w(CaO)/w(Al2O3)对高铝TRIP钢保护渣熔化及流动性能的影响

›› 2016, Vol. 32 ›› Issue (3): 24-28.

w(CaO)/w(Al2O3)对高铝TRIP钢保护渣熔化及流动性能的影响

付孝锦¹,文光华²,³,唐萍⁴

1. 内江师范学院
2. 重庆大学
3.
4. 重庆大学材料科学与工程学院冶金系

收稿日期:2015-11-25 修回日期:2016-01-25 接受日期:1900-01-01 出版日期:2016-06-05 发布日期:2016-06-15
通讯作者: 付孝锦 E-mail:fu-xj2007@163.com

Effects of w(CaO)/w(Al2O3) on melting and flow behaviors of mould fluxes for high aluminum TRIP steel

Received:2015-11-25 Revised:2016-01-25 Accepted:1900-01-01 Online:2016-06-05 Published:2016-06-15

摘要/Abstract

摘要： 为确保CaO-Al2O3渣系高铝TRIP钢保护渣浇铸过程中保护渣的消耗及对铸坯的润滑，研究了不同w(CaO)/w(Al2O3)对其熔化性能及流动性能的影响。结果表明：保护渣熔化温度随w(CaO)/w(Al2O3)的增加先升高再降低，当w(CaO)/w(Al2O3)=1.2时最高，熔化温度变化趋势与CaO-Al2O3二元相图中液相线变化趋势相反；黏度随着w(CaO)/w(Al2O3)的增加先降低再升高，当w(CaO)/w(Al2O3)=0.5~2.3时，黏度变化相对平缓，为0.08~0.142 Pa?s；转折点温度随着w(CaO)/w(Al2O3)的增加先降低，至w(CaO)/w(Al2O3)=2.0时最低，然后升高。综合考虑，CaO-Al2O3渣系高铝TRIP钢保护渣w(CaO)/w(Al2O3)取值在1.5~2.0比较合适。

关键词: 高铝TRIP钢, CaO-Al2O3渣系保护渣, 熔化温度, 黏度, 转折点温度

Abstract: For insuring the consumption of mold fluxes and lubricating the slab with CaO-Al2O3 mold fluxes during casting high aluminium TRIP steel，the effects of different w(CaO)/w(Al2O3) on melting and flow behaviors were studied. The results showed that the melting temperature increased and then decreased with the increase of w(CaO)/w(Al2O3), being a maximum at w(CaO)/w(Al2O3)=1.2. The trend of melting temperature change (with w(CaO)/w(Al2O3)) was contrary to the trend of liquidus temperature change of CaO-Al2O3 phase diagram. With the increase of w(CaO)/w(Al2O3), the viscosity firstly decreased and then increased. When w(CaO)/w(Al2O3)=0.5~2.3, the change of viscosity became mild, where the value of viscosity was 0.08~0.142 Pa?s. The break temperature varied with w(CaO)/w(Al2O3), being a minimum at w(CaO)/w(Al2O3)=2.0. Taking into account the melting temperature, viscosity, break temperature and crystallization behaviors of the mould fluxes, the optimum w(CaO)/w(Al2O3) was 1.5~2.0.

Key words: high aluminium TRIP steel, CaO-Al2O3 based mould fluxes, melting temperature, viscosity, break temperature

中图分类号:

H30/34

付孝锦文光华唐萍. w(CaO)/w(Al2O3)对高铝TRIP钢保护渣熔化及流动性能的影响[J]. , 2016, 32(3): 24-28.

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[7]	林腾昌;朱荣;杨凌志;王成杰;宁建成;宋景凌. 大管坯精炼渣研究及优化[J]. , 2013, 29(2): 14-18.
[8]	周云;张猛超;赵张发. 高强度低合金钢保护渣黏度和结晶温度的优化[J]. , 2012, 28(3): 66-69.
[9]	杨东明;杨治争;王延锋;饶江平;孙云虎;成军. 低碳钢板坯连铸保护渣的研究与应用[J]. , 2011, 27(6): 16-19,2.
[10]	袁晓峰;包燕平;岳峰;李朋欢. 洁净钢精炼渣控制工艺研究[J]. , 2011, 27(2): 45-47,5.
[11]	李波;张学军;王宏明. CaO-CaF2对钢包精炼顶渣性能的影响[J]. , 2008, 24(05): 5-8.