SUPERCONDUCTIVE WIRE MANUFACTURE METHOD

摘要

PURPOSE:To provide a superconductive wire manufacturing method with little loss of a superconductive alloy material. CONSTITUTION:Both ends of a metal pipe 1 filled with a superconductive alloy material 2 are covered with metal covers 3 whose thickness is 20-100% of the thickness of the metal pipe 1 to give a composite billet 4. In the extrusion- processed material obtained by extruding the composite billet, the tip part and the rear end part having a high advancing ratio are located in the metal covers and the superconductive alloy material located part has a low advancing ratio and thus an inferior part lacking the superconductive alloy material is lessened and as a result, the superconductive alloy material loss is lowered.