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为了获得优质的球墨铸铁铸件,除了要有合格的生铁、焦炭、中间合金等原材料和良好的熔化设备外,对球化处理过程中的球化质量控制也是十分重要的。球化质量控制和检测的方法很多,例如比电阻法、热分析法和炉前快速金相法等。但就我国目前的生产情况来看,除少数工厂采用炉前快速金相等方法外,绝大多数中小工厂仍然依靠经验来控制球化质量。我厂在多年生
In order to obtain high-quality ductile iron castings, in addition to having qualified raw materials such as pig iron, coke, master alloy, and good melting equipment, it is also important to control the quality of the spheroidization during the balling process. There are many ways to control and test the quality of spheroidization, such as the specific resistance method, the thermal analysis method and the fast metallurgical method in the furnace. However, judging from the current production situation in our country, most small and medium-sized factories rely on their experience to control the quality of the ball, except for the few factories that adopt the method of rapid gold advance in the furnace. I plant in perennial