US 2022/0029084 A1Published application

Finished conductor arrangement for an nb3sn superconductor wire and method for producing a subelement for an nb3sn superconductor wire

AssigneeBruker EAS GmbH

InventorsMatheus WANIOR, Vital ABAECHERLI, Carl BUEHLER, Bernd SAILER, Klaus SCHLENGA, Manfred THOENER, Michael FIELD

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Abstract

For producing an Nb3Sn superconductor wire, restack rod process (RRP) subelements (1a; 60a) are grouped to form a bundle having an approximately circular cross section and are arranged together with filling elements (18a-18c) in an internally and externally round outer tube (19; 52). To the inside the filling elements form a serrated profile (25) for abutment against the hexagonal subelements, and to the outside they form a round profile (24) for direct or indirect abutment in the outer tube. In fabricating the RRP subelements, and before a reshaping with a reduction in cross section, an externally hexagonal and internally round casing structure (9) is provided, into which the remaining parts of the subelements are inserted, in particular, an annular arrangement of hexagonal Nb-containing rod elements (4), which are surrounded externally by an outer matrix (7, 61) and internally by an inner matrix (3).

Claims20

Dependent claims

A finished conductor arrangement for an Nb3Sn superconductor wire, comprising

a plurality of mutually abutting subelements each comprising Nb and Sn and each being configured hexagonally in external cross section, and
an outer structure which comprises Cu and which surrounds the mutually abutting subelements, the outer structure being configured to be round in external cross section,
where the subelements are each configured with
an Sn-containing core,
an inner matrix which comprises Cu and which surrounds the Sn-containing core,
a region of mutually abutting Nb-containing rod elements, which are each configured hexagonally in external cross section, more particularly where the Nb-containing rod elements are each configured with an Nb-containing core filament and a Cu-containing filament casing, and
an outer matrix which comprises Cu and surrounds the region of Nb-containing rod elements;
where the outer structure is configured with an outer tube which is configured to be round in radially external cross section and in radially internal cross section,
where between the outer tube and the mutually abutting subelements, one or more filling elements are arranged which on a radially outer side have a round profile for direct or indirect abutment against a radially inner side of the outer tube, and which radially to the inner side have a serrated profile for abutment against the mutually abutting subelements,
where the one or more filling elements abut the mutually abutting subelements on the outer side, and the outer tube abuts the radially outer, round profile of the one or more filling elements directly or indirectly, and
where an entirety of the filling elements, radially toward the inner side, form an approximately circular overall profile.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/492,920Filed 4 Oct 2021
Priority: DE 10 2019 204 926.55 Apr 2019
Published: 27 Jan 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H10N 60/0801
Of devices comprising copper oxide: manufacture or treatment of filaments or composite wires
H01F 6/06
Superconducting magnets; Superconducting coils: coils, e.g. winding, insulating, terminating or casing arrangements therefor
H10N 60/0184
Manufacture or treatment: of devices comprising intermetallic compounds of type A-15, e.g. Nb3Sn
H10N
Electric solid-state devices not otherwise provided for