Effect of ESR on oxygen content and inclusions in GCr15 bearing steel

Chang Kaihua; Xu Tao; Zhu Chunli; Zhang Longfei; Su Yunlong; Shi Xiaofang; Chang Lizhong

doi:10.7513/j.issn.1004-7638.2021.04.029

Volume 42 Issue 4

Aug. 2021

Turn off MathJax

Article Contents

Article Navigation > IRON STEEL VANADIUM TITANIUM > 2021 > 42(4): 175-181

Chang Kaihua, Xu Tao, Zhu Chunli, Zhang Longfei, Su Yunlong, Shi Xiaofang, Chang Lizhong. Effect of ESR on oxygen content and inclusions in GCr15 bearing steel[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(4): 175-181. doi: 10.7513/j.issn.1004-7638.2021.04.029

Citation:

Chang Kaihua, Xu Tao, Zhu Chunli, Zhang Longfei, Su Yunlong, Shi Xiaofang, Chang Lizhong. Effect of ESR on oxygen content and inclusions in GCr15 bearing steel[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(4): 175-181. doi: 10.7513/j.issn.1004-7638.2021.04.029

Citation:

PDF( 1339 KB)

Effect of ESR on oxygen content and inclusions in GCr15 bearing steel

doi: 10.7513/j.issn.1004-7638.2021.04.029

1.
School of Metallurgy Engineering, Anhui University of Technology, Ma’anshan 243002, Anhui,China
2.
Anhui Fukai Special Material Co., Ltd., Jixi 245300, Anhui,China

Received Date: 2021-01-04
Publish Date: 2021-08-10

Abstract

Abstract

Electroslag remelting has a positive effect on improving the purity of steel, but it will increase oxygen for low oxygen content steel. In this paper, GCr15 bearing steel was used as consumable electrode to study the variation of oxygen content and inclusions in bearing steel with different slag systems under atmospheric environment and Ar protection. It is found out that the oxygen content in ESR ingot decreases with the decrease of the alumina content in the slag system when the CaF₂-Al₂O₃-CaO ternary slag system is used for ESR of GCr15 bearing steel under the protection of argon, while the oxygen content in ESR ingot remelted with the slag system without Al₂O₃ is the lowest. The diameter of inclusions in ESR ingot remelted under the protection of argon is smaller than that of steel remelted with the same slag system in air. The increase of oxygen content is mainly due to the high temperature of slag pool during ESR, which leads to the poor stability of Al₂O₃ in slag.
- electroslag remelting,
- GCr15 bearing steel,
- oxygen,
- inclusion

FullText(HTML)

References(14)

References

[1]	Bhadeshia H K D H. Steels for bearings[J]. Progress in Materials Science, 2012,57(2):268−435. doi: 10.1016/j.pmatsci.2011.06.002
[2]	Zhou Deguang, Xu Weiguo, Wang Ping, et al. Control and effect of oxygen in ESR process of bearing steel[J]. Iron and steel, 1998,33(3):13−17. (周德光, 徐卫国, 王平, 等. 轴承钢电渣重熔过程中氧的控制及作用研究[J]. 钢铁, 1998,33(3):13−17.
[3]	（王昊. H13钢中夹杂物控制及电渣重熔中的转变行为研究[D]. 北京: 北京科技大学, 2019.） Wang Hao. Control of inclusions in H13 steel and study on transformation behavior in ESR[D]. Beijing: Beijing University of Science and Technology, 2019.
[4]	（李世健. 电渣重熔G20CrNi2Mo轴承钢过程洁净度控制机理及工艺[D]. 北京: 北京科技大学, 2020.） Li Shijian. Cleanliness control mechanism and process of ESR G20CrNi2Mo bearing steel[D]. Beijing: Beijing University of Science and Technology, 2020.
[5]	Shi Chengbin, Wang Hui,Li Jing. Effects of reoxidation of liquid steel and slag composition on the chemistry evolution of inclusions during electroslag remelting[J]. Metallurgical & Materials Transactions B , 2018,49(4):1675-1689.
[6]	Zhan Dongping, Zhang Yangpeng, Liu R J, et al. Effect of protected electroslag remelting on cleanliness of G20CrNi2Mo bearing steel[J]. Ironmaking & Steelmaking, 2016,44(5):1−9.
[7]	Wang Changsheng, Liu Shengguo, Xu Mingde, et al. Reducing oxygen content of GCr15 steel by ESR[J]. Special Steel, 1997,(3):31−35. (王昌生, 刘胜国, 徐明德, 等. 降低电渣重熔GCr15钢的氧含量[J]. 特殊钢, 1997,(3):31−35.
[8]	Wang Qiang, Li Guangqiang, Gao Yunming, et al. A coupled mathematical model and experimental validation of oxygen transport behavior in the electro-slag refining process[J]. Journal of Applied Electrochemistry, 2017,47(4):1−12.
[9]	Li Shijian, Cheng Guoguang. Kinetic analysis of aluminum and oxygen variation of G20CrNi2Mo bearing steel during industrial electroslag remelting process[J]. ISIJ International, 2017,57(12):2148−2156. doi: 10.2355/isijinternational.ISIJINT-2017-227
[10]	Li Shijian, Cheng Guoguang, Miao Zhiqi, et al. Evolution of oxide inclusions in G20CrNi2Mo carburized bearing steel during industrial electroslag remelting[J]. ISIJ International, 2018,58(10):72.
[11]	Yan Qingzhong, Chen Lie, Li Fawen, et al. Optimization of remelting process of blade steel 1Cr12Ni2Mo2VN 1.1t ESR ingot[J]. Special Steel, 2015,36(2):44−47. (严清忠, 陈列, 李发文, 等. 叶片钢1Cr12Ni2Mo2VN 1.1t电渣锭重熔工艺的优化[J]. 特殊钢, 2015,36(2):44−47. doi: 10.3969/j.issn.1003-8620.2015.02.012
[12]	Chang Lizhong, Yang Haisen, Li Zhengbang. Study on oxygen behavior in electroslag remelting process[J]. Steelmaking, 2010,26(5):46−50. (常立忠, 杨海森, 李正邦. 电渣重熔过程中的氧行为研究[J]. 炼钢, 2010,26(5):46−50.
[13]	Chang Lizhong, Shi Xiaofang, Cong Junqiang. Study on mechanism of oxygen increase and countermeasure to control oxygen content during electroslag remelting process[J]. Ironmaking & Steelmaking, 2014,41(3):182−186.
[14]	（李正邦. 电渣冶金的原理与实践[M]. 北京: 冶金工业出版社, 2010: 8.） Li Zhengbang. Principle and practice of electroslag metallurgy[M]. Beijing: Metallurgical Industry Press, 2010: 8.