GB2254814A - Reinforced light metal article and method for its production - Google Patents
Reinforced light metal article and method for its production Download PDFInfo
- Publication number
- GB2254814A GB2254814A GB9207456A GB9207456A GB2254814A GB 2254814 A GB2254814 A GB 2254814A GB 9207456 A GB9207456 A GB 9207456A GB 9207456 A GB9207456 A GB 9207456A GB 2254814 A GB2254814 A GB 2254814A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ceramic foam
- article
- light metal
- foam reinforcement
- per inch
- 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.)
- Withdrawn
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 25
- 239000002184 metal Substances 0.000 title claims description 25
- 238000000034 method Methods 0.000 title claims description 21
- 238000004519 manufacturing process Methods 0.000 title description 6
- 230000002787 reinforcement Effects 0.000 claims description 42
- 239000006260 foam Substances 0.000 claims description 41
- 239000000919 ceramic Substances 0.000 claims description 40
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 16
- 239000011148 porous material Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 238000009716 squeeze casting Methods 0.000 claims description 9
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 230000000704 physical effect Effects 0.000 claims description 6
- 239000002243 precursor Substances 0.000 claims description 6
- 229910010293 ceramic material Inorganic materials 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052863 mullite Inorganic materials 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 11
- 238000005266 casting Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 3
- 239000006261 foam material Substances 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 230000002459 sustained effect Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011156 metal matrix composite Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 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
- B22D19/14—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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/228—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D2055/0004—Parts or details of disc brakes
- F16D2055/0016—Brake calipers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0004—Materials; Production methods therefor metallic
- F16D2200/0026—Non-ferro
- F16D2200/003—Light metals, e.g. aluminium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0034—Materials; Production methods therefor non-metallic
- F16D2200/0039—Ceramics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0007—Casting
- F16D2250/0015—Casting around inserts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Description
1 2234814 Title: Reinforced light metal article and method for its
production.
This invention relates to a reinforced light metal article and to its method of production.
The use of light metals e.g. aluminium or magnesium and their alloys is often desirable as an alternative to ferrous metals in the production of articles where weight saving is important. For example, certain automotive components have been made of aluminium alloy as an alternative to steel or cast iron; specifically disc brake calipers in high performance racing cars have been made of aluminium for the express purpose of weight reduction.
Articles such as brake calipers are subject to high temperature operating conditions which cast aluminium alloys are generally unable to accommodate without bending or creeping. Such articles have also been produced by machining from a block of aluminium alloy but this is an extremely expensive procedure and the machined article is still subject to the same high temperature operating problems as those articles produced as castings.
It is known to provide reinforcement in light metal alloys either at selective positions within the finished article or uniformly throughout the article as a metal matrix composite. For example, particulate or fibrous ceramic reinforcements have been proposed for enhancing the properties of aluminium alloy internal combustion engine pistons but such reinforcements have generally been provided as a relatively simple shape comprising for example a cylindrical pad of such reinforcement material.
It is an object of the present invention to provide a reinforced light metal article, and a method for its production, wherein the reinforcement may be of a relatively complex shape, is economical to produce, and is easy to incorporate within the metal alloy.
ln accordance with a first aspect of the invention there is provided a cast light metal alloy article comprising one or more ceramic foam reinforcement i 2 elements incorporated within the metal matrix at one or more preselected positions at which reinforcement is required to enhance the physical properties of the metal alloy.
Also in accordance with the invention there is provided a method of producing a cast light metal alloy article comprising pouring molten light metal alloy into a mould containing one or more ceramic foam reinforcement elements at preselected positions within the mould to correspond to positions at which reinforcement is required to enhance the physical properties of the finished cast article, and permitting said molten metal to penetrate and fill the interstices of said one or more ceramic foam reinforcement elements.
The said cast article may be produced by a known casting process such as low or high pressure die casting or squeeze casting. In particular, a squeeze casting process would generally be more suitable where the finished article is to be of a relatively complex shape and the ceramic foam reinforcement is relatively dense. Said ceramic foam reinforcement may have a density within the range 10 pores per inch (the interstices of which may easily be penetrated and filled even in a low pressure casting process) up to 100 pores per inch or more although it will be appreciated that, the higher the density of the foam, the higher will be the pressures required in the casting process to enable the molten metal fully to penetrate and fill the interstices of the ceramic foam.
Such ceramic foam may comprise an alumino-silicate, alumina, zirconia or mullite material. It may conveniently be formed to a predetermined desired shape by firstly forming a sacrificial plastics (e.g. polystyrene) foam precursor to the desired shape, impregnating the plastics precursor by dipping it into a slurry of the ceramic material, and subsequently drying the ceramic material and burning off the sacrificial plastics material to leave a ceramic foam of the desired shape.
Ceramic foams produced essentially by the above method are known and are used as filters for molten metals wherein they are generally disposed of after a single use. In such use, such foams are not required to have any particular 3 physical properties of for example strength or wear resistance and, generally, they are of a relatively low density whereby the molten metal to be filtered may pass easily through the pores simply by being poured over the filter.
Conversely, cast articles produced in accordance with the invention enable such ceramic foam materials to be made use of for purposes far removed from their original application. Such ceramic foam materials provide improved stiffness properties in cast light metal alloys and such materials can be preformed to any desired shape for incorporation within the cast article. Thus, by way of example, preformed shaped ceramic foam reinforcement elements may be incorporated into those parts of a light metal brake caliper which are subject to high stresses which, in the absence of an improved modulus of elasticity and hence improved stiffness as provided in accordance with the present invention, would be liable to bending and creep under the high temperature operating conditions to which such calipers are exposed in high performance vehicle applications. In particular, the ceramic foam reinforcement elements may be preshaped to be incorporated within the yokes of such calipers to enable the caliper to resist forces acting thereon in directions both axially and circumferentially relative to the disc to be braked.
It will be appreciated that cast light metal articles according to the invention may find numerous applications other than as disc brake calipers. The ceramic foam reinforcement elements, as well as having the ability to provide the improved stiffness as mentioned above,.,,dll also modify the overall coefficient of thermal expansion of a cast article incorporating such elements and may also be utilised to provide wear resistance to the surface of light metal articles having such elements incorporated therein.
Other features of the invention will become apparent from the following description given herein solely by way of example with reference to the accompanying drawings wherein:
Figure 1 is a photomicrograph to a magnification of x 7 of a section cut through a laboratory-produced sample of a squeeze cast light metal alloy 1 4 incorporating a ceramic foam reinforcement element having a density of 60 pores per inch, Figure 2 is a somewhat diagrammatic top-plan view of a brake caliper incorporating ceramic foam reinforcement elements in accordance with the invention, and Figure 3 is a cross-sectional view taken on the line A-A of Figure 2.
By way of experiment a light metal alloy article in accordance with the invention was produced by squeeze casting molten aluminium-coppermagnesium alloy around a ceramic foam reinforcement element having a density of 60 pores per inch. The squeeze casting process comprised the introduction of liquid metal into a first part of a mould within which the ceramic foam reinforcement was located, closing the mould under pressure so that the liquid metal filled the mould cavity without entrapping air, maintaining the metal under pressure whilst solidification took place so as to ensure that any shrinkage cavities which may form were closed and filled, and then opening the mould and removing the formed article. The pressure applied to the melt was of the order of 45MPa to 10OMPa and was sustained for a period of time of the order of 15 to 90 seconds. During this sustained pressure the temperature of the melt was typically between 700T and 770T. The ceramic foam reinforcement element is inherently capable of sustaining its integrity under these sustained conditions of temperature and pressure application to the melt whereby the interstices of the foam element become penetrated and filled with liquid metal.
The experimental aluminium alloy article described in the preceding paragraph was in the form of a disc-like sample, a section of which is shown to a magnification of x 7 in the photomicrograph comprising Figure 1 of the drawings. In this drawing the light areas comprise the aluminium alloy and the dark areas comprise the ceramic foam material whereby it will be seen that there has been extensive penetration by the aluminium alloy into the pores of the ceramic foam. The upper more solid light area shown in Figure 1 comprises an aluminium alloy skin formed on the sample whereas, below said skin, it will be seen that the aluminium alloy is present as dispersed discrete pools of metal separated by ceramic material.
The laboratory-produced sample illustrated in Figure 1 was of a simple disc-like shape produced by squeeze-casting an aluminium alloy in a disc shaped mould containing a disc shaped ceramic foam reinforcement. It should be appreciated however that the invention is concerned primarily with the production of reinforced light metal articles having ceramic foam reinforcement of a relatively complex shape. Such a complex shape of reinforcement may be produced by initially forming a sacrificial plastics material such as polystyrene to the desired shape as a precursor. The precursor is then dipped into a slurry of the ceramic material and subsequently dried with the sacrificial plastics material being burnt off to leave ceramic foam of the desired shape. This ceramic foam may then be incorporated in a cast light metal alloy article in accordance with the invention, the casting process being low or high pressure die casting or squeeze casting.
In Figures 2 and 3 of the drawings there is illustrated a squeeze cast brake caliper 10 incorporating ceramic foam reinforcing elements in accordance with the invention. The caliper 10 houses four brake pads arranged in two opposed pairs at positions indicated by reference numerals 12, 14 and 16, 18 with each pair of pads being operable to bear on opposed surfaces of a disc to be braked. With reference to Figure 2, the axis of rotation of the disc is represented by the chain-dot line 20 whereas the plane of rotation of the disc is represented by the chain-dot line 22. Referring to Figure 3 it will be seen that the caliper includes a pair of through bores 24, 26 at each side of the caliper within which are locatable hydraulically actuated pistons (not shown) for moving respective brake pads towards the disc for braking purposes. In use, the most highly stressed portions of the caliper 10 comprise yokes 28, 30 extending circumferentially of the disc and yokes 32, 34 extending axially thereof from side to side and it is in these yoke positions that it is important to provide the ceramic foam reinforcement elements 36, 38 in accordance with the invention. The provision of such 6 reinforcements improves the modulus of the cast metal caliper and thus stiffens it against bending forces in the aforesaid yoke regions.
Although one embodiment of the invention has been described herein with reference to a squeeze cast aluminium alloy brake caliper it will be appreciated that the invention is applicable to many other light metal articles produced by the same or alternative casting processes.
The features disclosed in the foregoing description, or the following claims, or the accompanying drawings, expressed in their specific forms or in terms of a means for performing the disclosed function, or a method or process for attaining the disclosed result, as appropriate, may, separately or in any combination of such features, be utilised for realising the invention in diverse forms thereof.
7
Claims (1)
- CLAIMS:1. A cast light metal alloy article comprising one or more ceramic foam reinforcement elements incorporated within the metal matrix at one or more preselected positions at which reinforcement is required to enhance the physical properties of the metal alloy.2. An article as claimed in Claim 1 wherein the or each said ceramic foam reinforcement element has a density of between 10 pores per inch and 100 pores per inch.3. An article as claimed in either one of Claims 1 or 2 wherein the or each said ceramic foam reinforcement element is selected from the group comprising an alumino-silicate, alumina, zirconia or mullite material.4. An article as claimed in any one of Claims 1 to 3 wherein the or each said ceramic foam reinforcement element is produced by forming a sacrificial plastics precursor to a desired shape, dipping said precursor in a foam slurry of ceramic material and subsequently burning off the sacrificial plastics material to provide a said reinforcement element of the desired shape.5. An article as claimed in any one of the preceding claims comprising a brake caliper for a disc brake wherein said ceramic foam reinforcement elements are incorporated in the metal matrix at those positions of the caliper which, in use, are subjected to high stresses.6. An article as claimed in any one of the preceding claims produced by a squeeze casting process.i 8 foam reinforcement elements at preselected positions within the mould to correspond to positions at which reinforcement is required to enhance the physical properties of the finished cast article, and permitting said molten metal to penetrate and fill the interstices of said one or more ceramic foam reinforcement elements.8. A method as claimed Claim 7 wherein the or each said ceramic foam reinforcement element has a density of between 10 pores per inch and 100 pores per inch.9. A method as claimed in either one of Claim 7 or 8 wherein the or each said ceramic foam reinforcement element is selected from the group comprising an alumino-silicate, alumina, zirconia, or mullite material.10. A method of producing a reinforced light metal brake caliper by squeeze casting substantially as hereinbefore described.11. A cast light metal alloy article whenever produced by a method as claimed in any one of Claims 7 to 10.12. A brake caliper for a disc brake constructed and arranged substantially as hereinbefore described.Amendments to the claims have been filed as follows 7. A method of producing a cast light metal alloy article comprising pouring molten light metal alloy into a mould containing one or more ceramic foam reinforcement elements at preselected positions within the mould to correspond to positions at which reinforcement is required to enhance the physical properties of the finished cast article, and permitting said molten metal to penetrate and fill the interstices of said one or more ceramic foam reinforcement elements.8. A method as claimed Claim 7 wherein the or each said ceramic foam reinforcement element has a density of between 10 pores per inch and 100 pores per inch.9. A method as claimed in either one of Claim 7 or 8 wherein the or each said ceramic foam reinforcement element is selected from the group comprising an alumino-silicate, alumina, zirconia, or mullite material.10. A method of producing a reinforced light metal brake caliper by squeeze casting substantially as hereinbefore described.11. A cast light metal alloy article whenever produced by a method as claimed in any one of Claims 7 to 10.12. A brake caliper for a disc brake constructed and arranged substantially as hereinbefore described.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB919108297A GB9108297D0 (en) | 1991-04-18 | 1991-04-18 | Reinforced light metal article and method for its production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9207456D0 GB9207456D0 (en) | 1992-05-20 |
| GB2254814A true GB2254814A (en) | 1992-10-21 |
Family
ID=10693499
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB919108297A Pending GB9108297D0 (en) | 1991-04-18 | 1991-04-18 | Reinforced light metal article and method for its production |
| GB9207456A Withdrawn GB2254814A (en) | 1991-04-18 | 1992-04-06 | Reinforced light metal article and method for its production |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB919108297A Pending GB9108297D0 (en) | 1991-04-18 | 1991-04-18 | Reinforced light metal article and method for its production |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE4212558A1 (en) |
| FR (1) | FR2675515A1 (en) |
| GB (2) | GB9108297D0 (en) |
| IT (1) | ITTO920351A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2259878A (en) * | 1991-09-25 | 1993-03-31 | Alcon Components Ltd | Brake caliper |
| GB2285490A (en) * | 1994-01-08 | 1995-07-12 | Gkn Sankey Ltd | A bearing member and method for its production |
| GB2291370A (en) * | 1994-07-20 | 1996-01-24 | Gkn Sankey Ltd | Casting around a rigid porous ceramic material |
| WO1998000254A1 (en) * | 1996-06-29 | 1998-01-08 | Honsel Ag | Process and device for producing a brake drum or brake disk |
| WO2001066991A1 (en) * | 2000-03-06 | 2001-09-13 | Fraunhofer Usa | Locally reinforced hollow structures and method for producing same |
| WO2004018725A1 (en) * | 2002-08-20 | 2004-03-04 | 3M Innovative Properties Company | Metal matrix composites, and methods for making the same |
| WO2010136208A1 (en) * | 2009-05-29 | 2010-12-02 | Metalogenia, S.L. | Wearing element for ground engaging operations with enhanced wear resistance |
| US8437145B2 (en) | 2009-10-23 | 2013-05-07 | Nec Infrontia Corporation | Image display apparatus |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4400898C1 (en) * | 1994-01-14 | 1995-03-30 | Bergische Stahlindustrie | Axle-mounted brake disc for rail vehicles |
| DE19612500A1 (en) * | 1996-03-29 | 1997-10-02 | Bleistahl Prod Gmbh & Co Kg | Process for the production of cylinder heads for internal combustion engines |
| DE19710671C2 (en) * | 1997-03-14 | 1999-08-05 | Daimler Chrysler Ag | Method for producing a component and use of a component produced in this way |
| DE19746164B4 (en) * | 1997-10-18 | 2005-09-15 | Volkswagen Ag | Composite material with an at least partially hollow profile and use thereof |
| DE19826848C5 (en) * | 1998-06-16 | 2006-02-23 | Borbet Gmbh | Alloy wheel for motor vehicles |
| DE29818886U1 (en) * | 1998-10-23 | 1999-03-04 | Dr.Ing.H.C. F. Porsche Ag, 70435 Stuttgart | Brake caliper for a partial brake disc brake |
| DE10035202A1 (en) * | 2000-07-20 | 2002-01-31 | Opel Adam Ag | Casting process and core for use in this process |
| EP1488125A1 (en) * | 2002-03-21 | 2004-12-22 | Freni Brembo S.p.A. | Disk brake caliper |
| DE10311875A1 (en) * | 2003-03-17 | 2004-11-18 | Wf-Maschinenbau Und Blechformtechnik Gmbh & Co Kg | Cylindrical wheel rim for use in automobile manufacture, has parallel grooves formed around circumference of cylinder through casting or forging |
| CN106986666A (en) * | 2017-03-17 | 2017-07-28 | 昆明理工大学 | A kind of preparation method without sintering ceramics preparative composite material |
| CN114349518B (en) * | 2022-01-11 | 2023-06-16 | 松山湖材料实验室 | Porous ceramic preform and preparation method thereof, hammer head and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1533512A (en) * | 1976-09-01 | 1978-11-29 | Mahle Gmbh | Pistons |
| GB2079653A (en) * | 1980-07-07 | 1982-01-27 | Teves Gmbh Alfred | A composite casting |
| EP0110097A1 (en) * | 1982-11-26 | 1984-06-13 | Toyota Jidosha Kabushiki Kaisha | Method and apparatus for manufacturing composite material using pressure chamber and casting chamber |
| GB2176725A (en) * | 1985-06-20 | 1987-01-07 | Akebono Brake Ind | Method of casting a fiber-reinforced brake caliper |
| GB2196623A (en) * | 1986-10-16 | 1988-05-05 | Nabeya Iron & Tool Works | Fluid-permeable article and method for producing the same |
| DD289947A5 (en) * | 1989-12-15 | 1991-05-16 | Veb Schwermaschinenbau "Georgi Dimitroff",De | METHOD FOR PRODUCING WEAR-RESISTANT CASTES |
| WO1991016159A1 (en) * | 1990-04-12 | 1991-10-31 | Alcan Deutschland Gmbh | Composite casting process |
| JPH10192460A (en) * | 1996-12-30 | 1998-07-28 | Noriyuki Takeoka | Golf putter |
-
1991
- 1991-04-18 GB GB919108297A patent/GB9108297D0/en active Pending
-
1992
- 1992-04-06 GB GB9207456A patent/GB2254814A/en not_active Withdrawn
- 1992-04-15 DE DE4212558A patent/DE4212558A1/en not_active Withdrawn
- 1992-04-16 FR FR9204714A patent/FR2675515A1/en not_active Withdrawn
- 1992-04-17 IT IT92TO000351A patent/ITTO920351A1/en not_active IP Right Cessation
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1533512A (en) * | 1976-09-01 | 1978-11-29 | Mahle Gmbh | Pistons |
| GB2079653A (en) * | 1980-07-07 | 1982-01-27 | Teves Gmbh Alfred | A composite casting |
| EP0110097A1 (en) * | 1982-11-26 | 1984-06-13 | Toyota Jidosha Kabushiki Kaisha | Method and apparatus for manufacturing composite material using pressure chamber and casting chamber |
| GB2176725A (en) * | 1985-06-20 | 1987-01-07 | Akebono Brake Ind | Method of casting a fiber-reinforced brake caliper |
| GB2196623A (en) * | 1986-10-16 | 1988-05-05 | Nabeya Iron & Tool Works | Fluid-permeable article and method for producing the same |
| DD289947A5 (en) * | 1989-12-15 | 1991-05-16 | Veb Schwermaschinenbau "Georgi Dimitroff",De | METHOD FOR PRODUCING WEAR-RESISTANT CASTES |
| WO1991016159A1 (en) * | 1990-04-12 | 1991-10-31 | Alcan Deutschland Gmbh | Composite casting process |
| JPH10192460A (en) * | 1996-12-30 | 1998-07-28 | Noriyuki Takeoka | Golf putter |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2259878A (en) * | 1991-09-25 | 1993-03-31 | Alcon Components Ltd | Brake caliper |
| GB2259878B (en) * | 1991-09-25 | 1995-01-11 | Alcon Components Ltd | Brake caliper |
| GB2285490A (en) * | 1994-01-08 | 1995-07-12 | Gkn Sankey Ltd | A bearing member and method for its production |
| GB2285490B (en) * | 1994-01-08 | 1997-11-05 | Gkn Sankey Ltd | A bearing member and method for its production |
| GB2291370A (en) * | 1994-07-20 | 1996-01-24 | Gkn Sankey Ltd | Casting around a rigid porous ceramic material |
| GB2291370B (en) * | 1994-07-20 | 1997-11-12 | Gkn Sankey Ltd | An article and method for its production |
| WO1998000254A1 (en) * | 1996-06-29 | 1998-01-08 | Honsel Ag | Process and device for producing a brake drum or brake disk |
| US6427754B1 (en) | 1996-06-29 | 2002-08-06 | Honsel Ag | Process and device for producing a brake drum or brake disc |
| WO2001066991A1 (en) * | 2000-03-06 | 2001-09-13 | Fraunhofer Usa | Locally reinforced hollow structures and method for producing same |
| WO2004018725A1 (en) * | 2002-08-20 | 2004-03-04 | 3M Innovative Properties Company | Metal matrix composites, and methods for making the same |
| WO2010136208A1 (en) * | 2009-05-29 | 2010-12-02 | Metalogenia, S.L. | Wearing element for ground engaging operations with enhanced wear resistance |
| US8763282B2 (en) | 2009-05-29 | 2014-07-01 | Metalogenia, S.A. | Wearing element with enhanced wear resistance |
| RU2610934C2 (en) * | 2009-05-29 | 2017-02-17 | Металохения, С.А. | Wear elements with increased wear resistance for earthwork |
| RU2610934C9 (en) * | 2009-05-29 | 2017-07-24 | Металохения, С.А. | Wear elements with increased wear resistance for earthwork |
| US8437145B2 (en) | 2009-10-23 | 2013-05-07 | Nec Infrontia Corporation | Image display apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| ITTO920351A1 (en) | 1992-10-19 |
| GB9108297D0 (en) | 1991-06-05 |
| ITTO920351A0 (en) | 1992-04-17 |
| DE4212558A1 (en) | 1992-10-22 |
| FR2675515A1 (en) | 1992-10-23 |
| GB9207456D0 (en) | 1992-05-20 |
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| Date | Code | Title | Description |
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| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |