EVALUATION OF SURFACE QUALITY AFTER PROFILED MILLING OF ALDER AND BIRCH WOOD

Emilia-Adela SALCA
Lecturer Eng. - Universitatea "Transilvania" din Brasov - Facultatea de Industria Lemnului
Address: B-dul Eroilor nr. 29, 500036 Brasov, Romania
Tel: +40 268 412921/int.192. Fax: +40 268 415315
E-mail: emilia.salca@unitbv.ro

Adriana FOTIN
Lecturer Eng. - Universitatea "Transilvania" din Brasov - Facultatea de Industria Lemnului
Address: B-dul Eroilor nr. 29, 500036 Brasov, Romania
Tel: +40 268 412921/int.192. Fax: +40 268 415315
E-mail: adrianafotin@unitbv.ro

Ivan CISMARU
Prof.Dr.Eng. - Universitatea "Transilvania" din Brasov - Facultatea de Industria Lemnului
Address: B-dul Eroilor nr. 29, 500036 Brasov, Romania
Tel: +40 268 412921/int.192. Fax: +40 268 415315
E-mail: icismaru@unitbv.ro

Abstract: The present paper presents a comparative study upon the quality evaluation of profiled surfaces obtained by milling, for alder and birch wood, as well as the influence of the processing regime upon the surface roughness. The samples were profiled milled on the vertical milling machine type MNF10, endowed with mechanical feed device. Rotation speed, feed speed and cutting depth were the regime variable parameters.
The roughness of profiled surfaces was measured along the processing direction by using an optical profilometer FRT (Fries Research Technology). The study was mainly focused upon the quality evaluation of profiled surfaces through the analysis of the total profile and its component areas as well. The study demonstrates that a good quality of the profiled surfaces can be obtained when using feed speeds and cutting depths as low and light as possible. The results of this study can contribute to the status rehabilitation of these two wood species, neglected and less studied until now within the wood processing department from our country, by changing the specialists attitude from this department regarding the use of these wood species for furniture manufacturing.

Key words:alder, birch, surface quality, roughness, milling.

REFERENCES
BRENCI, L. (2006). Research Concerning the Influence of Cutter Wear upon the Quality of Profiled Wooden Surfaces (Studiu privind influenta uzurii cutitului asupra calitatii suprafetelor profilate din lemn). PRO LIGNO 2(1): 65-73.
COOL, J. (2007). Etudes de Trois Procedes d"Usinage de Finition du Bois de Bouleau Blanc. M.Sc. Thesis. Universite Laval Quebec, Canada.
COSTES, J.; LARRICQ, P. (2002). Towards High Cutting Speed in Wood Milling. In: Ann. For. Sci. 59: 857-865, doi: 10.105/forest:20022084.
DE MOURA, L.; HERNANDEZ, R. (2007). Characteristics of Sugar Maple Wood Surfaces Machined with the Fixed-Oblique Knife Pressure-Bar Cutting System. In: Wood Science and Technology 41:17-29, doi: 10.1007/s00226-006-0074-9.
DOGARU, V. (2003). Frezarea lemnului (Wood Milling). Editura Universitatii "Transilvania", Brasov.
FUJIWARA, Y. (2004). Evaluation of Wood Surface Roughness as Related to Tactile Roughness. Ph.D Thesis. Graduate School of Agriculture, Kyoto University, Japan.
GURAU, L.; MANSFIELD, H.; IRLE, M. (2004). Processing Roughness of Sanded Wood Surfaces. Holz als Roh- und Werkstoff 63: 43-52.
GURAU, L. (2007). Quantitative Evaluation of the Sanding Quality in Furniture Manufacturing. Editura Universitatii "Transilvania", Brasov.
ISKRA, P.; TANAKA, C. (2005). The Influence of Wood Fiber Direction, Feed Rate and Cutting Width on Sound Intensity during Routing. Holz als Roh-und Werkstoff 63: 167-172, doi: 101007/s00107-004-0541-7.
ISPAS, M.(2000). Contributii la studiul prelucrarii lemnului pe masinile de frezat cu ax vertical in vederea optimizarii constructive si functionale (Contributions to the Study of Wood Processing on Vertical Moulders With a View to Constructive and Functional Optimization). PhD thesis. "Transilvania" University of Brasov.
KETURAKIS, G.; JUODEIKIENE, I. (2007). Investigation of Milled Wood Surface Roughness. Materials Science 13(1): 47-51.
KILIC, M.; HIZIROGLU, S.; BURDURLU, E. (2005). Effect of Machining on Surface Roughness of Wood. Building and Environment, doi: 10.1016/j.buidenv.2005.05.008.
SANDAK, J.; MARTINO, N. (2005). Wood Surface Roughness. Report of Trees and Timber Research Institute IVALSA/CNR, Italy.
USTA, I.; DEMIRCI, S.; KILIC, Y. (2006). Comparison of Surface Roughness of Locust Acacia (Robinia pseudoacacia L.) and European Oak (Quercus petraea Mattu.Liebe.) in Terms of the Preparative Process by Planing. Building and Environment, doi: 10.1016/j.buildenv.2006.07.026.
VEGA, M.; AGUILERA, A. (2005). Surface Roughness and Cutting Power for Machining Radiata Pine Bosque 26(1):101-108.
***ISO 4287: 2001. Specificatii geometrice pentru produse. Starea suprafetei: Metoda profilului. Termeni. Definitii si parametri de stare a suprafetei. (Geometrical Product Specification. Surface Texture: Profile Method. Terms. Definitions and Surface Texture Parameters). ASRO Bucuresti.
***ISO 13565 2: 1999. Specificatii geometrice pentru produse. Starea suprafetei. Metoda profilului. Partea 2: Caracterizarea inaltimilor utilizand curba lungimii portante relative. (Geometrical Product Specification. Surface Texture. Profile Method. Part 2: Height Characterization using the Linear Material Ratio Curve). ASRO Bucuresti.