| 摘要 |
PURPOSE:To manufacture a superconductive coil having high performance and stability by a method wherein the bobbin thereof is composed of an organic fiber having negative expansion coefficient as well as a fiber plastics integrally molded with a resin. CONSTITUTION:Within a superconductive coil wound around a tubular or columnar bobbin comprising a combination of an organic fiber having a negative expansion coefficient and a carbon fiber as well as a fiber reinforced plastics integrally molded with a resin. Otherwise, the organic fiber having the negative expansion coefficient is a high powerful, high elastic modulus polyethylene fiber or furthermore, the organic fiber and the carbon fiber are alternately wound around the bobbin making + or -40-90 deg. angle with the axial direction to be integrally molded with a resin. Through these procedures, the superconductive coil in the less training times and the maximum current value having the stability and high performance can be manufactured. |
