Production Practice of Φ700mm CC Round Bloom of Steel 32Cr3MolV for Casting Roll Shell

李刚; 单文瑞; 许民; 陈树军; 张旭辉

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Production Practice of Φ700mm CC Round Bloom of Steel 32Cr3MolV for Casting Roll Shell

更新时间：2026-01-21

- Production Practice of Φ700mm CC Round Bloom of Steel 32Cr3MolV for Casting Roll Shell
- Special Steel Vol. 41, Issue 1, Pages: 55-57(2020)
- 作者机构：
  
  江苏永钢集团有限公司特钢事业部,张家港,215628
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：29 August 2019，
  
  Online First：20 April 2022，
  
  Published：20 April 2020
- 稿件说明：
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李刚, 单文瑞, 许民, et al. Production Practice of Φ700mm CC Round Bloom of Steel 32Cr3MolV for Casting Roll Shell[J]. Special Steel, 2020, 41(1): 55-57.
DOI：

李刚, 单文瑞, 许民, et al. Production Practice of Φ700mm CC Round Bloom of Steel 32Cr3MolV for Casting Roll Shell[J]. Special Steel, 2020, 41(1): 55-57. DOI：

摘要

32Cr3Mo1V钢（/%:0.33～0.36C

0.20～0.50Mn

0.20～0.40Si

3.00～3.20Cr

0.30～0.45Ni

1.00～1.20Mo

0.19～0.22V

≤0.008P

≤0.005S

≤0.10Cu

≤0.01 Al）连铸圆坯生产工艺为110 t电弧炉-LF-VD-Φ700mm坯连铸。控制电弧炉出钢终点[C

]

≥0.08%、[P

]

≤0.004%

LF精炼终点渣（/%:50～60CaO

10～15Si0

15～25Al

≤6MgO

ΣFeO+MnO≤0.8%

VD后[H

]

≤1.3×10

-6

连铸全程保护浇铸

采用拉速0.2 m/min

过热度稳定控制在18～30℃使用结晶器、铸流、末端电磁搅拌等工艺措施成功生产Φ700mm 32Cr3Mo1V钢连铸圆坯。结果表明

连铸圆坯表面质量良好

中心疏松1.0级、缩孔≤1.5级、中心裂纹≤1.5级

中心缺陷大小低于100mm满足协议标准要求。

Abstract

The production process of steel 32Cr3MolV round bloom（/%:0.33～0.36C

0.20～0.50Mn

0.20～0.40Si

3.00～3.20Cr

0.30～0.45Ni

1.00～1.20Mo

0.19～0.22V

≤0.008P

≤0.005S

≤0.10Cu

≤0.01 Al）is 110 t EAF-LF-VD-Φ700mm round bloom CC. With control of EAF end [C

]

≥0.08%、[P

]

≤0.004%

LF end slag/% : 50~60CaO

10~15SiO

15 -25A1

≤6MgO

ΣFeO+MnO≤0.8%

after VD [H

]

≤1.3 x 10

-6

bloom whole CC process shield casting

casting speed 0.2 m/min

superheating temperature controlled in 18 〜30℃

using M-EMS

S-EMS

F-EMS etc technological measures

the Φ700 mm CC round bloom of 32Ci3Mo1V has been successfully produced. The results show that the surface quality of round bloom is fine with rating of center po

rosity 1.0

centerline shrinkage ≤1.5

centerline crack≤ l. 5

and center defect size less than 100mm all to meet the requirements of standard.

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