| 摘要 |
PURPOSE:To prevent the adhesion of the loops of a superconductive wire rod to each other during heat treatment when the wire rod is wound around a metallic bobbin and heat treated, by winding a metallic sheet around the bobbin in layers before the wire rod to be heat treated is wound around the bobbin. CONSTITUTION:A metallic sheet such as a Cu or stainless steel sheet is slightly loosely wound around the winding drum 3 of a metallic bobbin 2 in layers 4, 5, 6, 7. A superconductive wire rod 1 having a multicore structure is wound on the metallic sheet and heat treated in a heat treating furnace. Pressure applied by the expansion of the wire rod 1 during the heat treatment is absorbed in the loosely wound metallic sheet 4-7, so the adhesion of the loops of the wire rod 1 to each other due to the pressure is prevented.
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