摘要
采用柱面连续滑动加压法对木材进行表面密实,并对不同工艺参数制得的表面密实材进行密度分布、表面硬度及耐磨性测定。结果表明,柱面连续滑动加压表面密实后,试件的密实层均集中于表层,且压缩量越大,表面密实层密度越大,表面密实层越厚,加载头半径越小,表面密实层的密度也越大,且密实层越集中于表层;表面硬度及耐磨性随着压缩量的增大以及加载头半径的减小而提高;柱面连续滑动加压法较传统平压法提高了木材表面硬度和耐磨性的同时大大减少了材积损耗。采用半径5 mm加载头压缩3 mm后,试件表面密实层的最大密度可达783 kg·m^(-3),比未密实前提高了82.6%,表面硬度提高了93%,材积损耗仅为12%。
Wood surface was densified by continuous sliding compression in cylinder method, density distribution, surface hardness and abrasion resistance of surface densified specimen compressed by different process parameters were measured. The results showed that: after compressed by continuous sliding compression in cylinder method, the densified layer was concentrated in the surface layer, and the larger the amount of compression, the larger the density of surface densified layer and the thicker surface densified layer, while the smaller the radius of the loading head, the larger the density of surface densified layer and the more concentrated on the surface the densified layer;the surface hardness and abrasion resistance increased with the increase of the amount of compression and the decrease of the radius of loading head;compared with the traditional flat pressing method, continuous sliding compression in cylinder method improved the surface hardness and abrasion resistance of wood, and greatly reduced the loss of wood volume. When using a loading head of radius 5 mm to compress 3 mm, the maximum density of the surface densified layer could reach 783 kg·m^-3, which was 82.6% higher than before, and surface hardness increased by 93%, with the volume loss rate of only 12%.
作者
刘丹丹
关惠元
黄琼涛
LIU Dandan;GUAN Huiyuan;HUANG Qiongtao(College of Furnishings and Industrial Design,Nanjing Forestry University,Nanjing 210037;Yihua Life Technology Co.Ltd.,Shantou 515800)
出处
《安徽农业大学学报》
CAS
CSCD
2018年第6期1057-1062,共6页
Journal of Anhui Agricultural University
基金
江苏省林业资源高效加工利用协同创新中心发展规划
江苏省高校优势学科建设工程项目PAPD共同资助
关键词
柱面连续滑动加压
表面密实
密度分布
表面硬度
耐磨性
continuous sliding compression in cylinder method
surface densification
density distribution
surface hardness
abrasion resistance
