EP0660765A1 - Verfahren zur herstellung von faserverbund-feingussteilen - Google Patents
Verfahren zur herstellung von faserverbund-feingussteilenInfo
- Publication number
- EP0660765A1 EP0660765A1 EP93918973A EP93918973A EP0660765A1 EP 0660765 A1 EP0660765 A1 EP 0660765A1 EP 93918973 A EP93918973 A EP 93918973A EP 93918973 A EP93918973 A EP 93918973A EP 0660765 A1 EP0660765 A1 EP 0660765A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- model
- mold
- che
- fibers
- preform
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/02—Pretreatment of the fibres or filaments
- C22C47/025—Aligning or orienting the fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/1208—Containers or coating used therefor
- B22F3/1258—Container manufacturing
- B22F3/1275—Container manufacturing by coating a model and eliminating the model before consolidation
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/02—Pretreatment of the fibres or filaments
- C22C47/06—Pretreatment of the fibres or filaments by forming the fibres or filaments into a preformed structure, e.g. using a temporary binder to form a mat-like element
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/02—Pretreatment of the fibres or filaments
- C22C47/06—Pretreatment of the fibres or filaments by forming the fibres or filaments into a preformed structure, e.g. using a temporary binder to form a mat-like element
- C22C47/062—Pretreatment of the fibres or filaments by forming the fibres or filaments into a preformed structure, e.g. using a temporary binder to form a mat-like element from wires or filaments only
- C22C47/068—Aligning wires
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/08—Making alloys containing metallic or non-metallic fibres or filaments by contacting the fibres or filaments with molten metal, e.g. by infiltrating the fibres or filaments placed in a mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
Definitions
- the invention relates to a process for the production of fiber composite parts.
- a method for producing precision castings in which a model is formed using a model material, then a ceramic mold is built around the model, then the model material is melted, burned and / or gasified and finally liquid metal is injected into the model Form is introduced.
- Such a process can be used to produce precision castings of very complex geometry. Due to such a geometry and due to the fact that the ceramic mold formed by this process can only withstand relatively low pressures when the liquid metal is introduced into the mold, the use of reinforcing fibers, that is to say the production of fiber composite investment castings, is not yet carried out in this process practiced.
- the object of the present invention is now to provide a method which enables the production of fiber-bonded precision castings with an acceptable manufacturing outlay.
- REPLACEMENT LEAF Form is built up and that the model material is then removed and finally metal is introduced into the mold in liquid, liquid-solid or powder form, the metal being at least partially liquefied in the mold in the case of a powdery introduction.
- a forebody offers extensive freedom of design. The fore body can thus be easily adapted to the casting to be produced. This allows the fiber orientation and the intended material reinforcement in the cast part to be achieved at the desired locations.
- the model material is removed by melting and / or burning out and / or gasifying and / or triggering.
- fibers with special mechanical and / or physical and / or chemical properties are used.
- the fibers can therefore be selected with a view to the properties desired in each case.
- mineral fibers are used as fibers.
- This can be Al2 ⁇ 3 or SiC fibers, e.g. Are 10 ⁇ m thick.
- the handling of such fibers can be a health hazard if these fibers are exposed.
- the fibers are used in the form of a bundle of monofilaments or multi-filaments or as a woven fabric, non-woven fabric or scrim or as fiber preforms. You can choose from the options given here
- wax is used as the model 1 material.
- This model material is the most frequently used and, as a rule, the easiest to treat. Only a relatively low amount of energy is required to remove it from the mold.
- the inventive method can also be carried out so that plastic resin is used as the model material. Due to the selected fibers and also with regard to the respective spatial shape, this model material can be particularly suitable for special applications.
- the preform is freed of the model material at the ends or edges and the exposed fiber parts are fixedly embedded in the ceramic mold when it is built up. In this way, the preform can be placed particularly precisely in the shape and thus in the casting to be produced.
- the method according to the invention can also be carried out in such a way that the preform is adapted to the requirements with regard to geometry and load of the precision cast part to be produced by appropriate shaping.
- the model is formed solely from at least one preform.
- the preform can therefore immediately assume the shape of the cast part to be produced, so it no longer needs to be further developed by applying Model 1 material.
- Such a procedure offers advantages, particularly in the case of simple shapes.
- one or more preforms are surrounded with model material for the purpose of building a model. Sufficiently precise placement of the preform (s) in the model can also be achieved in this way.
- the pressure in the mold environment is reduced below the pressure inside the mold.
- the method according to the invention can be carried out in such a way that the pressure inside the mold is increased above the pressure in the mold environment.
- the method according to the invention does not require a permanent bond in the form of binder bridges or the like for the exact placement of the fibers. between the fibers, as is previously known when using preforms. There, binder bridges of the preforms hinder the metal infiltration. Such bridges can be dispensed with in the method according to the invention because the fibers in the preform are held by the model material until the mold cavity is closed and then the model material is removed.
- FIG. 3 shows an embodiment of a half of an injection molding tool with inserted pre-body in 5 top view and side view
- FIG. 4 shows a further exemplary embodiment of a half of an injection mold with an inserted pre-body
- FIG. 5 shows a finished model with the fiber parts exposed at the ends
- FIG. 6 shows the model according to FIG. 5 embedded in a molded shell.
- Fig. 1 is shown schematically how strand-shaped from "endless" fibers 1 to the desired length
- FIG. 2 shows some examples of different cross sections of such preforms 2. In this way, profiles with a high packing density of the fibers as well as profiles with a high section modulus and combinations thereof can be realized.
- a flat preform 7 is also shown, which e.g. can be created in the form of a fabric.
- Fig. 3 shows an embodiment of a half 8 of a 35 injection molding tool consisting of two halves.
- a preform 2 is inserted, around which a model 9 is built.
- the preform 2 projects beyond the model 9 at both ends.
- the preform 2 is injection molded with model wax through an injection channel 10 and thus the model contour is filled.
- FIG. 4 shows an exemplary embodiment of a half 12 of an injection mold, in which inserted pre-bodies 2 do not emerge from the model body. Winding devices can be used to insert the preforms 2 into reproducible model positions in the injection mold. After the injection mold has been closed, model wax is also injected here, which encloses the preform (s), so that a model is formed.
- FIG. 5 shows a finished model with the exposed fiber ends. These ends serve to fix the fibers 1 in an investment casting shell.
- the exposed fiber parts are surrounded by ceramic slips and sanding material used in the production of the investment mold shell and are thus firmly anchored in the resulting molded shell.
- the model material is then melted out, burned out, gasified or triggered. When the metal is introduced, the fibers thus anchored in the molded shell can no longer be moved out of their predetermined, desired position.
- FIG. 6 finally shows the model according to FIG. 5 in an investment casting shell formed from ceramic layer and sanding material.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4230970A DE4230970C1 (de) | 1992-09-16 | 1992-09-16 | Verfahren zur Herstellung von Feingussteilen |
DE4230970 | 1992-09-16 | ||
PCT/DE1993/000836 WO1994006582A1 (de) | 1992-09-16 | 1993-09-10 | Verfahren zur herstellung von faserverbund-feingussteilen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0660765A1 true EP0660765A1 (de) | 1995-07-05 |
EP0660765B1 EP0660765B1 (de) | 1998-01-07 |
Family
ID=6468089
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93918973A Expired - Lifetime EP0660765B1 (de) | 1992-09-16 | 1993-09-10 | Verfahren zur herstellung von faserverbund-feingussteilen |
Country Status (5)
Country | Link |
---|---|
US (1) | US5649585A (de) |
EP (1) | EP0660765B1 (de) |
CA (1) | CA2144655A1 (de) |
DE (2) | DE4230970C1 (de) |
WO (1) | WO1994006582A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6776219B1 (en) | 1999-09-20 | 2004-08-17 | Metal Matrix Cast Composites, Inc. | Castable refractory investment mold materials and methods of their use in infiltration casting |
PT1534451E (pt) | 2002-08-20 | 2007-05-31 | Ex One Corp | Processo de fundição |
DE10323720A1 (de) * | 2003-05-24 | 2004-12-30 | Daimlerchrysler Ag | Verfahren zur Herstellung eines Werkstücks aus einem Verbundmaterial |
DE10332367B4 (de) * | 2003-07-17 | 2008-02-14 | Ks Aluminium-Technologie Ag | Verfahren zur Herstellung von metallischen Gussteilen mittels des Vollformgießens |
US9649687B2 (en) | 2014-06-20 | 2017-05-16 | United Technologies Corporation | Method including fiber reinforced casting article |
CN109304452A (zh) * | 2018-11-02 | 2019-02-05 | 罗源县白塔乡企业服务中心 | 一种铜铝双金属复合材料的制备方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1508655C3 (de) * | 1965-10-16 | 1974-08-29 | Gruenzweig + Hartmann Und Glasfaser Ag, 6700 Ludwigshafen | Anorganischer Überzug für ein vergasbares Gießmodell und dessen Anwendung |
JPS5768261A (en) * | 1980-10-15 | 1982-04-26 | Komatsu Ltd | Production of turbine impeller |
US4476916A (en) * | 1981-07-27 | 1984-10-16 | Nusbaum Henry J | Method of casting metal matrix composite in ceramic shell mold |
JPS5829564A (ja) * | 1981-08-17 | 1983-02-21 | Mazda Motor Corp | 繊維強化複合体の製造方法 |
DE3532183A1 (de) * | 1985-09-10 | 1986-01-30 | Hans 8450 Amberg Haimerl | Metallgussverfahren zur herstellung duennwandiger gegenstaende ohne mechanischen gussvorgang |
DE3728918A1 (de) * | 1987-08-29 | 1989-03-09 | Monforts Eisengiesserei | Gusskoerpermodell und verfahren zum herstellen eines hohlen gusskoerpers |
WO1989009669A1 (en) * | 1988-04-15 | 1989-10-19 | Sandvik Australia Pty. Limited | Composite hard metal-metal components |
JPH0489155A (ja) * | 1990-08-02 | 1992-03-23 | Hitachi Metal Precision Ltd | 複合部を有する精密鋳造品の製造方法 |
US5394930A (en) * | 1990-09-17 | 1995-03-07 | Kennerknecht; Steven | Casting method for metal matrix composite castings |
JPH04143063A (ja) * | 1990-10-04 | 1992-05-18 | Sankyo Eng Kk | 強化材添加複合鋳物の製造方法 |
-
1992
- 1992-09-16 DE DE4230970A patent/DE4230970C1/de not_active Expired - Fee Related
-
1993
- 1993-09-10 WO PCT/DE1993/000836 patent/WO1994006582A1/de active IP Right Grant
- 1993-09-10 US US08/397,264 patent/US5649585A/en not_active Expired - Fee Related
- 1993-09-10 DE DE59307953T patent/DE59307953D1/de not_active Expired - Fee Related
- 1993-09-10 CA CA002144655A patent/CA2144655A1/en not_active Abandoned
- 1993-09-10 EP EP93918973A patent/EP0660765B1/de not_active Expired - Lifetime
Non-Patent Citations (3)
Title |
---|
143 063 (SANKIYOU ENJINIARINGU KK) 18. Mai 1992 * |
PATENT ABSTRACTS OF JAPAN vol. 16, no. 422 (M-1305)4. September 1992 & JP,A,04 * |
See also references of WO9406582A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0660765B1 (de) | 1998-01-07 |
CA2144655A1 (en) | 1994-03-31 |
DE4230970C1 (de) | 1994-07-21 |
US5649585A (en) | 1997-07-22 |
DE59307953D1 (de) | 1998-02-12 |
WO1994006582A1 (de) | 1994-03-31 |
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