真空感应熔炼用氧化钙坩埚炉衬打结工艺研究

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英文篇名：Study on Lining Ramming Process of Calcium Oxide Crucible for Vacuum Induction Melting 作者：赵海斌 ; 陈孝兵 ; 曾钢 英文作者：ZHAO Haibin;CHEN Xiaobing;ZENG Gang;Institute of Materials, China Academy of Engineering Physics; 关键词：氧化钙坩埚 ; Mg ; O颗粒 ; 炉衬打结 英文关键词：calcium oxide crucible;;Mg O particles;;lining ramming 中文刊名：SJGY 英文刊名：Hot Working Technology 机构：中国工程物理研究院材料研究所; 出版日期：2018-06-06 14:12 出版单位：热加工工艺 年：2018 期：v.47;No.489 语种：中文; 页：SJGY201811028 页数：4 CN：11 ISSN：61-1133/TG 分类号：112-115

摘要

以不同粒径的Mg O颗粒制备氧化钙坩埚炉衬,研究了Mg O颗粒配比、坩埚与金属液温差等对坩埚性能和使用寿命的影响。结果表明:采用60%~70%的4.0~1.5 mm和30%~40%的<1.0 mm的Mg O颗粒配比作为坩埚炉衬材料具有较好性能,获得的炉衬致密度较高、热稳定性能更好。在500℃保温3 h进行坩埚除气处理,熔炼过程中坩埚与金属液温差小于600℃可延长坩埚使用寿命。
        The calcium oxide crucible lining was prepared by using Mg O particles with different particle sizes, and the effects of Mg O particle ratio, temperature difference between crucible and molten melt on the properties and service life of the crucible were studied. The results show that the Mg O particles of 4.0-1.5 mm with 60%-70% and that of <1.0 mm with 30%-40% as the crucible lining materials has good properties, and the obtained lining has higher density and better thermal stability. Degassing treatment of the crucible at 500℃for 3 h, and temperature difference between the crucible and molten melt less than 600℃ can prolong the service life of the crucible.

引文

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