1、BSI Standards PublicationRubber or plastics covered rollers SpecificationsPart 2: Surface characteristicsBS ISO 6123-2:2015National forewordThis British Standard is the UK implementation of ISO 6123-2:2015.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/73, Industrial
2、 rubber products.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2015.Publishe
3、d by BSI Standards Limited 2015ISBN 978 0 580 89019 2ICS 83.140.99Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 December 2015.Amendments/corrigenda issued sin
4、ce publicationDate Text affectedBRITISH STANDARDBS ISO 6123-2:2015 ISO 2015Rubber or plastics covered rollers Specifications Part 2: Surface characteristicsCylindres revtus de caoutchouc ou de plastique Spcifications Partie 2: Caractristiques de surfaceINTERNATIONAL STANDARDISO6123-2Third edition201
5、5-12-01Reference numberISO 6123-2:2015(E)BS ISO 6123-2:2015ISO 6123-2:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
6、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 below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8
7、 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 6123-2:2015ISO 6123-2:2015(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Surface quality 24.1 General . 24.2 Grades . 25 Surface finish 3
8、5.1 Methods of surface treatment Terms and classification 35.2 Description by surface treatment Types . 35.2.1 Type 1 Polished finish 35.2.2 Type 2 Fine grinding finish 35.2.3 Type 3 Standard grinding finish 35.2.4 Type 4 Turned finish . 35.2.5 Type 5 Unground finish 45.2.6 Type S Special treatment
9、. 45.3 Characterization by surface roughness . 45.3.1 Requirement 45.3.2 Method of testing . 45.3.3 Expression of results 65.3.4 Repeatability and reproducibility . 6Annex A (informative) Relation between surface treatment and surface roughness . 7 ISO 2015 All rights reserved iiiContents PageBS ISO
10、 6123-2:2015ISO 6123-2:2015(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 out through ISO technical committees. Each member body interest
11、ed 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 Electrotechnical Co
12、mmission (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 approval criteria needed for the different types of ISO documents
13、 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 subject of patent rights. ISO shall not be held responsible fo
14、r 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 trade name used in this document is information given for the c
15、onvenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Forew
16、ord - Supplementary informationThe committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses).This third edition cancels and replaces the second edition (ISO 6123-2:1988), of which it constitutes a minor revision to update the nor
17、mative references.ISO 6123 consists of the following parts, under the general title Rubber or plastics covered rollers Specifications: Part 1: Requirements for hardness Part 2: Surface characteristics Part 3: Dimensional tolerancesiv ISO 2015 All rights reservedBS ISO 6123-2:2015ISO 6123-2:2015(E)In
18、troductionCovered rollers are cylindrical cores, generally of metal, with a cover of rubber or plastics or a particular use. They are manufactured in a wide variety of sizes and hardness grades depending on the intended use. ISO 2015 All rights reserved vBS ISO 6123-2:2015Rubber or plastics covered
19、rollers Specifications Part 2: Surface characteristics1 ScopeThis part of ISO 6123 establishes a classification of rubber or plastics covered rollers according to surface quality or imperfections and surface finish. A test method for the determination of surface roughness is also described.2 Normati
20、ve referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) app
21、lies.ISO 3274, Geometrical Product Specifications (GPS) Surface texture: Profile method Nominal characteristics of contact (stylus) instrumentsISO 4288, Geometrical Product Specifications (GPS) Surface texture: Profile method Rules and procedures for the assessment of surface textureISO 23529, Rubbe
22、r General procedures for preparing and conditioning test pieces for physical test methods3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1arithmetical mean deviation of the profileRaarithmetical mean of the absolute values of the profile departur
23、es within the sampling length, lRlyx xlad=10or approximately Rnyiina=11where n is the number of discrete profile deviations.Note 1 to entry: The values of Rain practice are determined within the evaluation length which includes several sampling lengths. According to ISO 3274, the sampling length is
24、equal to the cut-off.3.2ten point height of irregularitiesRzaverage value of the absolute values of the heights of five highest profile peaks and the depths of five deepest profile valleys within the sampling lengthRyyziiii=+=pv15155INTERNATIONAL STANDARD ISO 6123-2:2015(E) ISO 2015 All rights reser
25、ved 1BS ISO 6123-2:2015ISO 6123-2:2015(E)whereypiis the height of the ith highest peak profile;yviis the depth of the ith deepest profile valley.Note 1 to entry: Depending on the shape of the profile, in certain cases, a problem arises associated with the lack of a number of profile peaks and valley
26、s and/or the super-imposing of waviness on the roughness.4 Surface quality4.1 GeneralThe manufacturing process and the raw materials used in the manufacture of rubber or plastics covered rollers may cause sporadic imperfections, in the form of holes and foreign matter, in the surface of the roller c
27、overs. The number, size and location of permissible surface imperfections shall be agreed between the interested parties.The type of surface finish (see Clause 5) shall be observed when selecting the grade of imperfections.4.2 GradesThe rollers may be graded according to the permissible numbers and
28、sizes of imperfections as follows:Grade x/yThis means that imperfections up to and including x mm2in area are acceptable; not more than two imperfections each having an area between x mm2and y mm2inclusive are permissible in any 0,1 m2of cover area; roller covers showing imperfections larger than y
29、mm2in area shall be rejected.The values of x and y shall be agreed between the interested parties.If no requirements for surface quality are necessary, the rollers shall be designated “grade N”.EXAMPLE A medium grade of surface quality can be described by the designation:Grade 0,5/2This means that i
30、mperfections up to and including 0,5 mm2in area are acceptable; not more than two imperfections each having an area be tween 0,5 mm2and 2 mm2inclusive are permissible in any 0,1 m2of cover area; roller covers showing imperfections larger than 2 mm2in area shall be rejected.If agreement between the i
31、nterested parties, or special provisions in national standard, are intended, the required quality should be chosen from the grades given below: grade 0,1/0,3 grade 0,3/1 grade 0,5/2 grade 2/52 ISO 2015 All rights reservedBS ISO 6123-2:2015ISO 6123-2:2015(E) grade 5/10 grade N5 Surface finishThe surf
32、ace finish of a roller cover is dictated by the intended use. It shall be characterized either as a type of surface treatment (see 5.1) or as the maximum value of surface roughness (see 5.3), as agreed between the interested parties.5.1 Methods of surface treatment Terms and classificationTable 1 sh
33、ows the generally employed principal methods of surface treatment, by means of which the roller surfaces are classified (see 5.2). The type of surface finish, and the structure or texture which can be achieved, are dependent upon the hardness and composition of the roller cover.Table 1 Surface finis
34、hesType Surface treatment Sequence of treatment12345PolishingGrinding, fineGrinding, standardTurningUnground finish5.2 Description by surface treatment TypesThe surface structures described for Types 1 to 4 are produced by regular treatments and have a roughness without preferential direction.The ty
35、pe required shall be chosen by agreement between the interested parties.5.2.1 Type 1 Polished finishIn soft elastomers, the surface is velvet-like; in hard rubber (ebonite) or plastics, it is smooth.Grinding marks and scratches shall not be visible to the naked eye. Sporadic grinding blemishes are p
36、ermissible. Not all qualities permit this finish.5.2.2 Type 2 Fine grinding finishSlight grinding and feed marks are visible to the naked eye, but are not noticeable when touching the roller.5.2.3 Type 3 Standard grinding finishGrinding marks and grinding feed are visible and just noticeable when to
37、uching the roller.5.2.4 Type 4 Turned finishThe surface is solely turned, with as little feed of the turning tool as practicable. Turning grooves are visible and noticeable when touching the roller. ISO 2015 All rights reserved 3BS ISO 6123-2:2015ISO 6123-2:2015(E)5.2.5 Type 5 Unground finishThe sur
38、face of the roller is without any treatment or dressing, for example a cloth-marked roller surface as it comes from the vulcanization process or a rough-cast plastics-covered roller.5.2.6 Type S Special treatmentThis applies to surface finishes other than those in 5.2.1 to 5.2.5, for example a fine-
39、cast plastics-covered roller, or to a finish for specific applications with a special structure as defined by agreement between the interested parties.5.3 Characterization by surface roughness5.3.1 RequirementThe surface finish of rubber or plastics covered rollers shall be quantitatively expressed
40、in one of the following units, as agreed between the interested parties:a) arithmetical mean deviation of the profile Ra(see 3.1), in micrometers;b) ten point height of irregularities Rz(see 3.2), in micrometers.The roughness of the cover surface shall appear visually uniform.5.3.2 Method of testing
41、5.3.2.1 Test instrument: Profile metera) GeneralThe determination of surface roughness shall be carried out by using a contact profile meter, system M, as specified in ISO 3274. Unless specified below, the basic parameters and metrological characteristics of the instrument shall be those specified i
42、n ISO 3274.The instrument shall be equipped with a suitable support for use on curved surfaces.The contact stylus shall be calibrated at the indicated measurement values, for example by use of a reference surface of known roughness.b) StylusStylus angle: 1,57 rad (90)Radius of stylus tip: 5 m max.St
43、atic measuring force at mean level of stylus: 4 mN max.c) Sampling length, evaluation length and cut-offThe sampling length l and the evaluation length lnshall be as specified in ISO 4288.NOTE For rubberor plastics covered rollers, the following values of cut-off Bsampling length l and evaluation le
44、ngth lnare encountered in practice.4 ISO 2015 All rights reservedBS ISO 6123-2:2015ISO 6123-2:2015(E)Table 2 Parameter for specified RaRamBmmlmmlnmm 0,1 up to 2 2 up to 100,82,50,82,54,012,5Table 3 Parameter for specified RzRzmBmmlmmlnmm 0,5 up to 10 10 up to 500,82,50,82,54,012,55.3.2.2 Test condit
45、ionsa) TemperatureThe test shall be carried out, whenever possible, at a standard temperature (23 C 2 C or 27 C 2 C) in accordance with ISO 23529. The covered roller shall be brought to the test temperature prior to testing to ensure temperature equilibrium.The test temperature shall be recorded.b)
46、Cover surfaceBefore measurements are made, the cover surface shall be cleaned carefully to remove dust and other contaminants which have collected during storage .The cleaning shall not damage the surface.NOTE Wiping the surface with isopropyl alcohol has been found suitable.5.3.2.3 Test procedurea)
47、 Measuring areasFor rollers having a cover up to 2,5 m long, the roughness shall be measured in five areas: three areas, each 120 apart, around the circumference in the middle of the roller; one area at each end, at a distance of 10 % of the cover length from the end.For rollers having a cover over
48、2,5 m long, the roughness shall be measured in nine areas: three areas, each 120 apart, around the circumference in the middle of the roller; three areas at each end, each 120 apart, around the circumference, and each at a distance of 10 % of the cover length from the end.b) OperationFirmly locate t
49、he roller to be tested with its longitudinal axis horizontal and with the area in which the surface roughness is to be measured uppermost. Place the measuring equipment on the roller and adjust the pick-up so that the correct static measuring force at the mean level of the stylus is exerted on the surface.Make one measurement in each measuring area with the stylus traverse line parallel to the axis of the roller. ISO 2015 All ri
