随着国民經济的不断跃进,铁路运输事业跟着迅速發展。成天奔馳在铁道上的車輛,当其車輪磨損到一定程度之后就不能继续使用,必須补充新的車輪,这对全国几十万輛的事輛来说,无疑是一个重大的问題。 長期以来,在铁路車輛上使用的輪子共有四种,冷激铸铁车輪;整体铸钢車輪;鑄鋼轮心并压上輪箍制成的車轮;轧制車輪。这四种車輪虽然長期使用着,但都存在一定的缺点:冷激铸铁車輪的寿命低,使用一年左 With the constant leap forward in the national economy, the railway transportation industry has been developing rapidly. All-day Mercedes-Benz vehicles on the railway can not continue to use after their wheels wear to a certain extent, and new wheels must be added. This is undoubtedly a major issue for hundreds of thousands of vehicles around the country. There have been four types of wheels used on railway vehicles for a long period of time, such as cold-cast iron wheels, integrally cast steel wheels, wheels made of cast steel wheels pressed against wheels, and rolling wheels. Although these four kinds of wheels are used for a long time, they all have some disadvantages: the life of the cold-shock cast iron wheel is low,