白口铸铁具有很高的耐磨性,多半用于磨料磨损条件下工作的耐磨零件,如农业机械、矿山机械、工程机械、冶金机械等一些在工作过程中直接与磨料接触的易耗零件。但由于白口铸铁性脆,不能承受冲击载荷的作用,因而大大限制了它的应用范围。为了改善白口铸铁耐冲击性能,以利于充分发挥它的抗磨损特性,半个世纪来国内外做了大量的试验研究工作,从总的发展趋势看,目前国内外走的是合金化的道路,如国外研究成功的硬镍白口铸铁(含镍3～5%)、高铬白口铸铁(含铬8～38%)、高钒白口 White cast iron with high wear resistance, most of the wear-resistant parts for abrasive wear conditions, such as agricultural machinery, mining machinery, engineering machinery, metallurgical machinery and some of the work in direct contact with abrasive wear parts . However, the white cast iron brittle, can not afford the impact of the impact of load, which greatly limits its scope of application. In order to improve the impact resistance of white cast iron, in order to help give full play to its anti-wear properties, a half a century to do a lot of experimental work at home and abroad, from the general trend of development, at home and abroad to take the road of alloying , Such as hard nickel white cast iron (3 to 5% nickel), high chromium white cast iron (8 to 38% chromium), high vanadium white cast iron