摘要
氧元素是硅钢中的有害杂质,RH精炼脱氧方式对氧含量的控制有重要影响。结合大生产含铝无取向硅钢的实际情况,研究了RH精炼脱氧方式对无取向硅钢夹杂物的影响。结果表明,RH精炼采用"先硅后铝"脱氧方式对应的钢中氧含量高于"先铝后硅"脱氧方式。采用"先硅后铝"和"先铝后硅"脱氧方式时Si、Al元素平均收得率分别为90.7%、78.2%和97.5%、63.7%,前者的脱氧效果要优于后者。从磁性控制角度而言,采用"先硅后铝"脱氧方式对磁性更为有利。采用"先硅后铝"和"先铝后硅"脱氧方式,对应的夹杂物种类分别以Mn S+CuxS复合夹杂和以单个的Al N以及Mn S+Al N复合夹杂为主,两者平均尺寸分别为0.73μm和0.38μm。
The oxygen element is harmful to Si steel,and the RH refining deoxidation method has an important effects on oxygen concentration. Based on the industrial non-oriented Si steel containing Al,the effects of RH refining deoxidation method on non-metallic inclusions was investigated. The results show that the oxygen concentration in liquid steel from Si-Al deoxidation sequence method is higher that of AlSi deoxidation sequence method. The average yield of Si and Al for Si-Al deoxidation sequence method are 90. 7% and 78. 2%,respectively,and those for Al-Si deoxidation sequence method are 97. 5% and63. 7%,respectively. The Si-Al deoxidation method is superior to the Al-Si deoxidation method in terms of Si and Al yields. Thus,from the viewpoint of controlling magnetic properties,Si-Al deoxidation sequence method is recommended. The major non-metallic inclusion is composite of Mn S and CuxS generating from Si-Al deoxidation sequence,and individual Al N and complex Mn S and Al N inclusions dominate in Al-Si deoxidation sequence. Average inclusion sizes are 0. 73 μm from Si-Al deoxidation sequence and0. 38 μm from Al-Si deoxidation sequence.
出处
《钢铁钒钛》
CAS
北大核心
2015年第3期111-115,共5页
Iron Steel Vanadium Titanium
关键词
无取向硅钢
RH精炼
脱氧方式
化学成分
夹杂物
non-oriented Si steel
RH refining
deoxidation method
chemical composition
non-metallic inclusion
