公开(公告)号：US5248477A

公开(公告)日：1993-09-28

申请号：US964322

申请日：1992-10-21

申请人： William G. Green ,  Harvey L. King ,  Vladimir Petrovich ,  James E. Hillis ,  William E. Mercer, II

发明人： William G. Green ,  Harvey L. King ,  Vladimir Petrovich ,  James E. Hillis ,  William E. Mercer, II

IPC分类号： C22C1/02

CPC分类号： C22C1/02 ,  C22C1/06 ,  C22C21/10 ,  C22C22/00 ,  C22C23/02 ,  C22C23/06

摘要： A method for producing a high purity magnesium alloy is disclosed in which the alloying components are introduced in the molten state into molten magnesium. In accordance with the process of the invention, a predetermined amount of primary magnesium is heated and melted in a crucible. Predetermined amounts of desired alloying metals are selected and heated to their melting temperature in a separate crucible. The molten alloying metals are then introduced into the molten magnesium to substantially instantaneously alloy with the molten magnesium in a reaction raising the temperature of the melt. Elemental manganese when first alloyed with other alloying metals prior to its addition to the molten magnesium is found to consistently be more effective in reducing the iron impurity level of the melt to a level below 50 ppm. The introduction of a molten alloy of manganese and one or more rare earth metals into the molten magnesium, reduces a settling out of the rare earth metal from the melt and increases the alloying efficiency for the rare earth metal to greater than 80%. The efficiency of the process of the invention is substantially increased, the consumption of time and energy is decreased, and the production of magnesium chloride slag and gaseous HCl is avoided.

摘要翻译： 公开了一种高纯度镁合金的制造方法，其中将熔融状态的合金成分引入熔融镁中。 根据本发明的方法，将预定量的初级镁在坩埚中加热熔化。 选择预定量的所需合金金属并在单独的坩埚中将其加热至其熔融温度。 然后将熔融的合金金属引入熔融镁中，以使熔融镁基本上瞬间与熔融镁合金，从而提高熔体的温度。 在添加到熔融镁中之前首先与其它合金金属合金化的元素锰被发现一致地更有效地将熔体的铁杂质水平降低到低于50ppm的水平。 将锰和一种或多种稀土金属的熔融合金引入熔融镁中，减少了稀土金属从熔体中的沉降，并使稀土金属的合金化效率提高到80％以上。 本发明方法的效率显着增加，时间和能量的消耗减少，并且避免了生产氯化镁渣和气态HCl。