LF精炼过程中脱氧剂对气瓶钢洁净度的影响  

Effect of Deoxidizers on the Cleanliness of Gas Cylinder Steels in the LF Refining Process

作　　者：杨树峰[1,2] 李京社[1] 张立峰 高锦国[1] 姜桂连[1,3] 孙开明[1,3] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]密苏里科技大学 [3]天津钢管集团有限公司炼钢厂,天津300301

出　　处：《钢铁》2009年第7期36-38,共3页Iron and Steel

摘　　要：研究了在LF精炼过程中使用两种不同脱氧剂对气瓶钢进行脱氧后各工序钢中氧含量、硫含量以及连铸坯中夹杂物的组成。研究结果表明:在LF精炼过程中使用硅钙钡锶镁无铝脱氧后钢液中活度氧和硫含量较高,但对铸坯中总氧含量影响不大,两种脱氧剂都能将铸坯中总氧的质量分数控制在12×10-6以下;在LF精炼过程中使用硅钙钡锶镁合金脱氧可以使铸坯中氧化铝夹杂和钙铝酸盐夹杂明显减少,硫化物夹杂有所增多;但是硅钙钡镁锶脱氧剂的收得率有待进一步提高。The current study investigated the effect of using two different deoxidizers in the LF refining process on content of oxygen and sulfur and the composition of inclusions in the gas bottle steels. Using Si-Ca-Ba-Mg-Sr alloy as a deoxidizer in the LF refining process, the active oxygen and sulfur in the molten steel are a litter higher, but the different deoxidizers affected little on the T. O. , and the T.O. were controlled below 12 × 10^-6 ; The inclusions of alumina and Al2O3-CaO in the billet are also decreased, while increased sulfides. But the yield of Si-Ca-Ba-Mg-Sr alloy as a deoxidizer should be improved in the future studies.

关 键 词：气瓶钢 脱氧剂 洁净度 非金属夹杂物 

分 类 号：TF777[冶金工程—钢铁冶金]