摘要
对我国11种针叶树木材密度与切削阻力关系研究的主要结果是:1)11个树种内,木材密度与切削阻力关系的相关性,90-90方向切削普遍明显高于0-90和90-0方向,其回归系数有随树种平均密度增大而增大的趋势;2)种间密度与切削阻力关系的相关性性较种内者高,其回归系数与各种内关系的回归系数的平均值接近;3)切削厚度、刀具前角和木材含水率对种间密度阻力关系的影响表现统一的趋势,即各树种的平均切削阻力越大,密度与切削阻力关系的回归系数越大;4)试验中发现了若干表现密度与切削阻力关系分散性的某些特点的现象。
The relationship between wood density and cutting resistance of 11 Chinese coniferous woods was studied. The main results obtained were: 1. The density-cutting correlation within the species was more significant in 90-90 cutting direction than in 0—90 and 90-0. The regression coefficient of the dellsity-cutting resistance relation within the species increased with an increase of the density of the species. 2. The density-cutting correlation among the species was more significant than that within the species. The regression coefficient of the relation among the species was close to the mean values of those within the species. 3. The effects of chip thickness, knife rake angle, and wood moisture content on the density-cutting resistance relation among the species showed a common tendency: the larger the mean value of the cutting resistance, the larger the regression coefficient. 4. Some phenomena were noted during the tests indicating certain characteristics of the scatter of the density-cutting resistance relation.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1991年第6期630-638,共9页
Scientia Silvae Sinicae
基金
国家自然科学基金
关键词
木材
切削
阻力
密度
针叶树材
Wood cutting resistance
Wood density
Coniferous woods
