球形石墨鑄鐵

延性鐵主要由鐵，碳和矽.組成時，將球狀化劑添加到熔融鐵中，主要作為球形石墨沉澱，從而導致凝固性鐵的固化.的含糖鐵的常規生產過程，涉及3次降解液位，以添加稀有量{ magnesium promotes the formation of carbides, silicon must also be added to counteract this effect. This treatment results in graphite forming spherical shapes. Unlike gray cast iron, ductile iron does not form eutectic colonies during the solidification process. Typically, the size of the graphite spheres is about 1.0% of灰鑄鐵中形成良好的共晶菌落的菌落。