UNARC直流电弧炉炉底电极快速更换技术的最大优点是大大地降低了炉底接触维修成本，其新技术的快速更换步骤为：（1）清除炉渣，排空炉子，用高速水喷射耐火材料表面使其加速冷却，同时，将去除的接触夹头放到炉下预先准备好的容器中，去除四只快速接塞，埋入10支热电偶（一次 UNARC DC EAF bottom electrode rapid replacement technology is the biggest advantage of greatly reducing the furnace bottom contact repair costs, the rapid replacement of its new technology steps are: (1) remove the slag, empty the stove, with high-speed water jet refractory surface Make it accelerate the cooling, at the same time, put the removed contact collet into the pre-prepared container under the furnace, remove four quick connecting plugs, embed 10 thermocouples