在铁路机车、车辆上,安装着大量的不同类型、不同规格的滚动轴承,这些轴承的运用情况,和铁路运输的安全可靠性、经济性有直接的关系。国产轴承的寿命,在六十年代到七十年代,一般是国外技术先进国家所生产轴承疲劳寿命的七分之一到三分之一。经过近几年的努力,国产轴承疲劳寿命虽有提高,但和世界先进水平相比,仍有不少差距。因此,提高轴承的疲劳寿命,是符合铁路运输要求的,也是我们迫切需要的。 In railway locomotives and vehicles, a large number of rolling bearings of different types and sizes are installed. The application of these bearings is directly related to the safety, reliability and economy of railway transportation. Domestic bearing life, in the sixties and seventies, is generally one-seventh to one-third of the fatigue life of bearings produced by foreign advanced technology countries. After several years of hard work, the fatigue life of domestic bearings has improved, but compared with the world advanced level, there are still many gaps. Therefore, to improve the bearing fatigue life is in line with the requirements of rail transport, but also our urgent need.