WO2000032335A1 - Verbundgussteil und verfahren zu seiner herstellung - Google Patents
Verbundgussteil und verfahren zu seiner herstellung Download PDFInfo
- Publication number
- WO2000032335A1 WO2000032335A1 PCT/DE1999/003886 DE9903886W WO0032335A1 WO 2000032335 A1 WO2000032335 A1 WO 2000032335A1 DE 9903886 W DE9903886 W DE 9903886W WO 0032335 A1 WO0032335 A1 WO 0032335A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- insert
- composite casting
- matrix
- casting according
- composite
- Prior art date
Links
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
- B22D19/02—Casting in, on, or around objects which form part of the product for making reinforced articles
-
- 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
Definitions
- the invention relates to a composite casting with a metallic matrix and at least one purely metallic, metallurgically manufactured insert located in the matrix.
- Such a composite casting is known from EP 0 419 684 AI.
- the friction surface has a regular microrelief, which is formed by the matrix and the front end of the framework projecting above its surface.
- the scaffold can be designed in the form of a cell structure or a corrugated band, among other things. It is disclosed to make these structures by forming massive metal strips. This procedure is very complex, particularly in the case of the cell structure, in particular in the case of cell sizes of the order of a few millimeters. Brittle and high-strength metals or metal alloys are not suitable for this at all.
- composite castings are known (DE 42 11 199 AI), in which the insert consists of hard metal balls or hard material particles enclosed between perforated sheets.
- a so-called alloy box which contains hard material particles, can also be produced and cast from such sheets by inserting welding spots.
- the prior art using building blocks, support cores and perforated metal sheets has the particular disadvantage that the contour of the composite casting cannot be represented at all or only with great difficulty, and the inserts have to be constructed from several individual parts and connected to one another.
- DE 39 17 033 C1 discloses porous, open-pore metallic sponge structures. It is disclosed to use these structures to produce an implant as a bone replacement or within filters. Such a structure is also known from DE 28 43 316 AI, in which it is disclosed, this for heat exchangers, mixers or separators for liquids and / or gases, sound absorption or insulating material, damper material, catalysts, flame extinguishing materials, wick materials for heat pipes, To use decorative materials etc. The use of such structures within composite castings is neither known nor suggested from the aforementioned publications.
- composite bodies with a metallic matrix and a sponge-structured ceramic insert are known (DE 197 28 358 AI). These have the disadvantage in particular that the expansion coefficients of the materials connected to one another are very different, which can lead to problems with regard to the stability of the composite body. In addition, there is no material connection between the insert and the matrix material.
- Metal foams are also known (J. Banhart et al .; Aluminum 1994 3/4; p. 209), which are produced from a mixture of a metal powder with a blowing agent. For this purpose, the pressed and shaped mixture is brought to a temperature above the melting point of the metal. The blowing agent releases a gas, which creates the foam structure of the material. In contrast to the sponge structure, the foam structure is characterized by closed pores. The pores located within the foam body can therefore not be filled by another material to form a composite material.
- the present invention is based on the object of providing a composite casting of the type mentioned at the outset, in which the above-described disadvantages of the prior art can largely be avoided, and of performing a process for its production.
- the at least one insert has at least part of an open-pore sponge structure and the pores of the insert are essentially completely filled with the material of the matrix.
- the sponge structure of the insert essentially consists of webs that are statistically distributed in the room and converge at nodes.
- the very large surface area of the insert part in relation to the volume and the good heat transfer between the insert part and the liquefied matrix material when the insert part is poured around enable an intensive material connection between the insert part and the matrix. But even without a material connection, a stable anchoring of the insert in the matrix can be ensured in the case of a pure positive fit due to the large number of webs and the small pore size.
- the use of the porous sponge structures in particular enables the use of high-strength metal alloys as the material for the insert.
- the inserts can be made in almost any shape and therefore hardly limit the possible shapes of the composite castings.
- the properties of the composite casting are to be influenced in the desired manner with the insert.
- the statistical distribution of the webs of the insert part in space means that the influence of the insert part can be designed independently of spatial directions, that is, for example, an isotropic material reinforcement can be achieved.
- the composite casting according to the invention can also be used as a starting product for castings with locally limited alloy areas, in that the insert is completely melted in the matrix.
- the open-pore sponge structure of the insert ensures one largely uniform alloying.
- the finely branched open-pore sponge structure contributes significantly to the fact that the matrix material forms an intimate connection with it without the insert having to be preheated or coated. This behavior is also guaranteed with thin-walled composite castings to be reinforced.
- the volume proportion of the insert in the composite casting can be from 3% to 95%.
- the composite casting according to the invention can advantageously be used for the production of grate bars, shredder hammers, grinding plates, sliding bushes, bearing shells, machine guides and the like.
- the composite casting according to the invention can also be designed such that it is composed of 3% to 15% by volume of the material of the insert and 85% to 97% by volume of the pore-filling material of the matrix in the area of the open-pore sponge structure of the insert.
- the composite casting according to the invention can also be designed such that the at least one insert passes through the surface of the composite casting at least in partial areas. This can be advantageous in particular when the surface of the composite casting is exposed to increased stress.
- the composite casting according to the invention can be designed such that the at least one insert part is arranged close to the surface, at least in some areas, the surface above being formed solely by the material of the matrix.
- the material of the insert part can be protected, for example, against harmful influences of the environment, for example corrosion. It can be useful to influence the properties of the areas near the surface by the insert alone, for example to increase the rigidity of the material if the properties of the matrix material are required on the surface itself.
- the at least one insert part consists of a wear-resistant metal or a wear-resistant metal alloy and the matrix consists of a metal which is ductile relative to the at least one insert part or a ductile metal alloy.
- the composite casting still has a certain ductility, but on the other hand the structures of the insert ensure a high wear resistance of the composite casting surface, for example in the case of abrasive stress or when used under high temperatures or strong temperature changes.
- an insert made of a soft metal such as nickel or copper
- the matrix made of a hard material for example wear-resistant steel
- An insert made of a hard metal, for example stellite can also be combined with a hard matrix, for example made of wear-resistant or heat-resistant steel.
- the choice of related materials for the insert and the matrix can be very advantageous for casting around the sponge structure.
- the composite casting according to the invention can advantageously also be designed such that the at least one insert is positioned alone in certain areas of the composite casting.
- the material composite can be limited to areas of the composite casting that are particularly stressed, for example to an area with a friction surface. As a result, costs and procedures can be reduced.
- the composite casting according to the invention can be designed such that the transitions between the at least one insert and the matrix are graded.
- Various combinations of metals or metal alloys allow an essentially continuous transition from the matrix material to the material of the insert part, ie starting from a web of the insert part, an alloy of insert material and matrix material follows, in which the concentration of the matrix material increases with increasing distance from the web, until the latter is largely in pure form.
- a suitable temperature and quantity of the material to be poured in this can already result from the pouring process.
- a grading of the transitions could be achieved, for example, by briefly melting the insert surface when pouring the matrix material.
- the strength of the graded transition can be influenced by tempering the insert and / or controlling the cooling of the freshly cast composite casting.
- a graded matrix transition together with possibly small pore sizes of a few millimeters or smaller ensures that stresses, for example due to different coefficients of thermal expansion, are minimized.
- the composite casting according to the invention can also be designed such that the insert is partly solid.
- the composite casting according to the invention can also be designed in such a way that at least one area of increased wear resistance is provided, in which the pore size in the insert is smaller on average and / or the web thickness is larger on average than in the remaining portion of the insert. Due to the spatial variation of the pore size and / or the web thickness, local differences in the stress on the composite casting can be taken into account.
- the pore size and / or the web thickness can vary in degrees.
- the composite casting according to the invention can also be designed such that the melting temperature of the matrix material exceeds the melting temperature of the material of the insert. It is a surprising effect that even with a proportion of the matrix material of up to 95% by volume in the area of the sponge structure and with melting temperature differences of up to 200 ° C., the insert is not melted when the matrix material is cast around it. Possibly protective shells made of the matrix material form around the webs when the insert is cast around due to the high temperature differences. In any case, microscopic analyzes show the stock of the webs in the finished composite casting, even with the material and quantity combinations mentioned above.
- the composite casting according to the invention can be produced in that the material of the matrix is introduced into the insert by casting.
- the known investment casting, gravity casting, low pressure casting and die casting processes are used.
- Fig. 5 a composite casting similar to Figure 1 with a solid surface of the insert.
- Figure 1 shows a composite casting 1, which is shown partly in section, partly in an oblique view.
- this composite casting 1 contains an insert 2, the structure of which penetrates the surface 3 of the composite casting 1.
- the insert 2 consists of a hard cobalt stellite, which increases the abrasion resistance of the surface 3.
- the matrix 4 of the composite casting 1 consists of an austenite, so that even after its manufacture, the composite casting still has a ductility which is sufficient for any necessary forming.
- Figure 2 shows an insert 2, which is composed of a solid part 5 and a sponge-structured part 6.
- FIG. 3 shows the structure of the open-pore sponge structure of the metallic insert 2.
- the open-pore structure of the structure ensures that cast-in metal can penetrate the insert 2 well.
- a mutual alloy takes place. Discontinuous transitions can also be achieved.
- the connection between the matrix 4 and the insert 2 is stable, since the large number of webs 7 and possibly also the sharpness of the web edges can ensure a good positive fit.
- FIG. 4 shows a section of a composite casting 9 with an insert 10, in which a surface 11 has a regular lattice structure. This surface 11 simultaneously forms a partial area of the surface 12 of the composite casting 9. The remaining part of the insert part has the open-pore sponge structure already described above.
- FIG. 5 shows a composite cast part 13 in which an insert part 14 which is positioned in a manner corresponding to FIG. 4 is arranged. However, instead of the grid-structured surface 11 (FIG. 4), this insert part 14 has a solid surface 15 made of the material of the insert part 14.
- Inserts with a metallic, open-pore sponge structure can also be easily manufactured for high-temperature resistant materials such as cobalt stellite.
- a polyurethane foam with broken cell membranes i.e. with an open-pore sponge structure, serves as the starting material. If necessary, this foam can be thickened with wax or a two-component synthetic resin.
- the model made of polyurethane is surrounded by a ceramic molding material, for example a silicate-bonded ceramic slip, or finished molding compounds based on phosphate. After the molding material has set, the polyurethane foam is burned out and then the necessary strength is given by firing the ceramic mold. The ceramic mold can then be cast with the metallic high-temperature material. Differential pressure or centrifugal casting processes can be used for this.
- the ceramic form can be removed mechanically by water jet, sandblast or ultrasound or removed by chemical attack.
- the sponge structure of the insert is encapsulated with the matrix material.
- investment casting, gravity, low pressure and die casting processes can be used for casting.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT99964403T ATE233626T1 (de) | 1998-12-03 | 1999-12-03 | Verbundgussteil und verfahren zu seiner herstellung |
EP99964403A EP1135226B1 (de) | 1998-12-03 | 1999-12-03 | Verbundgussteil und verfahren zu seiner herstellung |
JP2000585014A JP2002531270A (ja) | 1998-12-03 | 1999-12-03 | 複合鋳造品 |
DE59904491T DE59904491D1 (de) | 1998-12-03 | 1999-12-03 | Verbundgussteil und verfahren zu seiner herstellung |
AU30307/00A AU3030700A (en) | 1998-12-03 | 1999-12-03 | Composite casting and method for the production thereof |
DE19982528T DE19982528D2 (de) | 1998-12-03 | 1999-12-03 | Verbundgussteil und Verfahren zu seiner Herstellung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19855841.4 | 1998-12-03 | ||
DE19855841 | 1998-12-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000032335A1 true WO2000032335A1 (de) | 2000-06-08 |
Family
ID=7889882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1999/003886 WO2000032335A1 (de) | 1998-12-03 | 1999-12-03 | Verbundgussteil und verfahren zu seiner herstellung |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1135226B1 (de) |
JP (1) | JP2002531270A (de) |
AT (1) | ATE233626T1 (de) |
AU (1) | AU3030700A (de) |
DE (2) | DE19982528D2 (de) |
WO (1) | WO2000032335A1 (de) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1256403A2 (de) * | 2001-05-11 | 2002-11-13 | Schwäbische Hüttenwerke GmbH | Metallgussformkörper mit eingegossenem Hartstoffkörper |
DE10121861B4 (de) * | 2001-05-05 | 2005-02-17 | Hydro Aluminium Deutschland Gmbh | Aus Leichtmetallwerkstoff gegossenes Motorelement und Verstärkungselement |
EP1574272A1 (de) * | 2002-12-10 | 2005-09-14 | NHK Spring Co., Ltd. | Verbundwerkstoffelement und herstellungsverfahren daf r |
DE102004047850A1 (de) * | 2004-09-29 | 2006-04-06 | Georg Fischer Gmbh & Co.Kg | Gussformteil mit hoher Festigkeit |
DE10122886B4 (de) * | 2001-05-11 | 2006-09-14 | Shw Casting Technologies Gmbh | Bearbeitungskörper mit eingegossenem Hartstoffkörper zum Zerkleinern eines Aufgabeguts |
DE102008032271A1 (de) | 2007-07-30 | 2009-02-12 | Ambos, Eberhard, Prof. Dr.-Ing. | Hartstoffkörper für Formgussteile und Verfahren zu seiner Herstellung |
AT503824B1 (de) * | 2006-07-13 | 2009-07-15 | Huette Klein Reichenbach Gmbh | Metallformkörper und verfahren zu dessen herstellung |
DE10260487B4 (de) * | 2002-12-21 | 2015-02-12 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Einlegeteile für einen Kurbelwellenlagerverbund |
DE102017119257A1 (de) * | 2017-08-23 | 2019-02-28 | Man Truck & Bus Ag | Tragbock für ein lenkergeführtes Doppelachsaggregat |
US20190112445A1 (en) * | 2016-03-21 | 2019-04-18 | Central South University | Foam skeleton reinforced composite, preparation method therefor, and application thereof |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101268647B1 (ko) * | 2008-10-06 | 2013-05-29 | 디사 인더스트리즈 에이/에스 | 성형 기계의 성형 챔버의 라이닝을 위한 라이닝 플레이트 |
Citations (9)
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DE2843316A1 (de) * | 1977-12-16 | 1979-06-28 | Hitachi Ltd | Verfahren zum erzeugen eines dreidimensional-netzwerkartigen, poroesen, metallischen gefueges mit zusammenhaengendem innenhohlraum |
DE3418405A1 (de) * | 1983-05-18 | 1984-11-29 | Mazda Motor Corp., Hiroshima | Verfahren zur herstellung von gussteilen aus aluminiumlegierung und aus einer aluminiumlegierung bestehender kolben |
JPS60114531A (ja) * | 1983-11-25 | 1985-06-21 | Toyota Motor Corp | 合金の製造方法 |
JPS62104663A (ja) * | 1985-10-31 | 1987-05-15 | Mazda Motor Corp | 摺接部材およびその製造方法 |
DE3917033C1 (de) * | 1989-05-26 | 1990-08-02 | Olaf 2000 Hamburg De Ahlers | |
EP0419684A1 (de) * | 1989-04-04 | 1991-04-03 | Zaporozhsky Avtomobilny Zavod 'kommunar' (Proizvodstvennoe Obiedinenie 'avtozaz') | Reibungselement eines reibungspaares |
DE4112000A1 (de) * | 1991-03-23 | 1992-09-24 | Karl Lange | Verfahren zur herstellung von verschleissgeschuetzten gussstuecken |
JPH06106329A (ja) * | 1992-09-29 | 1994-04-19 | Mazda Motor Corp | 軽合金製複合部材の製造方法 |
DE19728358A1 (de) * | 1996-07-06 | 1998-01-08 | Thyssen Guss Ag | Verfahren zur Herstellung von lokal keramikverstärkten, gegossenen Bremsscheiben aus Leichtmetallegierungen |
-
1999
- 1999-12-03 AU AU30307/00A patent/AU3030700A/en not_active Abandoned
- 1999-12-03 DE DE19982528T patent/DE19982528D2/de not_active Ceased
- 1999-12-03 DE DE59904491T patent/DE59904491D1/de not_active Expired - Fee Related
- 1999-12-03 AT AT99964403T patent/ATE233626T1/de not_active IP Right Cessation
- 1999-12-03 WO PCT/DE1999/003886 patent/WO2000032335A1/de active IP Right Grant
- 1999-12-03 JP JP2000585014A patent/JP2002531270A/ja active Pending
- 1999-12-03 EP EP99964403A patent/EP1135226B1/de not_active Expired - Lifetime
Patent Citations (9)
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DE2843316A1 (de) * | 1977-12-16 | 1979-06-28 | Hitachi Ltd | Verfahren zum erzeugen eines dreidimensional-netzwerkartigen, poroesen, metallischen gefueges mit zusammenhaengendem innenhohlraum |
DE3418405A1 (de) * | 1983-05-18 | 1984-11-29 | Mazda Motor Corp., Hiroshima | Verfahren zur herstellung von gussteilen aus aluminiumlegierung und aus einer aluminiumlegierung bestehender kolben |
JPS60114531A (ja) * | 1983-11-25 | 1985-06-21 | Toyota Motor Corp | 合金の製造方法 |
JPS62104663A (ja) * | 1985-10-31 | 1987-05-15 | Mazda Motor Corp | 摺接部材およびその製造方法 |
EP0419684A1 (de) * | 1989-04-04 | 1991-04-03 | Zaporozhsky Avtomobilny Zavod 'kommunar' (Proizvodstvennoe Obiedinenie 'avtozaz') | Reibungselement eines reibungspaares |
DE3917033C1 (de) * | 1989-05-26 | 1990-08-02 | Olaf 2000 Hamburg De Ahlers | |
DE4112000A1 (de) * | 1991-03-23 | 1992-09-24 | Karl Lange | Verfahren zur herstellung von verschleissgeschuetzten gussstuecken |
JPH06106329A (ja) * | 1992-09-29 | 1994-04-19 | Mazda Motor Corp | 軽合金製複合部材の製造方法 |
DE19728358A1 (de) * | 1996-07-06 | 1998-01-08 | Thyssen Guss Ag | Verfahren zur Herstellung von lokal keramikverstärkten, gegossenen Bremsscheiben aus Leichtmetallegierungen |
Non-Patent Citations (3)
Title |
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PATENT ABSTRACTS OF JAPAN vol. 009, no. 267 (C - 310) 24 October 1985 (1985-10-24) * |
PATENT ABSTRACTS OF JAPAN vol. 011, no. 321 (M - 633) 20 October 1987 (1987-10-20) * |
PATENT ABSTRACTS OF JAPAN vol. 018, no. 380 (M - 1639) 18 July 1994 (1994-07-18) * |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10121861B4 (de) * | 2001-05-05 | 2005-02-17 | Hydro Aluminium Deutschland Gmbh | Aus Leichtmetallwerkstoff gegossenes Motorelement und Verstärkungselement |
EP1256403A3 (de) * | 2001-05-11 | 2004-09-15 | Schwäbische Hüttenwerke GmbH | Metallgussformkörper mit eingegossenem Hartstoffkörper |
EP1256403A2 (de) * | 2001-05-11 | 2002-11-13 | Schwäbische Hüttenwerke GmbH | Metallgussformkörper mit eingegossenem Hartstoffkörper |
DE10122886B4 (de) * | 2001-05-11 | 2006-09-14 | Shw Casting Technologies Gmbh | Bearbeitungskörper mit eingegossenem Hartstoffkörper zum Zerkleinern eines Aufgabeguts |
DE10164975B4 (de) * | 2001-05-11 | 2009-08-20 | Shw Casting Technologies Gmbh | Bearbeitungskörper mit eingegossenem Hartstoffkörper |
US7560171B2 (en) | 2002-12-10 | 2009-07-14 | Nhk Spring Co., Ltd. | Composite material member and method for producing the same |
EP1574272A1 (de) * | 2002-12-10 | 2005-09-14 | NHK Spring Co., Ltd. | Verbundwerkstoffelement und herstellungsverfahren daf r |
EP1574272A4 (de) * | 2002-12-10 | 2006-08-09 | Nhk Spring Co Ltd | Verbundwerkstoffelement und herstellungsverfahren daf r |
DE10260487B4 (de) * | 2002-12-21 | 2015-02-12 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Einlegeteile für einen Kurbelwellenlagerverbund |
DE102004047850A1 (de) * | 2004-09-29 | 2006-04-06 | Georg Fischer Gmbh & Co.Kg | Gussformteil mit hoher Festigkeit |
AT503824B1 (de) * | 2006-07-13 | 2009-07-15 | Huette Klein Reichenbach Gmbh | Metallformkörper und verfahren zu dessen herstellung |
US8435644B2 (en) | 2006-07-13 | 2013-05-07 | Huette Klein-Reichenbach Gesellschaft M.B.H | Metal moulding and method for producing it |
DE102008032271A1 (de) | 2007-07-30 | 2009-02-12 | Ambos, Eberhard, Prof. Dr.-Ing. | Hartstoffkörper für Formgussteile und Verfahren zu seiner Herstellung |
US20190112445A1 (en) * | 2016-03-21 | 2019-04-18 | Central South University | Foam skeleton reinforced composite, preparation method therefor, and application thereof |
US10995192B2 (en) * | 2016-03-21 | 2021-05-04 | Central South University | Composite material reinforced by foamed skeleton and preparation method and uses thereof |
DE102017119257A1 (de) * | 2017-08-23 | 2019-02-28 | Man Truck & Bus Ag | Tragbock für ein lenkergeführtes Doppelachsaggregat |
Also Published As
Publication number | Publication date |
---|---|
DE59904491D1 (de) | 2003-04-10 |
EP1135226B1 (de) | 2003-03-05 |
DE19982528D2 (de) | 2001-11-08 |
AU3030700A (en) | 2000-06-19 |
EP1135226A1 (de) | 2001-09-26 |
JP2002531270A (ja) | 2002-09-24 |
ATE233626T1 (de) | 2003-03-15 |
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