Study on Improving Cleanliness of Gear Steel FAS3420H Steelmaking by 60 t EAF-LF-VD-CC Flow Sheet
特殊钢2019年40卷第2期 页码:49-52
作者机构:
1. 抚顺特殊钢股份有限公司1总工办
2. 技术中心
3. 中心试验室,抚顺,113001
作者简介:
基金信息:
DOI:
中图分类号:
收稿:2018-10-11,
网络首发:2022-05-19,
纸质出版:2019-05-19
稿件说明:
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安杰, 李涛, 李刚, 等. 改善60 t EAF-LF-VD-CC流程冶炼齿轮钢FAS3420H洁净度的研究[J]. 特殊钢, 2019,40(2):49-52.
安杰, 李涛, 李刚, et al. Study on Improving Cleanliness of Gear Steel FAS3420H Steelmaking by 60 t EAF-LF-VD-CC Flow Sheet[J]. Special Steel, 2019, 40(2): 49-52.
安杰, 李涛, 李刚, 等. 改善60 t EAF-LF-VD-CC流程冶炼齿轮钢FAS3420H洁净度的研究[J]. 特殊钢, 2019,40(2):49-52.DOI:
安杰, 李涛, 李刚, et al. Study on Improving Cleanliness of Gear Steel FAS3420H Steelmaking by 60 t EAF-LF-VD-CC Flow Sheet[J]. Special Steel, 2019, 40(2): 49-52.DOI:
On the basis of actual production data in the first steelmaking plant of FuSteel
the objective is to improve cleanliness of automobile gear steel FAS3420H. The nozzle clogging and oxide inclusion are analysized by using SEM and the aim of solving nozzle clogging is definited
that is decreasing B inclusion in steel. Several measures were implemented
such as optimizing oxygen supply curve of EAF to reduce liquid steel oxidation
optimizing fluidity and basicity of LF slag to increase adsorption capacity of inclusion. The problem of nozzle clogging is solved during production process of continuous casting. The average oxygen mass fraction in production can reach to 9. 2 x 10~6
B thin series rating of inclusions is no more than 1. 0 and B coarse series rating of inclusions is less than or equal to 0. 5 in bar.