《DD-CEN-TS-15186-2005.pdf》由会员分享，可在线阅读，更多相关《DD-CEN-TS-15186-2005.pdf（18页珍藏版）》请在三一文库上搜索。
1、DRAFT FOR DEVELOPMENT DD CEN/TS 15186:2005 Furniture Assessment of the surface resistance to scratching ICS 97.140 ? Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 07:28:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD CEN/TS 15186:2005 This Draft for Developme
2、nt was published under the authority of the Standards Policy and Strategy Committee on 23 January 2006 BSI 23 January 2006 ISBN 0 580 47499 2 National foreword This Draft for Development is the official English language version of CEN/TS 15186:2005. This publication is not to be regarded as a Britis
3、h Standard. It is being issued in the Draft for Development series of publications and is of a provisional nature because the subject is still under technical development. It should be applied on this provisional basis, so that information and experience of its practical application may be obtained.
4、 Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the European organization responsible for its conversion to a European standard. A review of this publication will be initiated 2 years after its publication by the European organizati
5、on so that a decision can be taken on its status at the end of its 3-year life. Notification of the start of the review period will be made in an announcement in the appropriate issue of Update Standards. According to the replies received by the end of the review period, the responsible BSI Committe
6、e will decide whether to support the conversion into a European standard, to extend the life of the Technical Specification or to withdraw it. Comments should be sent in writing to the Secretary of BSI Technical Committee FW/1, Common test methods for furniture, at British Standards House, 389 Chisw
7、ick High Road, London W4 4AL, giving the document reference and clause number and proposing, where possible, an appropriate revision of the text. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement
8、international or European publications referred to in this 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
9、 purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a Draft for Development does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the CEN
10、/TS title page, pages 2 to 15 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 07:28:02 GM
11、T+00:00 2006, Uncontrolled Copy, (c) BSI TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 15186 November 2005 ICS 97.140 English Version Furniture - Assessment of the surface resistance to scratching Ameublement - Evaluation de la rsistance de la surface la rayure Mbel
12、- Bewertung der Kratzfestigkeit von Oberflchen This Technical Specification (CEN/TS) was approved by CEN on 1 October 2005 for provisional application. The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comm
13、ents, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available promptly at national level in an appropriate form. It is permissible to kee
14、p conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Gre
15、ece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centr
16、e: rue de Stassart, 36 B-1050 Brussels 2005 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 15186:2005: E Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 07:28:02 GMT+00:00 2006, Uncontrolle
17、d Copy, (c) BSI 2 Contents page Foreword 3 1 Scope.4 2 Normative references .4 3 Terms and definitions.4 4 Principle.5 5 Apparatus and materials 5 6 Preparation and conditioning 7 7 Procedure8 8 Assessment of results10 9 Test report.11 Annex A (informative)12 Bibliography.15 CEN/TS 15186:2005 Licens
18、ed Copy: London South Bank University, London South Bank University, Tue Dec 12 07:28:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 Foreword This Technical Specification (CEN/TS 15186:2005) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the secretariat of which is held by UNI. Ac
19、cording to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to announce this CEN Technical Specification: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lat
20、via, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. CEN/TS 15186:2005 Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 07:28:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 1
21、 Scope This Technical Specification specifies a method for the assessment of the surface resistance to penetrating and distinctive scratch marks and relates to rigid surfaces of all finished products regardless of materials. It does not apply to finishes on leather and fabrics. The test is intended
22、to be carried out on finished furniture, but can 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 the requirements of the test. It is essential that the test be carried out on unused surfaces. It is not appl
23、icable for the determination of the surface resistance to insubstantial/light scratch. NOTE The surface resistance to insubstantial/light scratch damage can be determined using the method in EN 438-2. 2 Normative references The following referenced documents are indispensable for the application of
24、this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 1518, Paints and varnishes - Scratch test (ISO 1518:1992) 3 Terms and definitions For the purposes of this Technical S
25、pecification, the following terms and definitions apply. 3.1 test unit finished item of furniture 3.2 test surface part of the test unit, where the test area is included 3.3 test panel panel produced in the same way as the test surface; it should be used when it is not possible to carry out the test
26、 directly on the test surface 3.4 test area area under the equipment, where the measurement is carried out 3.5 test atmosphere atmosphere where the test is carried out 3.6 scratching tip needle with a point of defined geometry, see 5.3 CEN/TS 15186:2005 Licensed Copy: London South Bank University, L
27、ondon South Bank University, Tue Dec 12 07:28:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 5 3.7 scratching trace 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
28、and coating type as shown in Figures 3, 4, 5 and 6 3.8 scratching resistance minimum load, in N, applied to the scratching tip, which produces a measurable width trace (W) of 0,30 mm (Method A) or 0,50 mm (Method B) 3.9 preliminary assessments of the scratching resistance minimal load causing the sp
29、ecified trace on one test surface 3.10 intermediate assessment of scratching resistance mean value of preliminary assessments of the scratching resistance 3.11 final value of scratching resistance mean value of intermediate assessments of three test surfaces (see Figure A.2) 4 Principle Surface scra
30、tching resistance is defined as the minimum load, in N (Newtons), applied to the tip with specified geometry, which produces a specified scratch width. The width of the scratching trace is the result of the assessment of the series of scratches produced by the tip. 5 Apparatus and materials 5.1 Test
31、 apparatus Equipment for linear, without hand movement of the scratching tip or the test surface, according to the principle of EN ISO 1518. 5.2 Equipment parameters The technical parameters of the apparatus shall be as specified in Table 1. Table 1 Technical parameters Parameter Description Movemen
32、t Linear, without hand movement Load range (N) 1-20 Increment of load (N) 1,0 0,1 Speed of the movement (mm/s) 20 10 Scratching trace length (mm) Minimum 22 CEN/TS 15186:2005 Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 07:28:02 GMT+00:00 2006, Uncontrolled C
33、opy, (c) BSI 6 5.3 Scratching tip 5.3.1 Method A Scratching tip made of carbon carbide, with radius (R) of (0,30 0,01) mm. The coupling between the spherical part of the tool and the truncated cone section, shall allow that the width of the trace produced by the tool on the test area will be higher
34、than 0,30 mm without the disturbing of 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 shall be checked before using (see 6.3). Key tips angle =
35、60,0 1,0 Rk radius of tips rounded part Rk = 0,30 mm 0,01 mm Figure 1 Scratching tip 5.3.2 Method B Scratching tip made of carbon carbide, with radius (R) of (0,50 0,01) mm. The coupling between the spherical part of the tool and the truncated cone section, shall allow that the width of the trace pr
36、oduced by the tool on the test area will be higher than 0,50 mm without the disturbing of this truncated cone section. 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 shall be checked before use (see 6.3). 5.4 Optical m
37、easurement equipment Any suitable equipment (e.g. microscope, magnifier with image analysis system) for measurement of traces width with +/- 0,01 mm accuracy and for assessment of the scratching tips geometry. 5.5 Suitable illumination Suitable illumination for measurement of traces width with +/- 0
38、,01 mm accuracy. CEN/TS 15186:2005 Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 07:28:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 7 5.6 Conditioning chamber A chamber with a standard atmosphere of (23 2) C, relative humidity (50 5) %. 5.7 Cleaning cloth Whi
39、te soft absorbent cloth. 6 Preparation and conditioning 6.1 Storing and conditioning The test unit / test panel shall be stored for not less than four weeks at a temperature not less than 15 C and not more than 30 C with free access of air. Conditioning of test surface shall begin one week before te
40、sting and shall be carried out in air at a temperature of (23 2) C and relative humidity of (50 5) %. NOTE This week can be part of the four weeks storage. 6.2 Test surface Three test surfaces shall be prepared. The test surface shall be taken at least 20 mm from the edge. Each test surface shall be
41、 a piece of the test unit or test panel, shaped to fit the type of clamping device used. The test surface shall be carefully wiped with a cleaning cloth, see 5.7, before the test. The test surface shall be substantially flat. The surfaces of the three test surfaces will be homogenous (e.g. wood grai
42、n and structure). 6.3 Checking of the tips geometry The scratching tip, shall be inspected before each test with the use of the optical measurement equipment to obtain an accuracy of 0,01 mm and 1 . If any flatness, holes, mass losses or other kind of damages are found, see Figure 2, the scratching
43、tip shall be rejected and replaced by a new one. Figure 2 Shape of the tip before use CEN/TS 15186:2005 Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 07:28:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 8 7 Procedure 7.1 Checking of scratching tip Check the geo
44、metry of the scratching tip according to 6.3 before each series of tests. If any flatness, holes, mass losses or other kind of damages are found, a new tip shall be used. 7.2 Scratching of test area 7.2.1 General Place the test apparatus, see 5.1, and the test surface in a horizontal position with t
45、he needle perpendicular to the test surface. 7.2.2 Method A For each test surface, repeat the scratch test 3 times and record the results rounded to 0,05 mm, see the protocol example in Table A.1. The scratches shall be carried out across to the grain direction, if any. The first scratch load should
46、 be 1,0 N and shall continue in increments of 1,0 N, until continue 20,0 N, or until the scratch width is 0,30 mm, whichever is reached first. The determination of the width of the scratches on the second and third test surface can normally begin 3,0 N below the load obtained for the first test surf
47、ace. The distance between two adjacent scratching traces shall be at least 5 mm and between the scratching trace and the edge of the test surface at least 20 mm. 7.2.3 Method B For each test surface, repeat the scratch test 3 times and record the results rounded to 0,05 mm, see the protocol example
48、in Table A.1. The scratches shall be carried out across to the grain direction, if any. The first scratch load should be 1,0 N and shall continue in increments of 1,0 N, until continue 20,0 N, or until the scratch width is 0,50 mm, whichever is reached first. The determination of the width of the sc
49、ratches on the second and third test surface can normally begin 3,0 N below the load obtained for the first test surface. The distance between two adjacent scratching traces shall be at least 5 mm and between the scratching trace and the edge of the test surface at least 20 mm. 7.3 Determination of scratching resistance After 24 h, three observers shall measure all of the scratching traces width using the optical measurement equipment,