摘要
电渣重熔工艺是获取高洁净轴承钢的重要工艺技术,其所使用的精炼炉渣成分对轴承钢冶金质量有着重要的影响。本文针对传统的70%CaF_(2)-30%Al_(2)O_(3)精炼渣,进行了成分优化,通过加入少量的CaO、MgO以替代渣中部分CaF_(2)和Al_(2)O_(3),并对所设计的CaF_(2)-Al_(2)O_(3)-CaO-MgO四元渣系进行了熔点、黏度、密度、光学碱度和电导率等性能进行测试或计算。结果表明:CaO和MgO的加入能使炉渣熔化温度和粘度显著降低,密度、光学碱度和导电率等性能均有一定程度的提高。说明所设计的渣系较传统的"三七渣"综合性能有所提高,有利于提高电渣重熔过程中轴承钢的冶金质量。
The electroslag remelting process is an important technology for obtaining high-clean bearing steel.The composition of the refined slag used in it has an important influence on the metallurgical quality of the bearing steel.This article optimized the composition of the traditional 70%CaF_(2)-30%Al_(2)O_(3) refining slag.By adding a small amount of CaO and MgO to replace part of the CaF_(2) and Al_(2)O_(3) in the slag,and the designed CaF_(2)-Al_(2)O_(3)-CaO-MgO quaternary slag system has been tested or calculated for its melting point,viscosity,density,optical basicity and electrical conductivity.The results show that the addition of CaO and MgO can significantly reduce the melting temperature and viscosity of the slag,and the properties such as density,optical alkalinity and conductivity can be improved to a certain extent.It shows that the overall performance of the designed slag system is better than that of the traditional 70%CaF_(2)-30%Al_(2)O_(3) refining slag,which is beneficial to improve the metallurgical quality of bearing steel during the electroslag remelting process.
作者
杨韬
彭必友
唐祁峰
尹仕伟
YANG Tao;PENG Biyou;TANG Qifeng;YIN Shiwei(School of Materials Science and Engineering,Xihua University,Chengdu 610039,Sichuan,China;Panzhihua Iron and Steel Research Institute Co.,Ltd.,Panzhihua Iron and Steel Group,Panzhihua 617000,Sichuan,China)
出处
《四川冶金》
CAS
2021年第3期10-14,共5页
Sichuan Metallurgy
基金
四川省科技厅重点项目(2019YFG0511)。
关键词
电渣重熔
渣系
粘度
光学碱度
electroslag remelting
slag system
viscosity
optical alkalinity
