Commercial Production Practice of Die Steel 4Cr5MoSiV1 by 100t EAF-LF-Φ500mm Bloom Casting Flowsheet

吕安明; 刘鹏; 刁峰; 闻小德

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Commercial Production Practice of Die Steel 4Cr5MoSiV1 by 100t EAF-LF-Φ500mm Bloom Casting Flowsheet

更新时间：2026-01-21

- Commercial Production Practice of Die Steel 4Cr5MoSiV1 by 100t EAF-LF-Φ500mm Bloom Casting Flowsheet
- Special Steel Vol. 39, Issue 1, Pages: 51-53(2018)
- 作者机构：
  
  山钢股份莱芜分公司特钢事业部,莱芜,271104
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：05 September 2017，
  
  Online First：01 July 2022，
  
  Published：01 July 2018
- 稿件说明：
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吕安明, 刘鹏, 刁峰, et al. Commercial Production Practice of Die Steel 4Cr5MoSiV1 by 100t EAF-LF-Φ500mm Bloom Casting Flowsheet[J]. Special Steel, 2018, 39(1): 51-53.
DOI：

吕安明, 刘鹏, 刁峰, et al. Commercial Production Practice of Die Steel 4Cr5MoSiV1 by 100t EAF-LF-Φ500mm Bloom Casting Flowsheet[J]. Special Steel, 2018, 39(1): 51-53. DOI：

摘要

生产的4Cr5MoSiV1钢（/%:0.3~80.40C，0.88~0.92Si，0.42~0.44Mn，0.001~0.003S，0.007~0.014P，5.00~5.55Cr，1.37~1.40Mo，0.98~1.00V，0.015~0.025Alt）的工艺流程为65%铁水+35%废钢-100t EAF-LF-VD-Φ500mm坯连铸-Φ120mm圆钢轧制。通过控制EAF终点[C

]

0.06%~0.10%

终点[P

]

0.006%

出钢加1kg/t铝块预脱氧

LF精炼渣碱度2.5~3.0

喂钙线后软吹≥10min

VD≤67Pa

100×2L/min氩气搅拌≥15min

中间包钢水过热20~30℃

连铸结晶器电磁搅拌（310A

1.5Hz）

保护浇铸

拉速0.34~0.35 m/min等工艺措施

10炉4Cr5MoSiVl钢中[O

]

和[H

]

分别为10×10

-6

~12×10

-6

72×10

-6

~80×10

-6

1.2×10

-6

~1.4×10

-6

各项指标均满足协议要求。

Abstract

The process flowsheet of commercial-produced steel 4Cr5MoSiVl (/% : 0.38~0.40C

0.88~0.92Si

0.42~0.44Mn

0.001〜0.003S

0.007~0.014P

5.00~5.55Cr

1.37~1.40Mo

0.98~1.00V

0.015~0.025 Alt) is 65% hot metal +35% scrap-100 t EAF-LF-VD-Φ500mm bloom casting. With the process measures including controlling EAF end [C

]

0.06%~0.10% and end [P

]

0.006%

pre-deoxidizing by adding 1kg/t aluminium block during tapping

controlling LF refining slag basicity 2.5~3.0

soft argon stirring for ≥10 min after feeding calcium wire

VD ≤67 Pa

argon stirring with 100 x2 L/min for ≥15 min

supper heat extent of liquid in tundish 20~30℃

casting mold electro

magnetic stirring with 310 A and 1.5 Hz in casting

shielding casting and casting speed 0.34~0.35 m/min

the [O

]

and [ N

]

in 10 heats of steel 4Cr5MoSiVl is respectively 10 x 10

-6

~ 12 x 10

-6

72 x 10

-6

~ 80 x 10

-6

and 1. 2 x 10

-6

〜1.4 x 10

-6

and each index of steel all meet the requirement of specification.

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