木材粉末の成形に関する研究 : 第2報,流動特性に及ぼす成形条件の影響(機械要素,潤滑,工作,生産管理など)

概要

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Extrusion tests of mixed wood powders of cryptomeria with Japanese cypress are carried out at various temperatures in order to confirm the possibility of near net shape forming of wood powders. Effects of extrusion temperature, extrusion ratio and the moisture content of the mixed wood powders on the flow characteristics, bending strength and density of extruded products are discussed. The experimental results show that the fluidity of the mixed powders and bending strength and bulk density of extruded products increase with increasing temperature and moisture content of powders. However, when the extrusion temperature is too high, the bending strength and density of extruded products tend to decrease due to bubbles generated in the compacted product.
2003-03-25