Method for the manufacture of tubular conductors
AssigneeSiemens Aktiengesellschaft
InventorsHeinrich Diepers, Otto Schmidt
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Abstract
A method for manufacturing tubular conductors which consist of a niobium layer and a layer of normal electrically conducting metal in which a copper body of rectangular cross section is covered with niobium on one wide and two narrow sides by means of fusion electrolysis and the resulting body then rolled to form a ribbon which is then bent to form a tube with the niobium flanges at the two edges of the ribbon abuting and welded together by electron beam welding. Tubular conductors made according to the method of the present invention are particularly suited for use as superconducting cables.
Claims10
An improved method for manufacturing tubular conductors which consist of a niobium layer and a layer of normal conducting metal in which a ribbon consisting of the two layers and having its edges, niobium flanges is first fabricated, after which the ribbon is bent to form a tube so that the niobium flanges at both edges abut, which flanges are then joined together, wherein the improvement comprises the steps of:
- a. plating a copper body using fusion electrolysis to form a niobium layer on one wide and two narrow sides;
- and
- b. rolling the body so formed to obtain a ribbon to be used in making the tubular conductor.
Dependencies are inferred from the claim text.