| 摘要 |
PURPOSE:To obtain a superconducting wire with mechanical strength and excellent superconductivity by inserting a core made of nonoxidizing material into a metal sheath and shrinking a composite body filled with at least one of the oxide superconductor and its precursor while forging it with dice. CONSTITUTION:At least one core 2 made of nonoxidizing material is inserted into a metal sheath 3, at least one of the oxide superconductor and the precursor of the oxide superconductor is filled to form a composite body 4. A rotary swaging device A is operated to push one end of the composite body 4 between dice 6.... The dice 6... are rotated while being reciprocated by the preset distance in the direction (a), thus the composite body 4 is forged in sequence from one end side and shrunk to obtain a composite body 11. No open circuit occurs while the composite body 4 is processed, and it is shrunk with a large processing factor. The external metal sheath portion is then removed from the composite body, heat treatment is applied to the exposed molding, an oxide superconductor 12 with uniform superconductivity is generated, and an oxide superconducting wire 13 with the core 2 at the center of the conductor is obtained. |
