Method and device for producing a superconductive conductor

Patent metadata

Field	Value
Publication number	US-11328841-B2
Application number	US-201615752224-A
Country	US
Kind code	B2
Filing date	Aug 10, 2016
Priority date	Aug 12, 2015
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

Methods and devices for producing a superconductive conductor are disclosed. The method includes providing a plurality of conductive strips by means of a strip provision device, applying liquid soldering agent onto the plurality of conductive strips, stacking the conductive strips wetted with soldering agent, and forming a superconductive body by machining the strip stack.

First claim

The invention claimed is:

1. A method for producing a superconductive conductor, the method comprising:
providing a plurality of conductive strips, wherein the plurality of conductive strips comprises at least one superconductive strip;
applying liquid soldering agent onto the plurality of conductive strips by immersing the conductive strips into a soldering bath;
forming a strip stack by stacking the conductive strips wetted with soldering agent in the soldering bath; and
forming a superconductive body by machining the strip stack with a roll system,
wherein the soldering bath has an input with a plurality of individual comb-like arranged inputs for the plurality of conductive strips, a passage for stacking the plurality of conductive strips, and an output.

2. The method according to claim 1 , wherein
providing a plurality of conductive strips comprises providing a plurality of first conductive strips, each having a first width, and a plurality of second conductive strips, each having a second width, wherein the first width differs from the second width, and wherein
stacking the conductive strips wetted with soldering agent comprises forming the first and second conductive strips into a strip stack with a cruciform cross-sectional shape.

3. The method according to claim 2 , wherein, before applying liquid soldering agent, the method comprises:
cleaning of the plurality of conductive strips and/or
applying flux melting agent onto the plurality of conductive strips with a soldering preparation device.

4. The method according to claim 2 , wherein the soldering agent is in a liquid state when the superconductive body is formed by machining the strip stack.

5. The method according to claim 2 wherein machining the strip stack comprises twisting of the strip stack.

6. The method according to claim 2 , further comprising the step of:
inserting the superconductive body into a cladding tube.

7. The method according to claim 6 , wherein before inserting the superconductive body into the cladding tube the superconductive body is wrapped with one or more of solder, a metal wire, a steel strip, and an insulating material.

8. The method according to claim 6 , wherein before inserting the superconductive body into the cladding tube the superconductive body is wrapped with solder and subsequently the superconductive body and/or the cladding tube is heated at least to the melting temperature of the solder to mechanically and/or electrically connect the superconductive body with the cladding tube.

9. The method according to claim 6 , further comprising the step of:
compacting the cladding tube filled with the superconductive body.

10. The method according to claim 1 , wherein, before applying liquid soldering agent, the method comprises:
cleaning of the plurality of conductive strips and/or
applying flux melting agent onto the plurality of conductive strips with a soldering preparation device.

11. The method according to claim 1 , wherein the soldering agent is in a liquid state when the superconductive body is formed by machining the strip stack.

12. The method according to claim 1 wherein machining the strip stack comprises twisting of the strip stack.

13. The method according to claim 1 , further comprising the step of:
inserting the superconductive body into a cladding tube.

14. The method according to claim 13 , wherein before inserting the superconductive body into the cladding tube the superconductive body is wrapped with one or more of solder, a metal wire, a steel strip, and an insulating material.

15. The method according to claim 13 , wherein before inserting the superconductive body into the cladding tube the superconductive body is wrapped with solder and subsequently the superconductive body and/or the cladding tube is heated at least to the melting temperature of the solder to mechanically and/or electrically connect the superconductive body with the cladding tube.

16. The method according to claim 13 , further comprising the step of:
compacting the cladding tube filled with the superconductive body.

17. A method for producing a superconductive conductor, the method comprising:
providing a plurality of conductive strips, wherein the plurality of conductive strips comprises at least one superconductive strip;
applying liquid soldering agent onto the plurality of conductive strips by immersing the conductive strips into a soldering bath;
forming a strip stack by stacking the conductive strips wetted with soldering agent in the soldering bath; and
forming a superconductive body by machining the strip stack with a roll system,
wherein providing a plurality of conductive strips comprises providing a plurality of first conductive strips, each having a first width, and a plurality of second conductive strips, each having a second width, wherein the first width differs from the second width, and
wherein stacking the conductive strips wetted with soldering agent comprises forming the first and second conductive strips into a strip stack with a cruciform cross-sectional shape.

Assignees

• Karlsruher Inst Technologie

Inventors

• Fietz Walter
• Wolf Michael J
• Heller Reinhard
• Weiss Klaus-Peter

Classifications

• H01B12/06 Primary

  Films or wires on bases or cores · CPC title

• H01F6/06

  Coils, e.g. winding, insulating, terminating or casing arrangements therefor · CPC title

• B23K1/19

  taking account of the properties of the materials to be soldered · CPC title

• H01B13/008

  for manufacturing extensible conductors or cables · CPC title

• H01L39/143

  Electricity · mapped topic