摘要
分析了RH精炼炉处理含钛钢过程终点碳含量偏高且不稳定的原因。认为RH精炼炉处理前钢水的[C]及a[O]、真空度及脱碳时间等是造成含钛钢碳含量偏高且不稳定的主要原因;RH精炼进站[C]高于0.040%,RH处理结束终点碳含量与进站碳含量成正比关系;真空槽内达到的最小真空度越低,深脱碳时间越长,处理结束终点碳含量越低。为保证RH精炼炉出站碳含量合格,应将RH炉进站碳含量控制在0.030%~0.040%、a[O]控制在(450~500)×10^(-6),保证脱碳效果与钢水质量,同时加强设备监控与维护,保持足够的深真空时间,进一步降低真空度。
The reasons for the high and unstable end carbon content in the treatment of titanium-bearing steel by refining furnace are analyzed.It is considered that the[C]and a[O],vacuum degree and decarburization time of molten steel before treatment in refining furnace are the main reasons for the high and unstable carbon content in titanium-bearing steel,and the[C]is higher than 0.040%in RH refining,the carbon content at the end of RH treatment is proportional to the carbon content at the inlet,and the lower the minimum vacuum degree and the longer the deep decarbonization time are,the lower the carbon content at the end of RH treatment is.In order to ensure the qualified carbon content of RH refining furnace,the carbon content of RH furnace should be controlled at 0.030%~0.040%and a[O]at(450~500)×10^(-6),to ensure the decarburization effect and the quality of molten steel,and to strengthen the monitoring and maintenance of equipment,keep enough deep vacuum time,further reduce the vacuum degree.
作者
赵晓明
Zhao Xiaoming(Chengde Vanadiun Titanium New Material Co.,Ltd.,Chengde 067000,Hebei;Hebei Vanadium and Titanium Engineering Research Center,Chengde 067000,Hebei)
出处
《河北冶金》
2022年第11期37-40,45,共5页
Hebei Metallurgy
关键词
钛
低碳钢
RH精炼
脱碳
真空度
titanium
low carbon steel
RH refining
decarburization
vacuum degree
