高温合金真空感应熔炼过程中的脱氧反应

Deoxidation Reaction During Vacuum Induction Melting of Solution Superalloy

主要论述了真空感应熔炼高温合金过程中的脱氧工艺研究。分析了C、Al、Ca等元素对冶炼过程中脱氧反应的影响,并研究了Mg O坩埚的热力学平衡对去氧反应的影响。试验结果显示:合理的控制熔化工艺并通过C元素、Al元素、Ca元素等综合作用可以去除熔体中大部分氧,最终氧含量可以达到10ppmm以下。

This paper studied the deoxidation reaction in vacuum induction melting of superalloy. The influence adding C、Al and Ca on deoxidation was also analyzed. Thermodynamics calculation of the deoxidation reaction in Mg O crucible was done. The results show that most oxygen can be removed in melting period. Controlling melting technology and carbon content and aluminum、calcium addition amounts, oxygen content can be reduced to below 10 PPm.