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1. 发明专利

JP2001135510A RARE EARTH MAGNET POWDER AND ANISOTROPIC BOND MAGNET 失效
公开(公告)号：JP2001135510A
公开(公告)日：2001-05-18
申请号：JP2000295062
申请日：2000-09-27
申请人： HITACHI METALS LTD
发明人： IWASAKI KATSUNORI , ENDO MINORU , TOKUNAGA MASAAKI
IPC分类号： B22F9/04 , B22F1/00 , H01F1/057 , H01F1/06 , H01F1/08
摘要： PROBLEM TO BE SOLVED: To provide anisotropic rare earth magnet powder whose magnetic characteristic is improved as compared with the conventional case, and an anisotropic bond magnet. SOLUTION: Rare earth magnet powder is practically composed of aggregate of fine crystal grains wherein R2T14B phase (R is at least one kind of rare earth elements containing Y, and T is Fe or Fe and Co) whose mean crystal grain diameter is 0.02-5 μm is made main phase. Quantity of residual hydrogen is 28-240 ppm.

2. 发明专利

JP2530641B2 失效
公开(公告)号：JP2530641B2
公开(公告)日：1996-09-04
申请号：JP3737887
申请日：1987-02-20
申请人： HITACHI METALS LTD
发明人： TOKUNAGA MASAAKI , NOZAWA YASUTO , IWASAKI KATSUNORI
IPC分类号： C22C38/00 , B22F9/04 , H01F1/057 , H01F1/08

3. 发明专利

JPH08186018A MAGNET BELT 失效
公开(公告)号：JPH08186018A
公开(公告)日：1996-07-16
申请号：JP33790094
申请日：1994-12-27
申请人： HITACHI METALS LTD
发明人： KURIYAMA YOSHIHIKO , TANAKA MORIMICHI , TOKUNAGA MASAAKI , KOBAYASHI AKIO
IPC分类号： B61B13/00 , B61B13/12 , B62D55/265 , B65G54/02 , H01F7/02 , H01F7/20
摘要： PURPOSE: To provide the title magnet belt of which the life is prolonged and by which the fixing strength of a magnet unit is maintained. CONSTITUTION: The title magnet belt composed of yokes 6 having protrusions 8 beneath both end parts arranged in plural positions on the belt 20 surface, magnets 7 arranged on the yokes 6, belt holes provided on both end parts of the belt 20 and a cylindrical sleeves 10 which are arranged in the belt holes and into which the protrusions 8 are inserted is engagement-fixed by pressing down the front end part of the sleeve 10 on the surface of the belt 20 or arranging the front end part of the sleeve 10 in the belt 20.

4. 发明专利

JPH08119101A MAGNETIC BELT TYPE TRANSPORT DEVICE 失效
公开(公告)号：JPH08119101A
公开(公告)日：1996-05-14
申请号：JP28134894
申请日：1994-10-20
申请人： JISHAKU YUSO SYS KAIHATSU KK , HITACHI METALS LTD
发明人： MATSUI KAZUMI , GOMI TAKAHIRO , TOKUNAGA MASAAKI , KURIYAMA YOSHIHIKO , KOBAYASHI AKIO
IPC分类号： B61B13/12 , B60L13/00 , B62D55/265 , H02K41/00
摘要： PURPOSE: To provide a magnetic belt type transport device free from a drop in attraction force even in a cold zone, allowing an easy maintenance work and capable of preventing an environmental disruption. CONSTITUTION: This device has a tube girder 1 supported on a pillar 2 for allowing the travel of a vehicle 3 inside, a travel route 6 laid on the lower surface of the tube 1, and a guide rail 7 laid approximately at the center of the route 6. Furthermore, the device has travel wheels 13 fitted to both lower ends of the vehicle 3 for travel along the route 6, and a magnetic belt 61 laid on the lower side of the vehicle 3 for rotation in such a state as attracting the side of the rail 7.

5. 发明专利

JPH089624A MAGNETIC CIRCUIT FOR MAGNET BELT 失效
公开(公告)号：JPH089624A
公开(公告)日：1996-01-12
申请号：JP32995094
申请日：1994-12-05
申请人： HITACHI METALS LTD , JISHAKU YUSO SYS KAIHATSU KK
发明人： TOKUNAGA MASAAKI , KURIYAMA YOSHIHIKO , MATSUI KAZUMI , GOMI TAKAHIRO
IPC分类号： B61B13/12 , H02K49/00 , H02K51/00
摘要： PURPOSE:To suppress the quantity variation of magnetic fluxes in a magnetic circuit for BTM so as to improve the durability of a BTM by reducing the wear of yokes in the magnetic circuit. CONSTITUTION:A magnetic circuit for magnet belt is constituted by arranging yokes 6 formed of wear-resistant carbon steel containing carbon by 0.12-0.61wt.% and having Vickers harness (Hv) of 115-30 on the surface of a magnet belt which is provided to a vehicle and gives a thrust to the vehicle when the belt is rotated while the belt is attracted to a rail fixed on the ground surface at a plurality of positions and magnets 7 on the yokes 6. Each yoke 6 is formed in such a way that the yoke 6 has a U-shaped cross section and upper surface of the yoke 6 at both end sections is brought into contact with the rail. In addition, a permanent magnet 7 is magnetized in the same direction as the attraction direction of the belt to the rail.

6. 发明专利

JPH07157239A LINEAR ELEVATOR 失效
公开(公告)号：JPH07157239A
公开(公告)日：1995-06-20
申请号：JP32622893
申请日：1993-11-30
申请人： HITACHI METALS LTD , JISHAKU YUSO SYS KAIHATSU KK
发明人： MATSUI KAZUMI , TANAKA SHOGO , TOKUNAGA MASAAKI
IPC分类号： B66B9/02 , B66B7/00 , B66B9/16
摘要： PURPOSE:To improve transport efficiency by markedly shortening a turn back operation time of a gondola while improving an effective area of a building. CONSTITUTION:When the first gondola 2a in a high speed guide path 1a arrives at a stop story 3a, the first gondola 2a is made to halt, and the first gondola 2a, when it is advanced into the first rotary path 10a, is transferred to the other elevator shaft in the high speed guide path 1a by rotating the rotary path 10. When the second gondola 2b in a low speed guide path 1b is advanced into the second rotary path 10b, it is rotated to transfer the second gondola 2b to the other elevator shaft in the low speed guide path 1b.

7. 发明专利

JPH05339683A 失效
公开(公告)号：JPH05339683A
公开(公告)日：1993-12-21
申请号：JP15183292
申请日：1992-06-11
申请人： HITACHI METALS LTD
发明人： NOGUCHI MASAKO , TAKAHASHI MASAHIRO , TANIGAWA SHIGEO , KOJO KATSUHIKO , TOKUNAGA MASAAKI
IPC分类号： B22F9/04 , C22C33/02 , C22C38/00 , H01F1/053 , H01F1/057 , H01F1/08
摘要： PURPOSE:To improve the performance of a magnet, in a sintered magnet allay expressed by R-Fe-B-M, by specifying the constitutional ratio of R and executing specified heat treatment and classificational circulating pulverization. CONSTITUTION:In a sintered magnet allay essentially consisting of rare earth elements, iron and baron expressed by R-Fe-B-M, the constitutional ratio of rare earth elements R is regulated to, by weight, 27 to 32%, a part of R is substituted by

8. 发明专利

JPH0529121A PERMANENT MAGNET 失效
公开(公告)号：JPH0529121A
公开(公告)日：1993-02-05
申请号：JP20489091
申请日：1991-07-19
申请人： HITACHI METALS LTD
发明人： TOKUNAGA MASAAKI , TABATA KOJI , ENDO MINORU
IPC分类号： C22C38/00 , H01F1/053 , H01F1/08 , H01F1/153
摘要： PURPOSE:To provide a magnet having an excellent magnetic characteristic and thermal stability and reduce the variation width of the magnetic characteristic caused by the variation of the age temperature when heat treatment is performed. CONSTITUTION:A magnet has the composition expressed by the general expression: R1-aDya (Fe1-x-y-zCoxByGaz)A, where R is a rare earth element mainly composed of Nd, and 0.01

9. 发明专利

JPH04147606A HOT PROCESSING MAGNET AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH04147606A
公开(公告)日：1992-05-21
申请号：JP27273990
申请日：1990-10-11
申请人： HITACHI METALS LTD
发明人： IWASAKI KATSUNORI , TANIGAWA SHIGEO , TOKUNAGA MASAAKI
IPC分类号： B22F9/04 , C22C33/02 , C22C38/00 , H01F1/053 , H01F1/057
摘要： PURPOSE:To ensure a permanent magnet in which variations of magnetic characteristics in a hot temperature processed magnet being a final molten product are reduced to the minimum, by previously subjecting to multiple layer pressing a raw material containing a trace amount of a specific element besides a chief element upon molding pressurized powder before hot processing. CONSTITUTION:There is quenched and solidified an R-T-B-X alloy comprising a rare earth element R containing transition metal T as a chief ingredient and yttrium, boron B, and one kind or two kinds or more of fine additive elements X. In a hot temperature processed magnet in which denseness at hot temperature and magnetic anisotropy by plastic processing are provided to magnetic powder yielded by grinding an R-T-B-X quenched thin band or thin piece, the fine additive element X includes those of a IV A group of Ti, Zr, and Hf, a VA group of V, Nb, and Ta, a WA group of Cr, Mo, and W, and an IB group and IIIB group and IV B group. Thus, a title hot processed magnet is yielded from the quenched thin band or thin piece which has the total doping amount of X ranging within 0.05-2at%.

10. 发明专利

JPH04144102A PERMANENT MAGNET 失效
公开(公告)号：JPH04144102A
公开(公告)日：1992-05-18
申请号：JP26698290
申请日：1990-10-04
申请人： HITACHI METALS LTD
发明人： TOKUNAGA MASAAKI , EGUCHI KIYOSHI
IPC分类号： C23C28/02 , H01F1/053 , H01F41/02
摘要： PURPOSE:To improve corrosion resistance and thermal shock resistance by constituting a protective layer, in the order of the protective layer by base Cu, the middle layer by Ni alloy, and the protective layer by Ni, on the surface of R-Fe-B permanent magnet, which contains R, Fe, and B and has a substantially tetragonal main phase. CONSTITUTION:A protective layer is constituted, in the order of the protective layer by base Cu, the middle layer by Ni alloy, and the protective layer by Ni, on the surface of a permanent magnet, which contains R (R is one or more kinds of rare earth elements, which include Y), Fe, and B, and has a substantially tetragonal main phase. The base Cu layer is excellent in the fitting with a R-Fe-B permanent magnet, and is effective for the improvement of adhesion strength, and especially it is good to make it by electroless plating. Moreover, as the middle cover layer by Ni alloy, for example, Ni alloy called Niron, where several % Fe is added to Ni, is used. From the relation of the magnitude of the ionization tendency of each layer, the uppermost Ni plating layer becomes a sacrifice electrode in an anode manner, and corrodes preferentially, so the corrosion does not advance to the base.

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