材料期刊网

通过分析当前电力机车受电弓滑板存在的各种问题,用粉末冶金法研制出一种新型的受电弓滑板.该滑板由铜、碳纤维和石墨等构成.分析了成形压力、烧结温度对滑板性能的影响,对其导电性、摩擦、磨损性能及冲击韧性进行了检测,并与当前正在使用的受电弓滑板进行了对比.结果表明:该新型滑板的最佳制备工艺条件为(含量)铜78%,碳纤维2%,石墨15%,添加剂5%,成形压力为200MPa,烧结温度为880℃.该滑板不仅电阻率低,而且其摩擦、磨损及冲击韧性等性能也优越于当前正在使用的受电弓滑板.与国外浸金属碳滑板Rh82Mb相比,其摩擦系数降低20%,磨损量减少1.3%,冲击韧性提高1.7倍,导电性增强65倍.

In view of the existing problems of current electric locomotive pantograph slide plates, a new pantograph slide plate is developed by using powder metallurgy technology. The new pantograph slide plate consists of copper, carbon fiber and graphite, etc. Firstly, the influences of pressure and sintering temperature on the performance of pantograph slide plate are studied. Then, its performances of friction, abrasion and conductance are tested. Finally, the performance of the new pantograph slide plate is compared with that of current pantograph slide plates. The results show that the optimal condition of preparing slide plate is:copper content 78 %, carbon fiber content 2 %, graphite content 15 % ,additive content 5%, pressure 200MPa and sintering temperature 880℃. Its resistance is very low. And its performance of friction, abrasion and impact toughness etc. are improved greatly as compared with foreign immersed metal carbon slide plate Rh82Mb with friction coefficient reduced by 20%, abrasion ratio decreased by 1.3%, impact toughness increased by 1.7 times and conductance increased by 65 times.