| 榆木锯材常规干燥基准的优化研究 |
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| 引用本文： | 梁筱曼,孟凡阳,高建民,喻迺秋,陈瑶. 榆木锯材常规干燥基准的优化研究[J]. 安徽农业大学学报, 2016, 43(5): 743-748. DOI: 10.13610/j.cnki.1672-352x.20160929.003 |
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| 作者姓名： | 梁筱曼 孟凡阳 高建民 喻迺秋 陈瑶 |
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| 作者单位： | 1. 北京林业大学木质材料科学与应用教育部重点实验室,木材科学与工程北京市重点实验室,北京100083;2. 木材节约发展中心,北京,101118 |
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| 基金项目： | 国家林业局948项目“加拿大糖槭种质资源及培育技术引进”（2013-4-49）资助。 |
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| 摘 要： | 榆木属于难干硬阔叶材,易出现干燥缺陷。针对50 mm厚的榆木锯材,根据其干燥过程中存在的问题,通过应力检测调整中间处理的次数与时间,对榆木锯材常规干燥基准进行了优化;并利用称重法对探针测得的含水率进行修正,得出补偿函数,以保证干燥基准的正确实施。结果表明,按优化后的干燥基准对试材进行干燥,含水率从60.0%±3.0%降至10.0±1.0%,干燥周期由626h缩短至506h,共节约19.17%的干燥时间;干燥后试材厚度上含水率偏差和残余应力分别减小46.73%和33.49%,各项质量检测指标基本达到国家一级标准。
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| 关 键 词： | 榆木锯材 干燥基准 基准优化 含水率修正 |
| 收稿时间： | 2016-04-19 |
Optimization of conventional drying schedule of converted elm timber |
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| LIANG Xiaoman,MENG Fanyang,GAO Jianmin,YU Naiqiu and CHEN Yao. Optimization of conventional drying schedule of converted elm timber[J]. Journal of Anhui Agricultural University, 2016, 43(5): 743-748. DOI: 10.13610/j.cnki.1672-352x.20160929.003 |
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| Authors: | LIANG Xiaoman MENG Fanyang GAO Jianmin YU Naiqiu CHEN Yao |
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| Affiliation: | MOE Key Laboratory of Wooden Material Science and Application, Beijing Key Laboratory of Wood Science and Engineerings, Beijing Forestry University, Beijing 100083,MOE Key Laboratory of Wooden Material Science and Application, Beijing Key Laboratory of Wood Science and Engineerings, Beijing Forestry University, Beijing 100083,MOE Key Laboratory of Wooden Material Science and Application, Beijing Key Laboratory of Wood Science and Engineerings, Beijing Forestry University, Beijing 100083,Wood Conservation and Development Center, Beijing 101118 and MOE Key Laboratory of Wooden Material Science and Application, Beijing Key Laboratory of Wood Science and Engineerings, Beijing Forestry University, Beijing 100083 |
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| Abstract: | Elm hardwood is difficult to dry and prone to drying defects. The drying schedule for elm wood of 50 mm thickness was optimized by means of adjusting the duration and time in intermediate treatment to solve the problems occured during the drying process. In addition, for ensuring the proper implementation of drying schedule, the value of moisture content measured by probe method was corrected through comparing it with the value measured by weighing method. The results showed that: in the optimized drying schedule the drying time decreased from 626 hours to 506 hours, saved by 19.17%. Moreover, the moisture content distributed deviation and residual stress tested on the orientation of the samples thickness were reduced by 46.73% and 33.49%, respectively. Most indicators for quality test reached the national first level standard. |
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| Keywords: | elm timber drying schedule drying schedule optimization moisture content correction |
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