1、Rubber-covered rollers Determination of apparent hardness Part 1: IRHD method BS ISO 72671:2017 BSI Standards Publication WB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06 ISO 2017 Rubber-covered rollers Determination of apparent hardness Part 1: IRHD method Cylindres revtus de caoutchouc Dte
2、rmination de la duret apparente Partie 1: Mthode DIDC INTERNATIONAL STANDARD ISO 7267-1 Fourth edition 2017-08 Reference number ISO 7267-1:2017(E) National foreword This British Standard is the UK implementation of ISO 72671:2017. It supersedes BS ISO 72671:2008, which is withdrawn. The UK participa
3、tion in its preparation was entrusted to Technical Committee PRI/22, Testing and analysis of rubber. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are r
4、esponsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017 ISBN 978 0 580 97191 4 ICS 83.140.99 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the
5、 Standards Policy and Strategy Committee on 30 September 2017. Amendments/corrigenda issued since publication Date Text affected BRITISH STANDARD BS ISO 72671:2017 ISO 2017 Rubber-covered rollers Determination of apparent hardness Part 1: IRHD method Cylindres revtus de caoutchouc Dtermination de la
6、 duret apparente Partie 1: Mthode DIDC INTERNATIONAL STANDARD ISO 7267-1 Fourth edition 2017-08 Reference number ISO 7267-1:2017(E) BS ISO 72671:2017 ISO 7267-1:2017(E)ii ISO 2017 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in Switzerland All rights reserved. Unless otherwis
7、e specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address belo
8、w or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org BS ISO 72671:2017 ISO 7267-1:2017(E)ii ISO 2017 All rights reserved COPYRIGHT PROTECTED
9、DOCUMENT ISO 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior wri
10、tten permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.orgISO 7267-
11、1:2017(E)Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Time int erv al betw een forming and finished grinding , and t esting .1 5 Conditioning and temperature of test 2 6 Apparatus . 2 6.1 Rollers having a radius greater than 50 mm . 2 6.2 Rollers hav
12、ing a radius of 4 mm to 50 mm . 2 6.3 Small rollers having a radius less than 4 mm . 3 7 Procedure. 3 8 Expression of results 4 9 Test report . 4 Bibliography 5 ISO 2017 All rights reserved iii Contents Page BS ISO 72671:2017 ISO 7267-1:2017(E) Foreword ISO (the International Organization for Standa
13、rdization) 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 body interested in a subject for which a technical committee has been established has the right t
14、o 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 Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures us
15、ed to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules
16、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 subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identifi
17、ed 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 trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on
18、 the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/forewor
19、d.html. This document was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 2, Testing and analysis. This fourth edition cancels and replaces the third edition (ISO 7267-1:2008), of which it constitutes a minor revision to update the normative references in Claus
20、e 2. A list of all parts in the ISO 7267 series can be found on the ISO website.iv ISO 2017 All rights reserved BS ISO 72671:2017 ISO 7267-1:2017(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work
21、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, governmental and non-government
22、al, in liaison with ISO, also take part in the work. ISO collaborates 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
23、ISO/IEC Directives, Part 1. In particular the different approval 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 possib
24、ility that some of the elements of this document may be the subject 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
25、patent declarations received (see www.iso.org/patents). Any trade 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
26、 conformity assessment, as well as information about ISOs adherence 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 Technical Committee ISO/TC 45, Rubber and rubber products,
27、 Subcommittee SC 2, Testing and analysis. This fourth edition cancels and replaces the third edition (ISO 7267-1:2008), of which it constitutes a minor revision to update the normative references in Clause 2. A list of all parts in the ISO 7267 series can be found on the ISO website.iv ISO 2017 All
28、rights reserved ISO 7267-1:2017(E) Introduction The 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, determined by whichever method i
29、s chosen, are therefore dependent not only on the method employed and on the rubber, but also on the diameter of the roller, 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 hardness” is used to distinguish betwee
30、n the values obtained by methods described in the various parts of this document 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 International Standards. Since rollers vary considerably in size
31、, 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 on one test method. Consequently, three methods are described in the ISO 7267 series, each capab
32、le of standing alone. ISO 2017 All rights reserved v BS ISO 72671:2017 Rubber-covered rollers Determination of apparent hardness Part 1: IRHD method WARNING 1 Persons using this document should be familiar with normal laboratory practice. T his do c u ment do e s not pu r p or t to add r e s s all o
33、f t he saf e t y pr oble m s , if a n y, a s soc i a t e d w it h it s use. It is the responsibility of the user to establish appropriate safety and health practices and to determine the applicability of any other restrictions. WA R N I N G 2 C er t a i n p ro c ed ure s s p e c i f ie d in t his do
34、 c u ment m i g ht i nvol ve t he u se or g en er a t i o n of s ub s t a nc e s , or t he g en er a t i o n of waste , t h at c ou ld c on s t i t u t e a lo c a l en v i r o n men t a l h azard. Reference should be made to appropriate documentation on safe handling and disposal after use. 1 Scope
35、This document specifies a method for the determination of the apparent hardness, expressed in International Rubber Hardness Degrees (IRHD), of vulcanized- or thermoplastic-rubber roller covers. The method is similar in principle to the methods used for the determination of the hardness of rubber in
36、ISO 48 in that it consists essentially of measuring the depth of penetration of a spherical indentor operating under a specified force. The apparatus used is similar to that described in ISO 48, having a base specifically designed for application to roller covers and similar curved surfaces. NOTE Wi
37、th some rollers, there can be significant variation in the thickness of the rubber over the surface of the roller, which could affect the measured apparent hardness. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes
38、 requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 48:2010, Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100
39、 IRHD) ISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods 3 T erms an d definiti ons No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: ISO O
40、nline browsing platform: available at http:/ /www.iso.org/obp IEC Electropedia: available at http:/ /www.electropedia.org/ 4 Ti me int erv al betw een forming and finis hed grinding , and t esting Tests shall not be carried out less than 16 h after forming and/or finished grinding and, for arbitrati
41、on purposes, not less than 72 h after forming. INTERNATIONAL ST ANDARD ISO 7267-1:2017(E) ISO 2017 All rights reserved 1 BS ISO 72671:2017 Rubber-covered rollers Determination of apparent hardness Part 1: IRHD method WARNING 1 Persons using this document should be familiar with normal laboratory pra
42、ctice. T his do c u ment do e s not pu r p or t to add r e s s all of t he saf e t y pr oble m s , if a n y, a s soc i a t e d w it h it s use. It is the responsibility of the user to establish appropriate safety and health practices and to determine the applicability of any other restrictions. WA R
43、 N I N G 2 C er t a i n p ro c ed ure s s p e c i f ie d in t his do c u ment m i g ht i nvol ve t he u se or g en er a t i o n of s ub s t a nc e s , or t he g en er a t i o n of waste , t h at c ou ld c on s t i t u t e a lo c a l en v i r o n men t a l h azard. Reference should be made to appropr
44、iate documentation on safe handling and disposal after use. 1 Scope This document specifies a method for the determination of the apparent hardness, expressed in International Rubber Hardness Degrees (IRHD), of vulcanized- or thermoplastic-rubber roller covers. The method is similar in principle to
45、the methods used for the determination of the hardness of rubber in ISO 48 in that it consists essentially of measuring the depth of penetration of a spherical indentor operating under a specified force. The apparatus used is similar to that described in ISO 48, having a base specifically designed f
46、or application to roller covers and similar curved surfaces. NOTE With some rollers, there can be significant variation in the thickness of the rubber over the surface of the roller, which could affect the measured apparent hardness. 2 Normative references The following documents are referred to in
47、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 document (including any amendments) applies. ISO 48:2010, Rubber, vulcanized or therm
48、oplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD) ISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods 3 T erms an d definiti ons No terms and definitions are listed in this document. ISO and IEC maintain terminological da
49、tabases for use in standardization at the following addresses: ISO Online browsing platform: available at http:/ /www.iso.org/obp IEC Electropedia: available at http:/ /www.electropedia.org/ 4 Ti me int erv al betw een forming and finis hed grinding , and t esting Tests shall not be carried out less than 16 h after forming and/or finished grinding and, for arbitration purposes, not less than 72 h after forming. INTERNATIONAL ST ANDARD ISO 7267-1:2017(E) ISO 2017 All rights reser
