| 摘要 |
PURPOSE:To execute addition of a little quantity of a component under high yield by using green compact blending additional element to sponge titanium or powdered titanium as core material, melting by heating cylindrical body winding a thin sheet of main element on the outside from one end, and solidifying by dropping the drips into the mold. CONSTITUTION:The green compact 1 blending a little quantity of the additional element to the sponge titanium, etc., is made to the core material, and melting raw material 4 is made by winding alternately Ti-made thin sheet 2 and Nb- made thin sheet 3 on this core material. The melting raw material 4 arranged in a vacuum room 5 of electron beam furnace is irradiated by electron beam through an electron gun 6 from the lower part thereof while rotating and descending the raw material. In this way, Ti, etc., in the material 4 is melted without any loss, and is made to the drip and solidified in the metal pool 8 in the water cooled copper mold 7, to draw from the mold 7 as the Nb-Ti series alloy cast block 9. Thus, the material having high melting point is not remained to melt and Nb-Ti series alloy casting block for super conductivity material having uniform composition is stably produced at comparatively few number of process.
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