摘要
以非洲圆盘豆地板坯料为试验材料,使用改造后的德国木材干燥机进行过热蒸汽热处理工艺试验。结果表明下述工艺切实可行:待处理试件含水率控制在10%;预热阶段将试件在80℃温度下保持2h;在高温干燥阶段升温至120℃并保持1h;然后迅速升温至热处理目标温度160～220℃范围内,热处理时间为2～8h,在试件热处理过程中进行喷蒸;热处理结束后,调整试件含水率至4%～6%,降温至60℃后出窑。经过该热处理可使地板材颜色加深及尺寸稳定性提高,进而提高地板产品质量。
African Okan Flooring cants are used as test material and the transformed wood drier made in Germany is used to conduct a superheated steam heat treatment process test.The results show the practicability of the following process： the moisture content of the test piece to be treated should be controlled at 10%;the test piece should hold for two hours at 80℃ at the preheated stage;the temperature should rise to 120℃ and hold for one hour at the high temperature and drying stage;then temperature rises quickly to the targeted temperature ranging 160℃ from to 220℃,undergoing heat treatment for 2～8 hours,with steam injection involved in the heat treatment of the test piece;upon the completion of the heat treatment,adjust the moisture content of the test piece to 4%～6% and make the temperature drop to 60℃ before leaving the kiln.The heat treatment can make the color of flooring material darker and make the size very stable,therefore improving the quality of flooring products.
出处
《林业机械与木工设备》
2010年第12期24-26,30,共4页
Forestry Machinery & Woodworking Equipment
基金
中国林科院林业新技术研究所公益性科研院所基本科研业务费专项资金项目"实木地板热处理工艺"(CAFINT2009K04)
关键词
过热蒸汽
木材
热处理
工艺
superheated steam
wood
heat treatment
process
