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

被引：52
|
作者：
Wei, Juan [1 ]
Wang, Wanlin [1 ]
Zhou, Lejun [1 ]
Huang, Daoyuan [1 ]
Zhao, Huan [1 ]
Ma, Fanjun [1 ]
机构：
[1] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Peoples R China
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 2014年 / 45卷 / 02期
基金：
美国国家科学基金会;
关键词：
HOT THERMOCOUPLE TECHNIQUE; RADIATIVE HEAT-TRANSFER; BLAST-FURNACE SLAG; VISCOSITY; POWDERS; SYSTEM;
D O I：
10.1007/s11663-013-9957-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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. (C) The Minerals, Metals & Materials Society and ASM International 2013
引用
收藏
页码：643 / 652
页数：10
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