| 摘要 |
PURPOSE:To improve stability of a superconductive conductor without increasing AC loss by compressing strand wires for mutually sticking such strand with solder. CONSTITUTION:A surface of a core 1a is applied with a prescribed amount of solder plating 2, and six pieces of surrounding strands are arranged centering about the core 1a for being stranded. Then, the whole is compressed and heated by high-frequency heating or the like to melt solder, with which the core 1a is coated, for sticking the surrounding strands to the core 1a. By compressing each strand 1 including the core 1a in this way, and mutually sticking with the solder 2, a thermal conductive area among respective strands, especially between the core 1a and the surrounding strands 1 is increased so as to sufficiently cool the core 1a also. Further, since the core 1a is electrically connected with the surrounding strands 1, it becomes a flow path of the current even being in a constantly conductive state to be able to reduce calorific value.
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