球墨铸铁的型内球化工艺目前是球化处理上最新的一项工艺,它具有许多优点:1)镁的吸收率高,球化稳定;2)石墨球数多,球铁的白口倾向小,机械性能高;3)设有闪光k劳动条件好;4)易于机械化,适合于流水线生产。在美国,球铁的型內球化已经是一项成熟的工艺,有半数以上的球铁工厂采用这项工 Nodular cast iron type of balling process is currently the ball on the latest treatment process, which has many advantages: 1) high absorption rate of magnesium, ball stability; 2) the number of graphite ball, ductile white tendencies Small, high mechanical properties; 3) Flash k working conditions are good; 4) Easy mechanization, suitable for assembly line production. In the United States, the ductile iron type is already a mature technology, more than half of the ductile iron factory to adopt the work