对偶材料对航空刹车副摩擦性能的影响

EFFECTS OF COUPLE MATERIALS ON FRICTIONAL BEHAVIOUR OF AIRPLANE BRAKE PAIRS

介绍了粉末冶金对偶和合金钢对偶对航空刹车副摩擦性能的影响 ,对进口刹车副原件和作者所研制的材料进行了摩擦性能试验。结果表明 ,在设计着陆和服役使用条件下 ,与粉末冶金对偶配对使用的刹车副摩擦系数较高 ;在中断起飞条件下 ,则与合金钢配对使用的刹车副摩擦系数要高一些。摩擦材料的磨损 ,在设计着陆条件下 ,与合金钢配对使用的材料磨损比与粉末冶金对偶配对使用的材料磨损大得多 ;服役使用条件下 ,两者的磨损大体相当。作者对这种摩擦性能的差别进行了分析 ,认为造成这种差别主要原因是粉末冶金对偶含有较多的孔隙和石墨。

The effects of the powder metallurgy and alloy steel counterpart on frictional behaviour of airplane brake pairs were introduced. Frictional and wear tests of imported and self-made brake pairs were made .The results show that under the condition of designing landing and service operation, the frictional coefficient of the brake pairs with powder metallurgy counterpart is higher; under the condition of rejected takeoff, the frictional coefficient of the brake pairs with alloy steel counterpart is higher. For designing landing, the wear of frictional material paired with alloy steel counterpart is much more than that of frictinal material paired with powder metallurgy counterpart, and for service operation, their wear is the same. The difference of the frictional and wear behaviour was analysed. The main reason is that there are more pores and graphites in the powder metallurgy counterpart material.