干燥空气保护法在电渣重熔炉上应用与实践  

Application and Practice of Dry Air Protection Method in Electroslag Remelting Furnace

作　　者：黄兴涛[1] 童英豪[1] Huang Xingtao;Tong Yinghao(Baosteel Special Steel Co., Ltd.,Shanghai, 200940, China)

机构地区：[1]宝钢特钢有限公司特材事业部,上海200940

出　　处：《特钢技术》2018年第2期44-47,共4页Special Steel Technology

摘　　要：电渣重熔生产高品质模具钢过程中,容易出现钢锭中氢含量超标、后续钢锭扩氢退火热处理时间长、成本高的问题。本文分析了氢含量超标的原因,集成、量身设计了一套干燥空气装置,提出了用干燥空气对冶炼准备阶段对结晶器及底水箱进行干燥消除初始状态水分、以及冶炼过程中气氛保护防止过程吸气,有效控制了电渣过程中的增氢现象,提高了电渣锭的产品质量,取得了良好的效果。Excessive hydrogen content of the steel ingot, long thermal treatment time and high capital cost are the major problems in the process of electroslag remelting （ESR）. In this study, the reason for the excessive hydrogen content was analyzed and an air-drying equipment was developed. The results suggested that air-ch＇ying over the mold and bottom water tank at the initial stage of ESR could eliminate moisture in the air and prevent air absorbing during the ESR, which controlled the increase of hydrogen content and improved the quality of electroslag ingot.

关 键 词：电渣重熔 增氢 干燥空气 

分 类 号：TF14[冶金工程—冶金物理化学]