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61. 发明专利

JPH05239582A 失效
公开(公告)号：JPH05239582A
公开(公告)日：1993-09-17
申请号：JP7611792
申请日：1992-02-26
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KONDO KATSUYOSHI , TAKEDA YOSHINOBU
IPC分类号： C22C1/04 , C22C21/00
摘要： PURPOSE:To provide an Al alloy having satisfactory mechanical strength even at high temp. CONSTITUTION:When an Al alloy is obtd. using powder consisting of 2-7.5% Fe and Ni in (9:11) to (11:9) ratio, 3-5% Cu, 0.5-1.5% Mg, 0.2-1% Mn and the balance Al and solidified by rapid cooling, the alloy powder as starting material is compacted, forged and subjected to T4 or T6 heat treatment, soln. heat treatment and age hardening. By the addition of Ni and Fe, the mechanical characteristics of the resulting Al alloy at such high temp. as 150-200 deg.C are improved.

62. 发明专利

JPH05125475A ALUMINUM ALLOY FOR PARTS TO BE IN CONTACT WITH MAGNETIC TAPE AND ITS PRODUCTION 失效
公开(公告)号：JPH05125475A
公开(公告)日：1993-05-21
申请号：JP28813791
申请日：1991-11-02
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： ITO YOSHIAKI , TAKEDA YOSHINOBU
IPC分类号： C22C1/04 , B22F5/00 , C22C21/02
摘要： PURPOSE:To improve wear resistance as compared with the case of the conventional aluminum alloy, to reduce the coefficient of thermal expansion, to increase the Young's modulus, and further to reduce weight. CONSTITUTION:An aluminum alloy used for material for the parts to be in contact with a magnetic tape is indicated. Silicon and impurities are contained in the aluminum alloy. Silicon is contained by 15- =180Hv.

63. 发明专利

JPH0533093A HIGH STRENGTH ALUMINUM ALLOY EXCELLENT IN WEAR RESISTANCE AND SLIDING PROPERTY 失效
公开(公告)号：JPH0533093A
公开(公告)日：1993-02-09
申请号：JP18887391
申请日：1991-07-29
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KONDO KATSUYOSHI , TAKEDA YOSHINOBU
IPC分类号： C22C1/04 , B22F5/00 , C22C21/00 , C22C21/02
摘要： PURPOSE:To provide an aluminum alloy for sliding parts having high strength and excellent in wear resistance, sliding properties by oil absorption and heat resistance. CONSTITUTION:Rapidly solidified aluminum alloy powder contg., by weight, 5 to 30% Si and 3 to 10% Fe or Ni or both by total

64. 发明专利

JPH04347385A SCROLL COMPRESSOR 失效
公开(公告)号：JPH04347385A
公开(公告)日：1992-12-02
申请号：JP12032891
申请日：1991-05-24
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HAYASHI TETSUYA , KAJI TOSHIHIKO , KONDO KATSUYOSHI , TAKEDA YOSHINOBU
IPC分类号： F04C18/02
摘要： PURPOSE:To keep off any seizure or binding due to co-chafing of two blade by having a moving blade and stationary blade both made of an aluminum alloy, and making one side blade with a power metal forging aluminum alloy and the other side with a melting cast aluminum alloy with a specific mean thermal expansion coefficient and a Young's modulus, respectively. CONSTITUTION:In a device which is made up of housing a rockingly rotating moving blade 2 formed into an involute curve and a static side stationary blade 3 in a compressor casing 1, one side blade is made of a powder metal forging aluminum alloy of more than HRB95 in hardness and the other side made of a melting casting Al-Si alloy of more than HRB70 in hardness and more than 16-20m10 / deg.C in a mean thermal expansion coefficient up to 150 deg.C from a conservatory and 8000kg/mm in a Young modulus. In this connection, the powder metal forging aluminum alloy consists of Fe, Ni, Fe+Ni:Zr+Ti+Mo+V, Cu, Mg. Mn and Si. The melting casting aluminum-Si alloy consists of Si, Cu, Mg and Mn.

65. 发明专利

JPH04325648A PRODUCTION OF SINTERED ALUMINUM ALLOY 失效
公开(公告)号：JPH04325648A
公开(公告)日：1992-11-16
申请号：JP12484691
申请日：1991-04-25
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HAYASHI TETSUYA , TAKEDA YOSHINOBU
IPC分类号： B22F1/00 , B22F3/10 , B22F9/08 , C22C1/04 , C22C21/02
摘要： PURPOSE:To produce a sintered aluminum alloy having high precision and high density, excellent in mechanical properties and physical properties, and also having superior wear resistance by means of normal pressure sintering while obviating the necessity of plastic working. CONSTITUTION:A molten metal which has a composition consisting of, by weight, 6.0-40.0% Si, 2.0-8.0% Cu, 0.2-2.0% Mg, and the balance essentially aluminum and further containing, if necessary, =10 deg.C/sec solidification rate. The resulting rapidly solidified aluminum alloy powder is subjected, if necessary, to annealing at 250-450 deg.C and then cold-compacted to >=70% density ratio. The resulting green compact is subjected to normal pressure sintering in a nonoxidizing atmosphere with =90% density ratio.

66. 发明专利

JPH04308050A PRODUCTION OF SINTERED ALUMINUM ALLOY REINFORCED BY DISPERSION 失效
公开(公告)号：JPH04308050A
公开(公告)日：1992-10-30
申请号：JP9808091
申请日：1991-04-03
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HAYASHI TETSUYA , TAKEDA YOSHINOBU
IPC分类号： C22C1/04 , C22C1/05 , C22C21/00
摘要： PURPOSE:To produce a sintered Al alloy reinforced by dispersion and having high mechanical strength and dimensional accuracy by conventional sintering without carrying out hot plastic working. CONSTITUTION:Composite Al alloy powder contg. 3-30vol.% reinforcing particles of =90% density ratio by heating at >=530 deg.C in vacuum or in an inert gaseous atmosphere having

67. 发明专利

JPH04193081A STATOR MEMBER OF ULTRASONIC MOTOR AND ITS MANUFACTURE 失效
公开(公告)号：JPH04193081A
公开(公告)日：1992-07-13
申请号：JP32665690
申请日：1990-11-27
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： ITO YOSHIAKI , TAKEDA YOSHINOBU
IPC分类号： B22F3/02 , B06B1/02 , B22F3/10 , B22F3/24 , C22C33/02 , C22C38/00 , C23C8/18 , H02N2/00
摘要： PURPOSE:To improve properties by making it contains a specified amount of carbon, and making the remainder substantially consist of iron, and putting the density above specific value in logical density ratio. CONSTITUTION:This consists of the material, which contains 0.4-1.0wt.% carbon and the remainder of which consists of iron, and the density of which is 90% or more in logical density ratio. The internal friction of iron drops suddenly if a small amount of carbon is added. And the content of carbon reaches the minimum value, and reaches approximately the same level as copper alloy currently in use. On the other hand, the conductivity drops with the increase of the content of the carbon, but the degree is relatively small. That is, the peculiar attenuation coefficient to oscillation of iron depends greatly on the quantity of carbon, and it becomes the minimum value at 0.6-0.8wt.%. Moreover, as a stator member, it is to be desired that the logical density ratio should be 94% or more. Because the cavity existing inside not only increase internal friction but also lowers the thermal conductivity.

68. 发明专利

JPH03267355A ALUMINUM-CHROMIUM ALLOY AND ITS PRODUCTION 失效
公开(公告)号：JPH03267355A
公开(公告)日：1991-11-28
申请号：JP6565090
申请日：1990-03-15
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KOBAYASHI KOUJIROU , TAKEDA YOSHINOBU
IPC分类号： C22F1/04 , B22F1/00 , B22F3/00 , B22F9/00 , C22C1/04 , C22C45/08 , C22F1/00
摘要： PURPOSE:To produce the alloy excellent in strength, heat resistance, and corrosion resistance by preparing an amorphous Al-Cr alloy having a composition which contains specific percentages of Cr and Fe and in which the total content of Cr and Fe is controlled. CONSTITUTION:An alloy having a composition which consists of, by atomic fraction, 10-25% Cr, 0.1-5.0% Fe and/or Ni, and the balance essentially Al and in which the total content of Cr and Fe and/or Ni is regulated to

69. 发明专利

JPH0348153B2 失效
公开(公告)号：JPH0348153B2
公开(公告)日：1991-07-23
申请号：JP27916285
申请日：1985-12-13
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： YAMAKAWA AKIRA , MYAKE MASAYA , TAKEDA YOSHINOBU
IPC分类号： C04B35/48

70. 发明专利

JPH03130349A FERROUS SINTERED PARTS MATERIAL EXCELLENT IN FATIGUE STRENGTH AND ITS PRODUCTION 失效
公开(公告)号：JPH03130349A
公开(公告)日：1991-06-04
申请号：JP16244989
申请日：1989-06-24
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： ITO YOSHIAKI , MOTOOKA NAOKI , TAKEDA YOSHINOBU
IPC分类号： C22C33/02 , C21D7/06 , C22C38/00 , C22C38/50
摘要： PURPOSE:To produce a ferrous sintered member excellent in fatigue strength by compacting a powder of a low alloy steel with a specific composition, sintering the resulting green compact in a nonoxidizing atmosphere, and subjecting the resulting sintered compact to heat treatment and to shot peening treatment. CONSTITUTION:A powder of a low alloy steel having a composition containing, by weight, 0.5-10%, in total, of one or >=2 elements selected from a group consisting of Mo, Cr, Ni, Mn, Cu, Nb, V, Ti, and C is compacted into the desired shape so as to be formed into a green compact having a density of 85-95% of the theoretical density, and this green compact is sintered in a nonoxidizing atmosphere at 1150-1350 deg.C. After heat-treating the resulting sintered compact, shot peening treatment is applied to the surface of the sintered compact to make the surface dense. By this method the ferrous sintered member which has a three-layered surface layer in which densities, compressive residual stresses, and Vickers hardness in a surface primary, a secondary, and a tertiary layer are regulated to >=95%, >=93%, and 88-95% based on the theoretical densities, to 50-120kg/mm , , and , and to 600-900, 500-800, and 500-800, respectively, in the order named and also has superior fatigue strength can be produced.

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