Quality machined surface in woods floors Corymbia and Eucalyptus.

Abstract

The objective was to generate scientific knowledge that contributes to better efficiency of the parameters involved in machining from different evaluation methods of qualifying the machined surface and evaluate the use of species of Eucalyptus and Corymbia in floor production, but also to analyze the relationship of density and deviation of the grain with the roughness of wood. The species used were E. dunnii, E. urophylla, E. grandis, C. citriodora and C. maculata, all aged 37. For machining test were used test specimens with dimensions of 800 x 100 x 25 mm, advance speeds 15 and 30 m*min^-1 and cutting speed of the tool 18 and 25 m*s^-1. It was held the qualification of the machined surface through the feed per tooth, visual analysis and roughness parameters, and also carried the relationship of the density and diversion of grain with roughness of wood. The wood of all species were classified as bad and very bad for the visual qualification, per tooth feed values were above recommended for wood floors. The lowest values of roughness parameters were obtained for the woods with higher density and lower deviation of the grain. By using different methods of qualification surfaces in Eucalyptus and Corymbia woods, low potential was observed to use these wood floors. However, it must be conducted other studies with different speeds of advance and cut to verify the possibility of improving the surface qualities of the wood.