【作者】 王征； 崔衡； 张开天； 陈斌； 庞在刚； 罗衍昭； 青靓；

【Author】 Wang Zheng;Cui Heng;Zhang Kaitian;Chen Bin;Pang Zaigang;Luo Yanzhao;Qing Jing;Engineering Research Institute,University of Science and Technology Beijing;Collaborative Innovation Center of Steel Technology,University of Science and Technology Beijing;Shougang Technology Research Center,Shougang Corporation;Hebei Shougang Qian’an Iron & Steel Co.,Ltd.;

【机构】 北京科技大学冶金工程研究院； 北京科技大学钢铁共性技术协同创新中心； 首钢技术研究院； 河北省首钢迁安钢铁有限责任公司；

【摘要】 为减弱高铝TRIP钢浇铸过程中渣-钢反应,从调节保护渣Al₂O₃/SiO₂及MnO含量进行热力学和高温渣-钢平衡研究,结果表明:提高渣中Al₂O₃/SiO₂比值可明显降低渣-钢反应性,反应前后成分及物性稳定,由0.16增至2.08,ΔG开始时变化显著,至1.18时趋于稳定;保护渣中加入MnO>1.5%后,可在一定程度上保护SiO₂,但反应后保护炸毁保护渣黏度仍然显著增大,故MnO的加入对保护渣反应性的改善效果较小。更多还原

【Abstract】 To weaken the reactivity of mold fluxes for Al-TRIP steel,changes of ratio of Al₂O₃/SiO₂ and MnO content were studied. The results showed that the reactivity sharply reduced with the increasing of Al₂O₃/SiO₂ ratio and the composition and physicochemical properties changedminor. When it changed from 0.16 to 2.08, the ΔG had a significant change until it reached 1.18. The addition of MnO（>1.5%） could protect SiO₂ in the slag to a certain extent. However, the viscosity of the slag after steel-slag interfacial reaction would still increase obviously. So the addition of MnO played a small role in weakening the reactivity of mold fluxes.更多还原