根据B.鲁克斯的石墨形核理论,有人提出了盐类碳化物是石墨共晶结晶的有效晶核的假说。但是,由此并不能断定,其它的晶核,例如未过热的灰口铁水中的二氧化硅质点,是否也能成为石墨的晶核。由于加镁处理和灰口铁的过热一样,可使铁水充分脱氧,因而F.里塔尔特根据他自己的研究结果认为,其它的外来质点,例如碳化物,可以起晶核作用。在其研究过程中,浇注了不同厚度的平板,且改变碳当量、浇注温度、孕育剂种类和孕育量等因素,并 According to B. Lux’s graphite nucleation theory, it has been proposed that salt carbides are an effective nucleus for graphite eutectic crystallization. However, it can not be concluded whether other crystal nuclei, such as unheated gray hot metal, can also become crystalline nuclei of graphite. Due to the fact that the magnesium treatment, like the overheating of the gray iron, allows sufficient deoxidation of the molten iron, F. Litalte, according to his own research, believes that other foreign particles, such as carbides, may have a nucleation effect. In the course of their research, different thickness slabs were cast and factors such as carbon equivalent, pouring temperature, type of inoculant and inoculation were changed