公开(公告)号：JPH08251786A

公开(公告)日：1996-09-27

申请号：JP5249595

申请日：1995-03-13

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： NISHIKAWA TAICHIRO ,  MIYAZAKI TAKESHI

IPC: H02G7/16

Abstract: PURPOSE: To provide a snow-thawing magnetic ring for a power transmission line capable of obtaining heat generated from an iron loss required for snow- thawing even from low magnetic field and also capable of sufficiently preventing snow accretion. CONSTITUTION: This is a cylindrical ring having predetermined thickness and length and comprises two pieces 10a and 10b divided along the axial direction of the cylindrical shape. And butted surfaces 11a and 11b between the two divided pieces 10a and 10b created by this equal division of the ring contain two intersecting lines 5a and 5b respectively between an equally dividing plane 3 including a central axis 2 of the cylindrical shape and an inner peripheral surface 4 and are the surfaces coinciding with the surfaces extending in the opposite direction respectively from the intersecting lines 5a and 5b among two tangential planes with the cylindrical inner peripheral surface 4 at the two intersecting lines 5a and 5b.

公开(公告)号：JPH11335784A

公开(公告)日：1999-12-07

申请号：JP14424598

申请日：1998-05-26

Applicant: SUMITOMO ELECTRIC INDUSTRIES ,  DAIDO STEEL CO LTD

Inventor： NISHIKAWA TAICHIRO ,  MIYAZAKI TAKESHI ,  WATABE KENJI ,  YAHAGI SHINICHIRO

IPC: C22C38/00 ,  C22C38/10 ,  C22C38/58

Abstract: PROBLEM TO BE SOLVED: To provide a high strength, low thermal expansion alloy wire having tensile strength of >=150 kgf/mm , excellent twisting property and low thermal expansion coefficient. SOLUTION: The objective alloy wire comprises, by weight ratio, 0.1-0.50% C, 26-48% Ni, 5.0-20% Co and 0.5-10% Al, the remainder being Fe with inevitable impurities. Further, the alloy wire contains, by weight, 0.05-5.0% of at least one selected from the group consisting of Mo, Nb, W, Ti, V and B and 0.02-2.0% of at least one selected from the group consisting of Si, Mn, Cr, Cu and Mg, and preferably satisfies the inequality 25

公开(公告)号：JPH09316603A

公开(公告)日：1997-12-09

申请号：JP13535996

申请日：1996-05-29

Applicant: SUMITOMO ELECTRIC INDUSTRIES ,  DAIDO STEEL CO LTD

Inventor： NISHIKAWA TAICHIRO ,  MIYAZAKI TAKESHI ,  SAITOU TAKANOBU ,  YAHAGI SHINICHIRO

IPC: C22C38/00 ,  C22C38/12 ,  C22C38/52

Abstract: PROBLEM TO BE SOLVED: To produce a high strength and low thermal expansion alloy high in strength, having >=150kgf/mm tensile strength, furthermore excellent in twistability and having a low thermal expansion coefficient as well. SOLUTION: This high strength and low thermal expansion alloy has a compsn. contg., by weight, 32 to 45% Ni, 0.35 to 0.50% C, 0.5 to 3.0% Mo and 0.02 to 0.2% V, in which, when the content of C is defined as x % and the content of Mo as y %, (x) and (y) satisfy the relation of 6-15x

公开(公告)号：JPH09155643A

公开(公告)日：1997-06-17

申请号：JP31871895

申请日：1995-12-07

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： NAKAI YOSHIHIRO ,  MIYAZAKI TAKESHI ,  NISHIKAWA TAICHIRO ,  EZAKI SHIGEO ,  KUME TOSHIHIRO

IPC: B23H7/08

Abstract: PROBLEM TO BE SOLVED: To shorten an electric discharge machining time by a method wherein a diffusion layer present on an interface between a core and a covering layer is set to 5μm or less. SOLUTION: In an electrode wire for a wire electric discharge machining having a core and a covering layer formed on the outer periphery of the core, the chickens X of the covering layer is in a range of 0.02D

公开(公告)号：JPH08203345A

公开(公告)日：1996-08-09

申请号：JP1357395

申请日：1995-01-31

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： MIYAZAKI TAKESHI ,  NAKAI YOSHIHIRO ,  NISHIKAWA TAICHIRO

IPC: G01K7/16 ,  G01K7/36 ,  G01K7/38 ,  H01B7/32

Abstract: PURPOSE: To provide a temperature sensing wire that has a good space factor and can monitor current flow through an inner conductor and ambient temperature simultaneously by providing an outer conductor made of a specific metal around the outer periphery of an insulating cover located around the inner conductor. CONSTITUTION: An outer conductor 3 wound on the outer periphery of an insulating cover 2 changes from a ferromagnetic body to a paramagnetic body when in a specific temperature range. A current is made to flow through the external conductor 3 by a magnetic field produced by a current flowing through an inner conductor 1, and greatly varies near the temperature at which the change from the ferromagnetic body to the paramagnetic body occurs. Then the current flowing through the outer conductor 3 is varied also by the current flowing through the inner conductor 1, so that by monitoring the current flowing through the outer conductor 3, the current flowing through the inner conductor 1 and the wire temperature can be monitored simultaneously. An insulating cover 4 may be provided on the outer periphery of the outer conductor 3, and the outer conductor 3 is desirably wound into a spiral shape so that the conductors do not make contact. The outer conductor 3 is desirably made of an Ni- base alloy.

公开(公告)号：JPH07161222A

公开(公告)日：1995-06-23

申请号：JP30359493

申请日：1993-12-03

Applicant: DAIDO STEEL CO LTD ,  SUMITOMO ELECTRIC INDUSTRIES

Inventor： SAITOU TAKANOBU ,  YAHAGI SHINICHIROU ,  NISHIKAWA TAICHIRO ,  MIYAZAKI TAKESHI ,  KUZE TAKAYUKI ,  FUJII KAZUYUKI

IPC: C22C38/00 ,  C22C38/06 ,  H01B1/02 ,  H01B5/08

Abstract: PURPOSE:To provide heat generation for an iron loss required for melting snow in a low magnetic field and to sufficiently exert snow accretion preventing effect by forming a snow melting member for a transmission line of the specific composition Fe-Al alloy. CONSTITUTION:A snow melting member for a transmission line consists of 1-15% by weight of Al, the rest of Fe, and unavoidable impurities. The snow melting member may be machined into a snow melting alloy wire for a transmission line or a snow melting alloy ring for a transmission line. Alternatively, the snow melting alloy wire for a transmission line may be spirally wound on a transmission line. The principle of melting snow of the snow melting member is as follows. In the circuit of the transmission line in which alternating current flows, an iron loss is generated in a magnetic body when a Fe-Al alloy magnetic body is arranged, and the generated heat due to the iron loss melts a snow accretion on the transmission line. The iron loss in the magnetic body is mainly the sum of a magnetic hysteresis loss and an eddy current loss.

公开(公告)号：JP2002256395A

公开(公告)日：2002-09-11

申请号：JP2001058301

申请日：2001-03-02

Applicant: SANYO SPECIAL STEEL CO LTD ,  SUMITOMO ELECTRIC INDUSTRIES

Inventor： KARIYA TETSURO ,  ISOMOTO TATSURO ,  NISHIKAWA TAICHIRO ,  KITAMURA SHINICHI

IPC: C22C38/00 ,  C21D8/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/58

Abstract: PROBLEM TO BE SOLVED: To provide a high strength and low thermal expansion alloy which has excellent twisting characteristics, and is used as the material for the core wire of a low looseness transmission line, and an alloy wire thereof. SOLUTION: The high strength and low thermal expansion alloy having twisting characteristics has a composition containing, by mass, 0.1 to 0.4% C, >0.5 to 3.0% V and 25 to 50% Ni, and satisfying 2

公开(公告)号：JPH09240327A

公开(公告)日：1997-09-16

申请号：JP21120796

申请日：1996-08-09

Applicant: SUMITOMO ELECTRIC INDUSTRIES ,  NISHINIPPON RYOKAKU TETSUDO KK

Inventor： KUDO KAZUYOSHI ,  IKEDA KENJI ,  OKADA TADANOBU ,  ITO SADAO ,  KAJIWARA MASAHIDE ,  FUKUI SEIICHI ,  OKU GOJI ,  KURIHARA HIDEMOTO ,  NISHIKAWA TAICHIRO

IPC: G01B21/00 ,  B60M1/13 ,  B60M1/28

Abstract: PROBLEM TO BE SOLVED: To highly accurately measure the wear quantity of a trolley line by forming a step part having a level difference part of a width increasing/ decreasing direction in a sliding part and extending this step part to a hanging groove so as to set a wear limit position between the sliding part and the groove on the step part. SOLUTION: A sliding part 13 is composed of a large circular-arc part 15 including a crossing point 14 with a center line A and step parts 16 formed in both ends of the large circular-arc part 15, and the step parts 16 are protruded outward, that is, in a direction for increasing the width of the sliding part 13 from both ends of the large circular-arc part 15 by a level difference part 17 forming a level difference having a fixed width. The side faces 18 of the step parts 16 are continued to the lower edge of a hanging groove 11 and a wear limit position C is set between an orthogonally crossing line B orthogonally crossing the center line A in a center O and the level difference part 17 by a specified distance from the level difference part 17. Thus, the wear quantity of the trolley line is highly accurately measured.

公开(公告)号：JPH0870525A

公开(公告)日：1996-03-12

申请号：JP20311594

申请日：1994-08-29

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： NISHIKAWA TAICHIRO

IPC: C22C38/00 ,  C22C38/10 ,  H01B5/08 ,  H02G7/16

Abstract: PURPOSE: To provide a sufficient heating efficiency for snow melting during a low power flow in winter and a low heating efficiency during a high power flow in summer for not affecting electric wire by using a material having a low Curie point as an inner layer material at the center, using a soft magnetic material as a middle layer and further using an anticorrosive layer as outer layer around the soft magnetic material. CONSTITUTION: As a low Curie point material for an inner layer, a Fe 32wt.% Ni alloy (Curie point 138 deg.C) and an Fe 38wt.% Ni alloy (Curie point 220 deg.C) are used. Also, as soft magnetic materials for a middle layer, Fe/Al-based, Fe/Si-based, Fe/Co-based alloy and pig iron are used. As a result, the value of iron loss in low-temperature, low magnetic field was higher than 7W/kg and iron loss in high-temperature and high magnetic field was less than 50W/kg and therefore the magnetic alloy member for melting snow and ice on electric wire can provide a sufficient heating efficiency for melting snow even during low power flow in winter. Also, during a high power flow in summer, a low heating efficiency can be obtained, which will not affect the electric wire during the high power flow in summer.

公开(公告)号：JPH0827531A

公开(公告)日：1996-01-30

申请号：JP16216094

申请日：1994-07-14

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： NAKAI YOSHIHIRO ,  NISHIKAWA TAICHIRO

IPC: B22D27/04 ,  C22C1/02 ,  C22C9/00 ,  C22F1/00 ,  C22F1/08 ,  H01B1/02

Abstract: PURPOSE:To produce a copper alloy conductor excellent in electric conductivity, tensile strength, bending strength, etc., by preparing a copper alloy conductor containing specific amounts of B. CONSTITUTION:A raw material, consisting of, by weight, 0.01- =150 deg.C/sec cooling rate thereby, the copper alloy conductor is prepared. By this method, the copper alloy conductor, excellent in mechanical properties, such as tensile strength and bending strength, as well as in electric properties such as electric conductivity and used for electric and electronic equipment and traffic use, can be obtained.