观光木木材干燥特性研究

为了获得观光木Tsoongiodendron odorum木材的基础干燥特性，编制合理的干燥基准，利用百度试验法对其木材干燥特性进行了研究。结果表明：观光木属易干木材，主要干燥缺陷为初期开裂和扭曲变形；截面变形程度轻，为1～2级；干燥速度2级，较快；初期开裂严重，为3级；扭曲等级3级，无内裂，体积干缩系数小。针对主要干燥缺陷的等级情况，参照百度试验缺陷等级以及干燥缺陷对应的干燥条件制定了25～30 mm厚观光木木材干燥基准，为实际窑干过程的工艺控制提供理论依据。图1表2参13

Drying characteristics of Tsoongiodendron odorum wood

Wood drying is an important link in the utilization of wood processing with a reasonable drying process being very important to ensure drying quality and to improve the wood utilization rate. To obtain the basic drying characteristics and to prepare a reasonable drying schedule for Tsoongiodendron odorum wood, drying characteristics were determined using the 100 ℃ test method. Results showed that T. odorum wood dried easily with the cross-sectional deformation degree being light （from grades 1 to 2） and the drying speed being fast （grade 2）. However, there were serious problems with the initial checks （judged to be grade 3） and with the.degree of twist deformation （grade 3） having no internal cracks and a small volumetric drying shrinkage coefficient,Considering the main drying defect level and the defect level of the 100℃ test method as well as the drying conditions corresponding to the drying defects, a reference drying schedule for T. odorum wood with a thickness of 25-30 mm was drawn up to provide a theoretical basis for control in a practical, kiln-dried process. [Ch, 1 fig. 2 tab. 13 ref.]