专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明专利

JPS60198368A FUEL-INJECTION PUMP 失效
公开(公告)号：JPS60198368A
公开(公告)日：1985-10-07
申请号：JP5240384
申请日：1984-03-21
申请人： HITACHI LTD
发明人： ABE TAKAO , KAMITSUMA YASUO , KOBAYASHI MITSURU , MATSUZAKA KIYOU , HOSHI KIICHI , TOMOSAKI RIYOUZOU
IPC分类号： F02M41/14
摘要： PURPOSE:To improve galling resistance and wearproofness in cam ring friction mechanical part consisting of these members, by forming a cam ring with the sintered high-speed steel processed with sulphurizing and nitriding and a roller with the ingot high-speed steel or the like processed with the nitriding, respectively. CONSTITUTION:When a rotor 5 rotates, a roller 2, a roller shoe 3 and a plunger 4 all installed inside the rotor 5 are all set in motion as one body. Then, the roller 2 comes into contact with both concave and convex parts at the inner diametral side of a cam ring 1, and in the meantime it shifts the concave part, the fuel fed to an empty space 6 is compressed at the convex part. In this case, the cam ring 1 is made up of the sintered high-speed steel processed with sulphurizing and nitriding and the roller 2 is made up of the ingot high-speed steel or the sintered high-speed steel processed with the nitriding, whereby a cam ring friction mechanical part is constituted of these members combined. With this constitution, a combination of material selection and casehardening treatment is properly performed, improving galling resistance in a cam ring mechanical material ever so better, thus reliability in a fuel-injection pump is improved.

22. 发明专利

JPS6024959A COPPER-CLAD PRINTING WIRE 失效
公开(公告)号：JPS6024959A
公开(公告)日：1985-02-07
申请号：JP13270183
申请日：1983-07-22
申请人： HITACHI LTD
发明人： KAMITSUMA YASUO , ABE TAKAO , KOBAYASHI MITSURU , MATSUZAKA KIYOU , TAMAMURA TATEO
IPC分类号： B41J2/25
摘要： PURPOSE:To improve brazing characteristics of a copper-clad printing wire as well as wear resistance and also permit the speed-up of the wire by a method in which copper is covered on a Ti alloy containing specific amounts of Mo, Zr and aluminium, the Ti alloy is cold-processed, and a superhard top is brazed to the tip of the wire. CONSTITUTION:A Ti alloy consisting of 11-17% Mo, 3-7% Zr, 1.5-5% aluminium, and Ti as main component is covered with copper. The Ti alloy is subjected to a cold working of 30% or more working rate to form a wire 0.2-0.6mm. in diameter. The tip of the wire is brazed with a superhard tip. Since the superhard tip is attached to the tip of the Ti alloy printing wire, its wear resistance can be raised. Also, since defective percent of jointing between the oxide film of the Ti alloy and the lever of bad brazing property is high, the wire is covered with copper when drawing the wire to form a composite wire having a thin (5-50mum) Cu film on its Ti alloy surface. The brazing property and strength of the wire are excellent, and speed-up of light-weight dot printer can be attained.

23. 发明专利

JPH08262009A EVALUATION METHOD OF REMAINING LIFE OF HIGH-TEMPERATURE MEMBER 失效
公开(公告)号：JPH08262009A
公开(公告)日：1996-10-11
申请号：JP6370995
申请日：1995-03-23
申请人： HITACHI LTD
发明人： TAMAOKI HIDEKI , YOSHINARI AKIRA , KOBAYASHI MITSURU , WATABE NORIYUKI
IPC分类号： G01N33/20 , C22C19/07
摘要： PURPOSE: To evaluate the remaining life of a high-temperature member with high accuracy by a method wherein the relationship between the quantified value of a shape and the damage amount of the high-temperature member is found in advance and the shape of a eutectic structure is quantified by an image processing method. CONSTITUTION: The creep rupture test of a creep-damaged material by using an unused material which is the same as an actual-machine material is executed under several conditions of different stresses. In addition, a sample whose rupture time has been interrupted at 10 to 90% of the time is prepared. Samples, for structure observation, which have been sampled from interrupted materials and ruptured materials are observed with a scanning electron microscope, and their eutectic structure shape is quantified at an aspect ratio by using an image analyzer. Then, the relationship between the aspect ratio and a damage amount is registered as a master curve 7 in a database 6. Then, a sample actual-machine observation is sampled from an actual machine in which the main damage of a moving blade is creep damage due to the result of an investigation, and it is observed in the same manner as the creation of the curve 7 so as to be quantified. this quantified value is applied to the curve 7, and the damage amount of the actual-machine material is found. Thereby, a remaining life can be evaluated with high accuracy.

24. 发明专利

JPH07145703A MOVING BLADE FOR GAS TURBINE, MANUFACTURE THEREOF, AND GAS TURBINE USING SAME 失效
公开(公告)号：JPH07145703A
公开(公告)日：1995-06-06
申请号：JP18440594
申请日：1994-08-05
申请人： HITACHI LTD , TOHOKU ELECTRIC POWER CO
发明人： YOSHINARI AKIRA , TAMAOKI HIDEKI , SAITO TOSHIAKI , KOBAYASHI MITSURU , IIJIMA KATSUMI , WADA KATSUO , KANO KIMIO , MATSUZAKI HIROYUKI
IPC分类号： F01D5/18 , B22D27/04 , C22C19/05 , F01D5/28 , F02C7/00
摘要： PURPOSE:To achieve excellent creep strength and eliminate an intercrystalline crack by constituting a moving blade of an integral casting where a part of a blade unit, a platform and a shank unit is made of monocrystal and a part except for the part made of monocrystal is made of columnar crystal coagulated in one direction. CONSTITUTION:A gas turbine moving blade comprises a blade unit 1, a platform 15 having a flat portion continuous to the blade unit 1, a shank unit 18 continuous to the blade 1 and the platform 15, and fins 14 formed on both sides of the shank unit 18, a dovetail continuous to the shank unit 18. The blade unit 1 is made of monocrystal, and the whole except for the blade unit 1 is an integral casting of columnar crystal coagulated in one direction. The casting is composed of 0-0.20wt.% of C, 2-16wt.% of Cr, 4-7wt.% of Al, 2-15wt.% of W, 0.5-5wt.% of Ti, 0-3wt.% of Nb, 0-6wt.% of Mo, 0-12wt.% of Ta, 0-10.5wt.% of Co, 0-2wt.% of Hf, 0-4wt.% of Re, 0-0.035wt.% of B, 0-0.035wt.% of Zr and the rest of 58wt.% or more of Ni.

25. 发明专利

JPH0770679A HIGH CORROSION RESISTANT AND HIGH STRENGTH CEMENTED CARBIDE, HIGH CORROSION RESISTANT AND HIGH STRENGTH SINGLE CRYSTAL CASTING, GAS TURBINE AND COMBINED CYCLE GENERATING SYSTEM 失效
公开(公告)号：JPH0770679A
公开(公告)日：1995-03-14
申请号：JP22161893
申请日：1993-09-07
申请人： HITACHI METALS LTD , HITACHI LTD
发明人： SATO KOJI , OONO TAKEHIRO , TAMAOKI HIDEKI , YOSHINARI AKIRA , KOBAYASHI MITSURU , WATABE NORIYUKI
IPC分类号： C22C19/05 , C30B29/52
摘要： PURPOSE:To provide a cemented carbide combining corrosion resistance more excellent than that of the existing single crystal alloys and oxidation resistance, high strength and creep fracture strength on a high level among the existing single crystal alloys, to provide single crystal cast parts for blades and nozzles using the same and to provide a combined cycle generating system using the same parts. CONSTITUTION:This high corrosion resistant and high strength cemented carbide is the one contg., by weight, 5.5 to 12% Cr, 4.5 to 6.5% Al, 0.1 to 5% Ti, 2 to 12% W, 2.5 to 10% Ta,

26. 发明专利

JPH03260032A OXIDE DISPERSED NIOBIUM ALLOY AND ITS MANUFACTURE 失效
公开(公告)号：JPH03260032A
公开(公告)日：1991-11-20
申请号：JP5936990
申请日：1990-03-09
申请人： HITACHI LTD
发明人： YASUDA TAKESHI , KODAMA HIDEYO , FUJIWARA TETSUO , KOBAYASHI MITSURU , SUWA MASATERU
IPC分类号： F01D5/28 , C22C1/10 , C22C27/02 , C22C29/06 , C22C29/08 , C22C29/10 , C22C29/12 , C22C29/14 , C22C29/16 , C22C32/00
摘要： PURPOSE:To manufacture an oxide dispersed Nb alloy excellent in high temp. strength and toughness by incorporating granulating components into a molten metal consisting essentially of Nb and Al, rapidly cooling it, dispersing grains having specified grain size into an Nb3Al matrix and solidifying it. CONSTITUTION:Granulating components are incorporated into a molten metal consisting of, by weight, 83 to 96% Nb and 4 to 17% Al and, if required, furthermore admixed with about =30K/sec cooling rate. In this way, this oxide dispersed Nb alloy of which

27. 发明专利

JPH01284464A MOLD FOR CAST STRIP CONTINUOUS CASTING 失效
公开(公告)号：JPH01284464A
公开(公告)日：1989-11-15
申请号：JP11247688
申请日：1988-05-11
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： YASUDA TAKESHI , KODAMA HIDEYO , HIRANO SATOSHI , OKAYAMA AKIRA , KOBAYASHI MITSURU , KIMURA TOMOAKI , MORIWAKI SABURO
IPC分类号： B22D11/06
摘要： PURPOSE:To stabilize the production of a cast strip and to improve the quality of the cast strip by arranging a cavity adjoining to a refractory of a short side mold in the mold for continuous casting providing one pair of long side molds and the short side molds having the refractory. CONSTITUTION:The mold for cast strip continuous casting is constituted of one pair of the long side molds 5 and the short side molds 1. The short side mold 1 is formed with a mold main body 2 having copper-made sliding plates 2a, 2b and the high m.p. refractory 3, and the cavity 4 is arranged between the refractory 1 and the main body 2. At the time of shaping the cast strip 13 while cooling molten metal 12 by shifting of the mold 5, the cavity part 4 having heat insulating action reduces heat conduction from the refractory 3 to outside, to prevent temp. drop of the refractory 3. By this constitution, the development of solidified shell at surface part of the short side mold 1 is surely prevented. Therefore, the production of the cast strip is stabilized and as the shaping of the cast strip 13 is stabilized, the quality of the cast strip 13 is improved.

28. 发明专利

JPH01258853A CONTINUOUS CASTING MACHINE FOR CAST STRIP 失效
公开(公告)号：JPH01258853A
公开(公告)日：1989-10-16
申请号：JP8296988
申请日：1988-04-06
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： YASUDA TAKESHI , KODAMA HIDEYO , OKAYAMA AKIRA , KOBAYASHI MITSURU , SUWA MASATERU , HIRANO SATOSHI , HANAWA AKIO , KIMURA TOMOAKI , MORIWAKI SABURO
IPC分类号： B22D11/06
摘要： PURPOSE:To effectively monitor solidifying behavior in a mold and to control accurate casting condition by detecting temp. at near contacting side with molten metal of a short side mold and arranging temp. detecting means for monitoring the solidifying behavior in a mold. CONSTITUTION:The temp. detecting sensors 4 are arranged in a copper-made sliding plate 12 arranged at both side edge parts of the short side mold (side dam) 5 made of high m.p. refractory 3. By synthetically observing the temps. of these temp. detecting sensors 4, the solidifying behavior in the mold can be effectively monitored and control under more accurate casting condition can be executed and the stable cast strip can be obtd.

29. 发明专利

JPH01258852A CONTINUOUS CASTING MACHINE FOR CAST STRIP 失效
公开(公告)号：JPH01258852A
公开(公告)日：1989-10-16
申请号：JP8296888
申请日：1988-04-06
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： YASUDA TAKESHI , KODAMA HIDEYO , OKAYAMA AKIRA , KOBAYASHI MITSURU , SUWA MASATERU , HIRANO SATOSHI , HANAWA AKIO , KIMURA TOMOAKI , MORIWAKI SABURO
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent the development of solidified shell at meniscus part in short side mold and to stably obtain a cast strip having excellent quality by arranging means heating the meniscus part near contacting part of the short side mold and long side mold with laser beam. CONSTITUTION:Twin belt type continuous casting machine is arranged one pair of belts (long side mold) 2, 2 as mutually facing and the short side mold (side dam) 5 composing of high melting point refractory 3 at between both ends thereof, respectively. The laser generating elements 4 are set on the two short side molds (side dams) 5 so that the laser irradiation can execute all over the meniscus part in the short side mold. By this method, the development of the solidified shell at the meniscus part is prevented and the cast strip having excellent quality can be stably obtd.

30. 发明专利

JPS61196170A SPRING-LOADED CONTACT PROBE 失效
公开(公告)号：JPS61196170A
公开(公告)日：1986-08-30
申请号：JP3636185
申请日：1985-02-27
申请人： HITACHI LTD
发明人： MIZUNO HIDEAKI , KOBAYASHI MITSURU
IPC分类号： G01R1/067
摘要： PURPOSE:To achieve a higher reliability, by providing a mechanism to turn a contact probe when brought into contact with an object to be inspected. CONSTITUTION:A contact probe 1 is held in a housing 3 being pushed by a spring 2, both ends of which 2 are connected securely to the end 4a of the contact probe at the point 4b of the bottom of the housing 3. The spring 2 herein suitable is a coil spring or the like. Now, when the housing 3 is fixed to press an object to be inspected, the rotary stress generated during the compression of the spring 2 is transmitted directly to the probe 1 to turn it. With the rotation, the contact part to be measured is wiped to ensure electric connection therebetween thereby obtaining a higher reliability.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式