DIN EN 325-2012 Wood-based panels - Determination of dimenions of test pieces German version EN 325 2012《木质板料 试样尺寸测定》.pdf

1、June 2012 Translation by DIN-Sprachendienst.English price group 6No 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 79

2、.060.01!$|d“1896556www.din.deDDIN EN 325Wood-based panels Determination of dimen ion of test piecesEnglish translation of DIN EN 325:2012-06Holzwerkstoffe Bestimmung der Mae der PrfkrperEnglische bersetzung von DIN EN 325:2012-06Panneaux base de bois Dtermination des dimensions des prouvettesTraduct

3、ion anglaise de DIN EN 325:2012-06SupersedesDIN EN 325:1993-08www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 8 pagesss05.12 DIN EN 325:2012-06 2 A comma is used as the decimal marker. National foreword This standard has been prepared b

4、y Technical Committee CEN/TC 112 “Wood-based panels” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Holzwirtschaft und Mbel (Timber and Furniture Standards Committee), Working Committee NA 042-02-15 AA Spiegelausschuss zu CEN/TC 112 und I

5、SO/TC 89 Holzwerkstoffe. Amendments This standard differs from DIN EN 325:1993-08 as follows: a) for thickness measurement as described in 4.1 the measuring surface diameter has been changed from (16 1) mm to between 15 mm and 20 mm; b) for length and width measurement as described in 4.2 the minimu

6、m measuring surface width has been changed from 5 mm to 3 mm. Previous editions DIN 52350: 1943-10, 1953-09 DIN 52373: 1977-08 DIN EN 325: 1993-08 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 325 March 2012 ICS 79.060.01 Supersedes EN 325:1993English Version Wood-based panels - Determination

7、 of dimensions of test pieces Panneaux base de bois - Dtermination des dimensions des prouvettes Holzwerkstoffe - Bestimmung der Mae der Prfkrper This European Standard was approved by CEN on 11 February 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate

8、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. This European Standa

9、rd 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 members are the natio

10、nal 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, Slovenia, Spain, Sweden, Switzerl

11、and, 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 for CEN national Members. Ref.

12、 No. EN 325:2012: EEN 325:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Principles 44 Apparatus .44.1 Instrument for thickness measurement 44.2 Instrument for length and width measurement 45 Test pieces .45.1 Sampling and cutting 45.2 Dimensions .45.3 Conditioning .46 Procedu

13、re .56.1 Measuring points .56.2 Thickness measurement .56.3 Length and width measurement .57 Test report 5Bibliography 6DIN EN 325:2012-06 EN 325:2012 (E) 3 Foreword This document (EN 325:2012) has been prepared by Technical Committee CEN/TC 112 “Wood-based panels”, the secretariat of which is held

14、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 September 2012, and conflicting national standards shall be withdrawn at the latest by September 2012. Attention is drawn to the possibility

15、 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 325:1993. Compared to EN 325:1993 the following modifications have been made: a) for thickness

16、measurement in 4.1 measuring surface diameter changed from (16 1) mm to 15 mm to 20 mm; b) for length and width measurement in 4.2 minimum measuring surface width changed from 5 mm to 3 mm. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following count

17、ries are bound to implement this 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, Slove

18、nia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 325:2012-06 EN 325:2012 (E) 4 1 Scope This European Standard specifies a method for measuring the thickness, length and width of test pieces of wood-based panels. 2 Normative references The following documents, in whole or in par

19、t, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 326-1, Wood-based panels Sampling, cutting and

20、inspection Part 1: Sampling and cutting of test pieces and expression of test results 3 Principles The length and width of test pieces are determined by linear measurement. 4 Apparatus 4.1 Instrument for thickness measurement Micrometer, or similar measuring instrument, having flat and parallel circ

21、ular measuring surfaces of 15 mm to 20 mm diameter and an operation force of (4 1) N. The graduation of the apparatus shall allow a reading to 0,01 mm. 4.2 Instrument for length and width measurement Sliding calliper, or any other instrument with measuring surfaces of at least 3 mm width, graduated

22、to allow a reading to 0,1 mm. 5 Test pieces 5.1 Sampling and cutting Carry out the sampling and cutting in accordance with EN 326-1. 5.2 Dimensions The dimensions of the test pieces shall be in accordance with those specified in the relevant test method. 5.3 Conditioning The test pieces shall be con

23、ditioned to constant mass in an atmosphere with a relative humidity of (65 5) % and a temperature of (20 2) C. Constant mass is considered to be reached when the results of two successive weighing operations, carried out at an interval of 24 h, do not differ by more than 0,1 % of the mass of the tes

24、t piece. DIN EN 325:2012-06 EN 325:2012 (E) 5 6 Procedure 6.1 Measuring points The number and positions of the measuring points shall be in accordance with the relevant European Standard for test methods. 6.2 Thickness measurement Apply the measuring surfaces of the instrument slowly to the test pie

25、ce. Measure the thickness to 0,01 mm. 6.3 Length and width measurement For measuring the length and width, apply the jaw of the sliding calliper slowly and without excessive pressure to the test piece, at an angle of approximately 45 to the plane of the test piece (see Figure 1). Figure 1 Inclination of sliding calliper to plane of test piece Measure the length and width to 0,1 mm. 7 Test report As described in EN 326-1. DIN EN 325:2012-06 EN 325:2012 (E) 6 Bibliography ISO 9424:2003, Wood-based panels Determination of dimensions of test pieces DIN EN 325:2012-06