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1. 发明专利

JPS6450321A MANUFACTURE OF OXIDE SUPERCONDUCTOR 失效
公开(公告)号：JPS6450321A
公开(公告)日：1989-02-27
申请号：JP20635187
申请日：1987-08-21
申请人： HITACHI LTD
发明人： YOSHINARI AKIRA , UCHIDA TETSUO , MORIMOTO SHOGO
IPC分类号： B28B1/00 , H01B12/06 , H01B13/00
摘要： PURPOSE:To obtain a high reliable superconductive wire material without difficulty to make a wire material because of fragility peculiar to oxide by dispersing a raw material powder of an oxide superconductive material in a pure copper, and conducting a heat treatment in an oxygen atmosphere or air after the wire material is made. CONSTITUTION:A pure copper is filled in an alumina pot and melted with a high frequency. A powder in which BaO and Y2O3 of below 1mum are mixed at 2:1 in the mole ratio is added in a melted liquid while the temperature of the melted liquid is maintained at 1450 deg.C after melting, the temperature is lowered with the liquid stirred, and an ingot in which the powder is uniformly dispersed in the pure copper is made. The ingot is hot extruded at 600 deg.C, and a wire material having a diameter of 0.5mm phi is obtained. Then the wire material is made cold wire drawing, and made to a wire material having a diameter of 0.1mm phi. A heat treatment in an oxide atmosphere at 950 deg.C*10hr. is applied to these two dinds of the wire material. An electric resistance shows zero at 88K in the wire material made thus. The same effect can be obtained by conducting a heat treatment after rolling and making to a tape-state thin plate instead of an extrusion or wire drawing process.

2. 发明专利

JPS6450318A MANUFACTURE OF OXIDE SUPERCONDUCTOR 失效
公开(公告)号：JPS6450318A
公开(公告)日：1989-02-27
申请号：JP20634787
申请日：1987-08-21
申请人： HITACHI LTD
发明人： YOSHINARI AKIRA , UCHIDA TETSUO , MORIMOTO SHOGO
IPC分类号： H01B12/02 , H01B13/00
摘要： PURPOSE:To easily obtain a long-size wire material by conducting a heat treatment in an oxygen atmosphere or air with alloy, composed of an element other than oxygen of an oxide superconductive material and having a different component, mechanically joined with pressure. CONSTITUTION:Two kinds of metallic plates are mechanically joined, and the joined interface is made to a superconductor 3. For instance, two kinds of alloy plates are made to a Y-Cu alloy 2 and a Ba-Cu alloy 1, and an ingot is manufactured by high frequency melting in vacuum using calcium pot. The ingot manufactured is rolled to have a 2mm thickness, then two plates are overlapped and concurrently rolled and mechanically joined to be a plate having a 0.5mm thickness. A square bar having one side of 0.5mm is cut down from the plate, wire drawing is made to have a 0.1mm size, then a 10hour heat treatment is conducted in an oxygen atmosphere at 800 deg.C, and the joined interface is made to a superconductor. This eliminates difficulty because of fragility peculiar to oxide when a wire material is manufactured.

3. 发明专利

JPS62120447A MANUFACTURE OF METALLIC MATRIX-FIBER COMPOSITE MATERIAL 失效
公开(公告)号：JPS62120447A
公开(公告)日：1987-06-01
申请号：JP26065785
申请日：1985-11-20
申请人： HITACHI LTD
发明人： ARAKAWA HIDEO , MORIMOTO SHOGO , NUMATA YOSHIMICHI , SASAKI TOSHIMI
IPC分类号： C22C47/20 , C22C47/00 , C22C47/02 , C22C47/04
摘要： PURPOSE:To strengthen the interface between matrix-forming metal and fibers and to improve heat resistance by allowing trace amounts of additive elements which enter into solid solution in a metal for forming matrix and react with fibers to enter into solid solution uniformly with the metal for forming matrix. CONSTITUTION:A coating layer 2 of the metal for forming matrix is formed on a fiber 1, and plural pieces of the fibers are bundled,and then a fine wire 3 of the metal containing the additive elements which enter into solid solution in the metal for forming matrix and react with the fiber 1 is wound round the above bundle. This bundle of fibers is woven into prescribed fiber blending, and the resulting woven fabrics are alternately laminated so that they are perpendicular to each other. When the above is subjected to hot pressing, the additive elements contained in the metallic fine wire 3 are diffused into the base metal in the coating layer 2 of the fiber 1 to form a solid solution.

4. 发明专利

JPS61169689A COMPLEX SCREW ROTOR 失效
公开(公告)号：JPS61169689A
公开(公告)日：1986-07-31
申请号：JP907985
申请日：1985-01-23
申请人： HITACHI LTD
发明人： FUJII MITSURU , MORIMOTO SHOGO , KONDO YASUO
IPC分类号： F01C1/16 , F01C1/08 , F04C18/16
摘要： PURPOSE:To obtain a complex screw rotor having a small thermal expansion coefficient, high bending rigidity, and high fatigue strength by making the shaft part of a screw rotor from the material having a rigidity and strength, and making the toothed part from the material having a low thermal expansion rate and high cutting performance. CONSTITUTION:The shaft part 1 of a screw rotor is made of the iron-basic material containing the ordinary alloy elements having a Young's modulus of 18,000kg/mm or more and a fatigue strength of 45kg/mm after the operations in 5X10 times. A toothed part 2 is made of the low thermal expansion material such as high nickel ductile cast-iron having an average thermal expansion coefficient of 6X10 / deg.C or less at 20-200 deg.C, and said toothed part 2 is joined onto the shaft part 1 through the proper means such as casting joint and shrink-fit, etc.

5. 发明专利

JPS518117A 失效
公开(公告)号：JPS518117A
公开(公告)日：1976-01-22
申请号：JP7828374
申请日：1974-07-10
申请人： HITACHI LTD
发明人： SAKAI ATSUJI , MORIMOTO SHOGO , SHIMAKUNI TAKASHI
IPC分类号： B22C1/08 , B22C1/00 , B22C1/10 , B22C1/18

6. 发明专利

JPH0464795B2 失效
公开(公告)号：JPH0464795B2
公开(公告)日：1992-10-16
申请号：JP4657984
申请日：1984-03-13
申请人： HITACHI LTD
发明人： HIRANE TERUO , FUNAMOTO TAKAO , MORIMOTO SHOGO , SASAKI TOSHIMI
IPC分类号： B23K20/00 , B23K1/00 , B23K20/22 , B23K20/24 , B23K35/00

7. 发明专利

JPS63250435A NICKEL BASE ALLOY HAVING EXCELLENT THERMAL FATIGUE RESISTANCE AND CORROSION RESISTANCE 失效
公开(公告)号：JPS63250435A
公开(公告)日：1988-10-18
申请号：JP8669787
申请日：1987-04-08
申请人： HITACHI LTD
发明人： NAKAMURA SHIGEYOSHI , KASHIMURA TETSUO , MORIMOTO SHOGO
IPC分类号： C22C19/05
摘要： PURPOSE:To obtain the titled alloy by specifying the compsn. consisting of C, Cr, Co, W, Nb, Si, Mn, Ta, Al, Ti, Zr, B and Ni. CONSTITUTION:The Ni based alloy contains, by weight, 0.1-0.25% C, 15-30% Cr, 0-15% Co, 0-5% W, 0.5-2.5% Nb,

8. 发明专利

JPS6349579B2 失效
公开(公告)号：JPS6349579B2
公开(公告)日：1988-10-05
申请号：JP12114180
申请日：1980-09-03
申请人： HITACHI LTD
发明人： SAKAI JUNJI , MORIMOTO SHOGO
IPC分类号： B22C1/08 , B22C1/16 , B22C1/18 , B22C7/00 , B22C9/02

9. 发明专利

JPS6317020B2 失效
公开(公告)号：JPS6317020B2
公开(公告)日：1988-04-12
申请号：JP13626482
申请日：1982-08-06
申请人： HITACHI LTD
发明人： SAKAI JUNJI , MORIMOTO SHOGO , MORIKAWA MINORU , MAEHASHI YOSHITSUGU
IPC分类号： B22C7/00 , B22C1/00 , B22C1/08 , B22C1/18 , B22C9/02 , B22C9/04

10. 发明专利

JPS62278486A NUCLEAR FUEL ELEMENT 失效
公开(公告)号：JPS62278486A
公开(公告)日：1987-12-03
申请号：JP12110186
申请日：1986-05-28
申请人： HITACHI LTD
发明人： FUJII NORIHISA , MORIMOTO SHOGO , MAKI HIDEO , MATSUMOTO TOSHIHIRO
IPC分类号： G21C3/20

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