BS EN ISO 20567-1-2017 Paints and varnishes Determination of stone-chip resistance of coatings Multi-impact testing《涂料和清漆 涂层耐石片划痕测定 多冲击测试》.pdf

1、BS EN ISO 20567-1:2017Paints and varnishes Determination of stone-chip resistance of coatingsPart 1: Multi-impact testing (ISO 20567-1:2017)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 20567-1:2017 BRITISH STANDARDNational forewordThis British Standard i

2、s the UK implementation of EN ISO 20567-1:2017. It supersedes BS EN ISO 20567-1:2006 which iswithdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/10, Test methods for paints.A list of organizations represented on this committee can be obtained on request to its

3、secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 87403 1 ICS 87.040 Compliance with a British Standard can

4、not confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 205

5、67-1 February 2017 ICS 87.040 Supersedes EN ISO 20567-1:2006English Version Paints and varnishes - Determination of stone-chip resistance of coatings - Part 1: Multi-impact testing (ISO 20567-1:2017) Peintures et vernis - Dtermination de la rsistance des revtements aux impacts de cailloux - Partie 1

6、: Essais de chocs multiples (ISO 20567-1:2017) Beschichtungsstoffe - Prfung der Steinschlagfestigkeit von Beschichtungen - Teil 1: Multischlagprfung (ISO 20567-1:2017) This European Standard was approved by CEN on 5 November 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulat

7、ions which stipulate the conditions for giving 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.

8、 This European Standard exists in three official 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

9、members are the national standards bodies of Austria, 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, Po

10、rtugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, 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 2017 CEN All rights of exploitatio

11、n in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 20567-1:2017 EBS EN ISO 20567-1:2017EN ISO 20567-1:2017 (E) 3 European foreword This document (EN ISO 20567-1:2017) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes“ in collaboration w

12、ith 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 August 2017 and conflicting national standards sh

13、all be withdrawn at the latest by August 2017. 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 20567-1

14、: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 Yugoslav Republic of Macedonia, Fran

15、ce, Germany, Greece, Hungary, Iceland, Ireland, 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 20567-1:2017 has been approved by CEN

16、 as EN ISO 20567-1:2017 without any modification. BS EN ISO 20567-1:2017ISO 20567-1:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 15 Apparatus . 26 Materials . 37 Test panels 47.1 Substrate 47.2 Preparation and coating 47.3 Thickness of coa

17、ting . 48 Procedure. 48.1 Conditioning of the test panels . 48.2 Test conditions 48.3 Projection of grit 49 Evaluation 510 Precision . 510.1 Repeatability limit, r 510.2 Reproducibility limit, R .511 Test report . 6Annex A (informative) Examples of suitable procedures for removing loose paint 10Anne

18、x B (informative) Recommended procedure for calibration of test apparatus (examination of the damaged area) 11 ISO 2017 All rights reserved iiiContents PageBS EN ISO 20567-1:2017ISO 20567-1:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national

19、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 to be represented on that committee. International

20、 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 used to develop this document and those intended for

21、 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 of the ISO/IEC Directives, Part 2 (see www.iso.org

22、/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 identified during the development of the document will be i

23、n 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 the meaning of ISO specific terms and expressions re

24、lated 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/foreword.html.The committee responsible for this document is ISO/TC 35, Paints and varnishes, S

25、ubcommittee SC 9, General test methods for paints and varnishes.This second edition cancels and replaces the first edition (ISO 20567-1:2005), which has been technically revised with the following main changes: a table with the particle size distribution of the grit material has been added; a note c

26、oncerning the use of actual pressure gages has been added to Figure 2; the clause on sampling has been deleted; the description of suitable methods for removal of loose paint have been transferred to an informative annex as examples and, for the method using adhesive tape, the adhesive strength of t

27、he tape is no longer specified; this document is revised editorially and the normative references have been updated.A list of all parts in the ISO 20567 series can be found on the ISO website.iv ISO 2017 All rights reservedBS EN ISO 20567-1:2017ISO 20567-1:2017(E)IntroductionIn the automobile indust

28、ry, multi-layer paint coatings are applied to car bodies for protection. Grit, road-metal and other materials can damage these coatings in such a way 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-i

29、mpact tests. ISO 20567-1 describes multi-impact testing; ISO 20567-2 and ISO 20567-3 describe single-impact tests.NOTE A recommended procedure for calibration of the apparatus is given in Annex B. Note that this annex is informative because the method described in it is not the only one suitable for

30、 checking whether a uniform impact pattern is produced. ISO 2017 All rights reserved vBS EN ISO 20567-1:2017BS EN ISO 20567-1:2017Paints and varnishes Determination of stone-chip resistance of coatings Part 1: Multi-impact testing1 ScopeThis document specifies three methods for the evaluation of the

31、 resistance of automobile finishes and other coatings to chilled-iron grit projected onto the surface under test to simulate the impact of small stones.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements o

32、f 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 565, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet Nominal sizes of openingsISO 1514, Pai

33、nts and varnishes 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 testingISO 11124-2, Preparation of steel substrates before application of paints and rela

34、ted products Specifications for metallic blast-cleaning abrasives Part 2: Chilled-iron gritISO 11125-2, Preparation of steel substrates before application of paints and related products Test methods for metallic blast-cleaning abrasives Part 2: Determination of particle size distributionISO 21227-2:

35、2006, Paints and varnishes Evaluation of defects on coated surfaces using optical imaging Part 2: Evaluation procedure for multi-impact stone-chipping test3 Terms and definitionsNo terms and definitions are listed in this document.ISO and IEC maintain terminological databases for use in standardizat

36、ion at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp4 PrincipleThe stone-chip resistance of the coating under test is checked by projecting a large number of small sharp-edged bodies onto it in a s

37、hort period of time. The material used in the test is chilled-iron grit, which is projected onto the coating at a defined angle using compressed air. The extent of the damage INTERNATIONAL STANDARD ISO 20567-1:2017(E) ISO 2017 All rights reserved 1BS EN ISO 20567-1:2017ISO 20567-1:2017(E)caused will

38、 depend not only on the angle, but also on the pressure level, the mass of the projectiles, the duration of the bombardment and the design of the test apparatus.Loose fragments of coating material are removed.The extent of the damage is determined by comparison with pictorial reference standards.5 A

39、pparatusOrdinary laboratory apparatus, together with the following.5.1 Multi-impact tester.Figure 1 and Figure 2 show the test apparatus and its dimensions.The vibrating conveyor carries the grit from the funnel into the air blast in front of the grit-accelerating nozzle. It shall be designed so tha

40、t the grit feed speed can be varied. The apparatus shall be capable of projecting 500 g of grit during a period of 10 s. The pressure chamber shall be large enough to allow the specified working pressure of 200 kPa to be held at a constant level for at least 10 s while the solenoid valve is open.Use

41、d grit can be taken from the grit-catching chamber after the test and used again to a limited extent (see 6.1).1 2 3 4 5678 910 11 1213 1415Key1 solenoid valve 9 vibrating conveyor2 compressed-air line 10 grit feed funnel3 pressure reducer (to working pressure) 11 grit-accelerating pipe (accessible

42、from back for 4 pressure chamber (capacity 90 l) replacement)5 manometer (indicates working pressure) 12 protective housing6 air-accelerating nozzle 13 grit-catching chamber7 grit feed chute 14 test panel8 grit feed pipe 15 test panel holderFigure 1 Multi-impact tester General view2 ISO 2017 All rig

43、hts reservedBS EN ISO 20567-1:2017ISO 20567-1:2017(E)1675Key1 pressure gauge 5 grit feed pipe measurement range: up to 400 kPa (= 4 bar) length: (205 3) mm diameter of scale: 100 mm inside diameter: (19 1) mm accuracy: class 1,0 connected to grit-accelerating pipe at angle of (45 1) and distance of

44、(35 1) mm from tip of air-accelerating nozzle2 connecting pipe length: (190 1) mm inside diameter: (19 0,2) mm 6 jet of grit3 air-accelerating nozzle distance from grit-accelerating pipe to centre of test panel: (290 1) mm length: (80 1) mm inside diameter at entry: (19 0,2) mm angle between axis of

45、 jet and test panel: (54 1) inside diameter at exit: (7 0,2) mm 7 aperture4 flange and grit-accelerating pipe 80 mm 80 mm window defining test area on test panel overall length: (352 2) mm inside diameter: (30 0,2) mmNOTE Instead of the mechanical pressure gauge described under point 1 in Figure 2,

46、an electronic pressure sensor with comparable data e.g. measuring range up to 600 kPa (= 6 bar)/accuracy class 0,5 is often used nowadays and the working pressure is indicated in a display.Figure 2 Multi-impact tester Detailed drawing and dimensions6 Materials6.1 Grit.The grit1)shall be chilled-iron

47、 grit conforming to the requirements of ISO 11124-2, except that the particle size, determined in accordance with ISO 11125-2 and ISO 565, shall be as specified in Table 1.1) For information about grit suppliers, please contact the DIN Normenausschuss Beschichtungsstoffe undBeschichtungen (NAB), Bur

48、ggrafenstrae 6, 10787 Berlin, Germany. ISO 2017 All rights reserved 3BS EN ISO 20567-1:2017ISO 20567-1:2017(E)Table 1 Particle size distributionMesh size mmFraction %On the sieve 5,00 a4,50 20 to 254,00 35 to 453,55 30 to 40Through the sieve 3,55 aaTo be discarded.100 g of the collected fractions in

49、 Table 1 shall contain 300 25 grit particles.The grit shall be replaced after a maximum of 100 test runs. Do not replace the grit during an ongoing series of tests.7 Test panels7.1 SubstrateUse test panels of at least 100 mm 100 mm in size.7.2 Preparation and coatingPrepare each test panel in accordance with ISO 1514 before coating and drying or stoving. Use the application method specified by the paint manufacturer.7.3 Thickness of c