一、前言球墨铸铁因其机械性能、加工性能和使用性能优良,铸造性能较好,生产工艺简单,因而被广泛应用在机械制造领域中,成为一种极其重要的工程材料。目前,生产厂大都采用敞包冲入法来进行球化处理。这种方法工艺简单,操作方便,而且不需特殊设备,但也存在很多缺点。例如:处理时产生 I. Introduction Ductile iron has become an extremely important engineering material because of its mechanical properties, processing performance and excellent performance, good casting performance and simple production process, which are widely used in the field of mechanical manufacturing. At present, the majority of production plants using open-package into the ball method for processing. This method is simple, easy to operate, and does not require special equipment, but there are also many shortcomings. For example: generated when processing