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91. 发明专利

JPH01232031A ALUMINUM ALLOY-STAINLESS STEEL COMPOSITE MATERIAL 失效
公开(公告)号：JPH01232031A
公开(公告)日：1989-09-18
申请号：JP5977788
申请日：1988-03-14
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： TAKEDA YOSHINOBU , HAYASHI TETSUYA
IPC分类号： B32B15/01
摘要： PURPOSE:To prevent peeling on a bonding interface when aluminum alloy and stainless steel are bonded and integrated by using said alloy and steel having 2X10 / deg.K or less of difference of thermal expansion coefficient between them and 9X10 kg/mm or more of the Young's modulus of aluminum alloy. CONSTITUTION:When aluminum alloy and stainless steel are bonded and integrated, aluminum alloy and stainless steel having 2X10 / deg.K or less of thermal expansion coefficient and 9X10 kg/mm or more of the Young's modulus of aluminum alloy are used. The peeling at the time of bonding interface of aluminum alloy and stainless steel can be prevented by said arrangement, and also rigidity in the aluminum alloy section can be increased.

92. 发明专利

JPH0693303A PRODUCTION OF FORGED ALUMINUM POWDER 失效
公开(公告)号：JPH0693303A
公开(公告)日：1994-04-05
申请号：JP24313292
申请日：1992-09-11
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KAJI TOSHIHIKO , TAKEDA YOSHINOBU , KOTANI YUSUKE , HAYASHI TETSUYA
IPC分类号： B22F3/02 , B22F3/035 , B22F3/17 , B22F3/20
摘要： PURPOSE:To prevent the cracking and ununiforming of density of the tip of a protrusion due to extrusion molding and increase the strength in the production of forget aluminum powders having the relatively long protrusion. CONSTITUTION:Aluminum alloy powders or their mixed powders as they are or the heated green compact of the powder are filled in a forging die, a back pressure is exerted on the tip of the extruded part of the extrusion-molded body in an opposite direction to the extruding direction of the extruded part, and the powder or green compact is pressed, sintered and forged. A first back pressure is exerted in the initial stage of forging, the back pressure is then instantaneously lowered, and a second back pressure lower than the first back pressure is applied in the final stage of forging.

93. 发明专利

JPH04308002A COMPOSITE ALUMINUM ALLOY POWDER SINTERABLE UNDER ORDINARY PRESSURE AND PRODUCTION THEREOF 失效
公开(公告)号：JPH04308002A
公开(公告)日：1992-10-30
申请号：JP9808191
申请日：1991-04-03
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HAYASHI TETSUYA , TAKEDA YOSHINOBU
IPC分类号： B22F1/00 , B22F9/08
摘要： PURPOSE:To produce composite Al alloy powder sinterable under ordinary pressure and capable of giving a sintered Al alloy reinforced by dispersion and having high mechanical strength and dimensional accuracy by conventional sintering under ordinary pressure without carrying out hot plastic working. CONSTITUTION:This composite Al alloy powder sinterable under ordinary pressure contains 3-30vol.% reinforcing particles of

94. 发明专利

JPH04183839A HYPEREUTECTIC ALUMINUM-SILICON POWDER METALLURGICAL ALLOY 失效
公开(公告)号：JPH04183839A
公开(公告)日：1992-06-30
申请号：JP31092890
申请日：1990-11-16
申请人： SUMITOMO ELECTRIC INDUSTRIES , TOYO ALUMINIUM KK
发明人： TAKEDA YOSHINOBU , HAYASHI TETSUYA , KAJI TOSHIHIKO
IPC分类号： C22C21/02
摘要： PURPOSE:To improve the mechanical properties of a hypereutectic Al-Si powder metallurgical alloy by specifying the total content of P, which is allowed to enter into solid solution in an Al solid-solution matrix, and P contained in an Si crystal. CONSTITUTION:P is added to a molten Al alloy having 12-45%, by weight, of Si content by 5.5-80ppm and this molten alloy is subjected to rapid solidification, by which a hypereutectic Al-Si powder metallurgical alloy in which Al solid-solution matrix is subjected to solid-solution strengthening with P is formed. The total P content of P, which is allowed to enter into solid solution in the above Al solid-solution matrix, and P contained in an Si crystal is regulated to 10-130ppm. By subjecting the Al matrix to solid-solution strengthening with P, the hypereutectic Al-Si powder metallurgical alloy excellent in strength and toughness can be obtained while obviating the necessity of precisely controlling the grain size of the Si crystal.

95. 发明专利

JPH0364424A MANUFACTURE OF ALUMINUM-SILICON-GRAPHITE ALLOY 失效
公开(公告)号：JPH0364424A
公开(公告)日：1991-03-19
申请号：JP19996889
申请日：1989-07-31
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： TAKEDA YOSHINOBU , KOTANI YUSUKE , HAYASHI TETSUYA , KAJI TOSHIHIKO , ITO YOSHIAKI
IPC分类号： C22C1/10 , C22C21/02
摘要： PURPOSE:To manufacture the Al-Si-graphite alloy of which the grains of graphite and metallic Si are uniformly dispersed into an Al alloy matrix by injecting Al alloy molten metal on the surface of a rotatable supporting stand together with heated graphite powder and metallic Si powder and exeucting solidification. CONSTITUTION:Molten Al alloy is injected on the surface of a supporting stand 6 rotating or rocking in an injection chamber 7 from an injection nozzle 2 of an Al alloy melting and injection device 1. At the same time, graphite grains 13 and metallic Si grains 12 heated to a high temp. is injected thereon from an injection device 3 for Si grains and graphite grains. The injected Al alloy grains 11 as well as the metallic Si grains 12 and the graphite grains 13 are piled on the supporting stand 6 and are rapidly solidified, by which, without forming brittle compounds such as Al3C4 by the reaction of the Al alloy with the graphite, the Al-Si-graphite series alloy of which the fine grains of the metallic Si and graphite are uniformly dispersed into the Al alloy matrix and having high strength, high rigidity and a low thermal expansion coefficient as well as having excellent seizure resistance, sliding properties and wear resistance can be manufactured.

96. 发明专利

JPH01290705A ROLL FORMING METHOD OF POWDER AND ROLLING ROLL FOR POWDER ROLL FORMING 失效
公开(公告)号：JPH01290705A
公开(公告)日：1989-11-22
申请号：JP11884588
申请日：1988-05-16
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HAYASHI TETSUYA , TAKEDA YOSHINOBU
IPC分类号： B28B3/12 , B22F3/02 , B22F3/18
摘要： PURPOSE:To easily obtain a sheet-shaped formed product which has a high density and is uniform by providing porous bodies having communicating vent holes to roll surfaces and roll forming powder to a sheet shape, and simultaneously discharging the binder in the powder through the porous bodies. CONSTITUTION:The porous bodies 3 consisting of a tool steel, etc., are respectively provided over the entire surface of two pieces of the rolling rolls 2 which come into contact with the powder 1. The plural communicating holes 4 extending from the rear surfaces of the respective porous bodies 3 to the axial centers of the rolling rolls 2 are provided. Large-diameter communicating holes 4' which gather the respective holes 4 and guide the same to the outside of the rolls are pierced. The alloy powder 1 mixed with the binder is rolled and molded by using such rolling rolls 2 and is thereby made into the sheet shape. The binder contained in the powder 1 is partly discharged to the outside through the porous bodies 3 and the communicating holes 4, 4' simultaneously with roll forming. The recovered binder is reused. The sheet-shaped formed product which has the high density and is uniform is thereby obtd.

97. 发明专利

JPH01287203A METHOD FOR COMPACTING POWDER AND MOLD FOR COMPACTING POWDER 失效
公开(公告)号：JPH01287203A
公开(公告)日：1989-11-17
申请号：JP11629188
申请日：1988-05-13
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HAYASHI TETSUYA , TAKEDA YOSHINOBU
IPC分类号： B30B11/00 , B22F3/02 , B22F3/035 , B28B3/02
摘要： PURPOSE:To simply form a green compact having high dimensional accuracy, high density and uniformity at a low cost by packing powder mixing with binder into dies communicated to outside through communicated gas holes by arranging porous bodies on inner surface and compacting with compression. CONSTITUTION:The powder 1 is packed on a lower punch 4 in outer die 2 and an upper punch 3 is descended from upper part and the powder 1 is compacted with compression between both punched 3, 3. In the die for compacting the above powder, the porous bodies 5 having the communicated gas holes 6 are arranged at least at a part, desirably >= about 20% of the inner surface of the die brought into contact with the powder 1 at the time of completing compacting. The porous body 5 is commu nicated with outside air of the die through the communicated holes 6. Further, the binder of wax series, etc. is mixed to the packed powder 1. At the time of compacting this powder with compressing, a part of this binder is exhausted to remove to outside of the dies through the porous bodies 5, By this constitution, the uniform green compact having high dimensional accuracy and high density is obtd. The green compact has a little binder content and after that, deterioration of size accuracy is restrained and de-binder treatment can be executed for a short time.

98. 发明专利

JPS62211305A ALUMINUM ALLOY-BASE COMPOSITE STRUCTURE AND ITS PRODUCTION 失效
公开(公告)号：JPS62211305A
公开(公告)日：1987-09-17
申请号：JP5316186
申请日：1986-03-11
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HAYASHI TETSUYA , MOTOOKA NAOKI , TAKEDA YOSHINOBU
IPC分类号： B21K25/00 , B22F3/02 , B22F3/17 , B22F7/08
摘要： PURPOSE:To provide composite strength not obtd. by a conventional method to an Al alloy-base composite structure requiring partially wear resistance and toughness by carrying out combining by forging. CONSTITUTION:An Al alloy-base composite structure is obtd. by mechanically combining an iron alloy or ceramics with an Al alloy by forging without carrying out diffusion. When the structure is produced, Al alloy powder is fed into a die packed with the iron alloy or ceramics as a material to be combined and compacting, forging and combining are simultaneously carried out.

99. 发明专利

JP2517732B2 失效
公开(公告)号：JP2517732B2
公开(公告)日：1996-07-24
申请号：JP24846487
申请日：1987-09-30
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： FUJIWARA TOSHIO , INOE KATSUMI , HAYASHI TETSUYA
IPC分类号： B21C35/02

100. 发明专利

JP2509052B2 失效
公开(公告)号：JP2509052B2
公开(公告)日：1996-06-19
申请号：JP20022692
申请日：1992-07-02
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HAYASHI TETSUYA , TAKEDA YOSHINOBU
IPC分类号： B22F3/10 , B22F9/08 , C22C1/05 , C22C1/10 , C22C21/06

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