一种钛及钛合金屑状废料的电子束冷床熔炼回收方法

Electron beam cold hearth melting recovery method for titanium and titanium alloy chip scrap

Abstract

本发明提供了一种钛及钛合金屑状废料的电子束冷床熔炼回收方法,方法过程为:根据所熔炼钛及钛合金成分,称取纯钛屑状废料,或称取纯钛屑状废料和钛合金屑状废料中的一种或两种与海绵钛以及纯合金添加元素和/或中间合金混合的混合料,所述混合料中的纯钛及钛合金屑状废料添加量按质量百分比计为10%-90%;然后将其压制成电极块,用电子束冷床熔炼炉将所述电极块进行一次电子束冷床熔炼,得到钛或钛合金铸锭。本发明可以利用高达100%纯钛屑状废料生产出合格的纯钛铸锭,或利用高达90%钛及钛合金屑状废料,生产出合格的钛合金铸锭;只需要电子束冷床一次熔炼,不需要二次或三次熔炼。
The invention provides an electron beam cold hearth melting recovery method for titanium and titanium alloy chip-shaped waste. The method comprises a process that according to components of melted titanium and titanium alloy, pure titanium chip-shaped waste is weighed, or a mixture of one or two species of pure titanium chip-shaped waste and titanium alloy chip-shaped waste with sponge titanium and pure alloy additive elements and/or master alloy is weighed; the addition amount of pure titanium and titanium alloy chip-shaped waste in the mixture is counted as 10 to 90 percent according to mass percentage; the mixture is pressed to be an electrode block; and the electrode block is subjected to electron beam cold hearth melting once by use of an electron beam cold hearth melting furnace, so as to obtain a titanium or titanium alloy ingot. The method can utilize up to 100 percent of pure titanium chip-shaped waste to produce a qualified pure titanium ingot, or utilize up to 90 percent of titanium and titanium alloy chip-shaped waste to produce a qualified titanium alloy ingot. The method only needs electron beam cold hearth melting once but not twice or three times of melting.

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