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Characteristic Analysis of Solidified Crust for Basic Tundish Flux With Al-Killed Steel Casting
Alternative TitleCharacteristic Analysis of Solidified Crust for Basic Tundish Flux With Al-Killed Steel Casting
Wang Deyong; Zhang Zhixiang; Wang Huihua; Jiang Maofa
2011
Source PublicationJOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
ISSN1006-706X
Volume18Issue:1Pages:16-19
AbstractThe 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.
Other AbstractThe 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
KeywordFERRITIC STAINLESS-STEEL INCLUSION SLAG tundish flux solidified crust spinel formation approach
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China]
CSCD IDCSCD:4381652
Citation statistics
Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/154629
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
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.
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