我国的稀土资源丰富,稀土的储量占全世界总储量约90%。随着冶金工业的发展,稀土的生产发展迅速,其应用范围也在逐步扩大,目前稀土在机械工业中应用很广泛,对提鬲机械工程材料性能效果明显并对机械工业发展起到了一定的促进作用。一、稀土镁球墨铸铁在产量、质量、品种、应用范围、工艺改进等方面有新的进展稀土镁球墨铸铁是机械工业中产量最大的稀土材料,和国外镁球铁相比,它具有铸造性能好、铸造缺 China’s rare earth resources are rich in rare earth reserves account for about 90% of the world total reserves. With the development of the metallurgical industry, the production of rare earth has developed rapidly, and its scope of application is also gradually expanding. At present, rare earth is widely used in the machinery industry, which has obvious effect on the performance of the mechanical engineering materials and has promoted the development of the machinery industry effect. First, the rare earth magnesium nodular cast iron in the production, quality, variety, scope of application, process improvement, etc. There are new developments rare earth magnesium nodular cast iron is the largest output of rare earth materials in the machinery industry, and foreign magnesium iron ductile iron, it has a casting performance Well, the lack of casting