典型文献
lmproving cleanliness of 30Cr2Ni4MoV low-pressure rotor steel by CaO-SiO2-MgO-Al2O3 slag refining
文献摘要：
The optimal composition of a CaO-SiO2-Al2O3-MgO slag in the ladle furnace refining process was investigated to precisely control the contents of[O]and[Si]and improve the cleanliness of 30Cr2Ni4MoV steel.The iso-[O]lines and iso-[Si]lines of the equilibrium between the CaO-SiO2-Al2O3-MgO refining slag and 30Cr2Ni4MoV steel at 1873 K were calculated by the thermodynamic software FactSage 7.3,and the activities of SiO2,A12O3 and CaO in the refining slag were discussed to achieve the optimal composition range of the refining slag.Finally,combined with high-temperature"slag-steel"equilibrium experiments,the effects of different refining slags on the oxygen contents,chemical composi-tions,quantities and sizes of inclusions in steels were studied,and then the thermodynamic formation mechanism of MgAl2O4 inclusions in 30Cr2Ni4MoV steel was discussed.The results showed that the contents of dissolved[O]and[Si]in steel can be controlled below 10×10-6 and 0.05％,respectively;when the slag basicity is above 7,the CaO/Al2O3 ratio is above 1,and the mass fraction of SiO2 in the slag does not exceed 7％.The chemical composition of the slag has a great influence on the removal and composition of inclusions.The assessed stability phase diagrams of MgO,Al2O3 and MgO·Al2O3 inclusion formation in the Fe-Al-Mg-O system calculated by FactSage 7.3 show good agreement with the experimental results.
文献关键词：
中图分类号：
作者姓名：
Yong-bo Peng;Cheng-song Liu;Ling Yang;Song-wei Hou;Ri-jin Cheng;Hua Zhang;Hong-wei Ni
作者机构：
The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China;Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China;Huangshi Product Quality Supervision and Inspection Institute,Huangshi 435000,Hubei,China
文献出处：
引用格式：
[1]Yong-bo Peng;Cheng-song Liu;Ling Yang;Song-wei Hou;Ri-jin Cheng;Hua Zhang;Hong-wei Ni-.lmproving cleanliness of 30Cr2Ni4MoV low-pressure rotor steel by CaO-SiO2-MgO-Al2O3 slag refining)[J].钢铁研究学报（英文版）,2022(09):1434-1445
A类：
lmproving,30Cr2Ni4MoV
B类：
cleanliness,pressure,rotor,by,CaO,SiO2,MgO,Al2O3,refining,optimal,composition,ladle,furnace,process,was,investigated,precisely,contents,improve,iso,equilibrium,between,were,calculated,thermodynamic,software,FactSage,activities,A12O3,discussed,achieve,range,Finally,combined,high,temperature,experiments,effects,different,slags,oxygen,chemical,tions,quantities,sizes,inclusions,steels,studied,then,formation,mechanism,MgAl2O4,results,showed,that,dissolved,can,controlled,below,respectively,when,basicity,above,ratio,mass,fraction,does,not,exceed,great,influence,removal,assessed,stability,phase,diagrams,system,good,agreement,experimental
AB值：
0.402116
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