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21. 发明专利

JPH0621311B2 失效
公开(公告)号：JPH0621311B2
公开(公告)日：1994-03-23
申请号：JP9648790
申请日：1990-04-13
申请人： SUMITOMO LIGHT METAL IND
发明人： OOKUBO YOSHIMASA , KIKUCHI AKIO
IPC分类号： C22C21/12 , C22C1/10 , C22C29/02 , C22C29/06 , C22C29/12 , C22C29/16 , C22C32/00

22. 发明专利

JPH0641656A PRODUCTION OF GRANULAR DISPERSION METAL BASE COMPOSITE 失效
公开(公告)号：JPH0641656A
公开(公告)日：1994-02-15
申请号：JP21630992
申请日：1992-07-22
申请人： TOYOTA MOTOR CORP , SUMITOMO LIGHT METAL IND
发明人： MORI TOSHIHIRO , SUDO SHUNTARO , KIKUCHI AKIO , OKUBO YOSHIMASA
IPC分类号： B22F1/00 , C22C1/05
摘要： PURPOSE:To produce a metal base composite with uniformly dispersed hard grains by classifying metal powder into plural classes, mixing the metal powder with the hard grains starting from the small grain diameter class toward the larger diameter class in order and hot-caking, when the herd grains of a small diameter are mixed with the matrix metal powder having a larger diameter. CONSTITUTION:The hard grains B having 10mu or small average grain diameter and the matrix metal powder A having larger average grain diameter than the hard grains, are mixed and hot-caked to produce the grain dispersed metal base composite. Then, the metal powder A is classified into A1, A2...An and at first, the metal powder A1 having the smallest grain diameter (the max. grain diameter is 13 or less times of the hard grains) is mixed with the hard grains B in the dry condition, and with this mixed powder C1, the metal powder A2 having the successively smallest grain diameter is mixed in the dry condition. In such a way, until the metal powder An having the largest grain diameter is mixed with the mixed powder in the dry condition in order, and the mixed powder Cn is hot-caked to a prescribed shape to produce the granular dispersion metal base composite having >=-0.5 or a larger dispersion degree D. By this method, the high performance of the composite having excellent strength and cold forgability is obtd.

23. 发明专利

JPH02101125A MANUFACTURE OF ALUMINUM ALLOY EXCELLENT IN TENSILE STRENGTH AND FATIGUE STRENGTH 失效
公开(公告)号：JPH02101125A
公开(公告)日：1990-04-12
申请号：JP25194088
申请日：1988-10-07
申请人： SUMITOMO LIGHT METAL IND
发明人： YAMAUCHI SHIGENORI , SHIBUE KAZUHISA , OKUBO YOSHIMASA , NISHIMURA YOSHIHIKO , KIKUCHI AKIO , FUKUDA YASUHIRO
IPC分类号： B22F9/08 , B22F3/20 , B22F5/00 , C22C1/04 , C22C21/02
摘要： PURPOSE:To manufacture an Al alloy having high toughness and excellent in tensile strength and fatigue strength by melting an alloy material having a specific composition consisting of Si, Fe, Cu, Mg, Ti, and Al or further containing Mn, rapidly cooling the resulting molten alloy to solidify it into a powder, and then treating the above powder at a specific temp. CONSTITUTION:An alloy material having a composition which consists of, by weight, 15.5-18.5% Si, 4-7% Fe, 1-6% Cu, 0.3-3% Mg, 0.01-2% Ti, and the balance Al with inevitable impurities or further contains 0.3-3% Mn and in which the total content of Fe and Mn is regulated to =4 extrusion ratio at 300-500 deg.C. The Al alloy in which mutual powder grains are bound together, by means of the resulting metal flow is hot-forged into the desired shape, followed by heat treatment, such as solution heat treatment, hardening, and tempering. By this method, the Al alloy excellent in tensile strength and fatigue strength can be obtained.

24. 发明专利

JPH10175081A MANUFACTURE OF ALUMINUM ALLOY CLAD MATERIAL 失效
公开(公告)号：JPH10175081A
公开(公告)日：1998-06-30
申请号：JP35323996
申请日：1996-12-16
申请人： SUMITOMO LIGHT METAL IND
发明人： OKUBO YOSHIMASA , SHIBUE KAZUHISA , KIKUCHI AKIO
IPC分类号： B23K20/00 , B22F3/00 , B23K103/10 , C22C1/04 , C22F1/00
摘要： PROBLEM TO BE SOLVED: To obtain an aluminum alloy clad material provided with a sound joint surface and an excellent strength property by holding a clad surface at a specific temperature for a specific time with a high pressure applied to the surface before thermal refining. SOLUTION: In the method in which an aluminum alloy material requiring thermal refining accompanied with a solution heat treatment is clad with another aluminum alloy material having a different composition and refined to produce a clad material, the clad surface is held at 480 deg.C or higher for 30 minutes or longer with a high pressure applied to the surface before the thermal refining. The high pressure load can be applied by a HIP (high temperature hydraulic pressure press) processing or a hot press processing for applying a vertical pressure to the clad surface, for which the former is used appropriately. As a result, diffusion of solute elements progresses through the clad surface, with the gradient of a chemical potential made sufficiently gentle on the clad surface, and with the generation of pores suppressed through a synergetic effect by the high pressure load.

25. 发明专利

JPH10140213A PRODUCTION OF BRAKE DISK FOR RAILWAY CAR 失效
公开(公告)号：JPH10140213A
公开(公告)日：1998-05-26
申请号：JP29684996
申请日：1996-11-08
申请人： SUMITOMO METAL IND , SUMITOMO LIGHT METAL IND
发明人： SAKAGUCHI TOKUJI , MAKINO TAIZO , AZUMAGUCHI YOJI , FURUYA SEIICHI , OKUBO YOSHIMASA , EZAKI HIROKI , TOKIZANE NAOKI , KIKUCHI AKIO
IPC分类号： F16D65/12 , B22F3/02 , B22F3/14 , B22F3/15 , B22F3/17 , B22F5/00 , C22C1/05
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacture of a brake disk constituted of an aluminum matrix composite, in which weight is reduced and strength is increased and which has characteristics of wear resistance, heat resistance, and resistance to heat check, equal to those of the conventional one made of steel. SOLUTION: The brake disk for railway car is produced by constituting it of an aluminum matrix composite prepared by inserting a powder mixture of aluminum alloy and ceramics into a hermetically sealed can, performing high temp. pressing treatment, and then carrying out forging. At this time, the hermetically sealed can is not removed after high temp. pressing treatment, and forging is performed in a state where the powder mixture is sealed in.

26. 发明专利

JPH1036983A SLIDING MATERIAL 失效
公开(公告)号：JPH1036983A
公开(公告)日：1998-02-10
申请号：JP19364496
申请日：1996-07-23
申请人： SUMITOMO LIGHT METAL IND , CANON KK
发明人： MARUYAMA YUTAKA , KITANI KOJI , KIKUCHI AKIO , OKUBO YOSHIMASA
IPC分类号： C23F1/00 , C22C21/02 , C23F1/36
摘要： PROBLEM TO BE SOLVED: To improve the wear resistance of a sliding material and to obtain a good friction sliding face by smoothen the surface of an Al-Si alloy produced by powder metallurgy, thereafter etching the Al part and projecting the Si grains. SOLUTION: The surface of an Al-Si alloy produced by powder metallurgy using rapidly solidified power is worked to be smooth. Next, the Al alloy part in the alloy surface is removed by etching to project only the Si grains, and this face is used as a sliding face. As for the Al alloy part, preferably, about 0.2 to 2μm from the surface is removed. The average grain size of the Si grains in the Al-Si alloy to be subjected to etching treatment is preferably regulated to about 2 to 6μm. In the alloy, the content of Si is preferably regulated to 20 to 40wt.%. Cu, Mg, Fe, Ni and inorganic matters are contained in the Al alloy part. There are hand Si grains in the surface of this sliding material, and wear in the Al alloy part is hard to occur.

27. 发明专利

JPH0887791A PRODUCTION OF HEAD DRUM 失效
公开(公告)号：JPH0887791A
公开(公告)日：1996-04-02
申请号：JP24692394
申请日：1994-09-13
申请人： SONY CORP , SUMITOMO LIGHT METAL IND
发明人： OGASAWARA JUNICHI , HIRAFUNE YASUHIRO , KIKUCHI AKIO , OKUBO YOSHIMASA
IPC分类号： B21K23/00 , B30B11/00 , G11B15/61
摘要： PURPOSE: To obtain a process for producing a head drum capable of forming a head drum having sufficient wear resistance on its outer peripheral surface and improving the workability of inner parts with simple stages. CONSTITUTION: This process includes an outer peripheral material molding stage for molding the outer peripheral material by packing a powder material 22 to the circumference of a core material 24 in a pressure vessel and rapidly solidifying this material by cold compression molding. Further, the process includes a head drum blank shape molding stage for molding a head drum blank shape 25 by subjecting the core material 24 and the outer peripheral material to hot forging in hermetic metal molds.

28. 发明专利

JPH07139542A SCREW ROTOR PART AND MANUFACTURE OF SCREW 失效
公开(公告)号：JPH07139542A
公开(公告)日：1995-05-30
申请号：JP28523693
申请日：1993-11-15
申请人： SUMITOMO METAL IND , SUMITOMO LIGHT METAL IND
发明人： KURODA KOICHI , NAKASUJI KAZUYUKI , KIKUCHI AKIO , OTANI MAKOTO
IPC分类号： F16C15/00 , B21H3/00 , B22F5/00 , B22F5/08
摘要： PURPOSE:To provide a screw performance and yield of which can be improved, and manufacture thereof. CONSTITUTION:A blade part 2 made of aluminum alloy formed with helical projections is provided on the outer circumference of a shaft 1 (coefficient of linear expansion 17X10 / deg.C) made of stainless steel (SUS304) material of diameter 20-40mm. The blade part 2 is a clad composed of two layers, an inner layer material 2a (coefficient of linear expansion 16-17.5X10 / deg.C) made of powder alloy of low hot working adaptability, and an outer layer material 2b (coefficient of linear expansion 20X10 / deg.C) made of melt alloy of high hot working adaptability. When the thickness of the inner layer material 2a is set more than 3mm, it is easy to hold the strength due to shrinkage fiting. If the inner layer material 2a occupies from the center of projection height to the outside, the possibility generating a crack at hot rolling is increased. Considering the hot working adaptability at rolling, it is favorable that the inner layer material 2a is formed so as not to appeare on the surface.

29. 发明专利

JPH06349163A PRODUCTION OF HEAD DRUM 失效
公开(公告)号：JPH06349163A
公开(公告)日：1994-12-22
申请号：JP16394093
申请日：1993-06-07
申请人： SONY CORP , SUMITOMO LIGHT METAL IND
发明人： HIRAFUNE YASUHIRO , KIKUCHI AKIO , OKUBO YOSHIMASA
IPC分类号： G11B15/61
摘要： PURPOSE:To make it possible to mold a thin disk obtd. by cold compression molding of light alloy powder to a shape approximate to the final shape and to decrease cutting allowances by forging this thin disk while heating the disk within a hermetically closed metal mold. CONSTITUTION:The powder light alloy to be used is made of a compsn. consisting of 15 to 35wt.% Si, 0.5 to 6wt.% Cu, 0.3 to 5.0wt.% Mg and the balance aluminum. The raw material having the compsn. described above is put into a crucible 40 and is melted by heating. The molten aluminum alloy is led out of a nozzle 41 at the bottom end of the crucible 40 and is blown off by an inert gas, by which the alloy powder is obtd. The resulted alloy powder is packed into a rubber container 45 and this container 45 is housed into a steel pressure vessel 46. Water is injected into the vessel from an injection port 47 and the inside of the vessel 46 is pressurized, by which the powder is cold compression molded and the thin disk 50 is obtd. The disk 50 is then arranged on a bottom plate 52 of the metal mold 51 for forging and is heated. The disk 50 arranged on the bottom plate 52 is pressurized by a punch 54 disposed at the front end of a rod 53, by which the closed die forging is executed.

30. 发明专利

JPH05222409A HEAT TREATMENT OF AL POWDER ALLOY 失效
公开(公告)号：JPH05222409A
公开(公告)日：1993-08-31
申请号：JP2275992
申请日：1992-02-07
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV , SUMITOMO LIGHT METAL IND
发明人： SUDO SHUNTARO , KONDO MIKIO , ITO KAZUHIKO , ISHIHARA SATORU , OKUBO YOSHIMASA , SANO HIDEO , KIKUCHI AKIO
IPC分类号： B22F3/24 , C22C21/00 , C22F1/00 , C22F1/057
摘要： PURPOSE:To provide the method for heat treatment of an Al powder alloy which can yield the Al powder alloy having excellent fatigue strength. CONSTITUTION:The Al-Cu-Mg Al powder alloy for the precipitation hardening heat treatment having

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