公开(公告)号：US20230377775A1

公开(公告)日：2023-11-23

申请号：US18247891

申请日：2021-09-29

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Masahiro SUGIMOTO ,  Kota KATAYAMA ,  Hideki II ,  Tomoya KATO

IPC: H01B12/10 ,  H10N60/85 ,  H10N60/01

CPC classification number: H01B12/10 ,  H10N60/85 ,  H10N60/0128

Abstract: A NbTi superconducting multicore wire includes a core portion and a first barrier layer arranged around the core portion and composed of a first copper alloy including at least one element selected from Ni or Mn. A filament assembly arranged around the first barrier layer includes NbTi filament assemblies each including at least seven NbTi filaments, embedded in a matrix of a second copper alloy including at least one element selected from Ni or Mn. A second barrier layer is arranged around the filament assembly and composed of the first copper alloy, and a stabilizing layer arranged around the second barrier layer and composed of metal. The NbTi filaments are arranged in circular shapes each having a different diameter, centering on one NbTi filament, and NbTi filaments arranged in a circular shape in an outermost circle being arranged at approximately equal intervals along a circumferential direction.

公开(公告)号：US20220115168A1

公开(公告)日：2022-04-14

申请号：US17280718

申请日：2019-09-20

Applicant: FURUKAWA ELECTRIC CO., LTD. ,  TOHOKU UNIVERSITY ,  TOKAI UNIVERSITY EDUCATIONAL SYSTEM

Inventor： Masahiro SUGIMOTO ,  Hirokazu TSUBOUCHI ,  Daisuke ASAMI ,  Hideki II ,  Satoshi AWAJI ,  Hidetoshi OGURO

IPC: H01B12/08 ,  H01F6/06 ,  C22C9/00 ,  C22C9/02

Abstract: The present invention provides: a compound superconducting twisted wire in which non-adhesiveness between compound superconducting strands or separation easiness after adhesion is improved while a strength against tension is improved to a degree to be equivalent to or stronger than that of a conventional compound superconducting twisted wire; and a rewinding method thereof. The compound superconducting twisted wire 1 of the present invention includes a plurality of compound superconducting strands 10 being twisted to form a twisted structure, in which each of the compound superconducting strands 10 includes a compound superconductor part 11, a reinforcing part 12 and a stabilizing part 13, in which the compound superconductor part 11 includes a plurality of compound superconducting filaments 15 and a first matrix 16, the compound superconducting filaments 15 each including a compound superconducting phase, in which the reinforcing part 12 is disposed on an outer circumferential side of the compound superconductor part, and comprises a plurality of reinforcing filaments 18 and a second matrix 19, in which the stabilizing part 13 is disposed on at least one side of an inner circumferential side and an outer circumferential side of the reinforcing part. In the compound superconducting twisted wire, a volume ratio of the reinforcing part relative to the compound superconducting strand is larger than a volume ratio of the compound superconductor part relative to the compound superconducting strand, or a metal layer 20 with a thickness of 2 μm or less is formed on a surface of the compound superconducting strand for preventing thermal fusion between the compound superconducting strands.

公开(公告)号：US20230016999A1

公开(公告)日：2023-01-19

申请号：US17782512

申请日：2020-12-04

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Daisuke ASAMI ,  Kota KATAYAMA ,  Masahiro SUGIMOTO ,  Hideki II ,  Hisaki SAKAMOTO ,  Tomoya KATO

IPC: H01L39/24 ,  H01B12/04 ,  H01B12/10

Abstract: A precursor for Nb3Sn single-core superconducting wire includes a Sn-based wire rod, a first Cu-based tube covering an outer circumferential surface of the Sn-based wire rod, an Nb-based tube covering an outer surface of the first Cu-based tube, and a second Cu-based tube covering an outer surface of the Nb-based tube. The Sn-based wire rod contains a matrix phase and at least one kind of hard phases that is harder than the matrix phase. In a cross section parallel to a longitudinal direction of the precursor for Nb3Sn single-core superconducting wire, a maximum dimension of the hard phases in a width direction perpendicular to the longitudinal direction is 50% or less of a minimum dimension in the width direction of the Sn-based wire rod and/or is equal to or smaller than a minimum thickness in the width direction of the Nb-based tube.

公开(公告)号：US20220230777A1

公开(公告)日：2022-07-21

申请号：US17615236

申请日：2020-05-29

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Hiroyuki FUKUSHIMA ,  Yonghoon KIM ,  Hideki II ,  Takumi SATO ,  Hirokazu TSUBOUCHI ,  Masahiro SUGIMOTO

IPC: H01B3/30 ,  H01B1/02

Abstract: A resin coated superconducting wire includes a matrix resin including a synthetic resin material, and a superconducting wire in the matrix resin. In a transverse cross section of the resin coated superconducting wire, a cross section area of the matrix resin is equal to or larger than the cross section area of the superconducting wire.

公开(公告)号：US20240249866A1

公开(公告)日：2024-07-25

申请号：US18564086

申请日：2022-05-24

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Yonghoon KIM ,  Hideki II ,  Takumi SATO

IPC: H01F6/06 ,  H01B7/02 ,  H01B12/04 ,  H01F5/06 ,  H01F6/02

CPC classification number: H01F6/06 ,  H01B12/04 ,  H01F5/06 ,  H01F6/02 ,  H01B7/02

Abstract: The superconducting rectangular wire for a superconducting coil, comprises: an NbTi-based or Nb3Sn-based wire having a surface coated with a copper-based material; and a fusible resin layer including a thermoplastic fusible resin and coating an outer peripheral surface of the wire, in which in a cross section of the superconducting rectangular wire for a superconducting coil, a radius of curvature (R2) of a corner portion of the fusible resin layer is equal to or less than a radius of curvature (R1) of a corner portion of the wire.

公开(公告)号：US20220406504A1

公开(公告)日：2022-12-22

申请号：US17777563

申请日：2020-11-18

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Yonghoon KIM ,  Hideki II ,  Takumi SATO ,  Daisuke ASAMI ,  Masahiro SUGIMOTO ,  Hirokazu TSUBOUCHI

IPC: H01F6/06 ,  H01F41/04

Abstract: The superconducting coil includes: a winding frame; and at least two superconducting rectangular wire layers provided in such a manner that a superconducting rectangular wire is spirally wound on an outer surface of the frame such that wires adjacent to each other in an axial direction of the frame are arranged side by side and separated, the wire including an NbTi-based or Nb3Sn-based wire having a surface coated with copper or copper alloy, in which at least a thermoplastic fusible resin is provided in a separated section between the adjacent wires, and when viewed in a cross section including an axis of the frame, at least one of voids that are partitionable on outer surfaces of a total of three wires and a total of four wires located on the two adjacent layers and adjacent to each other are 4% or less in terms of a void ratio (V1).

公开(公告)号：US20220005632A1

公开(公告)日：2022-01-06

申请号：US17280666

申请日：2019-09-20

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Masahiro SUGIMOTO ,  Hirokazu TSUBOUCHI ,  Kota KATAYAMA ,  Hideki II

IPC: H01B12/10 ,  H01B12/14 ,  H01F6/06 ,  H01F41/04

Abstract: An insulation-coated compound superconducting wire includes a compound superconducting wire having a compound superconducting part which includes a first matrix and a plurality of compound superconducting filaments containing compound superconducting phases, a reinforcing part disposed on the outer circumferential side of the compound superconducting part and includes a plurality of reinforced filaments, a second matrix and a second stabilizing material. A stabilizing part is disposed on at least one side among the inner circumferential side and the outer circumferential side of the reinforcing part. An electrical insulation part covers the outer circumferential surface of the compound superconducting wire, in which the insulation-coated compound superconducting wire has a critical current value (Ic) larger than that of the compound superconducting wire before being covered with the electrical insulation part.