Junction production manner of the oxide super-conductivity wire rod, the oxide super-conductivity wire rod, super-conductivity coil and

摘要

Manufacturing method of oxide superconducting wire capable of producing a long wire as long as possible by connecting a relatively short wire material and suppressing the reduction of the critical current value due to strain when the connected wire is bent, and oxide superconducting wire material Superconducting Coyle and superconducting devices are provided. The method of manufacturing an oxide superconducting wire is when two superconducting superconducting wires (1) and (2) are bent in a method of connecting an oxide superconducting wire by joining a terminal portion of two oxide superconducting wires (1,2) by superposing one another A joining portion (L) is formed so as to reduce the strain amount of the end portion of the joint portion (L) formed by superposing the terminal portions together. The oxide superconducting wire material, the superconducting Coyle and the superconducting device have the junction portion (L) described above, and the strain amount of the end portion of the joining portion (L) is reduced as described above.