在感应炉内熔炼时,稳定获得球墨铸铁的条件之一是铸铁变性处理的最佳参数。在一定的铸铁成分和冷却速度下,变性处理的主要因素是:变性剂数量、处理温度、中间合金加入方法、坩埚(浇包)炉衬材料和变性剂球化作用的时间。试验熔炼是在频率为2500赫的60公斤感应炉内进行的,炉料采用碳钢残料、75%硅铁和石墨化的焦粉。铁水过热到1500℃,保温15分 One of the conditions for obtaining ductile iron stably during the induction furnace smelting is the optimum parameter of the cast iron. The main factors of denaturation at a given cast iron composition and cooling rate are: the amount of denaturant, the treatment temperature, the addition of master alloys, the time taken for the crucible (ladle) lining material and denaturing agent to spheroidize. The test smelting was carried out in a 60 kg induction furnace at a frequency of 2500 Hz using carbon steel scrap, 75% ferrosilicon and graphitized coke dust. Hot metal to 1500 ℃, heat 15 minutes