GB2106433A - Squeeze casting of pistons - Google Patents
Squeeze casting of pistons Download PDFInfo
- Publication number
- GB2106433A GB2106433A GB08128674A GB8128674A GB2106433A GB 2106433 A GB2106433 A GB 2106433A GB 08128674 A GB08128674 A GB 08128674A GB 8128674 A GB8128674 A GB 8128674A GB 2106433 A GB2106433 A GB 2106433A
- Authority
- GB
- United Kingdom
- Prior art keywords
- whiskers
- piston
- fibres
- mat
- mould
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009716 squeeze casting Methods 0.000 title abstract description 3
- 229910001092 metal group alloy Inorganic materials 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000012779 reinforcing material Substances 0.000 claims abstract description 6
- 238000005266 casting Methods 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 9
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- ZUPBPXNOBDEWQT-UHFFFAOYSA-N [Si].[Ni].[Cu] Chemical compound [Si].[Ni].[Cu] ZUPBPXNOBDEWQT-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims 1
- 238000005336 cracking Methods 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 2
- 102100040428 Chitobiosyldiphosphodolichol beta-mannosyltransferase Human genes 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
- B22D19/0027—Cylinders, pistons pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/14—Casting in, on, or around objects which form part of the product the objects being filamentary or particulate in form
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/10—Pistons having surface coverings
- F02F3/12—Pistons having surface coverings on piston heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F2200/00—Manufacturing
- F02F2200/06—Casting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0448—Steel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/16—Fibres
Abstract
A light metal alloy piston (2) has a reinforced crown comprising a layer or mat (1) of whiskers or fibres of reinforcing material embedded in and having its interstices filled by the light metal alloy. The piston is formed in a mould or die in the crown-down position by disposing a mat of whiskers or fibres of reinforcing material in the bottom of the mould, and introducing the metal alloy by a squeeze casting technique so that the whiskers are embedded in the metal alloy. <IMAGE>
Description
SPECIFICATION
Pistons
The present invention relates to pistons for internal combustion engines.
It is known that a piston of a light metal alloy such as an aluminium alloy, and particularly a diesel piston having a combustion bowl, may experience cracking on the crown under certain operational cycles. Such cracking is more prevalent around the edge of the combustion bowl and may be particularly severe if the combustion bowl is of the re-entrant type.
It is also known that such cracking can be eliminated by the use of a cast-in reinforcement made from high strength, high thermal conductivity copper alloys, such as for example beryllium-copper and copper-nickel-silicon bronze, whereby the crack-susceptible edge of the combustion bowl is machined within the copper alloy material.
Because the strength ofthe aluminium alloy in the piston crown around the copper alloy reinforcement is inadequate to withstand stresses imposed by the inertia load of the copper-alloy reinforcement it is usually necessary to anchor the reinforcement by projecting legs (which may be of stainless steel or of copper alloy) into the cooler parts of the piston.
However the production of such a piston gives rise to problems. These basically are:
a) accuaracy of location if the piston is made by conventional crown-up casting techniques, and
b) of ensuring freedom from skirt porosity if the casting is cast crown-down, thereby facilitating accurate location of the reinforcement and anchor legs.
The present invention has for its object to provide a method of making a light metal alloy piston having a reinforced crown which overcomes or substantially eliminates the problem of piston crown cracking above referred to, which does not rely on anchoring legs or intermetallic bonding for anchoring the reinforcement to the piston alloy, and which at the same time improves the mechanical properties of the parent casting alloy by substantially eliminating casting porosity, particularly in the thinner parts of the casting. A further object of the invention is to provide a light metal alloy piston having a reinforced crown and possessing the above structural characteristics..
According to the invention, the method of making a light metal alloy piston having a reinforced crown includes the steps of:
a) arranging a piston mould or die in the crowndown position, i.e. with the portion of the mould or die which forms the piston crown lowermost,
b) positioning a mat of whiskers or fibres of reinforcing material on the bottom surface of the mould or die to cover the whole or a selected part or selected parts of said surface.
c) introducing into the mould or die a molten mass of a light metal alloy to cover the mat and fill the mould or die,
d) applying to the molten mass in the mould or die sufficient pressure to overcome the surface tension between said mat and said molten mass to ensure that the molten mass penetrates and fills the interstices of the mat,
e) allowing the molten alloy to solidify in contact with the mat of whiskers or fibres to form a composite casting having the whiskers or fibres embedded in the light metal alloy.
The composite casting is machined to produce the finished piston.
The invention also consists in a light metal alloy piston having a reinforced crown, characterised in that the reinforcement comprises a layer or mat of whiskers or fibres of reinforcing material embedded in and having its interstices filled by the light metal alloy.
The light metal alloy is preferably an aluminium alloy, such as an aluminium-silicon alloy.
Substantially pure aluminium may also be used.
The whiskers or fibres are preferably alumina (Al203) or silicon carbide (SiC). The preferred diameter of the whiskers or fibres is about 2 to about 5 micron metres. The mat may be produced by the process described in U.K. Patent No.
1 489346. Other refractory oxides or metallides may be used; also high strength and high thermal conductivity metals, such as beryllium-copper alloys and copper-nickel-silicon bronze.
The mat positioned on the bottom surface of the mould or die may have a thickness of 6 to 10 mm and a porosity such that when infiltrated with the metal alloy there will be a 540% by volume of whiskers of fibres, preferably about 20%.
The mat simply rests on the bottom surface of the mould or die and is held there by the molten alloy introduced through the top of the mould or die for example at a temperature of about 670-7400C so that means for locating the mat in the mould or die are unnecessary. The mat may extend over the whole of the bottom surface of the mould or die or may be in the form of a ring so that the central part of the crown which is machined away to form the combustion bowl consists essentially of the light metal alloy, the reinforcement existing around the edge of the combustion bowl. Such an annular mat need not extend to the outer periphery of the crown.
Pressure may be applied to the molten metal by a ram above the cavity in the mould or die. The ram is forced down in contact with the molten metal, causing the molten metal to penetrate downwards and fill the interstices of the mat, at the same time improving the mechanical properties of the alloy and reducing porosity in the casting, particularly in the piston skirt and other thin-section parts of the casting. The squeeze casting load applied may be from 2 to 20 tons psi (31 5-31 50 kg/cm2) depending on the size of the piston, and the load may be held from 55 seconds to 2 minutes, again depending on the size of the section being cast.
The whiskers or fibres of the mat may be in random array or may be oriented in a particular direction in which extra strength is required. If desired the whiskers or fibres may be pre-heated, for example to 200 to 3500C.
An embodiment of the invention is shown in the accompanying drawing in which an annular mat 1 of whiskers or fibres is embedded in the crown of the light metal alloy 1 of the piston.
Claims (10)
1. A method of making a light metal alloy
piston having a reinforced crown including the
steps of:
a) arranging a piston mould or die in the crowndown position, i.e. with the portion of the mould or die which forms the piston crown lowermost,
b) positioning a mat of whiskers or fibres of reinforcing material on the bottom surface of the
mould or die to cover the whole or a selected part or selected parts of said surface,
c) introducing into the mould or die a molten mass of a light metal alloy to cover the mat and fill the mould or die,
d) applying to the molten mass in the mould or die sufficient pressure to overcome the surface tension between said mat and said molten mass to ensure that the molten mass penetrates and fills the interstices of the mat,
e) allowing the molten alloy to solidify in contact with the mat of whiskers or fibres to form a composite casting having the whiskers or fibres embedded in the light metal alloy.
2. A method as claimed in claim 1, in which the eentral part of the piston crown is machined away to form a combustion bowl whose edge is reinforced by the whiskers or fibres.
3. A method as claimed in claim 1, in which pressure is applied to the molten metal by a ram above the cavity in the mould or die, for example in the range from 2 to 20 tons p.s.i. (315-3150 Kg/cm2).
4. A method as claimed in claim 1, 2 or 3, in which the layer or mat of whiskers or fibres has a porosity such that when infiltrated by the metal alloy there will be a to 5 to 40% by volume of whiskers or fibres.
5. A light metal alloy piston having a reinforced crown, characterised in that the reinforcement comprises a layer or mat of whiskers or fibres of reinforcing material embedded in and having its interstices filled by the light metal alloy.
6. A piston as claimed in claim 5, in which the light metal alloy is an aluminium alloy for example an aluminium-silicon alloy.
7. A piston as claimed in claim 5 or 6, in which the whiskers or fibres are selected from, alumina, silicon carbide, a beryllium-copper alloy or a copper-nickel-silicon bronze.
8. A piston as claimed in claim 5, 6 or 7, in which the whiskers or fibres have a diameter of between 2 to 5 micron metres.
9. A piston as claimed in any of claims 5 to 8, in which the layer or mat of whiskers or fibres is of annular form.
10. A piston as claimed in any of claims 5 to 9, in which the piston crown is formed with a combustion bowl whose edge is reinforced by the whiskers or fibres.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08128674A GB2106433B (en) | 1981-09-22 | 1981-09-22 | Squeeze casting of pistons |
| DE19823234504 DE3234504A1 (en) | 1981-09-22 | 1982-09-17 | PISTON FOR INTERNAL COMBUSTION ENGINES AND METHOD FOR THE PRODUCTION THEREOF |
| FR8215983A FR2513153B1 (en) | 1981-09-22 | 1982-09-22 | PISTON FOR INTERNAL COMBUSTION ENGINE AND MANUFACTURING METHOD THEREOF |
| JP57165968A JPS58100642A (en) | 1981-09-22 | 1982-09-22 | Piston and manufacture |
| IT46860/82A IT1159218B (en) | 1981-09-22 | 1982-09-22 | PISTON FOR ENGINES IN GENERAL |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08128674A GB2106433B (en) | 1981-09-22 | 1981-09-22 | Squeeze casting of pistons |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2106433A true GB2106433A (en) | 1983-04-13 |
| GB2106433B GB2106433B (en) | 1985-11-06 |
Family
ID=10524678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08128674A Expired GB2106433B (en) | 1981-09-22 | 1981-09-22 | Squeeze casting of pistons |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS58100642A (en) |
| DE (1) | DE3234504A1 (en) |
| FR (1) | FR2513153B1 (en) |
| GB (1) | GB2106433B (en) |
| IT (1) | IT1159218B (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984002096A1 (en) * | 1982-11-24 | 1984-06-07 | Ae Plc | The connection of aluminium or aluminium alloys to other metal materials |
| GB2135222A (en) * | 1983-02-04 | 1984-08-30 | Ae Plc | The reinforcement of pistons of aluminium or aluminium alloys |
| WO1985004605A1 (en) * | 1984-04-07 | 1985-10-24 | Gkn Technology Limited | Method of squeeze forming metal articles |
| GB2158185A (en) * | 1984-05-01 | 1985-11-06 | Ae Plc | Reinforced light metal pistons |
| EP0171567A2 (en) * | 1984-08-16 | 1986-02-19 | Mahle Gmbh | Internal-combustion engine piston with a fibre-reinforced combustion chamber cavity |
| GB2163072A (en) * | 1984-05-30 | 1986-02-19 | Ae Plc | The manufacture of pistons |
| EP0184864A1 (en) * | 1984-12-05 | 1986-06-18 | KOLBENSCHMIDT Aktiengesellschaft | Cast construction parts for internal-combustion engines incorporating reinforcing elements, and method for producing the connection between the parts and the elements |
| GB2173134A (en) * | 1985-04-04 | 1986-10-08 | Imp Clevie Inc | Cast metal composite article |
| WO1986005774A1 (en) * | 1985-04-02 | 1986-10-09 | Aeplc | Fibre reinforced ceramics |
| FR2592374A1 (en) * | 1985-12-27 | 1987-07-03 | Peugeot | CERAMIC-METAL DIRECT LINKING PROCESS |
| US4715422A (en) * | 1983-01-18 | 1987-12-29 | Ae Plc | Reinforcement of articles of cast metal or metal alloy |
| US4804033A (en) * | 1985-07-26 | 1989-02-14 | Ae Plc | Production of engineering components |
| US4966221A (en) * | 1983-05-18 | 1990-10-30 | Mazda Motor Corporation | Method of producing aluminum alloy castings and piston made of aluminum alloy |
| US4995444A (en) * | 1987-03-02 | 1991-02-26 | Battelle Memorial Institute | Method for producing metal or alloy casting composites reinforced with fibrous or particulate materials |
| US5354528A (en) * | 1990-12-26 | 1994-10-11 | Tokai Carbon Co., Ltd. | Process for producing preform for metal matrix composite |
| WO2002049790A1 (en) * | 2000-12-21 | 2002-06-27 | Jury Alexandrovich Tsyrulnik | Method for producing pistons for internal combustion engines |
| WO2013155131A3 (en) * | 2012-04-12 | 2014-01-16 | Rel, Inc. | Thermal isolation for casting articles |
| CN112648104A (en) * | 2020-12-07 | 2021-04-13 | 中国兵器科学研究院宁波分院 | Whisker reinforced aluminum alloy piston and preparation method thereof |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2123727B (en) * | 1982-06-25 | 1985-11-20 | Ae Plc | Pressure-casting pistons |
| US4546048A (en) * | 1984-03-23 | 1985-10-08 | Dana Corporation | Composite thermal shield for engine components |
| BR8500556A (en) * | 1985-02-07 | 1986-09-09 | Metal Leve S/A. Industria E Comercio | PUMP AND PUMP MANUFACTURING PROCESS FOR INTERNAL COMBUSTION ENGINES |
| DE3700651A1 (en) * | 1987-01-12 | 1988-07-21 | Kloeckner Humboldt Deutz Ag | Cylinder head for air-cooled internal combustion engines |
| JPH086637B2 (en) * | 1988-03-09 | 1996-01-29 | トヨタ自動車株式会社 | Piston for internal combustion engine made of fiber reinforced aluminum alloy |
| DE4243023A1 (en) * | 1992-12-18 | 1994-06-23 | Audi Ag | Ceramic reinforced composite, used for moving internal combustion engine components. |
| DE19712624C2 (en) * | 1997-03-26 | 1999-11-04 | Vaw Motor Gmbh | Aluminum matrix composite and process for its manufacture |
| US8707853B1 (en) | 2013-03-15 | 2014-04-29 | S.P.M. Flow Control, Inc. | Reciprocating pump assembly |
| USD726224S1 (en) | 2013-03-15 | 2015-04-07 | S.P.M. Flow Control, Inc. | Plunger pump thru rod |
| MX2017000021A (en) | 2014-06-27 | 2017-05-01 | Spm Flow Control Inc | Pump drivetrain damper system and control systems and methods for same. |
| MX2017000888A (en) | 2014-07-25 | 2017-05-04 | Spm Flow Control Inc | Bearing system for reciprocating pump and method of assembly. |
| CA2972031C (en) | 2014-12-22 | 2020-01-07 | S.P.M. Flow Control, Inc. | Reciprocating pump with dual circuit power end lubrication system |
| USD759728S1 (en) | 2015-07-24 | 2016-06-21 | S.P.M. Flow Control, Inc. | Power end frame segment |
| US10436766B1 (en) | 2015-10-12 | 2019-10-08 | S.P.M. Flow Control, Inc. | Monitoring lubricant in hydraulic fracturing pump system |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE455368C (en) * | 1926-08-17 | 1928-01-30 | Richard Mueller | Process for the production of light metal pistons with cast-in chucks for the sealing rings |
| DE654297C (en) * | 1935-05-27 | 1937-12-16 | Eisenbau A G | Gas heater |
| GB807633A (en) * | 1956-11-26 | 1959-01-21 | Wendell Chester Cheney | Piston with head insert and process of making it |
| JPS5260222A (en) * | 1975-09-30 | 1977-05-18 | Honda Motor Co Ltd | Method of manufacturing fibre reinforced composite |
| JPS5292827A (en) * | 1976-01-16 | 1977-08-04 | Honda Motor Co Ltd | Method of manufacturing structures with fiber reinforced composite parts |
| US4137887A (en) * | 1976-06-11 | 1979-02-06 | Perkins Engines Limited | Pistons for internal combustion engines |
| JPS5341622A (en) * | 1976-09-27 | 1978-04-15 | Honda Motor Co Ltd | Piston made of fiber-reinforced light alloy |
| JPS5442333A (en) * | 1977-08-08 | 1979-04-04 | Honda Motor Co Ltd | Production of fiberrreinforced composite material |
| DE2743512A1 (en) * | 1977-08-27 | 1979-03-01 | Eugen Stump | IC engine piston suppressing noise - has chromium plated rim ring held with heat resistant expansion layer |
| GB1598585A (en) * | 1978-05-03 | 1981-09-23 | Wellworthy Ltd | Pistons |
| GB1595280A (en) * | 1978-05-26 | 1981-08-12 | Hepworth & Grandage Ltd | Composite materials and methods for their production |
-
1981
- 1981-09-22 GB GB08128674A patent/GB2106433B/en not_active Expired
-
1982
- 1982-09-17 DE DE19823234504 patent/DE3234504A1/en not_active Ceased
- 1982-09-22 FR FR8215983A patent/FR2513153B1/en not_active Expired
- 1982-09-22 JP JP57165968A patent/JPS58100642A/en active Pending
- 1982-09-22 IT IT46860/82A patent/IT1159218B/en active
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984002096A1 (en) * | 1982-11-24 | 1984-06-07 | Ae Plc | The connection of aluminium or aluminium alloys to other metal materials |
| US4715422A (en) * | 1983-01-18 | 1987-12-29 | Ae Plc | Reinforcement of articles of cast metal or metal alloy |
| GB2135222A (en) * | 1983-02-04 | 1984-08-30 | Ae Plc | The reinforcement of pistons of aluminium or aluminium alloys |
| US4966221A (en) * | 1983-05-18 | 1990-10-30 | Mazda Motor Corporation | Method of producing aluminum alloy castings and piston made of aluminum alloy |
| WO1985004605A1 (en) * | 1984-04-07 | 1985-10-24 | Gkn Technology Limited | Method of squeeze forming metal articles |
| US4667727A (en) * | 1984-04-07 | 1987-05-26 | Gkn Technology Limited | Method of squeeze forming metal articles |
| GB2158185A (en) * | 1984-05-01 | 1985-11-06 | Ae Plc | Reinforced light metal pistons |
| US4651631A (en) * | 1984-05-30 | 1987-03-24 | Ae Plc | Manufacture of pistons |
| GB2163072A (en) * | 1984-05-30 | 1986-02-19 | Ae Plc | The manufacture of pistons |
| EP0171567A3 (en) * | 1984-08-16 | 1987-02-04 | Mahle Gmbh | Internal-combustion engine piston with a fibre-reinforced combustion chamber cavity |
| EP0171567A2 (en) * | 1984-08-16 | 1986-02-19 | Mahle Gmbh | Internal-combustion engine piston with a fibre-reinforced combustion chamber cavity |
| EP0184864A1 (en) * | 1984-12-05 | 1986-06-18 | KOLBENSCHMIDT Aktiengesellschaft | Cast construction parts for internal-combustion engines incorporating reinforcing elements, and method for producing the connection between the parts and the elements |
| WO1986005774A1 (en) * | 1985-04-02 | 1986-10-09 | Aeplc | Fibre reinforced ceramics |
| GB2173134A (en) * | 1985-04-04 | 1986-10-08 | Imp Clevie Inc | Cast metal composite article |
| US4804033A (en) * | 1985-07-26 | 1989-02-14 | Ae Plc | Production of engineering components |
| FR2592374A1 (en) * | 1985-12-27 | 1987-07-03 | Peugeot | CERAMIC-METAL DIRECT LINKING PROCESS |
| EP0230192A1 (en) * | 1985-12-27 | 1987-07-29 | Automobiles Peugeot | Method for a direct ceramic-metal bond |
| US4995444A (en) * | 1987-03-02 | 1991-02-26 | Battelle Memorial Institute | Method for producing metal or alloy casting composites reinforced with fibrous or particulate materials |
| US5354528A (en) * | 1990-12-26 | 1994-10-11 | Tokai Carbon Co., Ltd. | Process for producing preform for metal matrix composite |
| WO2002049790A1 (en) * | 2000-12-21 | 2002-06-27 | Jury Alexandrovich Tsyrulnik | Method for producing pistons for internal combustion engines |
| WO2013155131A3 (en) * | 2012-04-12 | 2014-01-16 | Rel, Inc. | Thermal isolation for casting articles |
| US9180511B2 (en) | 2012-04-12 | 2015-11-10 | Rel, Inc. | Thermal isolation for casting articles |
| US10179364B2 (en) | 2012-04-12 | 2019-01-15 | Rel, Inc. | Thermal isolation for casting articles |
| US10434568B2 (en) | 2012-04-12 | 2019-10-08 | Loukus Technologies, Inc. | Thermal isolation spray for casting articles |
| CN112648104A (en) * | 2020-12-07 | 2021-04-13 | 中国兵器科学研究院宁波分院 | Whisker reinforced aluminum alloy piston and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3234504A1 (en) | 1983-04-07 |
| JPS58100642A (en) | 1983-06-15 |
| FR2513153B1 (en) | 1987-01-09 |
| FR2513153A1 (en) | 1983-03-25 |
| GB2106433B (en) | 1985-11-06 |
| IT1159218B (en) | 1987-02-25 |
| IT8246860A0 (en) | 1982-09-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19990922 |