【摘要】：為降低人類對于金屬材料的依賴程度,研發(fā)一款可部分替代粉末冶金銅基軸承的新一代滑動軸承。以白楊剩余物粉末為基材、納米剛玉粉為增強因子,以模壓試件的壓潰強度、摩擦系數(shù)、磨耗量為響應(yīng)指標(biāo)。借助響應(yīng)面試驗法進(jìn)行試驗設(shè)計與分析,研究模壓成形溫度、增強因子和成形壓力對試件成形工藝的影響,并對試件的制備工藝參數(shù)進(jìn)行優(yōu)化,同時建立了試件摩擦系數(shù)的數(shù)學(xué)模型。試驗結(jié)果表明,當(dāng)白楊粉末粒度60目、成形溫度160℃、納米剛玉粉含量6%時成形工藝條件為最佳組合,據(jù)此制備的顆粒增強木質(zhì)滑動軸承的摩擦系數(shù)為0.083,磨耗量為0.0028g/100r,壓潰強度為129.78MPa。試驗結(jié)果表明:顆粒增強木質(zhì)滑動軸承在某些工況下可部分替代粉末冶金銅基含油軸承用于輕紡機(jī)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，

本文編號：2477039