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21. 发明专利

DE68921156T2 未知
公开(公告)号：DE68921156T2
公开(公告)日：1995-06-14
申请号：DE68921156
申请日：1989-11-24
申请人： HITACHI LTD
发明人： SATO CHIE , SAKAMOTO MASAHIKO , OKAMURA HISANORI , FUNAMOTO TAKAO , OGIHARA MASAHIRO
IPC分类号： B23K35/26 , H01L39/02 , H01R4/68 , H01B12/00
摘要： The present invention provides a method for joining of high-temperature oxide superconductors (1) per se or a high-temperature oxide superconductor (1) and other conductive material (5) through a very simple process. According to this method, the joining is carried out by using an alloy (2) comprising 0.1-90% by weight of at least one divalent metallic element and the balance as a brazing material and heating and melting the brazing material. The resulting joined body has a joint low in resistance. The divalent metallic element of the alloy is preferably an element of Group IIA or IIB of the Periodic Table or a transition metal.

22. 发明专利

DE3682797D1 未知
公开(公告)号：DE3682797D1
公开(公告)日：1992-01-23
申请号：DE3682797
申请日：1986-03-25
申请人： HITACHI LTD
发明人： KAJIWARA RYOICHI , FUNAMOTO TAKAO , KATOO MITSUO , SHIDA TOMOHIKO , MATSUZAKA TAKESHI , WACHI HIROSHI , TAKAHASHI KAZUYA
IPC分类号： H01L23/473 , H01L23/433 , H01L23/46
摘要： A semiconductor module cooling structure comprises a housing (33) having a passage (45, 46) through which a cooling fluid flows; a cooling block (72,75) to which the cooling fluid is supplied from the housing and which has an electrical insulating layer (36, 59) at the bottom portion and is combined with a semiconductor chip (40) through the electrical insulating layer; and a bellows (34) which is connected between the housing and the cooling block. The cooling fluid is supplied to the cooling block through the bellows. The bellows is formed in a manner such that a plurality of substantially plane ring-like metal plates (4) are laminated, pressed, diffused, joined, and thereafter stretched and molded.

23. 发明专利

DE3864375D1 未知
公开(公告)号：DE3864375D1
公开(公告)日：1991-09-26
申请号：DE3864375
申请日：1988-10-04
申请人： HITACHI LTD
发明人： HARAMAKI TAKASHI , NAKAMURA MITSUO , KOKURA SATOSHI , FUNAMOTO TAKAO , TERAKADO KATSUYOSHI
IPC分类号： B23K3/04 , B23K1/00 , B23K35/30 , H01R4/02 , H01R43/02

24. 发明专利

JPH1119768A METHOD AND DEVICE FOR REPAIRING HELD OF GAS TURBINE BUCKET 失效
公开(公告)号：JPH1119768A
公开(公告)日：1999-01-26
申请号：JP17677297
申请日：1997-07-02
申请人： HITACHI LTD
发明人： URASHIRO KEIICHI , FUNAMOTO TAKAO , KOBAYASHI KAZU , IIZUKA NOBUYUKI , ISHII HIDEAKI
IPC分类号： F01D5/12 , B23K9/04 , B23K10/02 , F02C7/00
摘要： PROBLEM TO BE SOLVED: To enable nonoxidizing build-up welding without using special equipment such as a container or a chamber and to form a sound and fine build-up welding layer by welding while the repair part at the bucket tip end is enclosed with a gentle flow of a nonoxidizing atmospheric gas. SOLUTION: A part between the side face of the middle web in a gas turbine bucket 2 to be repaired and a welding torch 1 is covered with a solid substance 15 reinforced with a metallic wire, with Ar gas or a mixed gas of Ar and He sent in to the space so formed by means of a shield gas mechanism 17. In this state, using the welding torch 1, a build-up weld zone 4 is formed by a filler metal 10 in the repair part of the bucket tip end 3. Incidentally, in this welding, it is desirable to set the flow rate of a second shield gas 20 to be 2-50 liters, and to avoid cooling the weld zone with a rapid gas flow. Further, a series of executing conditions are decided by a weld condition controlling mechanism 47, with the build-up weld zone 4 monitored by a monitoring mechanism 12, so that a proper build-up welding is achieved.

25. 发明专利

JPH10180463A METHOD AND DEVICE FOR JOINING HEAT RESISTANT ALLOY 失效
公开(公告)号：JPH10180463A
公开(公告)日：1998-07-07
申请号：JP34304596
申请日：1996-12-24
申请人： HITACHI LTD
发明人： NIHEI MASAYASU , ONUKI HITOSHI , FUNAMOTO TAKAO
IPC分类号： B23K13/00 , B23K1/002 , B23K13/06 , B23K20/00 , C22C19/05
摘要： PROBLEM TO BE SOLVED: To prevent degradation in the alloy characteristics of a joined part, and to prevent generation of cracks by heating a joined surface layer part at the melting temperature or the vapor temperature of the filler metal through the high frequency energization or the induction heating under the vacuum condition, and closely attaching, pressing and joining each end. SOLUTION: Heat-resistant alloy joining materials 1a, 1b supported by carbons or high frequency energization electrodes 2a, b are arranged opposite to each other in a chamber 20 which is also used as an earth, and evacuation is made down to the pressure of 2×10 Pa. The whole joining materials 1a, 1b are heated to approximately 800 deg.C by a heater or a low frequency induction heater 12, the high frequency power is supplied to the joining materials 1a, 1b from high frequency power sources 4a, 4b, a joined surface layer part is melted in approximately two seconds, the load of approximately 5kgf/mm is applied to the joining surface by a load applying device 5, and after welding, the high frequency energization is stopped. After the welding, the controlled cooling is performed making use of the heater 12. A matching device 3 to efficiently supply the high frequency power to the joining surface is connected to the high frequency power sources 4.

26. 发明专利

JPH0680757B2 失效
公开(公告)号：JPH0680757B2
公开(公告)日：1994-10-12
申请号：JP28331887
申请日：1987-11-11
申请人： HITACHI LTD
发明人： KAJIWARA RYOICHI , FUNAMOTO TAKAO , KATO MITSUO , WACHI HIROSHI , SHIDA TOMOHIKO
IPC分类号： H01L23/40 , H01L23/46 , H01L23/473 , H05K7/20

27. 发明专利

JPH0631167B2 失效
公开(公告)号：JPH0631167B2
公开(公告)日：1994-04-27
申请号：JP6672489
申请日：1989-03-18
申请人： HITACHI LTD
发明人： SAKAMOTO MASAHIKO , OKAMURA HISANOBU , OKAYAMA AKIRA , FUNAMOTO TAKAO
IPC分类号： B23K1/19 , C04B37/02

28. 发明专利

JPH0418705B2 失效
公开(公告)号：JPH0418705B2
公开(公告)日：1992-03-27
申请号：JP28096085
申请日：1985-12-16
申请人： HITACHI LTD
发明人： FUNAMOTO TAKAO , KAJIWARA RYOICHI , KATO MITSUO , MATSUZAKA KYO , SHIDA TOMOHIKO , WACHI HIROSHI , TAKAHASHI KAZUYA , WATABE MASATOSHI , YAMADA MINORU , NAKANISHI KEIICHIRO , SUGAWARA TOSHIO
IPC分类号： H01L23/36 , H01L23/538 , H05K1/02 , H05K1/03

29. 发明专利

JPH03253007A MANUFACTURE OF SUPERCONDUCTIVE MAGNETIC FIELD GENERATOR AND SUPERCONDUCTIVE COIL 失效
公开(公告)号：JPH03253007A
公开(公告)日：1991-11-12
申请号：JP4929490
申请日：1990-03-02
申请人： HITACHI LTD
发明人： FUKUMAKI TAKASHI , NAKAMURA MITSUO , FUNAMOTO TAKAO , SAKAMOTO MASAHIKO , TAKIZAWA TERUHIRO , YAMAGIWA TAKESHI
IPC分类号： G01R33/381 , A61B5/055 , G01R33/20 , G21B1/11 , H01B12/02 , H01F6/06 , H01L39/02 , H01R4/18 , H01R4/20 , H01R4/68 , H01R43/048
摘要： PURPOSE:To notably decrease the attenuation factor thereby enabling the magnetic field stabilized for a long time to be generated by a method wherein the connecting part of superconductive coil is composed of an auxiliary junction material, a core material, superconductive strands and a stabilizing material to be plasticized at isotropical pressure. CONSTITUTION:Within a superconductive coil comprising a connecting part etc., connecting multiple superconductive coil end parts to adjacent coil end parts, the connecting part is composed of an auxiliary junction material 14, superconductive strands 16, a core material 18 and a stabilizing material 20. For example, as for the superconductive wires 22, 22', the ends thereof are immersed in 60% HNO3; the stabilizing material 20 on the ends is removed to expose the strands, the superconductive strands 14 as the auxiliary junction material 14 are assembled together, while the stabilizing material 20 as the core material 18 is inserted into the central part of the strands 14, 16. Next, the superconductive strand group is plasticized at an isotropic pressure to be pressed down, the sectional space of the ambient stabilizing material 20 is specified to exceed ten times of the assumed sectional space (one) of the strands 16 including the auxiliary junction material 14 so that the coil ends may be connected to make the junction length exceed 15mm. Through these procedures, the connection resistance is lowered while the marginal current is increased/thereby enabling the magnetic field stabilized for a long time to be generated.

30. 发明专利

JPH02187275A MANUFACTURE OF JOINT FOR PIPING OF DIFFERENT MATERIALS 失效
公开(公告)号：JPH02187275A
公开(公告)日：1990-07-23
申请号：JP270789
申请日：1989-01-11
申请人： HITACHI LTD
发明人： KONUMA TSUTOMU , ASANO CHOICHI , FUNAMOTO TAKAO , TSUJIMURA HIROSHI , TAMAI YASUKATA
IPC分类号： B23K9/23 , B23K9/028 , B23K20/00 , B23K103/04
摘要： PURPOSE:To prevent the corrosion resistance of a welding joint from lowering and to reduce the residual stress by welding a part obtained by previous solid phase joining of a stainless steel pipe and a carbon pipe to a steel pipe of the material side of the respective same kind. CONSTITUTION:A stainless steel pipe 2 and a carbon steel pipe 1 or a low alloy steel pipe 1 are connected for piping. Then, the parts obtained by joining these steel pipes 1, 2 previously through solid phase joining are connected respectively to the steel pipes on the sides of the same kinds of material by welding. Steel pipes are joined by solid phase joining due to previous hot isostatic pressing to different materials and parts restraining generation of different phases due to the mutual diffusion of both different metals on the joining surface are welded respectively to the steel pipes on the sides of the same kinds of material. Solid phase welding is carried out by hot isostatic pressing joining under the interpolation of intermediate material 3 such as Fe, Ni, or Ni alloy having a thickness exceeding 50mum. Thus, a peeling defect can prevented from occurring in the rolling laminated structure.

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