ISO 7267-3-2011 Rubber-covered rollers - Determination of apparent hardness - Part 3 Pusey and Jones method《胶辊表面硬度的测定 第3部分 普西-琼斯法》.pdf
《ISO 7267-3-2011 Rubber-covered rollers - Determination of apparent hardness - Part 3 Pusey and Jones method《胶辊表面硬度的测定 第3部分 普西-琼斯法》.pdf》由会员分享,可在线阅读,更多相关《ISO 7267-3-2011 Rubber-covered rollers - Determination of apparent hardness - Part 3 Pusey and Jones method《胶辊表面硬度的测定 第3部分 普西-琼斯法》.pdf(16页珍藏版)》请在麦多课文档分享上搜索。
1、Rubber-covered rollers Determination of apparent hardness Part 3:Pusey and Jones methodCylindres revtus de caoutchouc Dtermination de la duret apparente Partie 3: Mthode Pusey et Jones ISO 2011Reference numberISO 7267-3:2011(E)Third edition2011-11-01ISO7267-3INTERNATIONAL STANDARDISO 7267-3:2011(E)C
2、OPYRIGHT PROTECTED DOCUMENT ISO 2011All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address bel
3、ow or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in Switzerlandii ISO 2011 All rights reservedISO 7267-3:2011(E) ISO 2011 All rights reserved iiiConte
4、nts PageForeword ivIntroduction v1 Scope 12 Normative references .13 Terms and definitions .14 Time-interval between vulcanization/finished grinding and testing 25 Conditioning and temperature of test 26 Apparatus 27 Calibration .28 Procedure 39 Expression of results .310 Test report .3Annex A (norm
5、ative) Calibration schedule 6Bibliography .8ForewordISO (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. Each member
6、 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 collaborates closely with the International Elect
7、rotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted
8、by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent ri
9、ghts. ISO shall not be held responsible for identifying any or all such patent rights.ISO 7267-3 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 2, Testing and analysis.This third edition cancels and replaces the second edition (ISO 7267-3:2007), of which i
10、t constitutes a minor revision to include an annex specifying a calibration schedule for the apparatus used.ISO 7267 consists of the following parts, under the general title Rubber-covered rollers Determination of apparent hardness: Part 1: IRHD method Part 2: Shore-type durometer method Part 3: Pus
11、ey and Jones methodISO 7267-3:2011(E)iv ISO 2011 All rights reservedIntroductionThe hardness of a roller covering has traditionally been determined on the finished roller, since it is this hardness that is critical to the correct functioning of the roller in its end application. Values of hardness,
12、determined by whichever method is chosen, are therefore dependent not only on the method employed and on the rubber, but also on the diameter of the roller, on the thickness of the covering and, in the case of thin coverings, on the nature of the roller core. For this reason the term “apparent hardn
13、ess” is used to distinguish between the values obtained by the methods described in the various parts of this International Standard and those that would be obtained for the rubber if it was possible to use the standard test methods for standard test pieces forming the subjects of other Internationa
14、l Standards.Since rollers vary considerably in size, construction and end use, and in view of the fact that hardness determinations are made for such different purposes as specification and factory process control, it has not been possible to standardize one test method. Consequently, three methods
15、are described, each capable of standing alone (see Foreword).ISO 7267-3:2011(E) ISO 2011 All rights reserved vINTERNATIONAL STANDARD ISO 7267-3:2011(E)Rubber-covered rollers Determination of apparent hardness Part 3:Pusey and Jones methodWARNING Persons using this part of ISO 7267 should be familiar
16、 with normal laboratory practice. This part of ISO 7267 does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions.
17、IMPORTANT Certain procedures specified in this part of ISO 7267 might involve the use or generation of substances, or the generation of waste, that could constitute a local environmental hazard. Reference should be made to appropriate documentation on safe handling and disposal after use.1 ScopeThis
18、 part of ISO 7267 specifies a method for the determination of the apparent hardness of vulcanized- or thermoplastic-rubber roller covers, expressed as the Pusey and Jones indentation value.The Pusey and Jones plastometer apparatus is used to measure the depth of indentation of an indentor under a sp
19、ecified force into the surface of the rubber. The indentation value should not be confused with hardness as measured by the international rubber hardness test method ISO 481, since in this method the rubber immediately adjacent to the indentor is precompressed. The Pusey and Jones indentation value
20、is an inverse measurement of hardness, i.e. the harder the rubber the lower the Pusey and Jones indentation value.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated referen
21、ces, the latest edition of the referenced document (including any amendments) applies.ISO 18899:2004, Rubber Guide to the calibration of test equipmentISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods3 Terms and definitionsFor the purpose of th
22、is document, the following terms and definitions apply.3.1Pusey and Jones indentation valuedepth of indentation, in hundredths of a millimetre, of a ball 3,175 mm in diameter under a force of 9,8 N ISO 2011 All rights reserved 14 Time-interval between vulcanization/finished grinding and testingTests
23、 shall be carried out not less than 16 h after vulcanization and/or finished grinding and, for arbitration purposes, not less than 72 h after vulcanization (see ISO 23529).5 Conditioning and temperature of testWhere possible, the test shall be carried out at standard laboratory temperature in accord
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