镁及镁合金熔炼保护气体研究进展与发展趋势

Research Progress and Development Trend of Magnesium and Magnesium Alloy Smelting Protective Gases

镁合金在熔炼过程中极易发生氧化和燃烧,这使得其应用受到了限制。本文综述了镁及其合金熔炼过程中的熔剂保护方法、合金化阻燃保护方法以及气体保护方法和常用的主要保护气体,重点论述了近年来新型气体保护法的发展及其优点,指出了镁及镁合金熔炼过程中替代SF6的保护气体的发展趋势。

Magnesium alloy is easy to be oxidized and burned in melting process,which limits its application.The methods of flux protection,alloying flame retardant protection,gas protection and common main protective gases in the melting process of magnesium and its alloys were reviewed.The development and advantages of new gas protection method in recent years were emphatically discussed.The development trend of protection gas in magnesium and magnesium alloy melting process instead of SF6 was pointed out.