| 摘要 |
PURPOSE:To obtain a precise winding of a flat type superconducting wire by covering the surface of helical groove in a bobbin body with a resin layer having corner part machined in right angle and laminating a coil of a flat type superconducting wire thereon thereby obtaining a bobbin having an accurate groove shape. CONSTITUTION:A winding groove 2 of bobbin body 1 is subjected, at the outer periphery thereof, to resin injection taping, as required, and then normal temperature curing epoxy resin is injected therein. Resin is injected unilaterally so that air is not trapped therein. After curing the resin, groove part 3 is machined so that an insulation film 4 provides desired film thickness and groove dimensions. A flat type superconducting wire 5 is then wound precisely on the insulation layer 4 thus obtaining a superconducting coil. The insulation layer 4 is provided with precise perpendicular corners by machining the injected resin. This method produces a highly reliable superconducting coil in which quenching is suppressed. |
