THE IMPACT OF SANDING SYSTEM ON THE SURFACE ROUGHNESS OF MEDIUM DENSITY FIBREBOARD

Year 2019, Volume: 1 Issue: 1, 27 - 32, 30.06.2019

Tanja Palija Milan Jaic İgor Dzincic

Abstract

This paper examines the impact of the sanding system on automatic sanding machine in real production conditions on the surface roughness of medium density fibreboard (MDF). The surface of samples was egalized by sanding on wide–belt sanding machine using P80 grit sanding belt. Afterwards, the samples were sanded on the 4 aggregate automatic sanding machine at sanding speed of 14 m/s in a two-step process with the following sanding belt grits: P120+P150 and P120+P180, using two conveyor speeds: 8 and 12 m/min. In the first stage of sanding, the samples were sanded by narrow belt aggregate, with sanding direction perpendicular towards the processing direction of sample in sanding machine. The second stage of sanding was conducted on the wide-belt aggregate, with sanding direction parallel towards the processing direction of sample in sanding machine. The surface roughness was measured by the contact-mechanical gauge and expressed by parameters Ra, Rz and Rt. As expected, results confirmed that sanding belt grit in the last stage of sanding had significant effect on the surface roughness of MDF. On the other hand, variation of speed of conveyor did not affect the surface roughness of MDF, for both combinations of sanding belt grits.

Keywords

MDF, Sanding, Surface roughness

References

• Ayrilmis N., Candan Z., Akbulut T. and Balkiz O.D. (2010). Effect of sanding on surface properties of medium density fiberboard. Drv Ind, 61, 175–181. Davim J.P., Clemente V.C. and Silva S. (2009). Surface roughness aspects in milling MDF (medium density fibreboard). Int J Adv Manuf Technol, 40, 49–55. de Moura L.F. and Hernández R.E. (2006). Effects of abrasive mineral, grit size and feed speed on the quality of sanded surfaces of sugar maple wood. Wood Sci Technol, 40, 517–530. de Sampaio Alves M.C., Santiago L.F.F.S., Gonçalves M.T., et al. (2015). Effects of belt speed, pressure and grit size on the sanding of Pinus elliottii wood. Cerne, 21, 45–50. Gurau L., Ayrilmis N., Benthien J.T., et al. (2017). Effect of species and grinding disc distance on the surface roughness parameters of medium density fiberboard. Eur J Wood Wood Prod, 75, 335–346. Gurau L., Mansfield-Williams H. and Irle M. (2007). Separation of processing roughness from anatomical irregularities and fuzziness to evaluate the effect of grit size on sanded European oak. For Prod J 57, 110–115. Hendarto B., Shayan E., Ozarska B., Carr R. (2006). Analysis of roughness of a sanded wood surface. Int J Adv Manuf Technol 28, 775–780. Janković, A. in “Površinska obrada drveta (Autorizovna skripta)”. Eds. Šumarski fakultet u Beogradu, Institut za preradu drveta (1975), pp. 6–7. Kiliç M., Burdurlu E., Aslan S., et al. (2009). The effect of surface roughness on tensile strength of the medium density fiberboard (MDF) overlaid with polyvinyl chloride (PVC). Mater Des 30, 4580–4583. Kilic M., Hiziroglu S. and Burdurlu E. (2006). Effect of machining on surface roughness of wood. Build Environ 41, 1074–1078. Laina R., Sanz-Lobera A., Villasante A., et al. (2017). Effect of the anatomical structure, wood properties and machining conditions on surface roughness of wood. Maderas Cienc y Tecnol 19 (2), 203–212. Magoss E. (2008). General Regularities of Wood Surface Roughness. Acta Silv Lign Hung 4, 81–93. Ozdemir T., Hiziroglu S. and Malkocoglu A. (2009). Influence of relative humidity on surface quality and adhesion strength of coated medium density fiberboard (MDF) panels. Mater Des 30, 2543–2546. Palija T., Jaić M., Šućur A., Dobić J. (2014). The impact of wood properties affected by sanding on the gloss of lacquered surfaces. In: PTF BPI - Processing Technologies for the Forest and Bio-based Products Industries, Salzburg University of applied Sciences, Kuchl/Austria, September 24-26, 2014, pp. 608-615. Ratnasingam .J, Reid H.F. and Perkins M.C. (2002). The abrasive sanding of Rubberwood (Hevea brasiliensis): an industrial perspective. Holz als Roh- und Werkst 60:191–196. Salcă E-A. and Hiziroglu S. (2012). Analysis of surface roughness of black alder as function of various processing parameters. Pro ligno 8, 68–79. Saloni D.E., Lemaster R.L. and Jackson S.D. (2005). Abrasive machining process characterization on material removal rate, final surface texture, and power consumption for wood. For Prod J 55, 35–42. Škaljić N., Lučić R., Čavlović A. and Obućina M. (2009). Effect of Feed Speed and Wood Species on Roughness of Machined Surface. Drv Ind 60, 229–234. Tan P.L., Sharif S. and Sudin I. (2012). Roughness models for sanded wood surfaces. Wood Sci Technol. 46 (1-3), 129-142. de Varasquim A., Estudo F.M.F., de Sampaio Alves M.C, et al. (2012). Influence of belt speed, grit sizes and pressure on the sanding of Eucalyptus grandis wood. Cern Lavras 18, 231–237. Wilkowski J., Czarniak P. and Górski J., et al. (2015.) Influence of cutting parameters on surface roughness of MDF board after milling and sanding. Ann Warsaw Univ Life Sci - SGGW 92, 473–476.
• Web sites: Web-1: https://www.siaabrasives.com/download/ Web-2: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=2ahUKEwi3j4L LvcHcAhXQz4UKHYRmAPAQFjAAegQIABAC&url=http%3A%2F%2Fwww1.gantep.edu.tr%2F~bozdana%2FME472_5.pdf&usg=AOvVaw3US6zW-XS0LHuqRkKU-pH9