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41. 发明专利

JP2000199042A PRODUCTION OF Cu-Ag ALLOY WIRE ROD AND Cu-Ag ALLOY WIRE ROD 失效
公开(公告)号：JP2000199042A
公开(公告)日：2000-07-18
申请号：JP19343499
申请日：1999-07-07
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： MORIYASU TAKESHI , TANAKA AKIRA , HIROTA TORU , KUMANO TOMOYUKI , OGAKI TOSHIHISA
IPC分类号： H01B1/02 , C22C9/00 , C22F1/00 , C22F1/08 , H01B13/00
摘要： PROBLEM TO BE SOLVED: To produce a Cu-Ag alloy wire rod having extremely high strength and high electric conductivity with high workability and to obtain a Cu-Ag alloy having high strength in the low amt. of Ag to be added. SOLUTION: A cast rod of a Cu base alloy contg. 2 to 14 wt.% Ag, and the balance Cu and inevitable impurities is subjected to cold working for reduction, in the process of this cold working, heat treatment is executed for one or more times, and, after the final heat treatment, cold working is executed to a final wire diameter at >=90% reduction of area. Moreover, if required, by controlling the higher reduction of area, extremely high strength can be obtd.

42. 发明专利

JP2000068567A CONDUCTION COOLING PERPETUAL CURRENT SWITCH 失效
公开(公告)号：JP2000068567A
公开(公告)日：2000-03-03
申请号：JP23618598
申请日：1998-08-24
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： HASHIGUCHI HIROSHI , MIYAKE SEIICHI , KUMANO TOMOYUKI , AOKI NOBUO
IPC分类号： H01L39/20
摘要： PROBLEM TO BE SOLVED: To well cool an entire of a superconductive wiring of a perpetual current switch by heat conduction by connecting a spool by a single material of a perpetual current switch to a cooling source. SOLUTION: A perpetual current switch 6 is constituted of a spool 1, a superconductive wire 2, an inner insulation layer 3, a heater wire 4 and an outer insulation layer 5. The spool 1 is fixed in contact with an extremely low temperature cooling stage 7 which is cooled by a freezer in an outside to enable heat conduction and is fixed by a metal part 8. The perpetual current switch 6 is fixed in contact with the extremely low temperature cooling stage 7 formed of a metallic member of good heat conductivity to enable heat conduction and the extremely low temperature cooling stage 7 is connected to an extremely low temperature cooling head of a compact freezer and is cooled down to a temperature in the neighborhood of 4K. Therefore, since a superconductive wiring part is cooled well by improving heat conduction characteristic of a spool and a wiring is subjected to uniform temperature rise and cooling, OFF operation is possible by little heat input to a heater, thus reducing cooling load of a freezer.

43. 发明专利

JPH07169346A MANUFACTURE OF NB3SN SUPERCONDUCTING WIRE FOR ALTERNATING CURRENT 失效
公开(公告)号：JPH07169346A
公开(公告)日：1995-07-04
申请号：JP31863093
申请日：1993-12-17
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： SUZUKI HIDEMOTO , ICHIHARA MASAMITSU , AOKI NOBUO , KUMANO TOMOYUKI , ODA YUICHIRO , NOGUCHI ICHIRO
IPC分类号： B21C1/00 , C22F1/00 , H01B12/10 , H01B13/00
摘要： PURPOSE:To manufacture a Nb3Sn superconducting wire for alternating current with extra fine multi-structure. CONSTITUTION:A Cu-covered Sn rod is accommodated in a Ti-added Nb alloy tube, outside which a Cu-Ni alloy tube is arranged, then cold working is conducted to manufacture a single wire with a hexagonal cross section. The specified number of the single wires are arranged so as to come in contact with side surfaces each other around a plurality of Cu-Ni allay spacers with the same cross section as the single wire, and filled in a Cu-Ni alloy tube, then cold working is conducted to manufacture a primary multi-wire. The specified numbers of the primary multi-wires are formed in double stack structure in the same process as the primary multi-wire, then isostatic extrusion working and wire drawing working are conducted to manufacture a secondary multi-wire. The limit of the working is 1mum or less in the diameter of a filament.

44. 发明专利

JPH05334929A 失效
公开(公告)号：JPH05334929A
公开(公告)日：1993-12-17
申请号：JP13860392
申请日：1992-05-29
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： ICHIHARA MASAMITSU , AOKI NOBUO , KUMANO TOMOYUKI , NOGUCHI ICHIRO , HAKAMATA SHINJI , SHIGA NORIYUKI , YAMAZAKI TAKAYUKI
IPC分类号： C22F1/00 , H01B12/10 , H01B13/00
摘要： PURPOSE:To manufacture a superconductive wire of multiple core structure by a niobium-tube method. CONSTITUTION:An Sn wire 2 is located in the center of a Cu matrix 1 with numerous composite filaments 3 arranged therearound, where the Cu matrix 1 is covered with a Ta tube 4 and a Cu tube 5, thus obtaining a composite. The composite filament 3 is composed of an Sn filament 3a in the center thereof and a Cu tube 3b and an Nb tube 3c in order outside of the filament 3a. An Sn concentration when the Cu matrix 1 and the Sn wire 2 are completely diffused is 30wt.% or more, or that when the Sn filament 3a and the Cu tube 3b are utterly diffused is 20wt.% or less. Application of a heat treatment to the composite can cause the Nb tube 3c to act with Sn inside and outside so as to produce Nb3Sn.

45. 发明专利

JPH04346207A DEVICE FOR MONITORING SUPERCONDUCTIVE COIL FOR AC 失效
公开(公告)号：JPH04346207A
公开(公告)日：1992-12-02
申请号：JP11870391
申请日：1991-05-23
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： KASAHARA TOSHIO , KUMANO TOMOYUKI , UCHIYAMA TAKESHI
IPC分类号： G01R5/00 , G01R31/02 , H01F6/00 , H01F6/06
摘要： PURPOSE:To enable an AC loss and an operation state of a superconductive coil to be monitored stably. CONSTITUTION:A superconductive coil 12 is formed by a compound cable 11 where a plurality of superconductive element wires 11a and a plurality of insulation film conductors are twisted, a superconductive element wire and an insulation film conductor are connected at one edge side of the coil, and at the same time a detector 14 is connected through an amplifier 13, thus enabling a space between the superconductive element wire and a measurement wire to be eliminated and preventing increase in noise.

46. 发明专利

JPH04277416A MANUFACTURE OF NB3SN SUPERCONDUCTING WIRE 失效
公开(公告)号：JPH04277416A
公开(公告)日：1992-10-02
申请号：JP3855991
申请日：1991-03-05
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： SUZUKI HIDEMOTO , ICHIHARA MASAMITSU , AOKI NOBUO , KUMANO TOMOYUKI , NORO HARUTO , NOGUCHI ICHIRO , KAWAKAMI MASARU , HAKAMATA SHINJI , ENDO HIDEYUKI , SHIGA NORIYUKI
IPC分类号： B21F19/00 , C22F1/00 , H01B12/10 , H01B13/00
摘要： PURPOSE:To provide a superconducting wire having high residual resistance ratio and high critical current density by using a niobium-tube method. CONSTITUTION:A Ta-claded Nb alloy tube is produced by hydrostatic extrusion and roll forming, and subsequently a Cu-claded Sn rod is accommodated in this clad tube while a Cu tube is arranged outside followed by being produced in a composite wire through a drawing process. After a large number of this composite wires are filled in the Cu tube, hydrostatic extrusion process, pulling process, and continuous wire drawing are performed so that they are formed into wire rods of 0.9mm in outside diameter, followed by application of a heat- treatment at 720 deg.C for 20 hours. This Nb3Sn superconducting wire of multi-core structure has critical current density of 830A/mm at 15T and RRR value of 100.

47. 发明专利

JPH03274612A MANUFACTURE OF NB3 SN SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPH03274612A
公开(公告)日：1991-12-05
申请号：JP7462090
申请日：1990-03-23
申请人： JAPAN ATOMIC ENERGY RES INST , SHOWA ELECTRIC WIRE & CABLE CO
发明人： ANDO TOSHINARI , NISHI MASATAKA , SHIMAMOTO SUSUMU , TAKAHASHI YOSHIKAZU , SUZUKI HIDEMOTO , ICHIHARA MASAMITSU , OGAKI TOSHIHISA , KUMANO TOMOYUKI , NOGUCHI ICHIRO , AOKI NOBUO
IPC分类号： C22F1/00 , H01B12/10 , H01B13/00
摘要： PURPOSE:To enable uniform deformation of an Nb group metal tube and improve its characteristic such as critical current density by arranging a copper alloy having big mechanical strength between the Nb group metal tube and a tin group metal in a central part. CONSTITUTION:A plurality of Nb group metal tubes are arranged in a copper or copper alloy matrix, and area reduction processing is applied to a complex body housing a tin group metal wire coated with a copper alloy having big mechanical strength inside said metal tube followed by heat treatment. An Nb radical alloy, to which pure Nb and Ti for improving workability, is used as the material of the Nb group metal tube to be arranged in the matrix. Heat treatment after area reduction is applied within a temperature range from 550 to 755 deg.C. As a copper alloy having big mechanical strength, Ti alloy including (0.1 to 2.0)wt.% of Cu, Sn alloy including (0.1 to 10)wt.% of Cu and Ni alloy including (1.0 to 40)wt. of Cu are used.

48. 发明专利

JPH02250904A MANUFACTURE OF NB3AL ELECTRIC SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPH02250904A
公开(公告)日：1990-10-08
申请号：JP7335989
申请日：1989-03-24
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： SUZUKI HIDEMOTO , ICHIHARA MASAMITSU , KAMISADA YOSHIMASA , AOKI NOBUO , KUMANO TOMOYUKI , NOGUCHI ICHIRO , NORO HARUTO , KAWAKAMI MASARU
IPC分类号： B22F3/14 , C22C1/04 , C22C27/02 , C22F1/00 , H01B12/00 , H01B13/00
摘要： PURPOSE:To manufacture an Nb3Al electric superconductive wire having excellent workability and electric superconductive characteristic with powder method by packing powder of Al-Ge series alloy, etc., and Nb powder into a metal pipe at the necessary quantity, working to shrink the diameter and executing heat treatment to generate Nb3Al. CONSTITUTION:The powder composed of one or more kinds among Al-Ge series alloy, Al-Si series alloy and Al-Ge-Si series alloy and Nb powder, are packed into the metal pipe at the necessary quantity. After working to shrink the diameter of this metal pipe, the heat treatment is executed to generate Nb3Al. Further, blending ratios of Ge and Si in the alloy powder are made to 0.5-30at.% Ge, 0.1-30at.% Si and 0.1-30at.% Ge+Si, and it is ordinarily preferable to rapidly cool to make eutectic structure fine at the time of manufacturing the powder of Al alloy. By this method, the electric superconductive characteristic is improved and the Al electric superconductive wire improving the workability is easily obtd.

49. 发明专利

JPH02148620A MANUFACTURE OF NB3AL SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPH02148620A
公开(公告)日：1990-06-07
申请号：JP30261088
申请日：1988-11-30
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： SUZUKI HIDEMOTO , ICHIHARA MASAMITSU , KAMISADA YOSHIMASA , AOKI NOBUO , KUMANO TOMOYUKI , NOGUCHI ICHIRO , NORO HARUTO , KAWAKAMI MASARU , OGAKI TOSHIHISA , WADA YUKIHIKO
IPC分类号： H01B12/12 , H01B13/00
摘要： PURPOSE:To achieve an improvement in superconductive characteristics by addition of a third element by using an Al or Al alloy sheet having a number of through parts and a Nb or Nb-based alloy sheet. CONSTITUTION:On the outside of a reinforcing member, a Nb or Nb based alloy sheet and an Al or Al alloy sheet having a number of through parts are wound in lamination, and metal pipes are disposed on the outside of the wound layer, and regressive work and then heat treatment for Nb3Al formation are conducted. Those in which the Al preliminarily containing a third element is worked into a sheet form can be used as Al alloy sheet, and also a Nb based alloy sheet to which the third element is added can be used. As the third element, Ge and Si are preferred. The thickness of the Al or Al alloy sheet is preferably within the range 0.1-2 times the thickness of the Nb or Nb based alloy sheet. Hence, a Nb3Al superconductive wire having the third element added thereto for the improvement in superconductive characteristics and workability can easily be manufactured.

50. 发明专利

JPH0240809A MANUFACTURE OF NB3SN MULTIFIBER SUPERCONDUCTING WIRE 失效
公开(公告)号：JPH0240809A
公开(公告)日：1990-02-09
申请号：JP19094588
申请日：1988-07-29
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： SUZUKI HIDEMOTO , ICHIHARA MASAMITSU , KAMISADA YOSHIMASA , AOKI NOBUO , KUMANO TOMOYUKI , NOGUCHI ICHIRO
IPC分类号： B21C1/00 , H01B13/00
摘要： PURPOSE:To make it possible to process into a small wire and to obtain an excellent superconductive property by installing an Sn rod with a coverage inside an Nb tube, accomodating it in a Cu tube with the outside formed in a regular hexagon to make a composite, and after accomodating plural composites in a Cu tube contacting them side by side, applying a section reduction process and a heat treatment. CONSTITUTION:A composite 1 is composed by covering around an Sn rod 20 of a circular section with a cylindrical oxygenless copper tube 3 and an Nb tube 4, and installing those members in an oxygenless copper tube 5 with the outer diameter of a regular hexagon and with the inner diameter of a semicircular hollow. Then, numerous composites 1 are filled densely in an oxygenless copper tube 5 contacting side by side. After manufacturing a wire material by applying a static hydraulic extrusion process, a swaging process, and a cold wiredrawing process to the resultant composition obtained in such a way, a heat treatment producing Nb3Sn is applied to manufacture a multicore superconductive wire. As a result, since an abnormal deformation, or an uneven deformation, in the manufacturing process can be prevented, no breaking of the Nb tube is generated even though it is made in a small wire, and the superconductive property can be improved accordingly.

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