Practice of Process for Production of Steel 14Cr1Mo by 30t EAF-LF-VD-13 t Casting Ingot Flowsheet

祁庆花; 赵子文; 韩文科; 杨德生

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Practice of Process for Production of Steel 14Cr1Mo by 30t EAF-LF-VD-13 t Casting Ingot Flowsheet

更新时间：2026-01-21

- Practice of Process for Production of Steel 14Cr1Mo by 30t EAF-LF-VD-13 t Casting Ingot Flowsheet
- Special Steel Vol. 38, Issue 2, Pages: 19-22(2017)
- 作者机构：
  
  1. 兰州兰石能源装备工程研究院有限公司,兰州,730314
  2. 甘肃省高端铸锻件工程技术研究中心,兰州,730314
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：05 October 2016，
  
  Online First：22 July 2022，
  
  Published：22 July 2017
- 稿件说明：
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祁庆花, 赵子文, 韩文科, et al. Practice of Process for Production of Steel 14Cr1Mo by 30t EAF-LF-VD-13 t Casting Ingot Flowsheet[J]. Special Steel, 2017, 38(2): 19-22.
DOI：

祁庆花, 赵子文, 韩文科, et al. Practice of Process for Production of Steel 14Cr1Mo by 30t EAF-LF-VD-13 t Casting Ingot Flowsheet[J]. Special Steel, 2017, 38(2): 19-22. DOI：

摘要

试验14Cr1Mo钢（/%:0.12C，0.57Si

，

0.48Mn

，

0.003P

，

0.001S

，

1.20Cr

，

0.42Mo

，

0.01V

，

0.001Nb0.017A1，0.003As，0.001Sb，0.002Sn）64 mm×160 mm锻坯的冶金工艺流程为30t EBT EAF-LF-VD-13t铸锭-锻造。通过采用优质废钢，控制EAF终点[P

]

≤0.002%

终点[C

]

0.07%~0.10%，出钢加Al预脱氧，LF白渣时间≥30min，VD 67 Pa≥25 min，VD后喂0.35 kg/t Ca-Si线等工艺措施，钢中[H

]

为1.5×10

-6

]

17×10

-6

]

70×10

-6

各类非金属夹杂物为0.5级。经930℃空冷预备热处理，910℃水冷+700℃空冷回火，690℃ 4~20h炉冷模拟焊后消除应力处理后的该钢力学性能满足参考标准NB/T47008-2010的要求。

Abstract

The metallurgical process flowsheet of 64 mm x 160 mm forged slab of tested steel 14Cr1Mo (/% : 0.12C

0.57Si

0.48Mn

0.003P

0.001S

1.20Cr

0.42Mo

0.01V

0.00lNb

0.017Al

0.003As

0.00lSb

0.002Sn) is 30t EBT EAF-LF-VD-13t casting ingot- forging. With the process measures including using quality scrap

controlling EAF end [P

]

≤0.002% and end [C

]

0.07%〜0.10%

adding Al in EAF tapping for pre-deoxidization of liquid

LF maintaining white slag ≥30 min and VD 67 P≥25 min

and after VD adding 0.35 kg/1 Ca-Si wire

the gas content in steel is 1.5 x 10

-6

]

17 x 10

-6

]

and 70 x 10

-6

]

the ratting o

f each nonmetallic inclusions in steel is 0.5

and with conditioning treatment at 930℃

A. C.

quenching at 910°C

W. C. and tempering at 700°C

A. C.

and simulate heat treatment after welding ( PWHT) at 690°C for 4~20h. F. C.

the mechanical properties of steel meets the requirement of reference standard NB/T470008-2010.

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