1、July 2017 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!%gve“2688366www.din.deDIN EN
2、 ISO 20567-2Paints and varnishes Determination of stonechip resistance of coatings Part 2: Singleimpact test with a guided impact body (ISO 205672:2017);English version EN ISO 205672:2017,English translation of DIN EN ISO 20567-2:2017-07Beschichtungsstoffe Prfung der Steinschlagfestigkeit von Beschi
3、chtungen Teil 2: Einzelschlagprfung mit gefhrtem Schlagkrper (ISO 205672:2017);Englische Fassung EN ISO 205672:2017,Englische bersetzung von DIN EN ISO 20567-2:2017-07Peintures et vernis Dtermination de la rsistance des revtements aux impacts de cailloux Partie 2: Essai de choc simple par corps perc
4、utant guid (ISO 205672:2017);Version anglaise EN ISO 205672:2017,Traduction anglaise de DIN EN ISO 20567-2:2017-07SupersedesDIN EN ISO 205672:200701www.beuth.deDocument comprises 18 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritati
5、ve.07.17 DIN EN ISO 20567-2:2017-07 2 A comma is used as the decimal marker. National foreword This document (EN ISO 20567-2) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes”, Subcommittee SC 9 “General test methods for paints and varnishes” (Secretariat: BSI, United Kingdom
6、), 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 (DIN Standards Committee Coatings and Coating Materials), Working Committ
7、ee NA 002-00-07-09 AK “Automotive coatings”. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1514 DIN EN ISO 1514 ISO 2808 DIN EN ISO 2808 ISO 3270 DIN EN 23270 Amendments This standard differs from DIN EN ISO 20567-2:2007-01 as follows
8、: a) it has been specified when the calibration of the apparatus shall be made; b) the reference to optical imaging has been deleted; c) the clause on sampling has been deleted; d) the description of suitable methods for the removal of loose paint has been transferred to an informative annex as exam
9、ples, and, for the method using adhesive tape, the adhesive strength of the tape is no longer specified; e) some minor corrections have been made; f) the text has been editorially revised and normative references have been updated. Previous editions DIN 55996-2: 2002-08 DIN EN ISO 20567-2: 2007-01 D
10、IN EN ISO 20567-2:2017-07 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 Determinat
11、ion of film thickness DIN EN ISO 20567-2:2017-07 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 20567-2 February 2017 ICS 87.040 Supersedes EN ISO 20567-2:2006English Version Paints and varnishes - Determination of stone-chip resistance of coatings - Part
12、 2: Single-impact test with a guided impact body (ISO 20567-2:2017) Peintures et vernis - Dtermination de la rsistance des revtements aux impacts de cailloux - Partie 2: Essais de chocs simple par corps percutant guid(ISO 20567-2:2017) Beschichtungsstoffe - Prfung der Steinschlagfestigkeit von Besch
13、ichtungen - Teil 2: Einzelschlagprfung mit gefhrtem Schlagkrper (ISO 20567-2:2017) This European Standard was approved by CEN on 5 November 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a
14、 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 versions (English, French, German).
15、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, Belgium, Bulgaria, Croatia, Cyp
16、rus, 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, Sweden, Switzerland, Turkey and U
17、nited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No.
18、EN ISO 20567-2:2017 EEuropean foreword .3Introduction 51 Scope . 62 Normative references 63 Terms and definitions . 64 Principle 65 Apparatus and materials 76 Test panels 76.1 Substrate 76.2 Preparation and coating 76.3 Thickness of the coating . 77 Procedure. 97.1 Calibration 97.2 Conditioning of t
19、he test panels . 97.3 Test conditions 97.4 Number of test runs 97.5 Determination 108 Evaluation . 109 Precision 119.1 Repeatability limit, r .119.2 Reproducibility limit, R 1110 Test report 12Annex A (informative) Examples of suitable procedures for removing loose paint 13Annex B (normative) Calibr
20、ation of the test apparatus . 14Contents PageDIN EN ISO 20567-2:2017-07 EN ISO 20567-2:2017 (E) 2Foreword 4European foreword This document (EN ISO 20567-2:2017) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes“ in collaboration with Technical Committee CEN/TC 139 “Paints and
21、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 August 2017 and conflicting national standards shall be withdrawn at the latest by August 2017.
22、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 document supersedes EN ISO 20567-2:2006. According to the CEN-CENELEC Internal Re
23、gulations, 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 Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland,
24、 Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 20567-2:2017 has been approved by CEN as EN ISO 20567-2:2017 without any modificatio
25、n. DIN EN ISO 20567-2:2017-07 EN ISO 20567-2:2017 (E) 3 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.
26、 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 collaborates closely with the Interna
27、tional 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 approval criteria needed for the differ
28、ent 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 subject of patent rights. ISO shall
29、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 trade name used in this document is i
30、nformation 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 adherence to the World Trade Organization (WTO) principles in the Technical
31、 Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The 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 replaces the first edition (ISO 20567-2:2005)
32、, which has been technically revised with the following main changes: a specification has been added, when the calibration of the apparatus shall be made; reference to optical imaging has been deleted; the clause on sampling has been deleted; the description of suitable methods for removal of loose
33、paint have been transferred to an informative annex as examples, and, for the method using adhesive tape, the adhesive strength of the tape is no longer specified; some minor corrections have been made; this document is revised editorially and the normative references have been updated.A list of all
34、 parts in the ISO 20567 series can be found on the ISO website.DIN EN ISO 20567-2:2017-07 EN ISO 20567-2:2017 (E) 4 IntroductionIn the automobile industry, multi-layer paint coatings are applied to car bodies for protection. Grit, road-metal and other materials can damage these coatings in such a wa
35、y that individual layers come off or the whole coating delaminates from the substrate.Stone chipping can be simulated by means of single- and/or multi-impact tests. ISO 20567-1 describes multi-impact testing; ISO 20567-2 and ISO 20567-3 describe single-impact tests.DIN EN ISO 20567-2:2017-07 EN ISO
36、20567-2:2017 (E) 5 1 ScopeThis document specifies a method for the evaluation of the resistance of automobile finishes and other coatings to the impact of a wedge-shaped body projected onto the surface under test to simulate the impact of stones.2 Normative referencesThe following documents are refe
37、rred 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 document (including any amendments) applies.ISO 1514, Paints and varnishes
38、 Standard panels for testingISO 2808, Paints and varnishes Determination of film thicknessISO 3270, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testingEN 573-3, Aluminium and aluminium alloys Chemical composition and form of wrought products Part 3:
39、Chemical composition and form of products3 Terms and definitionsNo terms and definitions are listed in this document.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing pla
40、tform: available at http:/www.iso.org/obp4 PrincipleThe stone-chip resistance of the coating under test is checked by projecting a defined impact body onto it. The impact body used in the test has a wedge-shaped cutting edge to obtain a damage pattern equivalent to that produced in a multi-impact te
41、st. The wedge-shaped impact body is pushed onto the coating under test by the transmission of a pulse of energy from a steel ball accelerated using compressed air.Loose fragments of coating material are removed.The stone-chip resistance is evaluated by measuring the total width of the delaminated co
42、ating, including the mark left by the wedge.DIN EN ISO 20567-2:2017-07 EN ISO 20567-2:2017 (E) 6 5 Apparatus and materialsOrdinary laboratory apparatus, together with the following.5.1 Single-impact tester.Figure 1 shows the upper part of the test apparatus.Figure 2 shows the shape of the impact bod
43、y and its dimensions. The impact body shall be made of hardened steel (hardness 60 HRC to 66 HRC).The test panel is inserted on the tester with the wedge-shaped end of the impact body touching the coated test panel and the spring exerting a slight pressure on the body. A steel ball of mass inferior
44、to that of the impact body is accelerated by a compressed-air blast (p = 300 kPa) and transmits part of its energy to the impact body, which then strikes the test panel.NOTE 100 kPa = 1bar.The impact body shall be checked, and replaced if necessary, after a maximum of 500 test runs (i.e. after 500 i
45、mpacts) or at the end of the series of tests during which the impact body passes the point at which it has been used for a total of 500 test runs.6 Test panels6.1 SubstrateUse test panels of at least 100 mm 100 mm in size that are at least 0,7 mm thick.6.2 Preparation and coatingPrepare each test pa
46、nel in accordance with ISO 1514 before coating and drying or stoving it. Use the application method specified by the paint manufacturer.6.3 Thickness of the coatingDetermine the thickness, in micrometres, of the dry coating by one of the procedures specified in ISO 2808.DIN EN ISO 20567-2:2017-07 EN
47、 ISO 20567-2:2017 (E) 7 Key1 counterweight (mass exceeding 1 kg) 5 housing2 test panel 6 steel ball, hardness 60 HRC to 66 HRC3 impact body 7pipe, bore 8600 015,mm4 steel spring, diameter of wire 0,8 mm, 2,5 windings 8 compressed airFigure 1 Upper part of the test apparatus showing position of impact bodyDIN EN ISO 20567-2:2017-07 EN ISO 20567-2:2017 (E) 8 Dimensions in millimetresFigure 2 Impact body7 Procedure7.1 CalibrationInstructions for the calibration of the tester are given in Annex B.7.2 Conditioning of the test panelsCondition the test panels for
