1、December 2016 English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 87.040!%Uz“2595087www.din.deDIN
2、 EN ISO 7784-3Paints and varnishes Determination of resistance to abrasion Part 3: Method with abrasivepaper covered wheel and linearly reciprocating test specimen (ISO 77843:2016);English version EN ISO 77843:2016,English translation of DIN EN ISO 7784-3:2016-12Beschichtungsstoffe Bestimmung des Ab
3、riebwiderstandes Teil 3: Verfahren mit schleifpapierbelegtem Rad und sich hin und herbewegender Probe (ISO 77843:2016);Englische Fassung EN ISO 77843:2016,Englische bersetzung von DIN EN ISO 7784-3:2016-12Peintures et vernis Dtermination de la rsistance labrasion Partie 3: Mthode utilisant une roue
4、revtue de papier abrasif et une prouvette anime dun mouvement de vaetvient linaire (ISO 77843:2016);Version anglaise EN ISO 77843:2016,Traduction anglaise de DIN EN ISO 7784-3:2016-12SupersedesDIN EN ISO 77843:200607www.beuth.deDocument comprises 17 pagesDTranslation by DIN-Sprachendienst.In case of
5、 doubt, the German-language original shall be considered authoritative.11.16 DIN EN ISO 7784-3:2016-12 2 A comma is used as the decimal marker. National foreword This document (EN ISO 7784-3:2016) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes”, Subcommittee SC 9 “General t
6、est methods for paints and varnishes” (Secretariat: BSI, United Kingdom) in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Beschichtungsstoffe und Beschichtungen (DI
7、N Standards Committee Coatings and Coating Materials), Working Committee NA 002-00-07 AA Allgemeine Prfverfahren fr Beschichtungsstoffe und Beschichtungen. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1514 DIN EN ISO 1514 ISO 2808 DI
8、N EN ISO 2808 ISO 3270 DIN EN 23270 ISO 4618 DIN EN ISO 4618 ISO 5725-1:1994 DIN ISO 5725-1:1997-11 ISO 6344-1 DIN ISO 6344-1 ISO 7823-1 DIN EN ISO 7823-1 ISO 8251 DIN EN ISO 8251 DIN EN ISO 7784 consists of the following parts, under the general title Paints and varnishes Determination of resistanc
9、e to abrasion: Part 1: Method with abrasive-paper covered wheels and rotating test specimen Part 2: Method with abrasive rubber wheels and rotating test specimen Part 3: Method with abrasive-paper covered wheel and linearly reciprocating test specimen Amendments This standard differs from DIN EN ISO
10、 7784-3:2006-07 as follows: a) the title of the standard has been modified; b) Clause 3 “Terms and definitions” has been included; c) a figure illustrating the principle of the method has been included; d) the required supplementary information included in the former Annex A has been integrated in t
11、he test report; e) the calibration of the apparatus included in the former Annex B has been deleted; f) the test procedure has been re-arranged; g) the text has been editorially revised and normative references have been updated. Previous editions DIN EN ISO 7784-3: 2006-07 DIN EN ISO 7784-3:2016-12
12、 3 National Annex NA (informative) Bibliography DIN EN 23270, Paints, varnishes and their raw materials Temperatures and humidities for conditioning and testing DIN EN ISO 1514, Paints and varnishes Standard panels for testing DIN EN ISO 2808, Paints and varnishes Determination of film thickness DIN
13、 EN ISO 4618, Paints and varnishes Terms and definitions DIN EN ISO 7823-1, Plastics Poly(methyl methacrylate) sheets Types, dimensions and characteristics Part 1: Cast sheets DIN EN ISO 8251, Anodizing of aluminium and its alloys Measurement of abrasion resistance of anodic oxidation coatings DIN I
14、SO 5725-1:1997-11, Accuracy (trueness and precision) of measurement methods and results Part 1: General principles and definitions (ISO 5725-1:1994) DIN ISO 6344-1, Coated abrasives Grain size analysis Part 1: Grain size distribution test DIN EN ISO 7784-3:2016-12 4 This page is intentionally blank
15、EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 7784-3 April 2016 ICS 87.040 Supersedes EN ISO 7784-3:2006English Version Paints and varnishes - Determination of resistance to abrasion - Part 3: Method with abrasive-paper covered wheel and linearly reciprocating test specimen(ISO 7784-3:201
16、6) Peintures et vernis - Dtermination de la rsistance labrasion - Partie 3: Mthode utilisant une roue revtue de papier abrasif et Mthode utilisant une roue revtue de papier abrasif et une prouvette anime dun mouvement de va-et-vient linaire(ISO 7784-3:2016) Beschichtungsstoffe - Bestimmung des Abrie
17、bwiderstandes - Teil 3: Verfahren mit schleifpapierbelegtem Rad und sich hin- und herbewegender Probe (ISO 7784-3:2016) This European Standard was approved by CEN on 27 February 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving
18、this 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 officia
19、l versions (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 Au
20、stria, 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, Slovakia, Slovenia, Spain, Swe
21、den, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for C
22、EN national Members. Ref. No. EN ISO 7784-3:2016 EEuropean foreword .3Introduction 51 Scope . 62 Normative references 63 Terms and definitions . 64 Principle 75 Apparatus and materials 86 Test specimens 96.1 Preparation of test specimens . 96.2 Film thickness 96.3 Conditioning 97 Procedure. 97.1 Agr
23、eements 97.2 Preparation of the abrasive wheel . 97.3 Test conditions . 107.4 Number of determinations 107.5 General test procedure 107.6 Procedure of the pre-test 107.7 Procedure of the main test . 118 Evaluation of the main test . 118.1 Loss in mass by abrasion . 118.2 Abrasion resistance 119 Prec
24、ision 119.1 General 119.2 Repeatability limit . 119.3 Reproducibility limit . 1110 Test report 12Bibliography . 13Contents PageDIN EN ISO 7784-3:2016-12 EN ISO 7784-3:2016 (E)2Foreword 4European foreword This document (EN ISO 7784-3:2016) has been prepared by Technical Committee ISO/TC 35 “Paints an
25、d varnishes“ in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of which is held by DIN. 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 October 2016, and
26、conflicting national standards shall be withdrawn at the latest by October 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This
27、document supersedes EN ISO 7784-3:2006. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yug
28、oslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 7784-3:2016
29、has been approved by CEN as EN ISO 7784-3:2016 without any modification. DIN EN ISO 7784-3:2016-12 EN ISO 7784-3:2016 (E)3 ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International
30、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-governmental, in liaison with ISO, al
31、so 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 ISO/IEC Directives, Part 1.
32、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 possibility that some of the elemen
33、ts 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 patent declarations received
34、(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 meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherenc
35、e to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnishes.This second edition cancels and
36、 replaces the first edition (ISO 7784-3:2000), which has been technically revised with the following changes:a) the title has been changed;b) the terms and definitions clause has been amended;c) a figure explaining the principle of the method was amended;d) the supplementary test conditions previous
37、ly in Annex A have been integrated in the test report;e) the calibration of the apparatus previously in Annex B has been deleted;f) the test procedure has been re-arranged;g) the text has been editorially revised and the normative references have been updated.ISO 7784 consists of the following parts
38、, under the general title Paints and varnishes Determination of resistance to abrasion: Part 1: Method with abrasive-paper covered wheels and rotating test specimen Part 2: Method with abrasive rubber wheels and rotating test specimen Part 3: Method with abrasive-paper covered wheel and linearly rec
39、iprocating test specimenDIN EN ISO 7784-3:2016-12 EN ISO 7784-3:2016 (E)4 IntroductionThis part of ISO 7784 is one of the three parts of ISO 7784 dealing with test methods for the determination of the resistance to abrasion of coatings using abrasive wheels. The characteristics and differences of th
40、ese methods are summarized in Table 1.Table 1 Types of methodStandardAbrasive wheelTest specimen movementType Degree of freedomISO 7784-1Abrasive paper on rubber wheelFreely rotatable RotationISO 7784-2 Abrasive rubber wheelISO 7784-3Abrasive paper on metal wheelRigid with stroke-dependent rotationa
41、Linear reciprocationaA mechanism rotates the abrasive wheel by a small angle after each double stroke so that a new area of the abrasive paper is effective.The methods using abrasive-paper covered wheels (ISO 7784-1 and ISO 7784-3) are preferably to be applied.DIN EN ISO 7784-3:2016-12 EN ISO 7784-3
42、:2016 (E)5 1 ScopeThis part of ISO 7784 specifies a method for determining the resistance to abrasion of coatings, for which a loaded, rigid abrasive-paper covered wheel affects the coating of the linearly reciprocating test specimen.2 Normative referencesThe following documents, in whole or in part
43、, 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) applies.ISO 1514, Paints and varnishes Standard panels for t
44、estingISO 2808, Paints and varnishes Determination of film thicknessISO 3270, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testingISO 4618, Paints and varnishes Terms and definitionsISO 7823-1, Plastics Poly(methyl methacrylate) sheets Types, dimensio
45、ns and characteristics Part 1: Cast sheets3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 4618 and the following apply.3.1test specimenspecimen on which the test is to be carried out3.2double strokedsone complete reciprocal movement made by the abrasi
46、ve wheel3.3repeatability conditionsconditions where independent test results are obtained with the same method on identical test items in the same laboratory by the same operator using the same equipment within short intervals of timeSOURCE: ISO 5725-1:1994, 3.14DIN EN ISO 7784-3:2016-12 EN ISO 7784
47、-3:2016 (E)6 3.4repeatability limitrvalue less than or equal to which the absolute difference between two test results obtained under repeatability conditions (3.3) may be expected to be with a probability of 95 %SOURCE: ISO 5725-1:1994, 3.163.5reproducibility conditionsconditions where test results
48、 are obtained with the same method on identical test items in different laboratories with different operators using different equipmentSOURCE: ISO 5725-1:1994, 3.183.6reproducibility limitRvalue less than or equal to which the absolute difference between two test results obtained under reproducibility conditions (3.5) may be expected to be with a probability of 95 %SOURCE: ISO 5
