210 t复吹转炉-CAS精炼-连铸流程生产低碳铝镇静钢的洁净度

特殊钢 ›› 2008, Vol. 29 ›› Issue (2): 60-62.

210 t复吹转炉-CAS精炼-连铸流程生产低碳铝镇静钢的洁净度

张婷包燕平崔衡岳峰金友林

北京科技大学冶金工程研究院，北京100083

出版日期:2008-04-01 发布日期:2023-01-20
作者简介:张婷(1983-),女，研究生，2005年北京科技大学毕业，低碳铝镇静钢洁净度研究

Cleanliness of Low Carbon Aluminum Killed Steel Produced by 210 t#br# Combined Blown Converter -CAS Refining-Concasting Flow Sheet#br#

Zhang Ting,Bao Yanping,Cui Heng,Yue Feng and Jin Youlin

Research Institute of Metallurgy Engineering,University of Science and Technology,Beijing 100083

Published:2008-04-01 Online:2023-01-20

摘要/Abstract

摘要： 洁净低碳铝镇静钢(%:0.05~0.06C、0.04Al)由210 t顶底复吹转炉-CAS精炼-连铸230 mm板坯流程冶炼。通过27～28 min CAS密封吹氩处理，钢液T[0]由CAS前(50～60)×10~‘降至(19～24)×10^-6,中间包钢水T[0]降至(17～20)×10^-6,铸坯总氧含量为(11～15)×10^-6。铸坯中主要为≤3 μm的球状、块状Al,O,和 Al₂0₃-MnS复合夹杂。≥50 μm的大型夹杂物最高含量为5.18 mg/10kg

关键词: 低碳铝镇静钢复吹转炉CAS精炼板坯非金属夹杂物

Abstract: The cleanliness low carbon aluminum killed steel(0.05～0.06C,0.04Al)was melted by 210 t top and bottom combined blown converter - CAS(composition adjustment by sealed argon bubbling)refining - concasting 230 mm slab flow sheet. With sealed argon bubbling treatment for 27~28 min,the total [0] of liquid steel decreased to(19~ 24)×10^-6 from(50～60)×10^-6before CAS treatment,the total [0] of steel in tundish decreased to(17~20)×10^-6 and the total oxygen content in cast slab was(11~15)×10^-6.The main inclusions in cast slab were ≤3 μm spherical and block shaped Al₂O₃ and combined Al₂O₃-MnS inclusions,and the maximum content of ≥50 um large inclusions in slab was 5.18 mg/10kg

Key words: Low Carbon Aluminum killed steel,Combined Blown Converter,CAS Refining,Slab,Inclusions

张婷包燕平崔衡岳峰金友林. 210 t复吹转炉-CAS精炼-连铸流程生产低碳铝镇静钢的洁净度[J]. 特殊钢, 2008, 29(2): 60-62.

Zhang Ting, Bao Yanping, Cui Heng, Yue Feng and Jin Youlin. Cleanliness of Low Carbon Aluminum Killed Steel Produced by 210 t#br# Combined Blown Converter -CAS Refining-Concasting Flow Sheet#br#[J]. Special Steel, 2008, 29(2): 60-62.