稀土镁球墨铸铁是一种新型的铸造材料,其抗拉强度、延伸率、冲击值、布氏硬度等接近国家规定的铸钢和中碳钢锻件指标,而屈服强度、疲劳强度和耐磨、耐热等性能还比碳钢优越。这是由于它具有球状石墨和致密的金属基体组织的缘故。稀土镁球墨铸铁,是用一定量的稀土镁合金加入铁水内进行处理,使铸铁中碳素析出时成为球状石墨而制得。稀土元素对铸铁有强烈 Rare earth magnesium nodular cast iron is a new type of cast material, its tensile strength, elongation, impact value, Brinell hardness and other similar specifications for the national steel and carbon steel forgings indicators, and yield strength, fatigue strength and wear resistance, Heat resistance and other advantages than carbon steel. This is because it has spherical graphite and dense metal matrix organization sake. Rare earth magnesium nodular cast iron, is a certain amount of rare earth magnesium alloy into the molten iron for processing, so that carbon precipitation of cast iron into spherical graphite obtained. Rare earth elements have a strong cast iron