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对马尾松(针叶材)、水曲柳(环孔材)、胡桃楸(半散孔材)和色木(散孔材)四个树种的正常材弦切小试件(顺纹高7毫米,弦向40毫米,径向40毫米)分别以100、80、60和40℃四个温度水平干燥,并作初状态为水饱和与半干材的比较(水曲柳为生材状态),干燥前经汽蒸1小时同不汽蒸的比较,干燥后再原温吸湿和拟霉天气候吸湿的比较。获知了温度、汽蒸处理,含水率和树种对尺寸变异性影响的规律性,并发现木材尺寸正一反向变化时具有滞后现象。文章还讨论了“干裂势”定义对于窑干工艺的适应性,并根据试验结果讨论关于纤维饱和点和干燥过程中的应力问题。
The normal saplings of four species of Pinus massoniana (coniferous wood), Fraxinus mandshurica (Central pore wood), Juglans mandshurica (Semi-diffusive wood) and Colored wood Mm, chordwise 40 mm, radial 40 mm) were dried at four temperature levels of 100, 80, 60 and 40 ° C, respectively, and the initial state was compared with water-saturated and semi-dry woods Before steaming 1 hour compared with steamed, dried and then the original temperature moisture and the moisture of the pseudomycin weather comparison. The regularity of the effects of temperature, steaming treatment, moisture content and tree species on the size variability was obtained and it was found that there was a hysteresis when the wood size was changed from one to the other. The paper also discusses the adaptability of the definition of “dry rift” to the kiln dry process and discusses the stress points at the fiber saturation point and in the drying process based on the test results.