敞口包夹层覆盖冲入法球化处理工艺改进

Spheroidization Improvement on Process of Nodularizer with Laminated Cover Poured-Over in an Exposure Ladle

通过在铁液包、炉内和出铁温度、铁液成分、球化剂选择及加入量等方面对冲入法进行改进,镁的吸收率和球化率均得以提升。

Through improvement on the pour-over process with foundry ladle, inner furnace temperature and tapping temperature, composition of liquid iron, nodularizer choice and its adding amount, cover flux choice, cover plate choice, packing way, inoculation effect, control in induction furnace etc, the magnesium absorption rate and the rate of spheroidization have been improved.