GCrl5轴承钢精炼渣对夹杂物祛除行为的研究

特殊钢 ›› 2022, Vol. 43 ›› Issue (3): 14-20.

所属专题：轴承钢；夹杂物控制

GCrl5轴承钢精炼渣对夹杂物祛除行为的研究

赵新凯¹, 石永生¹, 刘世义¹, 王德龙¹, 张炯明²

1巨能特钢有限公司炼钢厂，寿光262700；
2北京科技大学钢铁冶金新技术国家重点实验室，北京100083

收稿日期:2021-09-11 出版日期:2022-06-01 发布日期:2022-06-16
作者简介:赵新凯(1980-)，男，博士(2015年北京科技大学)，工程师, 冶金、连铸工艺研究。

Study on Behavior of Inclusions Removal from GCr15 Bearing Steel by Refining Slag

Zhao Xinkai¹, Shi Yongsheng¹, Liu Shiyi¹, Wang Delong¹, Zhang Jiongming²

1 Steel Mill, Juneng Special Steel Co Ltd, Shouguang 262700；
2 State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083

Received:2021-09-11 Published:2022-06-01 Online:2022-06-16

摘要/Abstract

摘要： 通过建立的夹杂物穿越钢渣界面运动模型，研究了精炼渣对夹杂物的吸附现象。结果表明，夹杂物粒径、表面张力和熔渣粘度是影响夹杂物冲破钢渣界面的重要参数，大型夹杂物中粒径和熔渣粘度起决定作用，而 ≤ 20㎛级别的小型夹杂物中仅表面张力起决定作用;大型夹杂物冲破钢渣界面的能力远大于小型夹杂物。针对小型夹杂物难以吸附的问题，运用了夹杂物运动模型和熔渣、钢液表面张力模型，研究了表面张力对吸附过程的影响。结果表明，直径≤ 122.9 ㎛尺寸的夹杂物均无法穿越钢渣界面，回弹至钢液一侧，由此得出：无法通过调整精炼渣用以吸附≤ 122.9 ㎛夹杂物以达到进一步降低钢中氧含量的目的。

Abstract: By established a model of inclusions dynamic at the steel-slag interface the refining slag absorbing inclusions phenomenon is studied. Results show that certain parameters, i. e. particle size, interfacial tension and slag viscosity ,determine the inclusions transfer behavior. Paiticle size and interfacial tension determine definitely large size inclusions transfer behavior, while interfacial tension only determines definitely micro size inclusions rating ≤20 ㎛ transfer behavior. Macro-sizes affects the inclusions displacement more than the Micro-sizes. For the removal of Micro-inclusions, by inclusions mathematical dynamic model coupled by steel and slag surface tension models, the effect of interfacial tension on obsorbing process has been studied. It is obvious that the particles blow 122.9 ㎛ size could be rebounded into steel when they are flowed to steel-slag interface layer. It is obtained that there is no way by re-designing refining slags to effectively remove ≤ 122. 9 ㎛ micro-inclusions from steel to slag layer and further to get the aim to decrease the oxygen content in steel.

赵新凯, 石永生, 刘世义, 王德龙, 张炯明. GCrl5轴承钢精炼渣对夹杂物祛除行为的研究[J]. 特殊钢, 2022, 43(3): 14-20.

Zhao Xinkai, Shi Yongsheng, Liu Shiyi, Wang Delong, Zhang Jiongming. Study on Behavior of Inclusions Removal from GCr15 Bearing Steel by Refining Slag[J]. Special Steel, 2022, 43(3): 14-20.

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GCrl5轴承钢精炼渣对夹杂物祛除行为的研究

Study on Behavior of Inclusions Removal from GCr15 Bearing Steel by Refining Slag

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