EP0276593A1 - Verfahren zur Herstellung von eine keramische Einlage enthaltenden metallischen Gussstücken - Google Patents
Verfahren zur Herstellung von eine keramische Einlage enthaltenden metallischen Gussstücken Download PDFInfo
- Publication number
- EP0276593A1 EP0276593A1 EP87402809A EP87402809A EP0276593A1 EP 0276593 A1 EP0276593 A1 EP 0276593A1 EP 87402809 A EP87402809 A EP 87402809A EP 87402809 A EP87402809 A EP 87402809A EP 0276593 A1 EP0276593 A1 EP 0276593A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- insert
- metal
- ceramic
- electro
- deposition
- 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
Images
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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/02—Electrophoretic coating characterised by the process with inorganic material
Definitions
- the present invention relates to a method for manufacturing cast metal parts, in particular of light alloy comprising an insert of ceramic material.
- the insert can for example function as an internal coating on parts such as pipes or exhaust manifolds in order to thermally insulate them.
- the parts thus obtained combine the properties of mechanical strength, lightness and thermal insulation.
- the method according to the invention aims to remedy these difficulties.
- This process is characterized in that, before the casting of the metal, a flexible mattress of ceramic fibers is deposited on the insert by electro-deposition, for example by anaphoresis.
- a metal part 1 comprising an insert 2 of ceramic material
- the insert is made to the desired shape, a flexible mattress 3 of fibers of ceramic material is deposited on this insert, and a mold 4 is placed in a mold. the insert thus coated and the metal 1 is poured into the mold ( Figure 2).
- the insert 2 is made electrically conductive by a metallic deposit 5 in a thin layer, this deposit being effected by means of a plasma, a paint or a varnish, the insert with its deposit is immersed in a bath 6 made up of ceramic fibers and colloidal silica suspended in water, and the metal deposit 5 is connected to the positive pole of a voltage source of which the negative pole is connected to one electrode 7 immersed in suspension 6; the ceramic fibers of the suspension are thus deposited by anaphoresis on the insert 2 to form the fiber mat 3.
- the colloidal silica in suspension 6 has a triple role: - modify the pH of the suspension to make it electrically conductive. - entrain the fibers towards the surface of the part 2 to be coated. - Ensure the cohesion of the fibers between them on the surface of part 2 and bind the deposit to the surface of the part (role of cement, silica depositing in the form of gel).
- the mattress 3 can be produced in a few minutes; for example in five to ten minutes, in the case of a mattress two millimeters thick.
- the insert After formation of the mattress 3, the insert is dried in ambient air and then steamed to remove the excess water; high temperature heat treatment dehydrates the gel and sinter the silica.
- the deformation power of the fibrous mat obtained 3 depends on the concentration of silica in the bath (percentage of silica / percentage of fibers deposited), that is to say the ratio between the percentage of silica and that of fibers deposited.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8618129A FR2608476B1 (fr) | 1986-12-18 | 1986-12-18 | Procede de fabrication de pieces metalliques coulees comportant un insert en matiere ceramique |
FR8618129 | 1986-12-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0276593A1 true EP0276593A1 (de) | 1988-08-03 |
EP0276593B1 EP0276593B1 (de) | 1990-02-07 |
Family
ID=9342268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19870402809 Expired - Lifetime EP0276593B1 (de) | 1986-12-18 | 1987-12-11 | Verfahren zur Herstellung von eine keramische Einlage enthaltenden metallischen Gussstücken |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0276593B1 (de) |
DE (1) | DE3761614D1 (de) |
FR (1) | FR2608476B1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0440093A1 (de) * | 1990-01-26 | 1991-08-07 | Isuzu Motors Limited | Gusswerkstück mit keramischer Verstärkungseinlage und Verfahren zu dessen Herstellung |
DE19814018A1 (de) * | 1998-03-28 | 1999-09-30 | Andreas Roosen | Verfahren zur Herstellung von Verbundwerkstoffen mit mindestens einer keramischen Komponente |
US10493677B2 (en) * | 2014-11-21 | 2019-12-03 | Solvay Specialty Polymers Usa, Llc | Overmolded inserts and methods for forming the same |
EP4166257A1 (de) * | 2021-10-13 | 2023-04-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verbundgussverfahren unter verformung eines einlegeteils zur vermeidung von ein- oder abrissen zwischen gussmetall und einlegeteil sowie verbundbauteil |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1228449B (it) * | 1989-02-22 | 1991-06-19 | Temav Spa | Procedimento per ottenere un legame metallurgico tra un materiale metallico o composito a matrice metallica e un getto di metallo o di lega metallica. |
US5616421A (en) * | 1991-04-08 | 1997-04-01 | Aluminum Company Of America | Metal matrix composites containing electrical insulators |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB860290A (en) * | 1957-07-19 | 1961-02-01 | Platecraft Of America Inc | Electroformed article and a method of making the same |
DE2430753A1 (de) * | 1973-07-31 | 1975-02-13 | Nissan Motor | Verfahren zum aufbringen eines gammaaluminiumoxydueberzugs auf die oberflaeche eines feuerfesten formkoerpers |
US3966576A (en) * | 1974-07-15 | 1976-06-29 | Ppg Industries, Inc. | Electrophoretic deposition of asbestos diaphragms |
US4318438A (en) * | 1977-09-27 | 1982-03-09 | Honda Giken Kogyo Kabushiki Kaisha | Method for casting a fiber-reinforced composite article |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5964150A (ja) * | 1982-10-06 | 1984-04-12 | Toyota Motor Corp | セラミツクスと金属の接合方法 |
JPS60240366A (ja) * | 1984-05-15 | 1985-11-29 | Toyota Motor Corp | セラミツクス体の鋳ぐるみ方法 |
-
1986
- 1986-12-18 FR FR8618129A patent/FR2608476B1/fr not_active Expired
-
1987
- 1987-12-11 DE DE8787402809T patent/DE3761614D1/de not_active Expired - Fee Related
- 1987-12-11 EP EP19870402809 patent/EP0276593B1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB860290A (en) * | 1957-07-19 | 1961-02-01 | Platecraft Of America Inc | Electroformed article and a method of making the same |
DE2430753A1 (de) * | 1973-07-31 | 1975-02-13 | Nissan Motor | Verfahren zum aufbringen eines gammaaluminiumoxydueberzugs auf die oberflaeche eines feuerfesten formkoerpers |
US3966576A (en) * | 1974-07-15 | 1976-06-29 | Ppg Industries, Inc. | Electrophoretic deposition of asbestos diaphragms |
US4318438A (en) * | 1977-09-27 | 1982-03-09 | Honda Giken Kogyo Kabushiki Kaisha | Method for casting a fiber-reinforced composite article |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN, vol. 10, no. 109 (M-472), 23 avril 1986; & JP-A-60 240 366 (TOYOTA JIDOSHA K.K.) 29-11-1985 * |
PATENT ABSTRACTS OF JAPAN, vol. 11, no. 184 (C-427)[2631], 12 juin 1987; & JP-A-62 004 844 (TOSHIBA CORP.) 10-01-1987 * |
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 170 (M-315), 7 août 1984; & JP-A-59 064 150 (TOYOTA JIDOSHA K.K.) 12-04-1984 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0440093A1 (de) * | 1990-01-26 | 1991-08-07 | Isuzu Motors Limited | Gusswerkstück mit keramischer Verstärkungseinlage und Verfahren zu dessen Herstellung |
DE19814018A1 (de) * | 1998-03-28 | 1999-09-30 | Andreas Roosen | Verfahren zur Herstellung von Verbundwerkstoffen mit mindestens einer keramischen Komponente |
US10493677B2 (en) * | 2014-11-21 | 2019-12-03 | Solvay Specialty Polymers Usa, Llc | Overmolded inserts and methods for forming the same |
EP4166257A1 (de) * | 2021-10-13 | 2023-04-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verbundgussverfahren unter verformung eines einlegeteils zur vermeidung von ein- oder abrissen zwischen gussmetall und einlegeteil sowie verbundbauteil |
Also Published As
Publication number | Publication date |
---|---|
FR2608476A1 (fr) | 1988-06-24 |
DE3761614D1 (de) | 1990-03-15 |
EP0276593B1 (de) | 1990-02-07 |
FR2608476B1 (fr) | 1989-05-12 |
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