GCr15轴承钢冶炼过程钢液洁净度变化

doi:10.13228/j.boyuan.issn0449-749x. 20130621

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Abstract T[O] and inclusions during EAF→LF→VD→Purging→CC process were investigated on GCr15 bearing steel. Through controlling carbon content at EAF tapping from 0.2% to 0.4%, adding aluminum and flux during tapping for deoxidation and pre-refining, making high basicity slag with little (TFe+MnO) content during LF refing, stirring the steel in VD and preventing steel reoxidation in tundish, bearing steel with [w(T[O])=8×10－6] can be produced. Inclusions changed in order of Al2O3→MgO·Al2O3→CaO-MgO-Al2O3 during the secondary refining process. The average size of inclusions decreased after ladle refining, while picked up after vacuum treatment, and continously decreased during purging and in tundish. Inclusion number can be reduced by 74% through VD process.

Received: 13 November 2013 Published: 02 November 2014

PACS:	GCr15 bearing steel
	inclusion
	T.O
	Al2O3
	Al2O3?MgO
	CaO-MgO-Al2O3
	ASPEX

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	Articles by authors
	YANG Guang-Wei
	HAO Xin
	YANG Die
	YU Xin-Hua
	HUANG Fu-Xiang
	YU Mo-Jun

Cite this article:

YANG Guang-Wei,HAO Xin,YANG Die等. Cleanliness of GCr15 Bearing Steel During Steelmaking Process[J]. Iron and Steel, 2014, 49(11): 31-35.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x. 20130621 OR http://www.chinamet.cn/Jweb_gt/EN/Y2014/V49/I11/31

[1]	Uesugi T. Recent development of bearing steel in Japan[J]. Transactions of the Iron and Steel Institute of Japan, 1988, 28(11): 893.
[1]	Uesugi T. Recent development of bearing steel in Japan[J]. Transactions of the Iron and Steel Institute of Japan, 1988, 28(11): 893.
[2]	Kawakami K, Taniguchi T, Nakashima K. Generation mechanisms of non-metallic inclusions in high-cleanliness steel[J]. Tetsu to Hagane-Journal of the Iron and Steel Institute of Japan, 2007, 93(12): 743.
[2]	Kawakami K, Taniguchi T, Nakashima K. Generation mechanisms of non-metallic inclusions in high-cleanliness steel[J]. Tetsu to Hagane-Journal of the Iron and Steel Institute of Japan, 2007, 93(12): 743.
[3]	庞洪亮, 边延君. 90t LF (VD) 精炼工艺对 GCr15 轴承钢氧含量的影响[J]. 特殊钢, 2006, 27(1): 57.
[3]	庞洪亮, 边延君. 90t LF (VD) 精炼工艺对 GCr15 轴承钢氧含量的影响[J]. 特殊钢, 2006, 27(1): 57.
[4]	阮小江, 姜周华, 龚伟, 等. 精炼渣对轴承钢中氧含量和夹杂物的影响[J]. 特殊钢, 2008, 29(5): 1.
[4]	阮小江, 姜周华, 龚伟, 等. 精炼渣对轴承钢中氧含量和夹杂物的影响[J]. 特殊钢, 2008, 29(5): 1.
[5]	董大西, 杨锋功, 刘勇, 等. 60t LD-LF-VD-CC 工艺生产低氧GCr15轴承钢[C]//第七届中国钢铁年会.北京, 2009:59.
[5]	董大西, 杨锋功, 刘勇, 等. 60t LD-LF-VD-CC 工艺生产低氧GCr15轴承钢[C]//第七届中国钢铁年会.北京, 2009:59.
[6]	于平, 陈伟庆, 冯军, 等. 高碱度渣精炼的轴承钢中夹杂物研究[J]. 钢铁, 2004, 39(7): 20.
[6]	于平, 陈伟庆, 冯军, 等. 高碱度渣精炼的轴承钢中夹杂物研究[J]. 钢铁, 2004, 39(7): 20.
[7]	艾新港, 包燕平, 吴华杰, 等. RH 工艺生产轴承钢脱氧和去除夹杂物研究[J]. 钢铁, 2009, 44(7): 43.
[7]	艾新港, 包燕平, 吴华杰, 等. RH 工艺生产轴承钢脱氧和去除夹杂物研究[J]. 钢铁, 2009, 44(7): 43.
[8]	耿克, 吴明, 翁韶华, 等. 高纯净 GCr15 轴承钢脆性夹杂物的控制[J]. 特殊钢, 2008, 29(5): 54.
[8]	耿克, 吴明, 翁韶华, 等. 高纯净 GCr15 轴承钢脆性夹杂物的控制[J]. 特殊钢, 2008, 29(5): 54.
[9]	刘旭兰, 吴晓东, 周丹, 等. 轴承钢精炼过程非金属夹杂物行为的研究[J]. 钢铁研究, 2009, 37(2): 27.
[9]	刘旭兰, 吴晓东, 周丹, 等. 轴承钢精炼过程非金属夹杂物行为的研究[J]. 钢铁研究, 2009, 37(2): 27.
[10]	刘绍康, 黄煌. 减少轴承钢和齿轮钢中大颗粒点状氧化物夹杂 (Ds) 的工艺实践[J]. 特殊钢, 2008, 29(5): 41.
[10]	刘绍康, 黄煌. 减少轴承钢和齿轮钢中大颗粒点状氧化物夹杂 (Ds) 的工艺实践[J]. 特殊钢, 2008, 29(5): 41.