Effect of thermal treatment on the swelling and surface roughness of common alder and wych elm wood

• Published in: Journal of forestry research Vol. 27; no. 1; pp. 225 - 229
• Main Authors: Aytin, Ayhan, Korkut, Süleyman
• Format: Journal Article
• Language: English
• Published: Harbin Northeast Forestry University 01.02.2016; Springer; Program of Furniture and Decoration,Duzce Vocational School,Duzce University,Düzce,Turkey%Department of Forest Industry Engineering,Faculty of Forestry,Duzce University,Düzce,Turkey
• Subjects: Alnus glutinosa; Biomedical and Life Sciences; Forestry; heat treatment; Life Sciences; Original Paper; roughness; surface roughness; temperature; Ulmus glabra; wood; wood fibers; wood properties; 均方根粗糙度; 平均偏差; 持续时间; 木材性质; 热处理; 肿胀; 表面特性; 表面粗糙度值; Heat treatment; Surface roughness; Swelling; Wych elm; Common alder
• ISSN: 1007-662X; 1993-0607; 1993-0607
• DOI: 10.1007/s11676-015-0136-7

Wood heat treatment has increased signifi- cantly in recent years and is still growing as an industrial process to improve some wood properties. We studied the change of swellingand surface roughness of common alder （Alnus glutinosa （L.） Gaertn. ssp.glutinosa） and wych elm （Ulmus glabra Huds.） woods after heat treatment at two different temperatures and durations. The temperatures were 180 and 200 ℃ and the durations were 2 and 4 h. A stylus method was employed to evaluate the surface char- acteristics of the samples. Roughness measurements by the stylus method were made in the direction perpendicular to the fiber on the wood surface. Four main roughness parameters, mean arithmetic deviation of profile （Ra）, mean peak-to-valley height （Rz）, root mean square roughness （Rq）, and maximum roughness （Ry） were used to evaluate the effect of heat treatment on the surface characteristics of the specimens. Swelling and surface roughness parameters （Ra, Rz, Ry, and Rq） differed significantly for two temper- atures and two durations of heat treatment. Swelling and surface roughness values decreased with increasing treat- ment temperature and treatment times.