概述了为降低高速货车的一些零件的磨损而进行的耐磨零件的开发试验工作。这些零件有自动车钩钩体托板摩擦板、制动杠杆导框摩擦板、基础制动装置销孔衬套、钩舌等。指出采用这些新研制的耐磨零件可以延长寿命，减少修理费用，实现作业省力化，从而取得巨大的经济效益。 Outlines the development and testing of wear-resistant parts to reduce the wear and tear on some parts of high-speed trucks. These parts are automatic coupler hook plate friction plate, brake lever guide frame friction plate, the basic brake pin hole bushings, knuckles and so on. It is pointed out that the use of these newly developed wear-resistant parts can prolong the life, reduce the cost of repairing, and achieve the labor-saving operation, thus obtaining huge economic benefits.