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    • 40. 发明公开
    • Method and assembly for consumable electrode vacuum arc melting
    • Verfahren und Vorrichtung zur Halterung einer Abschmelzelektrode in einem Vakuum-Lichtbogenofen。
    • EP0499389A1
    • 1992-08-19
    • EP92300842.9
    • 1992-01-31
    • TITANIUM METALS CORPORATION
    • Poulsen, Eldon Ray
    • C22B9/20
    • C22B9/20
    • A method and electrode assembly for use in consumable electrode arc melting of metals and alloys, particularly titanium and titanium-base alloys. The method includes forming an assembly including an electrode of the metal or alloy to be melted. An elongated ring, which is of metal or alloy construction, has one end connected to one end surface of the electrode and another end connected to an electrode holder, which is connected to a source of electrical potential. The ring has an outside diameter less than the outside diameter of the electrode to form an annular marginal area on the end surface of the electrode. This annular marginal area is defined by the ring and the periphery of the end surface of the electrode. This assembly is positioned within a cooled mold of conductive material, which mold is also connected to a source of electrical potential. An electrical current is produced between the electrode and the mold to produce an arc from the end of the electrode to continuously melt the electrode to form an ingot. Melting is continued until the annular marginal area at least begins to melt and melting is discontinued before the marginal area melts completely away. Hence, the melting operation may be stopped before the electrode is completely melted away to result in contamination of the ingot by melting of material from the ring or electrode holder.
    • 一种用于消耗电极电弧熔化金属和合金,特别是钛和钛基合金的方法和电极组件。 该方法包括形成包括要熔化的金属或合金的电极的组件。 具有金属或合金结构的细长环具有连接到电极的一个端面的一端和连接到电位源的电极座的另一端。 环的外径小于电极的外径,以在电极的端面上形成环形边缘区域。 该环形边缘区域由电极的端面的环和周边限定。 该组件位于导电材料的冷却模具内,该模具也连接到电位源。 在电极和模具之间产生电流以从电极的端部产生电弧,以连续地熔化电极以形成晶锭。 熔融持续直到环形边缘区域至少开始熔化并且在边缘区域完全熔化之前停止熔化。 因此,在电极完全熔化之前可以停止熔化操作,从而通过从环或电极保持器熔化材料导致锭的污染。