ISO INTERNATIONAL STANDARD 610 Secondedition 1990-08-15 ANsI Infernar Doc Sect High-tensile steel chains (round link) for chain conveyors and coal ploughs Chaines en acier a haute résistance a la traction (a maillons ronds) pour convoyeurs a chaines et rabots a charbon Reference number ISO610:1990(E) pyright International Organization for Standardizatior No reproduct networking permitted without license from IHS ISO.610:1990(E) Foreword IsO(theInternationalOrganizationforStandardization)isaworldwide 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, govern- mental and non-governmental, in liaison with Iso, also take part in the work. Iso collaborates closely with the International Electrotechnica! Commission (IEC) on alt matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Interna tional Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard Iso 610 was prepared by Technical Committee ISO/TC 82,Mining. Thissecond editioncancelsand replacesthefirst edition (IsO 610:1979), of which it constitutes a technical revision. All refer- ences to Is0/R 147 have been replaced by a reference to IsO 7500-1. Annexes A, B, C, D, E and F of this international Standard are for infor- mation only. CISO1990 Atl rights reserved. No part of this publicatlon may be reproduced or utlized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission inwriting from thepublisher. InternationalOrganizationforStandardization Case Postale 56CH-1211Geneve 20·Switzeriand Printed in Switzerland No reproduction or networking permitted without license from IHS Not for Resale ISO 610:1990(E) INTERNATIONAL STANDARD High-tensile steel chains (round link) for chain conveyors and coal ploughs Scope static uniaxial testing machines -- Part 1: Tensile 1 testingmachines. This International Standard specifies the require- ments for a range of high-grade special purpose calibrated, high-tensile, electrically welded, steel chains (round link) for use with machines and Definitions equipment in mining, such as the following: For the purposes of this International Standard, the following definitions apply. a) conveyors, flexible and rigid, of the chain type chain belt conveyors, gate end and stage load. 3.1 size of chain: The nominal diameter d of the ers; stee! wire or bar from which the chain is made. b) coal ploughs, coal cutters and power loaders: 3.2 breaking force: The maximum force which a c) bucket elevators; sample of finished chain withstands during the course of a tensile test to destruction. d) other similar machines used in mines. 3.3 test force: The specified force to which a sam- This International Standard covers a size range from ple of the finished chain has to be subjected without 14 mm to 30 mm. Three grades of quality (B, C and exceeding the stated elongation. D) are specified with regard to the mechanical properties of chain. The values given for grade D in tables 3, 4, 7 and 8 are, however, provisional. 3.4 proof force: The specified force to which, after processing (see 3.6), the whole of the chain has to Chains covered by this International Standard are be subjected without significant permanent defor- not designed for lifting appliances, such as cranes mation or damage. and slings. This force may be re-applied to the whole of the new Normative references his inspector at their discretion. The following standards contain provisions which, 3.5 percentage elongation: The extension ex- through reference in this text, constitute provisions pressed as a