脱氧工艺对车轮钢洁净度与大型夹杂物形成的影响  

Effect of deoxidation process on the cleanliness and large inclusions formation in wheel steel

作　　者：翟万里 马建超 张洪才[1] 肖梦旋 王晓峰 ZHAI Wanli;MA Jianchao;ZHANG Hongcai;XIAO Mengxuan;WANG Xiaofeng(Jiangsu Shagang Group Huaigang Special Steel Stock Co.,Ltd.,Huaian 223002,China;Institute of Research of Iron and Steel,Jiangsu/Shasteel,Zhangjiagang 215625,China;College of Mechanical and Electrical Engineering,Shaanxi University of Science&Technology,Xi′an 710016,China)

机构地区：[1]江苏沙钢集团淮钢特钢股份有限公司,江苏淮安223002 [2]江苏省(沙钢)钢铁研究院,江苏张家港215625 [3]陕西科技大学机电工程学院,陕西西安710016

出　　处：《现代交通与冶金材料》2024年第6期52-55,67,共5页Modern Transportation and Metallurgical Materials

基　　金：国家自然科学基金面上项目(52174320,52474360)。

摘　　要：通过炼钢工业试验,研究了高硅系列车轮钢采用不同的脱氧工艺对钢的洁净度与大型夹杂物产生的影响,得出如下结论:冶炼全程限制铝脱氧、采用碱度1.8~3.0精炼渣系、钢的成品Al控制在0.006%~0.010%的脱氧造渣工艺方案1,精炼炉渣氧化性较高,钢中氧含量较高,钢中内生夹杂物为CaO⁃SiO_(2)⁃Al_(2)O_(3)⁃MgO类复合物,易因浸入式水口上夹杂物的大量聚集而产生大型夹杂物。冶炼全程使用铝脱氧、采用碱度3.5~3.0精炼渣系、钢的成品Al控制在0.013%~0.018%的工艺方案2,精炼炉渣氧化性较低,钢中氧含量较低,钢中内生夹杂物为CaO⁃Al_(2)O_(3)⁃MgO复合物,浸入式水口上夹杂物聚集而产生大型夹杂物的风险较低。The influence of deoxidation process on the cleanliness and large inclusions of high silicon wheel steel is studied in the present paper.The results show that the higher oxidation of refining slag and oxygen content in steel are obtained,by restricting aluminum deoxidation with R_(2) of 1.8 to 3.0 and Al content of 0.006%to 0.010%in steel.The endogenous inclusions are mainly constituted of CaO-SiO_(2)-Al_(2)O_(3)-MgO.When the clogging of this type of inclusion falls off,large inclusions are easily found in the final product.After aluminum deoxidation with increasing the slag basicity to the range of 3.5 to 5.0,and controlling the Al content in the range of 0.013%to 0.018%,the lower oxidation in the refining slag and oxygen content in the steel are obtained.As a result,the endogenous inclusions are mainly constituted of CaO-Al_(2)O_(3)-MgO,which is difficulty to clog and then large inclusions are hard to find.

关 键 词：脱氧工艺 大型夹杂物 炉渣碱度 AL含量 夹杂物成分 

分 类 号：TF704.1[冶金工程—钢铁冶金] U260.331.1[机械工程—车辆工程]