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《Journal of Forestry Engineering》 2018-01
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Effect of surface micro-texture cemented carbide on friction characteristics of birch

LI Weiguang;ZHANG Zhankuan;Research Institute of Wood Industry,Chinese Academy of Forestry;  
Micro-texture is a kind of effective measures to improve material friction performance. Birch( Betula spp.)was selected as the cutting samples. Under the different loads and wood moisture contents,the influence of cemented carbide sample with or without texture on the friction coefficient of birch surface was studied. The results showed that,when the cutting depth,diameter and center hole spacing of micro-texture were 20 μm,50 μm and 150 μm,respectively,the wettability of the micro-texture surface was better than that of plane surface,with strong hydrophilic property. The coefficient of friction between the micro-texture surface and birch was lower than that between the plane surface and birch. In the case of 40% wood moisture content and 10 N loading,the average friction coefficient of plane and micro-texture was 0.121 and 0.043,respectively. With the increase of working load,the coefficient of friction between the surfaces increased. Reasonable micro-texture form can effectively reduce the friction coefficient between birch and cemented carbide. The friction performance was affected by the wood moisture content,applied load and other factors. The texture technology can be applied to wood cutting,aiming at exploring the mechanism of micro-texture antifriction and providing a newway for antifriction technology in the wood machining.
【Fund】: 国家自然科学基金(31270605)
【CateGory Index】: TS652
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