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1. 发明专利

DE69522792T2 未知
公开(公告)号：DE69522792T2
公开(公告)日：2002-05-29
申请号：DE69522792
申请日：1995-01-17
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HAYASHI TETSUYA , TAKEDA YOSHINOBU
IPC分类号： B22F1/00 , B22F3/24 , C21D1/19 , C21D8/00 , C22C33/02 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/10 , C22C38/12 , C22C38/16 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/30 , C22C38/38 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/52 , C22C38/58
摘要： A process for producing a heat-treated sintered iron alloy part, the process comprising: austenizing an iron-based sinter having a martensitic transformation initiation point (Ms point) of from 50 to 350 DEG C, at a temperature not lower than the austenizing temperature (Ae1 point) of the sinter; quenching the austenized sinter at a cooling rate at which martensitic transformation occurs; and sizing or coining the quenched sinter at the time when the temperature of the sinter which is being quenched has reached the temperature range of from the Ms point to the Ae1 point.

2. 发明专利

DE69426925D1 未知
公开(公告)号：DE69426925D1
公开(公告)日：2001-04-26
申请号：DE69426925
申请日：1994-12-12
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： SHIGA RYUJI , TAKANO YOSHISHIGE , TAKEDA YOSHINOBU
IPC分类号： B65G65/44 , B22F3/00 , B22F3/02 , B22F3/035 , B30B11/00 , B30B15/02 , B30B15/30 , B30B11/02
摘要： This invention provides a molding method capable of filling a cavity of a metal mold for compression molding with powder uniformly and at high density, and providing an excellent powder molded product with little variations of density. A powder feeding shoe box (12) is moved toward a cavity (6) of a metal mold (1), and, simultaneously, vibration is applied to the powder feeding shoe box (12), whereby the cavity (6) is filled with the powder. After the packing density of the powder in the cavity (6) has been set not less than 1.1 times as high as an apparent density thereof, the powder is compression molded.

3. 发明专利

DE69326290D1 未知
公开(公告)号：DE69326290D1
公开(公告)日：1999-10-14
申请号：DE69326290
申请日：1993-06-29
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KONDOH KATSUYOSHI , TAKEDA YOSHINOBU
IPC分类号： F04C15/00 , C22C1/04 , C22C21/02 , C22C45/08 , F04C2/08 , F04C2/10 , F04C18/063 , F04C18/10 , C22C21/04
摘要： An oil pump comprises a casing of aluminum alloy and at least one rotor housed therein. The rotor is produced by powder metallurgical with a rapidly solidified aluminum alloy comprising, by weight, of 5 to 25 % of Si, up to 15 % of one or more alloy elements selected from the group consisting of 3 to 10 % of Fe, 3 to 10 % of Ni and 1 to 8 % of Cr, and the balance of Al and inevitable impurities. The casing may be produced by powder metallurgy or ingot metallurgy with an aluminum alloy consisting essentially, by weight, of 5 to 25 %, preferably 5 to 17 %, of Si, 1 to 5 % of Cu, 0.2 to 1.5 % of Mg, 0.2 to 1 % of Mn, and the balance of Al and inevitable impurities. The rotor and casing are so combined that the sum of the Si content of said rapidly solidified aluminum alloy for casing and that of said rapidly solidified aluminum alloy for rotor being equal to or more than 15 percent by weight.

4. 发明专利

DE69315492T2 未知
公开(公告)号：DE69315492T2
公开(公告)日：1998-04-02
申请号：DE69315492
申请日：1993-07-02
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HAYASHI TETSUYA , TAKEDA YOSHINOBU
IPC分类号： B22F3/10 , C22C32/00 , C22C1/04
摘要： The invention provides aluminum sintered alloys with high dimensional accuracy and high density which are superior in mechanical and physical characteristics as well as wear resistance, and a method of producing such alloys not by plastic working but by atmospheric sintering with high economy. Rapidly solidified aluminum alloy powder resulting from solidifying aluminum alloy molten metal containing 0.4 to 4.0% by weight of Mg at a solidification rate of 10 DEG C/sec or more is press molded in the cold, after annealing in the temperature range of 250 to 450 DEG C if necessary, and then the molded product is sintered by generating nitrogen compounds on the powder surface at atmospheric pressure with a nitrogen partial pressure of 0.8 atm or more and a steam partial pressure of 0.01 atm or less in which a reducing gas component has been added as a nitrogen-combining acceleration gas component by 0.01 atm or more. Thus, a nitrogen-combined aluminum sintered alloy containing 0.4 to 4.0% by weight and 0.2 to 4.0% by weight of nitrogen is obtained.

5. 发明专利

DE69402277T2 未知
公开(公告)号：DE69402277T2
公开(公告)日：1997-07-10
申请号：DE69402277
申请日：1994-08-19
申请人： HONDA MOTOR CO LTD , SUMITOMO ELECTRIC INDUSTRIES
发明人： OKAMOTO KENJI , HORIMURA HIROYUKI , MINEMI MASAHIKO , TAKEDA YOSHINOBU , TAKANO YOSHISHIGE , KAJI TOSHIHIKO
IPC分类号： B22F3/17 , C22C1/04 , C22C21/00 , F16C9/04 , F16J7/00 , B22F3/20 , B22F5/00 , C22C21/02

6. 发明专利

DE69400851T2 未知
公开(公告)号：DE69400851T2
公开(公告)日：1997-03-06
申请号：DE69400851
申请日：1994-08-01
申请人： HONDA MOTOR CO LTD , SUMITOMO ELECTRIC INDUSTRIES
发明人： HORIMURA HIROYUKI , OKAMOTO KENJI , MINEMI MASAHIKO , KAJI TOSHIHIKO , TAKANO YOSHISHIGE , TAKEDA YOSHINOBU
IPC分类号： B22F3/02 , B22F3/17 , C22C1/04 , C22C21/00 , C22C45/08 , C22F1/00 , C22F1/04 , B22F3/16 , B21J5/00
摘要： Either aluminum alloy powder or a green compact thereof is prepared wherein: (1) the composition formula is A l 100-a-bFeaXb where a and b in atomic % are 4.0

7. 发明专利

DE69120299D1 未知
公开(公告)号：DE69120299D1
公开(公告)日：1996-07-18
申请号：DE69120299
申请日：1991-10-31
申请人： SUMITOMO ELECTRIC INDUSTRIES , TOYO ALUMINIUM KK
发明人： TAKEDA YOSHINOBU , HAYASHI TETSUYA , KAJI TOSHIHIKO , ODANI YUSUKE , AKECHI KIYOAKI
IPC分类号： C22C1/04 , B22F1/00 , B22F9/08

8. 发明专利

AU527983B2 MAKING SHAPES BY POWDER METALLURGY 未知
公开(公告)号：AU527983B2
公开(公告)日：1983-03-31
申请号：AU5123079
申请日：1979-09-26
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： TAKEDA YOSHINOBU , NOJI SUSUMU , KUROISHI NOBUHITO
IPC分类号： B22F3/14 , B22F3/24 , C22C33/02 , B22F5/08 , B22F9/04
摘要： A method for producing a powder forged material comprising 1.4 DIFFERENCE 3.5% Si, 0.2 DIFFERENCE 0.9% Mn and 1.0 DIFFERENCE 2.0% C by weight, the remainder substantially consisting of iron is provided herein. This method consists in (a) pulverizing the swarf of an FCD cast iron mother material and separating and removing graphite microparticles from the mother material to produce a powder body of said mother material having a carbon content of 1.0 DIFFERENCE 2.5%; (b) preforming the powder body having the reduced carbon content to a density lower than that of the mother material and applying a lubricant to the preformed body; (c) heating the preformed body at a temperature above the melting point of the mother material but below 1300 DEG C. in a non-carburizing atmosphere and then cooling the preformed body until the temperature of the body is lowered to 1000 DEG DIFFERENCE 1100 DEG C. and forging the preformed body in a dye so that the specific gravity is the same or slightly higher than that of the mother material and, finally, (d) subjecting the forged body to a diffusion treatment by heating it above the austenitizing temperature. The present invention also relates to forged materials produced by this method.

9. 发明专利

DE19924219A1 Powder metallurgical starting material especially for producing aluminum oxide dispersion strengthened aluminum composite material used e.g. for engine and machine parts 未知
公开(公告)号：DE19924219A1
公开(公告)日：1999-12-02
申请号：DE19924219
申请日：1999-05-27
申请人： TOYO ALUMINIUM KK , HONDA MOTOR CO LTD , SUMITOMO ELECTRIC INDUSTRIES
发明人： KUSUI JUN , YOKOE KAZUHIKO , FUJII KAZUO , TAKAHASHI KYO , DOI KOSUKE , HORIMURA HIROYUKI , HATTORI HISAO , KAJI TOSHIHIKO , TAKEDA YOSHINOBU , YAMADA KOJI
IPC分类号： B22F1/00 , C22C1/05 , C22C1/10 , C22C21/00 , C22C32/00
摘要： A powder metallurgical starting material, comprising aluminum alloy powder and a small amount of aluminum oxide powder of specified particle size, is new. A powder metallurgical starting material contains 0.5-10 vol. % aluminum oxide powder, \}0.01 wt. % of which is of \- 30 microns size, and balance aluminum alloy powder. An Independent claim is also included for a powder metallurgical starting material production process which comprises dry ball milling of an aluminum alloy powder with an air classified aluminum oxide powder.

10. 发明专利

DE69314438D1 未知
公开(公告)号：DE69314438D1
公开(公告)日：1997-11-13
申请号：DE69314438
申请日：1993-11-29
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： ITOH YOSHIAKI , ITO KOZO , TAKEDA YOSHINOBU
IPC分类号： C21D1/18 , C22C33/02 , F16C33/62 , C22C38/00
摘要： A low alloy sintered steel contains at least 0.15 percent by weight and less than 0.8 percent by weight of carbon. Its matrix is formed by a tempered martensite containing prior austenite crystal grains of not more than 15 mu m in mean grain size. Pores and nonmetallic inclusions contained in the matrix are not more than 50 mu m in maximum diameter, and density of the low alloy sintered steel is at least 96 percent of theoretical density. Raw material powder for the low alloy sintered steel includes iron alloy powder which is prepared by an atomizing process, and is treated with a dry mill in an inert gas atmosphere or in the atmospheric air. Thus, dislocations are introduced into the raw material powder, and nonmetallic inclusions contained in the raw material powder are pulverized to be not more than 50 mu m in maximum diameter. Not only static characteristics but dynamic characteristics such as fatigue strength of the low alloy sintered steel are improved.

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