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目前普遍采用高炉炼钢生铁铸造钢锭模。它是金属容量很大的铸件,其壁厚为100～190毫米,而其结晶时间则需持续数小时。这对石墨球化率将产生不利影响。钢锭模的球化处理温度为1300～1380℃。每吨钢锭模的成本不超过80卢布。用镁制取球墨铸铁时,处理结果的不稳定性、生产工艺的复杂性以及其它一些因素,限制了以镁生产钢锭模方法的普及。然而,用 KM 复合球化剂,可以克服上述工艺过程的缺
At present, blast furnace steel ingot casting ingot mold is widely used. It is a cast metal with a very large metal content and has a wall thickness of 100-190 mm, while its crystallization time lasts for several hours. This will adversely affect the graphitization rate. The ingot mold treatment temperature of 1300 ~ 1380 ℃. The cost per ton of ingot mold does not exceed 80 rubles. When magnesium is used to make ductile iron, the instability of processing results, the complexity of the production process, and other factors limit the popularity of methods for producing ingot molds with magnesium. However, with KM composite nodulizer, can overcome the lack of the above process