Analysis and Improved Process Practice on Surface Longitudinal Crack of Concasting Slab of Steel 09CuPTiRE

辛建卿; 余伟

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Analysis and Improved Process Practice on Surface Longitudinal Crack of Concasting Slab of Steel 09CuPTiRE

更新时间：2026-01-21

- Analysis and Improved Process Practice on Surface Longitudinal Crack of Concasting Slab of Steel 09CuPTiRE
- Special Steel Vol. 28, Issue 6, Pages: 59-60(2007)
- 作者机构：
  
  1. 太原钢铁(集团)有限公司技术中心,太原,030003
  2. 北京科技大学高效轧制国家工程研究中心,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：26 May 2007，
  
  Online First：29 December 2022，
  
  Published：29 December 2007
- 稿件说明：
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辛建卿, 余伟. Analysis and Improved Process Practice on Surface Longitudinal Crack of Concasting Slab of Steel 09CuPTiRE[J]. Special Steel, 2007, 28(6): 59-60.
DOI：

辛建卿, 余伟. Analysis and Improved Process Practice on Surface Longitudinal Crack of Concasting Slab of Steel 09CuPTiRE[J]. Special Steel, 2007, 28(6): 59-60. DOI：

摘要

09CuPTiRE耐候钢(%:≤0.12C、0.06～0.12P、≤0.020S、0.25～0.50Cu、≤0.03Ti、0.01～0.04RE) 180mm×1200mm板坯由80t转炉-钢包吹氩-板坯连铸机生产。通过控制Cu/Ti≤20、P含量≤0.11%、RE含量0.01%～0.03%

使用09CuPTiRE钢专用保护渣

结晶器液面波动≤10mm

减少二冷配水量15%等工艺措施

使09CuPTiRE钢板坯纵裂发生率由15%降至0.5%。

Abstract

The 180 mm ×1200 mm slab of atmospheric corrosion-resisting steel 09CuPTiRE(≤0. 12C

0.06~ 0. 12P

≤0.020S

0.25～0.50Cu

≤0.03Ti

0.01～0.04RE)is produced by 80 t converter-ladle argon stirring-vertical-bending slab caster process. With using improved process measures such as controlling Cu/Ti≤20

P content ≤ 0. 11%

RE content 0.01%~0.03%

using special mold powder for steel 09CuPTiRE

mold liquid level fluctuation ≤10 mm and decreasing secondary cooling water rate

the occured rate of longitudinal crack of steel 09CuPTiRE decreased from original 15% to 0.5%.

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