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用包底冲入法处理球墨铸铁一般的特征是铁水一盖过球化剂即开始起爆,使铁水翻动进行球化反应。因此从某种意义上说,控制球化剂与铁水作用的时间是冲入法处理球铁的关键之一,而当球化剂成分和铁水温度等主要因素大体相同时,反应时间又取决于球化剂的装载与覆盖条件。因此,改善球化剂的装载和覆盖条件对提高球化剂的吸收率、减少加入量、稳定球化都是有益的。随着对铸件质量要求的提高,特别是为了适应使用铸造焦熔炼后,铁水温度普遍提高20～
The bottom of the infiltration method to deal with the general characteristics of ductile iron is a hot metal over the nodulizer that started detonation, turning the molten iron ball reaction. Therefore, in a sense, the time for controlling the action of nodulizing agent and hot metal is one of the keys to the ductile iron treatment. When the main components of nodulizer composition and hot metal temperature are roughly the same, the reaction time depends on Nodulizer loading and covering conditions. Therefore, to improve the nodulizer loading and covering conditions to improve the nodulizer absorption rate, reduce the amount added, the stability of the ball are beneficial. With the improvement of casting quality requirements, in particular, to adapt to the use of foundry coke smelting, the molten iron temperature generally increased by 20 ~