1.江阴兴澄特种钢铁有限公司特钢研究院,江阴 214429
2.北京科技大学绿色低碳钢铁冶金全国重点实验室,北京 100083
苗志奇(1993-),男,博士,工程师;E-mail:miaozhiqi_bj@163.com
收稿:2025-06-24,
网络首发:2025-09-19,
移动端阅览
苗志奇,尹青,陆长河等.高碳铬轴承钢 VD 处理中夹杂物CaO含量演变机制[J].特殊钢,
Miao Zhiqi,Yin Qing,Lu Changhe,et al.The Evolution Mechanism of Inclusion CaO Content in High Carbon Chromium Bearing Steel During VD Treatment[J].Special Steel,
通过工业试验和热力学计算,研究了VD处理过程中夹杂物CaO含量的演变机制,并分析了钢液和炉渣成分对钢渣反应的影响。研究发现,经过VD过程,炉渣中
w
[CaO]降幅达14%,而钢液中
w
[Al]的烧损率高达70%,表明在VD过程中发生了剧烈的钢渣反应,且夹杂物中的平均
w
[CaO]从VD前的6.8%升高到了11.3%,夹杂物尺寸增加。理想的动力学条件和VD过程中Ca的蒸发共同触发并有望进一步增强钢液中Al和炉渣中CaO之间的化学反应,使得炉渣中的Ca进入钢液,其中一部分溶解Ca会与钢液中低CaO或者无CaO的夹杂物接触并发生反应,使得夹杂物中的CaO含量升高。为了抑制VD过程的钢渣反应,可以采取提高炉渣中Al
2
O
3
含量、增加VD过程压力等措施。
The evolution mechanism of CaO content in inclusions during VD treatment was studied through industrial experiments and thermodynamic calculations, and the effects of steel liquid and slag composition on steel slag reaction were analyzed. The study found that after the VD process, the CaO content in the slag decreased by 14%, while the Al content in the molten steel had a burning loss rate of up to 70%, indicating that a intense
steel slag reaction occurred during the VD process. The average CaO mass fraction in the inclusions increased from 6.8% before VD to 11.3%, and the inclusion size increased. The ideal dynamic conditions and the evaporation of Ca during the VD process jointly trigger and were expected to further enhance the chemical reaction between Al in the molten steel and CaO in the slag, allowing Ca in the slag to enter the molten steel. Some of the dissolved Ca will come into contact with low CaO or CaO free inclusions in the molten steel and react, resulting in an increase in CaO content in the inclusions.In order to suppress the steel slag reaction during the VD process, measures such as increasing the Al
2
O
3
content in the slag and increasing the pressure during the VD process can be taken.
Uesugi T . Recent development of bearing steel in Japan [J]. Tetsu-to-Hagane , 1988 , 74 ( 10 ): 1889 - 1894 .
尹 青 , 曹文全 , 吴小林 , 等 . 高洁净轴承钢GCr15滚动接触疲劳机制研究 [J]. 特殊钢 , 2023 , 44 ( 5 ): 113 - 120 .
規泰小熊 , 久原田 , 達雄酒井 . 軸受鋼の長寿命回転曲げ疲労における内部起点型疲労破壊メカニズム [J]. 材料 , 2003 , 52 ( 11 ): 1292 – 1297 .
Hashimoto K , Fujimatsu T , Tsunekage N , et al . Study of rolling contact fatigue of bearing steels in relation to various oxide inclusions [J]. Materials & Design , 2011 , 32 ( 3 ): 1605 - 1611 .
张建斌 , 徐建飞 , 王昆鹏 , 等 . GCr15轴承钢连铸过程MgO·Al 2 O 3 夹杂物形成机理 [J]. 钢铁 , 2023 , 58 ( 5 ): 83 - 91 .
Monnot J , Héritier B , Cogne J . Relationship of melting practice, inclusion type, and size with fatigue resistance of bearing steels [C]. Philadelphia : American Society for Testing and Materials , 1988 : 149 – 165 .
Kato Y , Masuda T , Kawakami K , et al . Recent improvements in cleanliness in high carbon chromium bearing steel [J]. ISIJ International , 1996 , 36 : S89 - S92 .
张蓬朝 , 李光强 , 胡 可 , 等 . 精炼渣对钢中钛含量和洁净度的影响 [J]. 钢铁 , 2025 , 60 ( 2 ): 67 - 75+93 .
李伟涛 , 武法普 , 于光富 , 等 . GCr15轴承钢冶金生产中非金属夹杂物特性和演变规律 [J]. 特殊钢 , 2025 , 46 ( 1 ): 79 - 86 .
Shirabe K , Szekely J . A mathematical model of fluid flow and inclusion coalescence in the R-H vacuum degassing system [J]. Transactions of the Iron and Steel Institute of Japan , 1983 , 23 ( 6 ): 465 - 474 .
Zhang J , He Y , Liu J H , et al . The effects of Soluble Gas Floatation Technology on the flow field of ladle and inclusion removal in RH refine process [J]. Vacuum , 2019 , 168 : 108803 .
Yang G W , Wang X H , Huang F X , et al . Transient inclusion evolution during RH degassing [J]. Steel Research International , 2014 , 85 ( 1 ): 26 - 34 .
Treadgold C J . Behaviour of inclusions in RH vacuum degasser [J]. Ironmaking & Steelmaking , 2003 , 30 ( 2 ): 120 - 124 .
Kwon Y J , Zhang J , Lee H G . A CFD-based nucleation-growth-removal model for inclusion behavior in a gas-agitated ladle during molten steel deoxidation [J]. ISIJ International , 2008 , 48 ( 7 ): 891 - 900 .
Zheng S G , Zhu M Y . Modelling effect of circulation flow rate on inclusion removal in RH degasser [J]. Journal of Iron and Steel Research , International, 2016 , 23 ( 12 ): 1243 - 1248 .
Steneholm K , Andersson M , Jönsson P . Change of inclusion characteristics during vacuum degassing of tool steel [J]. Steel Research International , 2006 , 77 ( 6 ): 392 - 400 .
Riyahimalayeri K , Ölund P , Selleby M . Effect of vacuum degassing on non-metallic inclusions in an ASEA-SKF ladle furnace [J]. Ironmaking & Steelmaking , 2013 , 40 ( 6 ): 470 - 477 .
刘春伟 , 张 昊 , 曹 磊 , 等 . VD低碱度渣对GCr15轴承钢夹杂物的影响 [J]. 特殊钢 , 2023 , 44 ( 6 ): 78 - 82 .
李伟涛 , 武法普 , 于光富 , 等 . GCr15轴承钢冶金生产中非金属夹杂物特性和演变规律 [J]. 特殊钢 , 2025 , 46 ( 1 ): 79 - 86 .
Steneholm K , Andersson M , Nzotta M , et al . Effect of top slag composition on inclusion characteristics during vacuum degassing of tool steel [J]. Steel Research International , 2007 , 78 ( 7 ): 522 - 530 .
Almcrantz M , Andersson M A T , Jönsson P G . Determination of inclusion characteristics in the asea-SKF process using the modified spark-induced OES technique as a complement in studying the influence of top slag composition [J]. Steel Research International , 2005 , 76 ( 9 ): 624 - 634 .
0
浏览量
2
下载量
0
CSCD
0
CNKI被引量
关联资源
相关文章
相关作者
相关机构
京公网安备11010802024621