PURPOSE: To increase the inside diameter of a cylindrical supporting mold, and a large diameter coil is explosion-compressed by a method wherein a superconducting oxide-filled coil is inserted between a pipe and a cylindrical supporting mold together with a pressure medium, the explosive filled in the pipe is exploded, and the coil is brought into the state of high density by conducting an explosive filling without having deformation and disconnection of wire of the coil.
CONSTITUTION: The inside diameter of a cylindrical supporting mold 1, on which a cylindrical metal mold or cylindrical ferro-concrete is used, is made larger than a pipe 5, the pipe 5 is concentrically inserted into the cylindrical supporting mold 1, and an annular gap is formed with a pipe 5 and the cylindrical supporting mold. Superconducting oxide-filled coil 3, on which superconducting-oxide-powder-filled Ag composite wire was wound, and a pressure medium 2 are inserted into the above- mentioned gap in such a manner that the coil 3 will be buried into the medium 2, and besides, an explosive 7 is filled in the pipe 5. Then, the explosive 7 in the pipe 5 is exploded, the coil 3 is brought into the state of high density by explosion- compressing, the high-density formed coil 3 is heat-treated in the atmospheric air or in an oxide atmosphere, and a large diameter coil can be formed easily.
| JPH0644409 | [Title of Invention] Dielectric Porcelain Composition |
| JPWO2007007587 | Orientation-controlled Co-oxide polycrystal |
SUZUKI GENICHI
TAKESHITA TAKUO
TONDA HIDEKI
TAKASHIMA KAZUKI
