摘要
根据B级钢中频感应熔炼过程中镁砂坩埚的工作环境特点,指出坩埚失效的主要形式:热应力开裂、侵蚀变薄、表层剥落、钢液渗透、表面结渣等,并对其失效机理进行分析。通过调整镁砂的颗粒级配,采用多相复合技术,在坩埚的特定区域使用特定坩埚材料的分区捣筑、合理安排烧结工艺、精心操作、精心修补。从而提高了坩埚使用寿命。
According to the environment characteristics of magnesia crucible during melting B grade steel by medium-frequency induce furnace, the main failure forms of magnesia crucible, such as crack for thermalstress, thinning by corrosion, scaling of surface-layer, filtering of steel liquid, and slag-bonding on surface-layer, were pointed out and their failure machanism were analyzed. Through adjusting mixture ratio of grain-grades, adopting compound multiphase and sub-area tamping technique in special area in crucible, arranging the technique of crucible sintering and operating, repairing carefully,so that the service life of crucible is improved.
出处
《铸造技术》
EI
CAS
北大核心
2006年第3期201-204,共4页
Foundry Technology
基金
北京交通大学"十五"重大科研基金项目(230-12)
关键词
B级钢
中频感应
镁砂坩埚
失效分析
防护对策
B grade steel
Medium-frequency induce
Magnesia crucible
Failure analysis
Preventive measure
