Characteristic Analysis of Solidified Crust for Basic Tundish Flux With Al-Killed Steel Casting

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	Characteristic Analysis of Solidified Crust for Basic Tundish Flux With Al-Killed Steel Casting
其他题名	Characteristic Analysis of Solidified Crust for Basic Tundish Flux With Al-Killed Steel Casting
	Wang Deyong; Zhang Zhixiang; Wang Huihua; Jiang Maofa
	2011
发表期刊	JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
ISSN	1006-706X
卷号	18 期号:1 页码:16-19
摘要	The solidified crust was harmful to Al-killed steel casting using a basic tundish flux. After sampling from an actual tundish, XRD, SEM and EDX examinations were carried out to analyze the microstructure of solidified crusts. The conclusions were obtained as follows: main crystallization phases existing in tundish crust were Ca-12 A(14) O-33, Ca2SiO4 and a little spinel; spinel and Ca2SiO4 distributed between the grain boundaries of Ca-12 A(14) O-33, which increased the connection strength of crystallization phases by pinning grain boundary, density or hardness of solidified crust maybe also significantly increases; when initial composition of tundish flux was located in spinel region of CaO-SiO2-Al2O3-10%MgO phase diagram, it was easier to precipitate spinel from molten slag; three approaches of spinet formation in flux were summarized. When flux was saturated with magnesia on the metal/flux interface. MgO in flux was reduced by dissolved aluminum and then formed spinel. On the interface of steel/refractory, with feasible aluminum content, it was also easy to form spinel, and spinel inclusions will be floated and captured by tundish flux.
其他摘要	The solidified crust was harmful to Al-killed steel casting using a basic tundish flux. After sampling from an actual tundish, XRD, SEM and EDX examinations were carried out to analyze the microstructure of solidified crusts. The conclusions were obtained as follows: main crystallization phases existing in tundish crust were Ca_(12) A_(14)O_(33), Ca_2SiO_4and a little spinel; spinel and Ca_2SiO_4distributed between the grain boundaries of Ca_(12)A_(14)O_(33), which increased the connection strength of crystallization phases by pinning grain boundary, density or hardness of solidified crust maybe also significantly increases; when initial composition of tundish flux was located in spinel region of CaO-SiO_2-Al_2O_3-10%MgO phase diagram, it was easier to precipitate spinel from molten slag; three approaches of spinel formation in flux were summarized. When flux was saturated with magnesia on the metal/flux interface, MgO in flux was reduced by dissolved aluminum and then formed spinel. On the interface of steel/refractory, with feasible aluminum content, it was also easy to form spinel, and spinel inclusions will be floated and captured by tundish flux
关键词	FERRITIC STAINLESS-STEEL INCLUSION SLAG tundish flux solidified crust spinel formation approach
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China]
CSCD记录号	CSCD:4381652
引用统计	被引频次：2[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/154629
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Wang Deyong,Zhang Zhixiang,Wang Huihua,et al. Characteristic Analysis of Solidified Crust for Basic Tundish Flux With Al-Killed Steel Casting[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2011,18(1):16-19.
APA	Wang Deyong,Zhang Zhixiang,Wang Huihua,&Jiang Maofa.(2011).Characteristic Analysis of Solidified Crust for Basic Tundish Flux With Al-Killed Steel Casting.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,18(1),16-19.
MLA	Wang Deyong,et al."Characteristic Analysis of Solidified Crust for Basic Tundish Flux With Al-Killed Steel Casting".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL 18.1(2011):16-19.