【摘要】 通过正交试验设计和蔡氏试验机测试,得到了摩擦系数受温度、载荷和速度影响较小,磨损也较小的半金属盘式刹车材料配方,其平均摩擦系数是0.444.结果表明,在4种被研究的成分中温和的研磨剂氧化铁黑对与温度有关的摩擦系数的标准偏差影响最大,原因在于其只对冷制动起增摩作用而对热制动没有增摩作用;过多使用强的研磨剂氧化铝会导致摩擦系数和比磨损率增大,出现过恢复,并且摩擦系数随载荷增加;而过多使用混合润滑剂(石墨和三硫化二锑)会减小摩擦系数和比磨损率.更多还原

【Abstract】 An orthogonal experimental design,combining with Chase friction testing was used to obtain a semi-metallic disc brake material formula with less effect of temperature,load and velocity on friction coefficient and wear.The average friction coefficient was 0.444.Experimental results show that black iron oxide,a mild abrasive,affected greatly on the standard deviation of friction coefficient relevant to temperature among the four ingredients.This is because that black iron oxide increased the friction at the low temperature at the beginning,but it decreased it when the temperature was high.Excessive aluminium oxide,a strong abrasive,was used to induce the increase of friction coefficient and specific wear rate and the occurrence of over recovery,especially friction coefficient was increased with load,while excessive mixed lubricant containing graphite and antimony trisulphide reduced friction coefficient and specific wear rate.更多还原