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Metallurgical and Materials Transactions B
Published in: Metallurgical and Materials Transactions B 2/2014

01-04-2014

Effect of Na2O and B2O3 on the Crystallization Behavior of Low Fluorine Mold Fluxes for Casting Medium Carbon Steels

Authors: Juan Wei, Wanlin Wang, Lejun Zhou, Daoyuan Huang, Huan Zhao, Fanjun Ma

Published in: Metallurgical and Materials Transactions B | Issue 2/2014

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Abstract

An investigation has been conducted to study the effect of Na2O and B2O3 on the crystallization behavior of low fluorine (F) mold powders for casting medium carbon (MC) steels in this article. The results of this study indicated that B2O3 tends to lower the crystallization temperature and increase crystallization incubation time of the low F powders; however, Na2O plays an opposite role compared with that of B2O3. The crystalline phase of Ca11Si4B2O22 was formed in Sample D2 [F = 3 pct, Na2O = 10 pct, B2O3 = 8 pct (in wt pct)], which exhibited the most similar crystallization behavior to that of cuspidine, such that Sample D2 showed closest crystallization kinetics to that of a conventional high-F mold slag for casting MC steels. The precipitated crystalline phases for all the samples have been analyzed and discussed in the article.
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Metadata
Title
Effect of Na2O and B2O3 on the Crystallization Behavior of Low Fluorine Mold Fluxes for Casting Medium Carbon Steels
Authors
Juan Wei
Wanlin Wang
Lejun Zhou
Daoyuan Huang
Huan Zhao
Fanjun Ma
Publication date
01-04-2014
Publisher
Springer US
Published in
Metallurgical and Materials Transactions B / Issue 2/2014
Print ISSN: 1073-5615
Electronic ISSN: 1543-1916
DOI
https://doi.org/10.1007/s11663-013-9957-y

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