摘要
对首钢帘线钢72A精炼过程的钢液中酸溶铝、总氧、夹杂物成分和形貌进行了系统的分析,发现从LF结束到VD开始过程中酸溶铝增加很大;VD精炼处理后夹杂物熔点高。分析得出合金中铝以及喂Si-Ca丝导致了钢中酸溶铝的增加;夹杂物中CaO含量过高、SiO_2含量过低导致精炼结束后夹杂物处于高熔点区。提出降低脱氧剂中Ca含量,取消喂丝以及降低精炼渣碱度的改善措施。
The [Al]s and T[O] content of 72A and the composition and photos of the inclusions during LF - VD refining period in Capital Steel were systematically analyzed. The results show that the JAils content increases sharply between the end of LF and beginning of VD, after VD most of the inclusions are in the high melting temperature area. It is concluded that the aluminum in alloy and Si - Ca wire feeding cause the increase of JAils, the high CaO and low SiO2 content are the main reason of inclusions being in high melting temperature. The improving measures are put forward which include reduction the Ca content of deoxidizes, cancel wire feeding and decrease the basicity of refining slag.
出处
《钢铁钒钛》
CAS
2007年第1期9-12,17,共5页
Iron Steel Vanadium Titanium
关键词
帘线钢
精炼
酸溶铝
总氧
夹杂物
cord steel
refining
[ Al] s
T[ O ]
inclusion
