Agency of Industrial Science and Technology

The Fujikura Cable Works Limited

Itaru Todoriki

Takashi Saito

Osamu Kohno

Kenichi Koyama

Tetsuo Yamaguchi

Ko Agatsuma

Koh Agatsuma

A method for manufacturing a Nb.sub.3 Sn superconductor comprising the steps of preparing a composite conductor element which is composed of Cu-Sn alloy matrix and one or more Nb cores inserted and disposed in said matrix, if necessary sheathing the outer surface of the Cu-Sn alloy matrix with copper, subjecting the composite conductor element to a diameter reducing working until the predetermined diameter is reached, then forming an Sn-plating layer on the outer surface of the reduced diameter composite conductor element and thereafter subjecting the Sn-plated composite conductor element to diffusion heat treatment so that an intermetallic compound of Nb.sub.3 Sn is formed, and a method for manufacturing hollow superconducting magnet off an intermetallic compound type comprising the steps of extending a plurality of multicore superconductors together with thin tapes of a low temperature melting metal along grooves of a hollow conductor carrier, winding the superconductor assembly around a magnet reel and then heating up the superconducting magnet assembly to melt the thin tape of low temperature melting metal so that the multicore superconductors are secured to the hollow conductor carrier.

Method for manufacturing a Nb.sub.3 Sn superconductor and method for

A method for producing hollow superconducting cable comprises steps of providing grooves on the outer periphery of a hollow conductor adapted to be engageable therewithin fine multi-filamentary superconductors formed beforehand to be fitted into said grooves, and of fixing securely said multi-filamentary superconductors into said grooves by soldering with a metal having a low melting point.

Method for producing hollow superconducting cables

Growing community of inventors

Tanashi, Japan

Itaru Todoriki