《BS-ISO-20567-1-2005.pdf》由会员分享，可在线阅读，更多相关《BS-ISO-20567-1-2005.pdf（20页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS ISO 20567-1:2005 Paints and varnishes Determination of stone-chip resistance of coatings Part 1: Multi-impact testing ICS 87.040 ? Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:34:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 20567-1:2005 This British Standard
2、was published under the authority of the Standards Policy and Strategy Committee on 8 April 2005 BSI 8 April 2005 ISBN 0 580 45735 4 National foreword This British Standard reproduces verbatim ISO 20567-1:2005 and implements it as the UK national standard. The UK participation in its preparation was
3、 entrusted to Technical Committee STI/10, Test methods for paints, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this
4、 document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a cont
5、ract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals f
6、or change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 11 and a back cover. The BS
7、I copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:34:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 20567-1:2005(E) OSI 500
8、2 INTERNATIONAL STANDARD ISO 20567-1 First edition 2005-02-15 Paints and varnishes Determination of stone-chip resistance of coatings Part 1: Multi-impact testing Peintures et vernis Dtermination de la rsistance des revtements aux impacts de cailloux Partie 1: Essais de chocs multiples BS ISO 205671
9、:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:34:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS-76502 O1:(5002E) DPlcsid Fremia ihTs PDF file may ctnoian emdebt dedyfepcaes. In ccaocnadrw eith Aebods licensilop gnic,y this file mairp eb ynted iv roweb detu slahl ton ide ebtlnu de
10、ess the typefaces whice era hml era deddebicsnede to i dnanstlaled t noeh computfrep reormign tide ehtin.g In wodlnidaot gnhis file, trapise atpecc tiereht nser ehnopsiiblity fo not infriigngn Aebods licensilop gnic.y ehT ISO tneClar Secrteiraat caceptl on siibality in this .aera Ai ebods a tredamaf
11、o kr Aebod SystemI sncotaropr.de teDails fo teh softwacudorp erts sut deo crtaee this PDF file cna f ebi dnuon tlareneG eh Info leratit evo the file; tP ehDc-Frtaeion marapteres wetpo erimizf deoirp rnti.gn Evc yreasah er t neebakt neo snet erutah teh file is suitlbaf eosu rI yb eSO memdob rebeis. I
12、n tlnu ehikletneve y ttah lborp aem leratit gno it is f,dnuo plsaee inform ttneC ehlar Secrteiraat ta the serddaig sleb nevwo. ISO 5002 Athgir lls serevr.de selnUs towrehise specfidei, trap on fo thsi ilbupctanoi may cudorper ebtu ro dezilina ni dey fomr yb ro nam y,snae lecetrinoc m roecinahcal, in
13、clidung tohpcoiypom dna gnicrfoilm, wittuoh mrepissii non writif gnrmo ietI rehSta O tserdda ehs ebolw or ISOs memreb i ydobn the cnuotrfo y ttseuqer ehe.r ISO cirypothg fofice saCe tsopale 65 eneG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mail coirypthgiso.o gr We bwww.is.o gro
14、Pulbisdehi n Switlrez dna ii ISO 5002 Allr ithgsr esedevr BS ISO 205671:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:34:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS-76502 O1:(5002E) I SO 5002 All irthgs ersedevr iii Contents Page Forewordiv Introduction v 1 Scope 1 2 Normative
15、references . 1 3 Principle. 2 4 Apparatus 2 5 Materials. 3 6 Sampling 4 7 Test panels 4 8 Procedure 4 9 Evaluation 5 10 Precision 5 11 Test report . 6 Annex A (informative) Recommended procedure for calibration of test apparatus 10 BS ISO 205671:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon N
16、ov 27 08:34:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS-76502 O1:(5002E) iv I SO 5002 All irthgs ersedevr Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards i
17、s 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, also take par
18、t in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to p
19、repare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility tha
20、t 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. ISO 20567-1 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnis
21、hes. ISO 20567 consists of the following parts, under the general title Paints and varnishes Determination of stone-chip resistance of coatings: Part 1: Multi-impact testing Part 2: Single-impact test with a guided impact body BS ISO 205671:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27
22、 08:34:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS-76502 O1:(5002E) I SO 5002 All irthgs ersedevr v Introduction In 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 way that ind
23、ividual 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. Part 1 of this International Standard describes multi-impact testing, Part 2 describes a single-impact test. This part of ISO 20567 is based on
24、the German Standard DIN 55996-1:2001, Beschichtungsstoffe Prfung der Steinschlagfestigkeit von Beschichtungen Teil 1: Multischlagprfung (Paints and varnishes Stone chip resistance test for coatings Part 1: Multi impact test). NOTE A recommended procedure for calibration of the apparatus is given in
25、Annex A. Note that this annex is informative because the method described in it is not the only one suitable for checking whether a uniform impact pattern is produced. BS ISO 205671:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:34:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licens
26、ed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:34:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTENRATIONAL TSANDADR IS-76502 O1:(5002E) I SO 5002 All irthgs ersedevr 1 Paints and varnishes Determination of stone-chip resistance of coatings Part 1: Multi-impact testing 1 Scope This part of IS
27、O 20567 specifies three methods for the evaluation of the 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 references The following referenced documents are indispensable for the applic
28、ation 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 1513, Paints and varnishes Examination and preparation of samples for testing ISO 1514, Paints and varnishes Sta
29、ndard panels for testing ISO 2808, Paints and varnishes Determination of film thickness ISO 3270, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testing ISO 11124-2, Preparation of steel substrates before application of paints and related products Speci
30、fications for metallic blast-cleaning abrasives Part 2: Chilled-iron grit ISO 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 distribution ISO 15528, Paints, varnishes
31、 and raw materials for paints and varnishes Sampling ISO 21227-2, Paints and varnishes Evaluation of defects on coated surfaces using optical imaging Part 2: Evaluation procedure for multi-impact stone-chipping test IEC 60454-2, Specification for pressure-sensitive adhesive tapes for electrical purp
32、oses Part 2: Methods of test BS ISO 205671:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:34:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS-76502 O1:(5002E) 2 I SO 5002 All irthgs ersedevr 3 Principle The stone-chip resistance of the coating under test is checked by projecting a la
33、rge number of small sharp- edged bodies onto it in a short 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 caused will depend not only on the angle, but also on the pressure level
34、, the mass of the projectiles, the duration of the bombardment and the design of the test apparatus. Loose fragments of coating material are removed using adhesive tape. The extent of the damage is determined by comparison with pictorial reference standards. 4 Apparatus Ordinary laboratory apparatus
35、, plus the following: 4.1 Multi-impact tester Figures 1 and 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 that the grit feed speed can be varied. The apparatus
36、 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. Used grit can be taken from the grit-catching chambe
37、r after the test and used again to a limited extent (see 5.1). Key 1 solenoid valve 9 vibrating conveyor 2 compressed-air line 10 grit feed funnel 3 pressure reducer (to working pressure) 11 grit-accelerating pipe (accessible from back for replacement) 4 pressure chamber (capacity 90 l) 12 protectiv
38、e housing 5 manometer (indicates working pressure) 13 grit-catching chamber 6 air-accelerating nozzle 14 test panel 7 grit feed chute 15 test panel holder 8 grit feed pipe Figure 1 Multi-impact tester General view BS ISO 205671:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:34:23 GMT
39、+00:00 2006, Uncontrolled Copy, (c) BSI IS-76502 O1:(5002E) I SO 5002 All irthgs ersedevr 3 Key 1 pressure gauge measurement range: up to 400 kPa (= 4 bar) diameter of scale: 100 mm accuracy: class 1,0 5 grit feed pipe length: (205 3) mm inside diameter: (19 1) mm connected to grit-accelerating pipe
40、 at angle of (45 1) and distance of (35 1) mm from tip of air- accelerating nozzle 2 connecting pipe length: (190 1) mm inside diameter: (19 0,2) mm 6 jet of grit distance from grit-accelerating pipe to centre of test panel: (290 1) mm angle between axis of jet and test panel: (54 1) 3 air-accelerat
41、ing nozzle length: (80 1) mm inside diameter at entry: (19 0,2) mm inside diameter at exit: (7 0,2) mm 7 aperture 80 mm 80 mm window defining test area on test panel 4 flange and grit-accelerating pipe overall length: (352 2) mm inside diameter: (30 0,2) mm Figure 2 Multi-impact tester Detailed draw
42、ing and dimensions 5 Materials 5.1 Grit 1) The grit shall be chilled-iron grit conforming to the requirements of ISO 11124-2, except that the particle size, determined in accordance with ISO 11125-2, shall be 4 mm to 5 mm. The grit shall be replaced after a maximum of 100 test runs (i.e. after it ha
43、s been projected 100 times) or at the end of the series of tests during which the grit passes the point at which it has been used for a total of 100 test runs. 1) For information about grit suppliers, please contact the Normenausschuss Beschichtungsstoffe und Beschichtungen (NAB), at DIN, Burggrafen
44、strae 6, 10787 Berlin, Germany. BS ISO 205671:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:34:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS-76502 O1:(5002E) 4 I SO 5002 All irthgs ersedevr 5.2 Adhesive tape Unless otherwise agreed, adhesive tape with an adhesive strength between
45、 6 N/25 mm width and 10 N/25 mm width (determined in accordance with IEC 60454-2) shall be used. The tape shall be at least 50 mm wide. 6 Sampling Take a representative sample of the coating material to be tested, as described in ISO 15528. Examine and prepare each sample for testing, as described i
46、n ISO 1513. 7 Test panels 7.1 Substrate Unless otherwise agreed, use 200 mm 100 mm steel test panels that are between 0,7 mm and 1,0 mm thick. 7.2 Preparation and coating Unless otherwise agreed, prepare each test panel in accordance with ISO 1514 before coating and drying or stoving. Use the applic
47、ation method specified by the paint manufacturer. 7.3 Thickness of coating Determine the thickness, in micrometres, of the dry coating by one of the procedures specified in ISO 2808. 8 Procedure 8.1 Conditioning of the test panels Condition the test panels for at least 16 h at (23 2) C and (50 5) %
48、relative humidity before carrying out the test, unless otherwise agreed (see ISO 3270). 8.2 Test conditions Carry out the test at (23 2) C and (50 5) % relative humidity (see ISO 3270). NOTE Exceptionally, other test conditions may be agreed between the interested parties. 8.3 Projection of grit Loa
49、d the tester with 20 0 500g + of grit. Carry out the test using one of the sets of conditions given in Table 1. The method used shall be agreed between the interested parties. Weigh the grit after each test run (i.e. after each projection) and, if required, add grit to keep the total mass at 20 0 500g. + When the two test runs have been co