B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 13/02 (2006.01) B22D 21/00 (2006.01) B28B 21/30 (2006.01) C04B 35/45 (2006.01) C04B 35/653 (2006.01) H01B 12/12 (2006.01) H01L 39/08 (2006.01) H01L 39/24 (2006.01)
Patent
CA 2043483
To produce tubular molded parts made of high-temperature superconductor material based on oxides of bismuth, calcium, strontium and copper, a homogeneous melt of the oxide mixture with a specified stoichiometry is allowed to run at temperatures of 900 to 1100°C into a casting zone rotating about its horizontal axis. The solidified molded part is removed from the casting zone and it is annealed for 4 to 150 hours at 700 to 900°C in an oxygen- containing atmosphere. A plant for producing tubular molded parts comprises a rotatably arranged mold (4, 9) which is provided at least at one end face with a front plate 6 which reduces its free cross section, a runner 7 extending into the interior of the mold (4, 9) and a crucible 8 arranged above the runner 7 which is capable of feeding the runner 7 with melt (cf. Fig. 2A).
Bock Joachim
Dorn Friedrich-Wilhelm
Holzem Johannes
Preisler Eberhard
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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