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以过热蒸汽为传热介质和保护性气体,在热处理温度为165℃、180℃、195℃、210℃,热处理时间为10h的条件下对日本落叶松木材进行高温热处理,研究日本落叶松木材在不同热处理温度下的表面显微硬度变化。结果表明,随着热处理温度升高,热处理材表面显微硬度逐渐升高,当热处理温度低于195℃时,木材表面显微硬度变化趋势不明显,当热处理温度达到210℃时,热处理材的表面显微硬度显著提高,变化率高达44.12%。
Using superheated steam as heat transfer medium and protective gas, heat treatment at 165 ℃, 180 ℃, 195 ℃, 210 ℃ and heat treatment time of 10h were used to study the heat treatment of Japanese larch wood at high temperature. Surface microhardness changes at different heat treatment temperatures. The results show that with the increase of heat treatment temperature, the surface microhardness of heat-treated wood gradually increases. When the heat treatment temperature is lower than 195 ℃, the microhardness of wood surface does not change obviously. When the heat treatment temperature reaches 210 ℃, Surface microhardness significantly increased, the rate of change as high as 44.12%.