1、-XO7UDQVODWLRQE,16SUDFKHQGLHQVW(QJOLVKSULFHJURXS1RSDUWRIWKLVWUDQVODWLRQPDEHUHSURGXFHGZLWKRXWSULRUSHUPLVVLRQRI,1HXWVFKHV,QVWLWXWIU1RUPXQJH9%HUOLQ%HXWK9HUODJ*PE+%HUOLQ*HUPDQKDVWKHHFOXVLYHULJKWRIVDOHIRU*HUPDQ6WDQGDUGV ,11RUPHQ , b) two test methods have been specified: linear method A and circular meth
2、od B; c) Annex A (informative) “Checking of the tip, calculation of final result and example of protocol to record the results” has been added. Compared with DIN CEN/TS 15186:2006-02 the following changes have been made: a) two test methods are described: method A is suitable for all types of surfac
3、e coatings except for melamine faced boards and HPL. It simulates measurable penetrating and/or deforming scratches; method B is suitable for all types of surface. It simulates first visible scratches which may only be a change of gloss; b) the former linear method B has been deleted as the same eff
4、ects can be achieved with linear method A; c) a suitable illumination for measurement of the traces width with 0,05 mm accuracy has been specified; d) specifications relating to the storing of the test unit/test panel have been deleted; e) the scratching tip is to be checked at least every series of
5、 1 000 tests, using the optical measurement equipment ; f) the number of observers has been changed. Previous editions DIN 68861-4: 1981-12, 2011-01 DIN CEN/TS 15186: 2006-02 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15186 April 2012 ICS 97.140 Supersedes CEN/TS 15186:2005English Version
6、Furniture - Assessment of the surface resistance to scratching Ameublement - Evaluation de la rsistance de la surface la rayure Mbel - Bewertung der Kratzfestigkeit von Oberflchen This European Standard was approved by CEN on 8 March 2012. CEN members are bound to comply with the CEN/CENELEC Interna
7、l Regulations 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 CE
8、N member. 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 versi
9、ons. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slo
10、venia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide
11、for CEN national Members. Ref. No. EN 15186:2012: EEN 15186:2012 (E) 2 Contents Page 1 Scope 52 Normative references 53 Terms and definitions .54 Linear method (method A) 64.1 Principle 64.2 Apparatus and materials .74.2.1 Test apparatus .74.2.2 Equipment parameters 74.2.3 Scratching tip .74.2.4 Opt
12、ical measurement equipment .84.2.5 Suitable illumination 84.2.6 Conditioning chamber .84.2.7 Cleaning cloth 84.3 Preparation and conditioning .84.3.1 Conditioning .84.3.2 Test surface 84.3.3 Checking of the tips geometry 84.4 Test Procedure .94.4.1 General 94.4.2 Scratching of test area 94.4.3 Deter
13、mination of scratching resistance 94.5 Assessment of results . 115 Circular method (method B) 115.1 Principle . 115.2 Apparatus and materials 115.2.1 Test apparatus 115.2.2 Viewing cabinet . 135.2.3 Template 145.2.4 Conditioning chamber 155.2.5 Cleaning cloth . 155.3 Preparation and conditioning 155
14、.3.1 Conditioning 155.3.2 Test surface . 155.4 Test procedure 165.5 Assessment of results . 165.6 Expression of results . 176 Test report . 17Annex A (informative) Checking of the tip, calculation of final result and example of protocol to record the results 19A.1 Checking of the tip 19A.2 Calculati
15、on of Final Result . 19A.3 Example of Protocol to record the results . 21Annex B (informative) Significant technical changes in revised edition of this standard . 22Bibliography . 23,1(1. 4ForewordEN 15186:2012 (E) 3 Figures Figure 1 Scratching tip of the cone type . 7Figure 2 Shape of the tip befor
16、e use 9Figure 3 Example of a type of apparatus for determination of resistance to scratching . 12Figure 4 Diamond scratching tip 13Figure 5 Example of suitable viewing cabinet 14Figure 6 Template 15Figure 7 Template 17Figure A.1 Nominal geometry of the tips used in the scratching test method evaluat
17、ion . 19Figure A.2 The way of the expression of scratching resistance final results N for one type of material . 20Tables Table 1 Technical parameters. 7Table 2 Examples of scratch patterns . 10Table A.1 Protocol of scratching trace width measurement . 21,1(1EN 15186:2012 (E) 4 Foreword This documen
18、t (EN 15186:2012) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the secretariat of which is held by UNI. 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 2012, and confli
19、cting national standards shall be withdrawn at the latest by October 2012. 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 docume
20、nt supersedes CEN/TS 15186:2005. Regarding the significant technical changes that have been made in this new edition of EN 15186, see the informative Annex B. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement thi
21、s European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland
22、, Turkey and the United Kingdom. ,1(1EN 15186:2012 (E) 5 1 Scope This European Standard specifies a method for the assessment of the surface resistance to penetrating scratches. It relates to the rigid surfaces of all finished products, regardless of their material. It does not apply to finishes on
23、leather and fabrics. Method A is suitable for all types of surface coatings and coverings except for melamine faced boards (according to EN 14322) and HPL (according to EN 438-1). It simulates measurable penetrating and/or deforming scratches. Method B is suitable for all types of surfaces. It simul
24、ates first visible scratches that may only be a change in the gloss. The test is intended to be carried out on a part of finished furniture. It can however be carried out on test panels of the same material, finished in an identical manner to the finished product, and of a size sufficient to meet th
25、e requirements of the test. It is essential that the test be carried out on unused surfaces. 2 Normative references The 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 applie
26、s. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 1518-1, Paint and varnishes Determination of scratch resistance Part 1: constant loading method (ISO 1518-1) 3 Terms and definitions For the purposes of this document, the following te
27、rms and definitions apply. 3.1 test surface part of the test panel 3.2 test panel panel including the test surface Note 1 to entry: The panel may be cut from a finished item of furniture or it may be a separate panel produced in the same manner as the finished item of furniture. 3.3 test area part o
28、f the test surface under the equipment, where the measurement is carried out 3.4 scratching tip 3.4.1 method A needle with a point of defined geometry ,1(1EN 15186:2012 (E) 6 Note 1 to entry: See 4.2.3. 3.4.2 method B needle with a point of defined geometry Note 1 to entry: See 5.2.1.6. 3.5 scratchi
29、ng trace 3.5.1 method A visible and measurable mark on the tested surface which is produced under the specified load of the scratching tip; the shapes of the traces can be different depending on the substrate and coating type as shown in Table 2 3.5.2 method B first visible scratches which may only
30、be a change in the gloss 3.6 scratching resistance 3.6.1 method A minimum load, in N, applied to the scratching tip, which produces a measurable width trace (W) of 0,30 mm 3.6.2 method B minimum load, in N, applied to the scratching tip, which produces a continuous visible mark 3.7 preliminary asses
31、sments of the scratching resistance (method A) minimum load causing the specified trace on one test surface 3.8 intermediate assessment of scratching resistance (method A) mean value of preliminary assessments of one test surface 3.9 final value of scratching resistance (method A) mean value of inte
32、rmediate assessments of three test surfaces Note 1 to entry: See Figure A.2 in the informative Annex A. 4 Linear method (method A) 4.1 Principle Surface scratching resistance is defined as the minimum load in N (Newtons) applied to the tip with specified geometry, which produces a specified scratch
33、width (see 4.4.2). The width of the scratching trace is the result of the assessment of the series of scratches produced by the tip. ,1(1EN 15186:2012 (E) 7 4.2 Apparatus and materials 4.2.1 Test apparatus 4.2.1.1 Equipment for linear, without hand movement of the scratching tip or the test surface,
34、 according to the principle of EN ISO 1518-1. 4.2.2 Equipment parameters Technical parameters of the apparatus shall be as specified in Table 1. Table 1 Technical parameters Parameter Description/values Tip/test surface movement Linear Load range (N) 1,0 - 20,0 Increment of load (N) 1,0 0,1 Speed of
35、 the tips/test surface movement (mm/s) 20 10 Travel length of the tip or test surface (mm) Minimum 22 4.2.3 Scratching tip Scratching tip made of diamond, with a radius (R) of (0,30 0,01) mm. The coupling between the spherical part of the tool and the truncated cone section shall allow the width of
36、the trace produced by the tool on the test area to be higher than 0,30 mm, without disturbing this truncated cone section. An example of this tool is shown in Figure 1. The tip shall be mounted in the holder with the flat part on the leading side of the shank facing the working direction. The tip sh
37、all be checked before use (see 4.3.3). Key tips angle = (60,0 1,0) Rkradius of tips rounded part Rk= (0,30 0,01) mm Figure 1 Scratching tip of the cone type ,1(1EN 15186:2012 (E) 8 4.2.4 Optical measurement equipment Any suitable equipment (e.g. a microscope) for measuring the traces width with 0,05
38、 mm accuracy and for assessment of the scratching tips geometry with 0,01 mm accuracy. 4.2.5 Suitable illumination Suitable illumination for measurement of the traces width with 0,05 mm accuracy. 4.2.6 Conditioning chamber A chamber with a standard atmosphere of (23 2) C and relative humidity of (50
39、 5) %. 4.2.7 Cleaning cloth White, soft, absorbent cloth. 4.3 Preparation and conditioning 4.3.1 Conditioning Conditioning of the test surface shall begin at least one week before testing, and shall be carried out in air with a temperature of (23 2) C and relative humidity of (50 5) %. The condition
40、ing time shall be stated in the test report. NOTE Some finishing systems may not have achieved full cure after one week of conditioning. 4.3.2 Test surface Three test surfaces shall be prepared. The test surface taken shall be at least 20 mm from the edge. Each test surface shall be a piece of the t
41、est panel, shaped to fit the type of clamping device used. The test surface shall be carefully wiped with a cleaning cloth (see 4.2.7) before the test without scratching the surface. The test surface shall be largely flat. 4.3.3 Checking of the tips geometry The scratching tip shall be inspected vis
42、ually before each test (see Figure 2). The scratching tip shall be checked using the optical measurement equipment to obtain an accuracy of 0,01 mm and 1 , at least every series of 1 000 tests. In both cases, if any flatness, holes, mass losses or other kind of damages are found, the scratching tip
43、shall be rejected and replaced by a new one. ,1(1EN 15186:2012 (E) 9 Figure 2 Shape of the tip before use 4.4 Test Procedure 4.4.1 General Check the geometry of the scratching tip according to 4.3.3. Place the test apparatus (see 4.2.1) in a horizontal position to the test surface, with the tip perp
44、endicular to the test surface. Carry out the test in a conditioned atmosphere of (23 2) C and (50 5) % R.H. 4.4.2 Scratching of test area For each test surface, repeat the scratch test and record the results of width measurements rounded to 0,05 mm (see the protocol example in Table A.1). The scratc
45、hes shall be carried out across the grain direction, if applicable. Start the test with the first test surface with a load of 1,0 N and continue with increments of 1,0 N, until 20,0 N, or until the scratch width is 0,30 mm, whichever is reached first. NOTE The determination of the width of the scrat
46、ches on the second and third test surface can normally begin 3,0 N below the load found for the first test surface. The distance between two adjacent scratching traces shall be at least 5 mm, and at least 20 mm between the scratching trace and the edge of the test surface. 4.4.3 Determination of scr
47、atching resistance The determination of scratching resistance shall be established by one observer experienced in this type of assessment, by measuring, after 24 h, all the scratching trace widths using the optical measurement equipment (see 4.2.4). In case of a dispute, three experienced observers shall carry out the determination.
