重负荷机械制动铁铜基摩擦材料的研制

INVESTIGATION ON Fe-Cu BASED FRICTIONAL MATERIAL FOR HEAVY-LOAD MACHINERY BRAKING

介绍了用于重负荷机械作制动材料的铁铜基粉末冶金摩擦材料制造工艺，并对摩擦材料的基本选择、摩擦组元的影响、添加Mo2O3的作用进行了探讨和研究。结果发现，随着等份量的SiC和SiO2总量的增加，摩擦系数增加，材料的磨损率先下降后上升，有一最小磨损率。添加Mo2O3不仅对提高摩擦系数有一定的效果，而且对降低材料的磨损有显著效果。研制了一种摩擦磨损性能良好价格相对低廉的铁铜基重负荷机械制动材料。

The producing processes of Fe-Cu based powder metallurgy frictional material used for heavy-load machinery braking were presented. The matrix of the frictional material, the effect of the frictional components and the functional mechanism of Mo2O3 added were also investigated. The results show that the frictional coefficient increases with the increase in the total amount of Sic and SiO2(amount of SiC is the equal of SiO2);the wear rate of the material decreases and then increases,and holds a minimum value. Mo2O3 added not only increases the fritional coefficient to some extent,but also decreases remarkably the wear rate of the material. A Fe-Cu based frictional material used for heavy-load machinery braking which has excellent frictional wear behaviour and low cost was developed.