中间包微气泡冶金技术发展

doi:10.13228/j.boyuan.issn1005-4006.20210056

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Abstract Fine bubbles produced in tundish have excellent abilities to help inclusion float and remove. The tundish fine bubble refining technologies were summarized and the literature related to the argon injection into ladle shroud technology was analyzed in detail. The results show that utilizing the molten steel with large turbulent energy in tundish to split bubbles into smaller ones can form a kind of high efficiency inclusion removal technology. Some new technologies are being developed, and the argon injection into ladle shroud technology has a good prospect. The industrial trial of "cold steel sheet sampling method " shows that fine dispersed argon bubbles can be formed in molten steel by the argon injection into ladle shroud technology, most of which are less than 2 mm in diameter. There are two stages during the formation process of fine bubbles in ladle shroud, bubble detachment in wall orifice and detached bubble being split into smaller ones in turbulent steel. The latter has an obvious effect on the shear fracture of argon bubble.There exist many reports on water model of the argon injection into ladle shroud technology, but few on numerical simulation, and the industrial experimental research is just beginning. We need to do more in-depth works.

Key words： tundish fine bubble inclusion argon injection into ladle shroud cold steel sheet sampling

Received: 13 May 2021

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	Articles by authors
	ZHANG Shuo
	LIU Jian-hua
	SU Xiao-feng
	LI Wei

Cite this article:

ZHANG Shuo,LIU Jian-hua,SU Xiao-feng等. Development of fine bubble metallurgy in tundish[J]. CONTINUOUS CASTING, 2021, 40(5): 34-42.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20210056 OR http://www.chinamet.cn/Jweb_lz/EN/Y2021/V40/I5/34

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