Engine cylinder liners based on aluminum alloys and intermetallic compounds, and methods of obtaining them
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0557947
(1983-12-05)
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우선권정보 |
FR-0020983 (1982-12-09) |
발명자
/ 주소 |
- Eudier, Michel
- Huret, Noel
- Meunier, Jean
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출원인 / 주소 |
- Cegedur Societe de Transformation de L'Aluminim Pechiney, Alliages Frittes METAFRAM
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대리인 / 주소 |
Dennison, Meserole, Pollack & Scheiner
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인용정보 |
피인용 횟수 :
10 인용 특허 :
5 |
초록
▼
The invention relates to cylinder liners for internal combustion engines comprising a matrix based on aluminum alloys of high mechanical strength, obtained by powder metallurgy, and methods of producing them. The liners comprise a dispersion of grains of an added intermetallic compound, apart from t
The invention relates to cylinder liners for internal combustion engines comprising a matrix based on aluminum alloys of high mechanical strength, obtained by powder metallurgy, and methods of producing them. The liners comprise a dispersion of grains of an added intermetallic compound, apart from the dispersion of such intermetallic compounds as may exist in the alloy, the added compound having a melting temperature of over 700° C. The liners are obtained by extruding or sintering a mixture of powders. The liners of the invention may be used particularly in the automobile industry and in any kind of industry where liner-piston units of good compatibility must be obtained from aluminum alloys.
대표청구항
▼
1. Engine cylinder liners comprising: (1) a matrix comprising an aluminum alloy produced by powder metallurgy, said alloy being selected from the group consisting of A--S 12 UG alloys and series 7,000 alloys containing from 1 to 12% by weight added silicon, and (2) a dispersion of grains distrib
1. Engine cylinder liners comprising: (1) a matrix comprising an aluminum alloy produced by powder metallurgy, said alloy being selected from the group consisting of A--S 12 UG alloys and series 7,000 alloys containing from 1 to 12% by weight added silicon, and (2) a dispersion of grains distributed within said matrix comprising at least one added intermetallic compound having a melting point of more than 700° C., said grains being distinct and not forming part of the actual alloy structure. 2. The liners of claim 1, wherein the intermetallic compound is Ni 3 Sn. 3. The liners of claim 1, wherein the intermetallic compound is in the form of calibrated grains of dimensions from 5 to 50 μm. 4. The liners of claim 1, wherein the grains of intermetallic compound comprise 5 to 15% of the weight of the liner. 5. The liners of claim 1, wherein the grains of intermetallic compound comprise particles resulting from grinding. 6. The liners of claim 1, wherein the grains of intermetallic compound comprise particles resulting from solidification of an atomized liquid. 7. The liners of claim 1, additionally comprising graphite. 8. The liners of claim 7, wherein the amount of graphite in the liner is from 3 to 10% by weight. 9. In a method of producing engine cylinder liners, comprising: (1) converting an aluminum alloy from the liquid state to a powder of particle dimensions from 60 to 400 μm; (2) shaping said powder by cold compression; and (3) sintering said shaped powder in a controlled atmosphere, the improvement comprising mixing the powder prior to shaping with grains of an intermetallic compound having a grain size of 5 to 50 μm and a melting point of more than 700° C., the grains being added in such quantity that they comprise 5 to 15% by weight of the liners. 10. In a method of producing engine cylinder liners, comprising: (1) converting an aluminum alloy from the liquid state to a powder of particle dimensions from 60 to 400 μm; (2) shaping by extruding said powder in a press selected from the group consisting of floating needle presses and bridge machinery presses, and; (3) trimming the extruded product obtained and cutting up said extruded product to the desired length, the improvement comprising mixing the powder prior to shaping with grains of an intermetallic compound having a grain size of 5 to 50 μm and a melting point of more than 700° C., the grains being added in such quantity that they comprise 5 to 15% by weight of the liners. 11. The method of claim 10, wherein the extruded product is quenched on leaving the press, then subjected to a heat treatment, prior to being trimmed and cut up. 12. The method of claim 10, wherein the powder is initially compressed in the form of blanks, then subjected to backward extrusion to form a cup, the bottom and opposed edge of which are cut up to produce a liner which is subsequently machined. 13. The method of claim 12, wherein direct quenching of the cup is carried out after extrusion, prior to being cut up. 14. The method of claim 9, wherein 3 to 10% by weight of graphite powder is added to the mixture.
이 특허에 인용된 특허 (5)
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Singleton Ogle R. (Richmond VA) Edwards H. Marvin (Richmond VA), Aluminum powder metallurgy.
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Jenkinson ; David Charles, Aluminum-silicon alloys, cylinder blocks and bores, and method of making same.
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Ray Ranjan (Waltham MA) Polk Donald E. (Washington DC) Giessen Bill C. (Cambridge MA), Aluminum-transition metal alloys made using rapidly solidified powers and method.
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Perrot Rene (Voreppe FRX) Mazodier Jean-Louis (Maisons Laffitte FRX), Hollow bodies produced by powder extrusion of aluminum-silicon alloys.
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Hildeman Gregory J. (Murrysville PA) Kuli ; Jr. John C. (Saxonburg PA) Vivola Leo A. (New Kensington PA), Method for producing aluminum powder alloy products having improved strength properties.
이 특허를 인용한 특허 (10)
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Iwata Yasuo (Toyota JPX) Mae Shigenori (Toyota JPX) Urai Yoshio (Toyota JPX) Tsunoda Takayuki (Toyota JPX), Aluminium alloy having an excellent forgiability.
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Maki Yoshihiro (Miura JPX) Matsuyama Akira (Kamakura JPX) Tanizaki Katsuji (Yokosuka JPX) Okabe Noboru (Funabashi JPX) Kishida Katsuhiro (Yokosuka JPX) Sakai Takeshi (Chiba JPX) Ohgaki Toshinaga (Yac, Aluminum base bearing alloy and method of producing same.
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Shimizu Tsutomu (Higashi-Hiroshima JPX) Miyata Jun (Hiroshima JPX) Yagii Koji (Hiroshima JPX), Apex seal for rotary piston engines.
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Schepak, Antony George; Maki, Clifford E.; Hintzen, Mathew Leonard, Coated bore aluminum cylinder liner for aluminum cast blocks.
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Maki, Clifford E.; Schepak, Antony George; Hintzen, Mathew Leonard; Boileau, James Maurice; Thibault, Mark W., Extruded cylinder liner.
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Sanford, Richard Eugene, Magnet drive motor.
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Hansen Kaad Flemming (Hgans SEX) Pettersson Ola (Hgans SEX), Method for manufacturing a tubular compact.
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Bernhard Commandeur DE; Rolf Schattevoy DE; Klaus Hummert DE, Process for manufacturing thin pipes.
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Commandeur Bernhard,DEX ; Schattevoy Rolf,DEX ; Hummert Klaus,DEX, Process for manufacturing thin pipes.
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Ghosh Amit K. (Thousand Oaks CA) Mahoney Murray W. (Camarillo CA), Superplastically formable aluminum alloy and composite material.
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