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11. 发明专利

DE69219799T2 未知
公开(公告)号：DE69219799T2
公开(公告)日：1997-10-23
申请号：DE69219799
申请日：1992-02-06
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KIKUCHI HIROYUKI , MIMURA MASANAO , UNO NAOKI , TANAKA YASUZO
IPC分类号： H01L39/14 , H01L39/24
摘要： A multifilamentary oxide superconducting wire includes a metal matrix (20) and a plurality of flat oxide superconductor filaments (21) arranged in the metal matrix such that wide directions thereof are radially arranged in a section of the metal matrix (20). A method of manufacturing a multifilamentary oxide superconducting wire includes the steps of filling a raw material of an oxide superconductor in a through hole of a metal member having the through hole to form a composite billet, subjecting the composite billet to a diameter reduction process to form a composite wire having a fan-like section, arranging composite wires so that larger arcs of the composite wires are located on the outer side, thus forming form a composite wire arrangement, covering the composite wire arrangement with a metal member to form a metal-covered composite wire arrangement, and performing a predetermined heating process of the metal-covered composite wire arrangement, thus forming the raw material into an oxide superconductor.

12. 发明专利

DE69219799D1 未知
公开(公告)号：DE69219799D1
公开(公告)日：1997-06-26
申请号：DE69219799
申请日：1992-02-06
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KIKUCHI HIROYUKI , MIMURA MASANAO , UNO NAOKI , TANAKA YASUZO
IPC分类号： H01L39/14 , H01L39/24
摘要： A multifilamentary oxide superconducting wire includes a metal matrix (20) and a plurality of flat oxide superconductor filaments (21) arranged in the metal matrix such that wide directions thereof are radially arranged in a section of the metal matrix (20). A method of manufacturing a multifilamentary oxide superconducting wire includes the steps of filling a raw material of an oxide superconductor in a through hole of a metal member having the through hole to form a composite billet, subjecting the composite billet to a diameter reduction process to form a composite wire having a fan-like section, arranging composite wires so that larger arcs of the composite wires are located on the outer side, thus forming form a composite wire arrangement, covering the composite wire arrangement with a metal member to form a metal-covered composite wire arrangement, and performing a predetermined heating process of the metal-covered composite wire arrangement, thus forming the raw material into an oxide superconductor.

13. 发明专利

JPH05101722A MANUFACTURE OF MULTI-CONDUCTOR CERAMICS SUPERCONDUCTOR 失效
公开(公告)号：JPH05101722A
公开(公告)日：1993-04-23
申请号：JP26222591
申请日：1991-10-09
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KIKUCHI SUKEYUKI , MIMURA MASANAO , UNO NAOKI
IPC分类号： B21F19/00 , H01B12/10 , H01B13/00
摘要： PURPOSE:To obtain a long size multi-conductor ceramics supirconductor, which can be applied to a magnet or the like, by winding multiple compound sheets made of the ceramics raw material and a metal member spirally, and covering it with metal, and performing reduction processing and heat treatment. CONSTITUTION:Ceramics raw material as the raw material of a superconductor is filled in a metal pipe, and reduction processing is performed, and finally, rolling is performed to form a compound tape. Next, this tape wire material 3 or 4 is wound around of a metal pipe or a round bar 5 spirally so that they are not overlapped with each other and that a clearance is not generated, and it is inserted into the metal pipe again to form a compound billet. Reduction processing such as extracting, swaging, rolling is performed to the billet to obtain a multi-conductor ceramics superconductor. Since the superconductor is arranged spirally inside thereof and covered with metal, a break of a conductor part and disconnection of the whole is eliminated.

14. 发明专利

JPH0597410A PRODUCTION OF MULTILAYERED MULTI-CORE CERAMIC SUPERCONDUCTOR 失效
公开(公告)号：JPH0597410A
公开(公告)日：1993-04-20
申请号：JP26080391
申请日：1991-10-08
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KIKUCHI SUKEYUKI , MIMURA MASANAO , NEMOTO KIYOSHI , UNO NAOKI
IPC分类号： B28B1/00 , C01B13/32 , C01G1/00 , C01G29/00 , H01B12/10 , H01B13/00
摘要： PURPOSE:To produce a multilayered multi-core ceramic superconductor having high Ic characteristics and an excellent cross-sectional shape. CONSTITUTION:A combined body 6 consisting of powdery starting material for a ceramic superconductor and a metal is rolled down by repeating a first rolling process 7 in which rolling is carried out from opposite two directions while imparting flowability to the starting material and a second rolling process 8 in which rolling is carried out from opposite two directions perpendicular to the above-mentioned two directions while imparting flowability to the starting material. These processes 7, 8 are repeated at least once or more.

15. 发明专利

JPH0589729A MANUFACTURE OF HIGH STRENGTH CERAMIC SUPERCONDUCTIVE CONDUCTOR 失效
公开(公告)号：JPH0589729A
公开(公告)日：1993-04-09
申请号：JP27329491
申请日：1991-09-25
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KIKUCHI SUKEYUKI , MIMURA MASANAO , NEMOTO KIYOSHI
IPC分类号： B23K26/00 , B23K26/34 , H01B12/04 , H01B13/00
摘要： PURPOSE:To provide a method for easily manufacturing a high strength ceramic superconductive conductor excellent in superconductive characteristic. CONSTITUTION:On the Ag coat layer 3 of a ceramic superconductive conductor 1 having the structure of covering a ceramic superconductor layer 2 with Ag material, a metal powder 4 which is reacted with Ag to be alloyed is continuously placed in the longitudinal direction, and the Ag powder 4 placed on the Ag coat layer 3 is heated to form a longitudinally continued alloy band 7 in a determined circumferential position of the Ag coat layer 3. Since the Ag coat layer 3 of the ceramic superconductive conductor 1 is alloyed and strengthened continuously in the longitudinal direction, the breakage of the superconductor layer 2 by handling is prevented. Further, since alloying is conducted in the final process, the drawing of a composite billet is facilitated. Satisfactory quench resisting characteristic can be kept because of the local allaying of the Ag coat layer 3.

16. 发明专利

JPH0582330A MANUFACTURE OF OXIDE SERIES SUPERCONDUCTOR COIL 失效
公开(公告)号：JPH0582330A
公开(公告)日：1993-04-02
申请号：JP24147891
申请日：1991-09-20
申请人： FURUKAWA ELECTRIC CO LTD
发明人： UNO NAOKI , MIMURA MASANAO , TANAKA YASUZO
IPC分类号： H01F5/00 , H01F6/06 , H01F41/04
摘要： PURPOSE:To provide a method for manufacturing an oxide series superconductor coil having a dense oxide series superconductor and generating a high magnetic field. CONSTITUTION:An oxide series superconductor material is shaped in a spiral element 11 by using a doctor blade method, the element 11 is disposed on a ceramic board 10 having at least one through hole 13 in a green sheet state through silver 12, sintered to form a single layer coil, a plurality of single layer coils are so laminated that the directions of vortexes are alternately different, and the elements of the respective layers are superconductively connected via the holes 13.

17. 发明专利

JPH04337213A MANUFACTURE OF MULTI-LAYER CERAMIC SUPERCONDUCTOR 失效
公开(公告)号：JPH04337213A
公开(公告)日：1992-11-25
申请号：JP13868391
申请日：1991-05-15
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KIKUCHI SUKEYUKI , NEMOTO KIYOSHI , MIMURA MASANAO
IPC分类号： C04B35/00 , C01G1/00 , C04B35/45 , H01B12/02 , H01B12/06 , H01B13/00
摘要： PURPOSE:To manufacture a wiry multi-core multi-layer ceramic superconductor with excellent superconductor characteristic, particularly high critical current density, by applying the cross section reduction machining for each layer of a composite tape on a metal core material. CONSTITUTION:Butt sections of both edge sections of a composite tape with the width about 32mm are seam-welded on a round bar made of Ag with the outer diameter 4mm, for example, to form a composite body. This composite body is heated for a preset period at the preset temperature in the atmosphere, and swage machining is applied by roll machining to reduce the cross section until the outer diameter of the composite body becomes 10mm, for example. This process is repeated multiple times, and the outer diameter of the composite body is made 5mm, for example, by the final swaging machining. The heat treatment under the same condition is then applied to obtain a ceramic superconductor with eight-layer ceramic superconductor layer, for example. A wiry multi-core multi-layer ceramic superconductor with more excellent superconductor characteristic, particularly high critical current density, as compared with the multi-core multi-layer ceramic superconductor manufactured in the conventional method is manufactured.

18. 发明专利

JPH04315703A OXIDE SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPH04315703A
公开(公告)日：1992-11-06
申请号：JP10831191
申请日：1991-04-15
申请人： FURUKAWA ELECTRIC CO LTD
发明人： TANAKA YASUZO , KIKUCHI SUKEYUKI , MIMURA MASANAO , YAMADA KIYOSHI
IPC分类号： H01B12/04 , H01B12/10 , H01B13/00
摘要： PURPOSE:To improve wire rod processing performance and realize a long size wire rod by providing a silver sheath in a part in contact with an oxide superconductor raw material powder body, a diffusion layer of chromium or a chromium alloy thereon, and a copper sheath further thereon. CONSTITUTION:One or a plurality of wire-like oxide superconductors 2 are tightly surrounded at the circumference thereof respectively by a silver sheath 1 so as to maintain excellent crystal orientation of the superconductor 2 and to supply oxygen required at the time of sintering from an adjacent silver oxide to sinter raw material powder under a reduced pressure state. On a compound material of the superconductor 2 and the silver sheath 1, as a diffusion barrier layer 3 for preventing diffusion of a raw powder component a chromium or chromium alloy layer and thereon a copper layer as a copper sheath 5 are formed. Accordingly, the superconductor 2 is uniformly processed in the lengthwise direction in a wire drawing and rolling processes to ensure crystal orientation and therefore critical current density is not varied in the lengthwise direction so as to eliminate a risk of wire breaking and improve wire rod processing performance.

19. 发明专利

JPH04269407A MANUFACTURE OF CERAMIC SUPERCONDUCTIVE CONDUCTOR 失效
公开(公告)号：JPH04269407A
公开(公告)日：1992-09-25
申请号：JP5335191
申请日：1991-02-25
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KIKUCHI SUKEYUKI , MIMURA MASANAO , NEMOTO KIYOSHI , UNO NAOKI
IPC分类号： B21F19/00 , C01G1/00 , C04B35/00 , C04B35/45 , H01B12/04 , H01B12/10 , H01B13/00
摘要： PURPOSE:To provide manufacture of a ceramic superconductive conductor in a shape usable for a magnet and a cable and moreover excellent in superconductive characteristic. CONSTITUTION:A complex 3 consisting of a ceramics raw material 1 to servo as a superconductor and a metal 2 is subjected to press processing while its optional length is restrained to become a desired width, and this processing is progressively performed along the length direction of the complex 3 followed by performing heat treatment of the same complex 3 in order to make aforesaid ceramic raw material 1 a superconductor.

20. 发明专利

JPH04249812A MANUFACTURE OF TAPE-SHAPED CERAMIC SUPERCONDUCTING WIRE ROD 失效
公开(公告)号：JPH04249812A
公开(公告)日：1992-09-04
申请号：JP1145291
申请日：1991-01-08
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KIKUCHI SUKEYUKI , MIMURA MASANAO , NEMOTO KIYOSHI
IPC分类号： B21F19/00 , H01B12/04 , H01B13/00
摘要： PURPOSE:To eliminate expansion defect and to improve super-conductivity by filling raw material substance of a superconductor in a metal pipe and repeating, more than twice, a heating process below the melting point of the raw material substance and a rolling process. CONSTITUTION:Raw material substance of a ceramic superconductor is filled in a metallic pipe to form a composite raw material. This raw material is subjected to heat treatment below a melting point of the raw materials in a temperature range higher than 800 deg.C and rolling process more than twice in repetition. By repeating the heating and rolling processes, gas is released sufficiently and expansion can be prevented.

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