电渣炉熔速控制技术的开发与应用  

Development and Application of Melting Rate Control in Electroslag Remelting Process

作　　者：邓鑫[1] 姜周华[1] 董艳伍[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2011年第1期94-97,105,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50904015);中国博士后科学基金资助项目(20090450020)

摘　　要：采用同轴大电流电缆、称重系统及电渣炉智能控制等技术手段,开发了电渣炉熔速控制技术,并将该技术应用于实际生产.解决了传统电渣炉由于没有精确熔速控制,造成其重熔钢锭内部结晶质量不高、无法精确补缩的难题.结果表明：实际生产中电渣熔速在5~20 kg/min范围内连续可调,重熔20 t钢锭时,吨钢电耗≤1 340（kW.h）,通过对比分别用熔速控制和递减功率生产的MC5重熔钢锭的质量检验数据得知,钢锭的偏析度得到降低,并减少了钢锭中碳化物的析出,表面质量良好,生产过程实现全自动化,解决了国内具有熔速控制系统的电渣炉设备依赖进口的问题,推动了电渣冶金和电渣熔速控制技术的发展.The melting rate control of ESR furnace as a process technology was developed via introducing the coaxial high-current cables,weighing system and intelligent control,and it has been applied in production.The problems of poor-quality crystals inside remelted ingot and that the feeding process cannot be performed exactly because the melting rate is impossibly controlled exactly in conventional ESR furnace are therefore solved.The results showed that the melting rate of electroslag can be readjusted continuously in the range from 5 kg/min to 20 kg/min in actual production,and the power consumption≤1 340（kW·h）/t in remelting a 20 t ingot.Comparing the quality check data of MC5 remelted ingots prepared with either melting rate control or decreasing power,it was shown that the segregation of ingot is reduced with decreased carbide precipitates in the ingot,thus producing high-quality surface and implementing the fully automatic process of production.In this way we get rid of the imported equipment on which the domestic melting rate control system for ESR furnace relies and give impetus to the development of melting rate control for ESR.

关 键 词：电渣炉 熔速控制 同轴大电流电缆 称重系统 智能控制 

分 类 号：TF744[冶金工程—钢铁冶金]