Ciência Florestal (Jan 2015)

AVALIAÇÃO DA SUPERFÍCIE DA MADEIRA DE Eucalyptus grandis Hill ex Maiden TRATADA TERMICAMENTE

  • Gilmara Pires de Moura Palermo,
  • João Vicente de Figueiredo Latorraca,
  • Alexandre Monteiro de Carvalho,
  • Rosilei Aparecida Garcia

Journal volume & issue
Vol. 25, no. 1
pp. 145 – 152

Abstract

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The objective of this study was to study the machined surface quality of Eucalyptus grandis wood submitted to heat treatment. The machining operations realized on the boards obtained from the processing of six trees were: planing, thicknessing, tear in horizontal drilling, drilling, drilling hinge and sanding. 208 boards of 125 x 25 x 500 mm were selected, with 104 untreated and 104 heat-treated boards at maximum temperature of 190ºC. The evaluation of the surface was performed according to ASTM D-1666/87 standard. The result showed that the Eucalyptus grandis wood presents a good behavior during the machining tests, obtaining notes 1 and 2 (excellent and good), except for drilling hinge test in the bolt hole and drilling with 12, 8, 6 mm, reaching notes between 2 and 4 (good, regular and bad). The heat treatment reduced the number of defects on the machined samples, except for torn grain in some machining operations.