【摘要】 对中频无芯感应熔炼炉内钢料在熔化过程中断后的降温和凝固过程进行了数值模拟。研究了熔化过程中突然断电后熔炼炉内钢料的相界面变化、温度分布及变化的规律。讨论了正常熔化时间即断电前炉内状态对断电后钢液凝固和炉内温度变化的影响。结果表明 :正常熔化中突然断电后 ,熔化仍将进行 ,但相界面移动速度变小 ,熔化逐渐终止 ;正常熔化时间越长后 ,断电后继续熔化的钢量越多。更多还原

【Abstract】 The temperature variation and solidification process of steel material after melting process intermitted in intermediate frequency induction melting furnace were simulated numerically. The movement of phase interface and the temperature variation of the steel material with time were studied after electric power broken suddenly during melting process. The effect of the initial state on the solidification process of liquid steel and the temperature changing inside furnace were discussed, respectively. The calculated results show that melting process will keep for an interval after electric power broken suddenly, but the moving velocity of phase interface will reduce, and the melting process will stop finally. The melting interval increases with the increase of the melting time before electric power broken.更多还原