高炉-中频炉双联短流程熔炼工艺对铁液状态的影响

Effect on the Melt Quality of Cast Iron of Duplex Short-Cut Melting Process with Blast and Induction Furnaces

对铸造现场高炉-中频炉双联短流程熔炼和常规中频炉熔炼铁液状态进行了比较研究。短流程熔炼有增大孕育前铁液过冷倾向的趋势,对铁液状态的影响与炉料配比、成分波动、过热温度和保温时间等因素的影响存在交互作用,其影响程度为同一量级。将短流程熔炼工艺用于灰铸铁生产时,孕育处理是控制其不利影响的最佳手段。

The quality of melt iron made by two melting processes, medium-frequency induction furnace and duplex melting with blast and medium-frequency induction furnaces, was studied comparatively on the foundry floor. The short-cut duplex melting process contributes to the undercooling trend of iron melt, interacts with and has the same order of magnitude with processing parameters such as ratio of charges, fluctuation of composition, superheating temperature and holding time et al. When the short-cut melting process is used in the production of gray iron, properly inoculation is the most effective method to eliminate its negative effect.