降低Q235板坯夹杂物实践  

Practice of Reducing Inclusion in Q235 Slab for Chuanwei

作　　者：李良[1] 何生平[2] 张国兴[2] 

机构地区：[1]川威集团钒钛冶金科技公司,四川内江642469 [2]重庆大学材料科学与工程学院,重庆400044

出　　处：《钢铁钒钛》2010年第3期84-87,共4页Iron Steel Vanadium Titanium

摘　　要：采用氮氧分析、大样电解和能谱分析等方法,对川威现有工艺下Q235铸坯的洁净度进行调查,分析钢水洁净度较低的原因,并优化Q235的冶炼工艺。结果表明,采用转炉渣洗操作,控制软吹时间和强度,减少大包下渣量,钢中大型夹杂和T[O]大幅度下降,钢水和铸坯洁净度明显提高。Utilizing the methods of nitrogen oxygen analysis,sample-electrolyzing and spectrum analysis,cleanliness of casting slab of Q235 was surveyed under present process in Chuanwei,and the reason of low cleanliness of molten steel was analyzed,and the smelting process for Q235 was optimized.The results show that utilizing slag washing operation,controlling soft blowing time and strength,and reducing slag amount of ladle,large inclusions and T[O] in steel decreased dramatically,cleanliness of steel was significantly increased.

关 键 词：钢水 洁净度 Q235板坯 渣洗 夹杂物 

分 类 号：TF777[冶金工程—钢铁冶金]