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

张婷包燕平崔衡岳峰金友林

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

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- Cleanliness of Low Carbon Aluminum Killed Steel Produced by 210 t#br# Combined Blown Converter -CAS Refining-Concasting Flow Sheet#br#
- Special Steel Vol. 29, Issue 2, Pages: 60-62(2008)
- 作者机构：
  
  北京科技大学冶金工程研究院,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：20 January 2023，
  
  Published：20 January 2008
- 稿件说明：
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张婷包燕平崔衡岳峰金友林. 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.
DOI：

张婷包燕平崔衡岳峰金友林. 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. DOI：

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

和 Al

-MnS复合夹杂。≥50 μm的大型夹杂物最高含量为5.18 mg/10kg

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

-6

before 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 Al

and combined Al

-MnS inclusions

and the maximum content of ≥50 um large inclusions in slab was 5.18

mg/10kg

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