颗粒增强木质滑动轴承成形工艺研究
发布时间：2019-05-14 20:54
【摘要】：为降低人类对于金属材料的依赖程度,研发一款可部分替代粉末冶金铜基轴承的新一代滑动轴承。以白杨剩余物粉末为基材、纳米刚玉粉为增强因子,以模压试件的压溃强度、摩擦系数、磨耗量为响应指标。借助响应面试验法进行试验设计与分析,研究模压成形温度、增强因子和成形压力对试件成形工艺的影响,并对试件的制备工艺参数进行优化,同时建立了试件摩擦系数的数学模型。试验结果表明,当白杨粉末粒度60目、成形温度160℃、纳米刚玉粉含量6%时成形工艺条件为最佳组合,据此制备的颗粒增强木质滑动轴承的摩擦系数为0.083,磨耗量为0.0028g/100r,压溃强度为129.78MPa。试验结果表明:颗粒增强木质滑动轴承在某些工况下可部分替代粉末冶金铜基含油轴承用于轻纺机械。
[Abstract]:In order to reduce the dependence of human beings on metal materials, a new generation of sliding bearings is developed, which can partly replace powder metallurgy copper-based bearings. The residual powder of Populus tomentosa was used as the base material and the nano corundum powder as the strengthening factor. The crushing strength, friction coefficient and wear rate of the molded specimen were taken as the response index. With the help of response surface test method, the effects of die forming temperature, reinforcement factor and forming pressure on the forming process of the specimen are studied, and the preparation process parameters of the specimen are optimized. At the same time, the mathematical model of friction coefficient of specimen is established. The experimental results show that when the particle size of poplar powder is 60 mesh, the forming temperature is 160 鈩，
本文编号：2477039
[Abstract]:In order to reduce the dependence of human beings on metal materials, a new generation of sliding bearings is developed, which can partly replace powder metallurgy copper-based bearings. The residual powder of Populus tomentosa was used as the base material and the nano corundum powder as the strengthening factor. The crushing strength, friction coefficient and wear rate of the molded specimen were taken as the response index. With the help of response surface test method, the effects of die forming temperature, reinforcement factor and forming pressure on the forming process of the specimen are studied, and the preparation process parameters of the specimen are optimized. At the same time, the mathematical model of friction coefficient of specimen is established. The experimental results show that when the particle size of poplar powder is 60 mesh, the forming temperature is 160 鈩，
本文编号：2477039
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