| B级钢中频感应熔炼用镁砂坩埚的失效与防护 |
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| 引用本文： | 肖黎明,张励忠,张密兰,胡远猛,李海开,韩淑霞.B级钢中频感应熔炼用镁砂坩埚的失效与防护[J].铸造技术,2006,27(3):201-204. |
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| 作者姓名： | 肖黎明 张励忠 张密兰 胡远猛 李海开 韩淑霞 |
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| 作者单位： | 北京交通大学机械与电子控制工程学院,北京,100044 |
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| 基金项目： | 北京交通大学校科研和教改项目 |
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| 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。
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| 关 键 词： | B级钢 中频感应 镁砂坩埚 失效分析 防护对策 |
| 文章编号： | 1000-8365(2006)03-0201-04 |
| 收稿时间： | 10 28 2005 12:00AM |
| 修稿时间： | 12 24 2005 12:00AM |
Failure and Protection of Magnesia Crucible Used in the Medium-frequency Induce Furnace for B Grade Steel Melting |
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| XIAO Li-ming,ZHANG Li-zhong,ZHANG Mi-lan,HU Yuan-meng,LI Hai-kai,HAN Shu-xia.Failure and Protection of Magnesia Crucible Used in the Medium-frequency Induce Furnace for B Grade Steel Melting[J].Foundry Technology,2006,27(3):201-204. |
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| Authors: | XIAO Li-ming ZHANG Li-zhong ZHANG Mi-lan HU Yuan-meng LI Hai-kai HAN Shu-xia |
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| Affiliation: | School of Mechanical and Electronic Control Engineering, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | 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. |
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| Keywords: | B grade steel Medium-frequency induce Magnesia crucible Failure analysis Preventive measure |
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