| 摘要 |
Superconducting, oxidic ceramic materials are worked to filamentary conductors, in that they are filled into silver tubes (2), drawn with the latter to filamentary conductors and then sintered under flowing oxygen. So that such filamentary conductors can be produced industrially with an adequate quality, drawing speed and yield, the silver tube (2) as a sintered sleeve is brought into contact with the ceramic material (1) in a drawing sleeve (3), of soft annealed steel (35) and the resulting sleeve combination undergoes the drawing stages. After drawing the steel drawing sleeve is removed by etching. In a large number of drawing stages, it is necessary to remove the drawing sleeve which has become hard due to the cold working and to replace it by a new, soft annealed sleeve. Simultaneously the sintering sleeve can undergo soft annealing.
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