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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.
Through the orthogonal design and the test of Chua’s machine, the half-metal disc brake material formulation with less influence of temperature, load and velocity and less wear was obtained, and the average friction coefficient was 0.444. The results showed that in 4 Among the studied ingredients, the mild black iron oxide black has the greatest effect on the standard deviation of the temperature-dependent coefficient of friction because it has only a frictional effect on cold braking and no thermal friction on excessive braking; The use of a strong abrasive, alumina, leads to an increase in the coefficient of friction and the specific wear rate, a resumption of recovery and an increase in the coefficient of friction with loading; and excessive use of mixed lubricants (graphite and antimony trisulfide) reduces the coefficient of friction and Specific wear rate.