reference glass plates in the apparatus. At least six sealing rings of 87 mm ± 0,5 mm internal diameter, 10 mm ± 2 mm breadth and Requirements 2 mm ± 0,5 mm thickness, consisting of a non-rigid elastic material (e.g. rubber), are required on the testing apparatus. 3.1 Oscitlating table with drive 3.4 Clamping devices An oscillating tabie of about 10 mm in thickness The clamping device shall press the lower edge of made of steel or light metal, is placed horizontally on an eccentric drive in such a way that during the the retaining ring (3.2) against the sealing ring (3.3) test every point of the oscilating table describes a which retains the specimen or the reference glass horizontal circle of 22 mm ± 1 mm in diameter. The plate on the oscillating table (see 3.1). It shall be oscillating table shall be large enough for testing at possible to loosen the ciamping devices quickly for least three specimens and clamping three reference easy exchange of specimens and reference glass plates on it by means of the retaining rings (3.2) piates. 1 orStandardizatio vided by IHS under Noveproduction or