EN 324-2-1993 en Wood-Based Panels - Determination of Dimensions of Boards - Part 2 Determination of Squareness and Edge Straightness《木基板 板尺寸测定 第2部分 垂直度和边缘平直度测定》.pdf

1、I. CEN ENr324-2 93 m 3404589 0043832 42b m EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 324-21993 February 1993 - UDC 674.815:531.74 oescnptors: Wood-based penei, fibraboard, PCrrciceboad. plyWood, OsB. nt-onded particleboard, test method, dimensions of bods. rquareness, dge straightness Eng

2、lish wrsion Wood-based panels - Determination of dimensions of boards - Part 2: Determination of squareness and edge straightness Pannewx i bue de bois - Dtermination des diunrians des pmnewx - Partie 2: tmimtion de liqucrrage et de la rectitude des bods Holmrkstoffe - Bestimmung dtr Plattmilk - Tei

3、l 2: -ti- der Rechtuinkligkeit und der Kntengerdhci t This European Standard was approved by CEN on 1992-12-15. c8N mehers are bound to comply with the CEN/CENELEC Internal Regulations hich stipulate the conditions foc giving this European Standard the status of a national standard without any alter

4、ation. Up-to-date lists rid bibliographiul references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN er. The European Standards exist in three official versions (English, French, German). A versim in any other language d by translation unde

5、r the responsibility of a CH member into its oun language and notified to the Central Secretariat has the saue status as the official versions. CEM mbtrs are the national standards bodies of Austria, Belgium, Denark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, LuxCabourg, Netherlands,

6、 Norway, Portugal, Spain, Sueden, Switzerland ancl united Ki. CEN Europsan Coritto for Standardization mit Europen de Momnlisation Europiischcr mitet fr Moraung * 1993 Copyright reserved to CEN mbcrs Ref. No. EN 321-2:1993 E 7 Page 2 EN 324-2:1993 CEN ENx324-2 73 = 3404587 0043833 362 1 2 3 4 5 6 7

7、8 9 10 .- *opa * Nonrtiw references .*. Principle supling * Moisture content at tim of measurement Conditioning .*. Apparatur Procare .* Expnuion of nrults . . *. Tost report-. . * Annex A (informative) Bibliography . 4 4 1 4 4 4 5 5. 6 6 7 i Page 3 EN 324-2:1993 Foreword niu Euopean Standard was pr

8、epared by Working Group 4 Common test methods (Secretariat: United Kingdom) of Techical Committee CEN/TC 112, Woobbssed panels (Seastanat: Germany). The text is based on IS0 9426-2 wich has been elaborated with Euopean partiaption. This standard is one of a sedes of standards specifying methods of t

9、est for determining dimembns and proparties of wood- based panels. No exisng European Standard is superseded. This Euopean Standard shall be given the status of a national standSrd. Sither by publication of an identical text or by endorsement, at the latest by August 1993, and conflicting tinsl stan

10、dards shall be withbawn at the latest by December 1994. In accordance with he CENICENELEC Internal Regulations, the fdlowing countries are bound to implement this Evopaan Standard: Ausia. BaiQum, Denmark Finland. France. Gmny. Greece, Iceland, keland, itaty. Lwemboug, Netherlands, Nawav, Poraigal. S

11、pain, Sweden, Swtzerand, United Uingcbm. Page 4 EN 324-2:1993 1- CEN ENx324-2 93 3404589 0043835 335 = mis uropn standard specifies methods for measuring the squareneas and edge straightness of waod-tnrad panels. It applies to whole flat boards. lhe methods for the determination of thickness, width

12、nd length are specified in EN 324-1. 2 Worutivereferences This European St8nd8rd incorporates by date or und8ted refennce, provisions from Other publications. Thaw normative references are cited at the appropriate places in the text and the publications an listed han- after. For dited references. su

13、bsequent amendments to or revisions of any of thara publications apply to this Europa ftandird, only iIian incorporated in it y 8ndmnt or revision. For undated references the. latest adition of the publication referred to applies. EN 322 Wood-bad -1s - ktdmtion of cioistun content 3 Principle mhanic

14、al square or straight edge. SqWSS 8d str8ightness Of full Sin hrdr i8 detariliind by #.rUM#nt Of davi8tiOn frol 8 - 4 srrplino Sugling of putels shall be in .ccocdance with EN 326-1. s mis- ton- at tim of laoum#nt Worully hrds are mewurad in tha as-received state. If necessary the moisture content o

15、f the boards shall be eteriicnd in ucodmce with 81 322. 6 conditioning If required. th. borrdr shall k eonditiwd to constant MIS in an 8twspRare with a relative huidity of tno sueeauive weighing og.r8tions, arriad out at an intannl of 24 h, do not differ by mon thin 0.1 t of tha WlSi of the hrd. (65

16、 5) % .nd 8 t-rtUIW Of (20 f 2) Oc. COnStiult .16S coci.idelWd t0 be mch.d whrn the #OSUltS Of 1) At present at the draft stage CEN ENx324-2 93 3404589 0041836 071 Page 5 - EN 324-2:1993 7.1 nb.wrtm fW 1- uid Width m-t .-. Steel maturing tape graduated to at least 1 - A mechanical square h.ving two

17、.-.Of lo00 mm.t I (I for iaUUring tile dcvi8tiOiI Of the angin of .dj.ccnt sides of a board from a right angle. It shall k accurate to 0.2 mm in i000 I (see figure I). 7.3 stnightdga A stmightedge Of length at 1e-t tqwl to the length of the mid, or wire Of mt.nt m-ectioft urd flexible enough to be s

18、tretched to assure linmrity. 1.4 Steel rule. or cr14p.s for drvl8tion A steel rule, uedge or caliper griduiMd to at least 0,5 m. 1.1.1 (see figure 2). Place OM ride of the square against one side of the -rd the squarenesr of which is ta e measured Page 6 . EN 324-2:1993 8.1.2 At 8 dict8nce of board

19、edge and the sCde 7.4 (MC figure 2). CEN EN*324-2 93 3404589 0043837 TO8 10 am f 1 II froa cr o the board. measure the distance 61 between the of thm other arm of the square by means of OM of the measuring devices specifid -1 in I 1000:r 9 Expcion of results 9.1 sqwrmartofboirdr lhe result is th. 1.

20、cgci.t measured nlw of the deviation of the si& of the %quam and the bord edge. It Sr expmsed in mm over 1 a bo8rd edge-length (II/m) to 0,s rh. 9.2 Stnightimr of lb result, expressed up.mtely foc width 8n length, in -/m, ir the hrgef v81w of the ne8sured devia- tiom divided by the length of the .pp

21、ropriate cdgh. 10 Test report As described in EN 326-1. CEN EN*324-2 93 m 3404589 0041838 944 = Page 7 EN 324-2:1993 Amwx A (inforutiw) 8ibliography EN 309 EN 313-1 EN 316 EN 324-1 EN 633 Is0 9426-2 Partlcltboards - Otfinition and classification Plywood - classification and terainology Part 1: Class

22、ification Fibreboards - efinltion, ciassification and synbos woad-acd pMl$ - Oatmimtion of diwntim of diwirsioris of bords Part 1: eternination of thickness, width and length kwnt-bonded particlemrds - efinition and classificathn 1) wood-based panels -.Oatmination of dinsiom of boards - Datmination of squarcmss and edge straightness *) 1) At present at the drift stage 2) At present at the staga of draft poposal