孔隙和沟槽对湿式烧结摩擦材料性能的影响

INFLUENCE OF POROSITY AND GROOVE ON PROPERTIES OF WET TYPE SINTERED FRICTION MATERIALS

摘要: 对孔隙率分别为9%、23%和30%的湿式烧结摩擦材料的台架试验表明,其动摩擦系数随孔隙率的提高而提高,接合时间随孔隙率的提高而缩短。还讨论了沟槽型式对其摩擦性能的影响,其刮油能力（以及与此有关的动摩擦系数）随沟槽与摩擦表面油流方向夹角的减小而增大;其冷却效果随沟槽与油流方向夹角的增大而增大。实验还表明,增加沟槽密度也可以改善摩擦片的摩擦性能和冷却效果。

Abstract: The test results of wet type sintered friction materials with the porosity of 9、23 and 30% showed that the dynamic friction coefficient increases and the duration of grinding decreases with the increase of porosity. The influence of groove type on its properties has also been discussed. Oil scrapping capacity concerned with dynamic friction coefficient increases with the decrease of included angle between groove and oil flowing direction on friction surface and the cooling effects increase with the increase of the angle. The experimental results also demonstrated that friction properties and cooling effects can be improved by increasing the density of groove.