| 摘要 |
An object of the invention is to offer a method of producing an oxide superconducting wire that has a uniform performance throughout its length so that a wire can be obtained with just the intended length. The method of producing an oxide superconducting wire comprises a drawing step for drawing a wire having a configuration in which a precursor powder of a (Bi, Pb) 2223 superconducting body is covered with a metal sheath, a primary rolling step for rolling the wire having undergone the drawing step, a primary heat-treating step for heat-treating the wire having undergone the primary rolling step, a secondary rolling step for rolling the wire having undergone the primary heat-treating step, and a secondary heat-treating step for heat-treating the wire having undergone the secondary rolling step. Between the primary rolling step and the secondary heat-treating step, the method further comprises a step of sealing a sheath-lacking portion on the outer surface of the sheath by using a material consisting mainly of silver.
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