Increasing Continuous - Continuous Casting Success Rate of Steel 38CrMoAl by Optimizing Deoxidation Process

周伟基; 薄永明; 吉海峰; 潘利; 战东平

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Increasing Continuous - Continuous Casting Success Rate of Steel 38CrMoAl by Optimizing Deoxidation Process

更新时间：2026-01-21

- Increasing Continuous - Continuous Casting Success Rate of Steel 38CrMoAl by Optimizing Deoxidation Process
- Special Steel Vol. 33, Issue 5, Pages: 40-42(2012)
- 作者机构：
  
  1. 抚顺特殊钢股份有限公司技术中心,抚顺,113001
  2. 东北大学材料与冶金学院，沈,110004
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：19 March 2012，
  
  Online First：10 October 2022，
  
  Published：10 October 2012
- 稿件说明：
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周伟基, 薄永明, 吉海峰, et al. Increasing Continuous - Continuous Casting Success Rate of Steel 38CrMoAl by Optimizing Deoxidation Process[J]. Special Steel, 2012, 33(5): 40-42.
DOI：

周伟基, 薄永明, 吉海峰, et al. Increasing Continuous - Continuous Casting Success Rate of Steel 38CrMoAl by Optimizing Deoxidation Process[J]. Special Steel, 2012, 33(5): 40-42. DOI：

摘要

研究了连铸38CrMoAl钢(/%:0.35～0.42C、0.20～0.45Si、0.30～0.60Mn、1.35～1.65Cr、0.15～0.25Mo、0.70～1.10Al)夹杂物类型和形成原因。通过优化脱氧制度:提高60 t EAF终点[C

]

≥0.010%

保持高碱度渣(R≥2.5)

出钢前2～3 min向熔池喷吹碳粉

控制(FeO)

出钢过程减少Si-Fe加入量;LF喂铝线并用铝粒扩散脱氧

采用(/%)50～60CaO、10～15SiO

、15～20Al

、≤0.7(FeO+MnO)、≤5MgO高碱度渣;做好VD后保护浇铸

有效地降低钢中Al

类型非金属夹杂物。结果表明

优化工艺后38CrMoAl钢连浇炉数达到9炉

夹杂物废品率≤1%。

Abstract

The types and formation cause of inclusions in casting steel 38CrMoAl (/%: 0. 35 ~ 0. 42C

0. 20 ~0. 45Si

0. 30 - 0. 60Mn

1. 35 〜1.65Cr

0. 15 ~ 0. 25Mo

0. 70 - 1. 10A1) are studied. By optimizing deoxidation technique including increasing 60 t EAF end [C

]

≥ 0. 010% and maintaining high basicity slag (R≥2. 5)

injecting carbon powder in bath before tapping for 2 - 3 min and controlling (FeO)

decreasing adding Si-Fe amount during tapping； in LF refining process feeding aluminium wire and using aluminium shot for diffusion deoxidation

using high basicity refining slag (/% ： 50 〜60CaO

10 - 15SiO

15 - 20A1

≤0. 7( FeO + MnO)

≤5MgO) ； and doing best shielding casting after VD process

the A1

types of non-metall

ic inclusions in steel is effectively decrease. Results show that with optimum process the continuous-continuous castin heats of steel 38CrMoAl are up to 9 heats

the rejection rate for inclusions is ≤l%.

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