摘要
针对轴承钢精炼过程中全氧含量的控制问题,基于熔渣分子与离子共存理论(IMCT),建立了CaO-SiO_2-MgO-Al_2O_3-FeO精炼渣系在1 853 K时炉渣最适碱度的计算模型,并对该渣系最适碱度的影响因素进行了讨论分析。结果表明:①在不同的FeO含量时,N_(FeO)均在碱度为3左右时出现最大值,最适碱度基本不随FeO含量的变化而改变。②MgO含量对最适碱度有较大的影响。随着MgO含量的增加,最适碱度呈减小的趋势。③Al_2O_3含量对最适碱度的影响与MgO相反,随着Al_2O_3含量的增加,最适碱度明显增大。
The fatigue life of bearing steel is closely related to the total oxygen content in the steel.Aimming at the control of T[O]in the bearing steel during refining process,a calculation model of optimal basicity for the refining slag CaO-SiO2-MgO-Al2O3-FeO at 1 853 K is established,based on the ion and molecule coexistence theory(IMCT).And the influence factors on optimal basicity for the slag system are discussed and analyzed.The results show that:①For different FeO content,the maximum value of NFeO occured when the basicity are all around 3,the optimal basicity basically does not change with the variation of FeO content.②The content of MgO has a great influence on the optimal basicity,with the increase of MgO content,the optimal basicity decreased.③The effect of Al2O3 content on the optimal basicity is opposite to that of MgO.With the increase of Al2O3 content,the optimal basicity increases significantly.
作者
雷家柳
李德胜
朱航宇
Lei Jialiu;Li Desheng;Zhu Hangyu(School of Materials Science and Engineering,Hubei Polytechnic University Metallurgy Engineering Department,Huangshi435003,Hubei,China;Daye Special Steel Corp.,Ltd.,Huangshi435000,Hubei,China;Key Laboratory for Ferrous Metallurgyand Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan430081,Hubei,China)
出处
《钢铁钒钛》
CAS
北大核心
2019年第2期107-111,共5页
Iron Steel Vanadium Titanium
基金
国家自然科学基金资助项目(51704105
51604198)
湖北省教育厅科学技术研究项目(Q20174504)
关键词
轴承钢
精炼渣
共存理论
最适碱度
计算模型
bearing steel
refining slag
coexistence theory
optimal basicity
calculation model
