Method of manufacturing a sheathed twisted superconductor having a high critical temperature
AssigneeAlcatel Alsthom Compagnie Generale d'Electricite
InventorsGerard Duperray, Erick Beghin, Denis Legat, Peter Friedrich Herrmann
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Abstract
A sheathed twisted superconductor with a high critical temperature is made from a billet obtained by assembling square cross-section single strands in a square cross-section metal tube. The multistrand obtained by drawing the billet through a roller die is twisted with a particular lay and rolled using rollers the diameter of which is much greater than the twist lay. The sheathed twisted superconductor obtained by this method is intended for variable current applications.
Claims7
A method of manufacturing a sheathed twisted superconductor having a high critical temperature, comprising the following steps:
- square cross-section single strands are assembled in a square cross-section metal tube to produce a square cross-section billet,
- said billet is drawn through a die to obtain a square cross-section multistrand,
- said multistrand is twisted with a particular lay, and
- said twisted multistrand is rolled to the required dimensions of said sheathed twisted superconductor.
Dependencies are inferred from the claim text.