1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Conveyor belts - Method for the determination of the tear propagation resistance of textile conveyor beltsBS EN ISO 505:2017National forewordThis British Standard is the UK implementation of EN ISO 505:2017. It is ident
2、ical to ISO 505:2017. It supersedes BS EN ISO 505:2000, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/67, Conveyor belts.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not p
3、urport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 98178 4ICS 53.040.20Compliance with a British Standard cannot confer immunity from legal oblig
4、ations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 505:2017EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 505December 2017I
5、CS 53.040.20 Supersedes EN ISO 505:1999EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN Ref. No. EN ISO 505:2017: EAll rights of exploitation in any form and by any means reserv
6、ed worldwide for CEN national MembersConveyor belts - Method for the determination of the tear propagation resistance of textile conveyor belts (ISO 505:2017)Courroies transporteuses - Mthode de dtermination de la rsistance la propagation dune dchirure dans les courroies transporteuses carcasse text
7、ile (ISO 505:2017)Frdergurte - Verfahren zur Bestimmung der Weiterreifestigkeit von Textil-Frdergurten (ISO 505:2017)This European Standard was approved by CEN on 17 November 2017.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
8、 European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.This European Standard exists in three official ver
9、sions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.CEN members are the national standards bodies of Austria,
10、 Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, S
11、weden, Switzerland, Turkey and United Kingdom.English VersionEN ISO 505:2017 (E)European forewordThis document (EN ISO 505:2017) has been prepared by Technical Committee ISO/TC 41 “Pulleys and belts (including veebelts)” in collaboration with Technical Committee CEN/TC 188 “Conveyor belts” the secre
12、tariat of which is held by SNV.This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2018, and conflicting national standards shall be withdrawn at the latest by June 2018.Attention is drawn to the
13、 possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.This document supersedes EN ISO 505:1999.According to the CEN-CENELEC Internal Regulations, the national standards organization
14、s of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
15、Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Endorsement noticeThe text of ISO 505:2017 has been approved by CEN as EN ISO 505:2017 without any modification.2BS EN ISO 505:2017ISO 505:2017(E)Foreword iv1 Scope .
16、 12 Normative references 13 Terms and definitions . 14 Principle 15 Apparatus . 16 Test pieces . 26.1 Method of sampling 26.2 Shape and dimensions 26.3 Number 26.4 Preparation 27 Method of test 47.1 Conditioning of test pieces . 47.2 Test conditions 47.3 Procedure 47.4 Expression of results 57.5 Tes
17、t report . 5 ISO 2017 All rights reserved iiiContents PageBS EN ISO 505:2017ISO 505:2017(E)ForewordISO (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 ou
18、t 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, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO co
19、llaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different appr
20、oval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the s
21、ubject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any tr
22、ade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adher
23、ence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.This document was prepared by ISO/TC 41, Pulleys and belts (including veebelts), Subcommittee SC 3, Conveyor belts.This fourth edition cancels and repla
24、ces the third edition (ISO 505:1999), which has been technically revised and contains the following changes: the normative references have been updated.iv ISO 2017 All rights reservedBS EN ISO 505:2017Conveyor belts - Method for the determination of the tear propagation resistance of textile conveyo
25、r belts1 ScopeThis document specifies a method of test for the measurement of the propagation resistance of an initial tear in textile conveyor belts, either in full thickness or of the carcass only.This test is intended for application to textile belts in installations where there is a risk of long
26、itudinal tearing.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced doc
27、ument (including any amendments) applies.ISO 6133, Rubber and plastics Analysis of multi-peak traces obtained in determinations of tear strength and adhesion strength3 Terms and definitionsNo terms and definitions are listed in this document.ISO and IEC maintain terminological databases for use in s
28、tandardization at the following addresses: ISO Online browsing platform: available at http:/www.iso.org/obp IEC Electropedia: available at http:/www.electropedia.org/ 4 PrincipleThe test consists in measuring, by means of tensile testing at a given speed, the force necessary to propagate an initial
29、tear made in a test piece.5 ApparatusThe apparatus consists of a dynamometric tensile testing machine with the following essential characteristics:a) the machine shall be chosen so that the forces to be measured come within the upper 90 % range of its full rated capacity;b) the speed of separation o
30、f the jaws shall be capable of being adjusted to (50 10) mm/min;c) the free distance between the jaws shall be capable of being adjusted to at least 300 mm.The machine shall be provided with a device for the graphical recording of the force necessary to continue tearing the test piece.INTERNATIONAL
31、STANDARD ISO 505:2017(E) ISO 2017 All rights reserved 1BS EN ISO 505:2017ISO 505:2017(E)6 Test pieces6.1 Method of samplingTest pieces shall be taken from the sample in the longitudinal direction of the belt and at a minimum distance of 50 mm from the edges of the belt.6.2 Shape and dimensionsShape:
32、 rectangular.Length: 300 mm.Width: (100 1) mm.Thickness: Full belt thickness or without covers.If it is found that weft threads are pulled out of the test piece instead of breaking, the width of the test piece should be increased to 300 mm.6.3 NumberTwo test pieces shall be used: one in sense A and
33、the other in sense B (see Figure 4).6.4 PreparationWhere the test is to be conducted without covers, the covers of the test pieces shall be removed by stripping or by buffing.If there is a breaker ply, strip the corresponding covers without cutting the breaker ply over a width of 20 mm only, i.e. 10
34、 mm on each side of the longitudinal axis of the test piece with the exception of the zone held in the jaws of the machine (see Figure 1).2 ISO 2017 All rights reservedBS EN ISO 505:2017ISO 505:2017(E)Dimensions in millimetresKeyawith coversbcovers removedc50 or 150 (see 6.2)dcut lineFigure 1 Test p
35、ieces with breakerCut the test pieces from the middle of one of their ends over a length of about 100 mm parallel to the length (see Figure 2).Dimensions in millimetresKeyawithout coversb50 or 150 (see 6.2)ccut lineFigure 2 Test pieces without breaker ISO 2017 All rights reserved 3BS EN ISO 505:2017
36、ISO 505:2017(E)If necessary, the width of the test piece (cut-edge) may be adjusted to the gripping width of the jaws by tapering the edges symmetrically on a length at most the same as that of the cut (see Figure 3), with the width at the end of the cut part as great as the width of the jaws permit
37、s.Dimensions in millimetresKeya300 or 100 (see 6.2)bcut linecsee 6.4Figure 3 Tapered test piece7 Method of test7.1 Conditioning of test piecesThe tests shall start not less than 24 h after manufacturing. This time includes 8 h for conditioning. The conditioning atmosphere shall be one or another of
38、the following: temperature (20 2) C with (65 5) % relative humidity; temperature (23 2) C and (50 5)% relative humidity; temperature (27 2) C and (65 5) % relative humidity.The tests shall be conducted in the same atmosphere as used for conditioning.The atmosphere at which the test pieces are condit
39、ioned and tested shall be given in the test report.In the event of dispute, the period of conditioning shall be 72 h.7.2 Test conditionsThe test conditions with regard to temperature and humidity shall be those adopted in 7.1.7.3 ProcedureMount the two cut ends of the test piece in the jaws of the t
40、ensile testing machine either in sense A or in sense B (see Figure 4), so that the inner edges of the cut are situated at the centre of each jaw.4 ISO 2017 All rights reservedBS EN ISO 505:2017ISO 505:2017(E)Fix the speed of separation of the jaws at (50 10) mm/min and continue testing until the tea
41、r has extended for at least 100 mm.Record the tearing forces over the length of the tear by means of a graphical device.7.4 Expression of resultsExamination and analysis of the multi-peak tear resistance test traces shall be in accordance with ISO 6133. The median peak force is defined as the mean t
42、ear resistance.Indicate the resistance of each test piece separately and then indicate the mean value of the resistance of the two test pieces.Dimensions in millimetresKey1 sense A2 sense BFigure 4 Mounting of two cut ends of test piece7.5 Test reportThe test report shall make reference to this docu
43、ment and shall include the following:a) identification of the belt tested;b) the temperature and relative humidity adopted for the conditioning of the test pieces and the tests;c) the results expressed in accordance with 7.4;d) whether the test was conducted with or without covers;e) an account of a
44、ny test or operating conditions not specified in this document. ISO 2017 All rights reserved 5BS EN ISO 505:2017This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated
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