EP0349031A1 - Composite cast piece - Google Patents

Composite cast piece Download PDF

Info

Publication number
EP0349031A1
EP0349031A1 EP89201525A EP89201525A EP0349031A1 EP 0349031 A1 EP0349031 A1 EP 0349031A1 EP 89201525 A EP89201525 A EP 89201525A EP 89201525 A EP89201525 A EP 89201525A EP 0349031 A1 EP0349031 A1 EP 0349031A1
Authority
EP
European Patent Office
Prior art keywords
holding means
base body
melting temperature
composite casting
cast
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Withdrawn
Application number
EP89201525A
Other languages
German (de)
French (fr)
Inventor
Norman Seitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kolbenschmidt AG
Original Assignee
Kolbenschmidt AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kolbenschmidt AG filed Critical Kolbenschmidt AG
Publication of EP0349031A1 publication Critical patent/EP0349031A1/en
Withdrawn legal-status Critical Current

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
    • B22D19/0009—Cylinders, pistons
    • B22D19/0027—Cylinders, pistons pistons
    • 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

Definitions

  • the invention relates to a composite casting of a cast base body and by means of a holding means formed from a metallic material insert or molded therein from a material different from the material of the base body, in particular as an oscillating mass forces component of piston engines, in particular internal combustion engines.
  • DE-B-2 408 500 describes a component made of spheroidal graphite cast iron for machine and engine construction, into which a locally made of a high-strength material of low or non-iron is described Cobalt-based alloy or heat-resistant nickel-chromium-silicon-based insert is cast in.
  • a component made of spheroidal graphite cast iron for machine and engine construction into which a locally made of a high-strength material of low or non-iron is described
  • Cobalt-based alloy or heat-resistant nickel-chromium-silicon-based insert is cast in.
  • temperature-resistant, heat-insulating and / or wear-resistant insert parts in the area of the parts to be protected, such as the piston crown, top land and first piston ring groove Pour into the piston body from ceramic material.
  • cooling channels through which cooling oil can flow are arranged in the piston head, which are produced by ring-shaped hollow cores made of steel or copper or solid salt cores cast into the piston body.
  • the hollow cores must be removed from the piston body with acid and the salt cores rinsed out with water.
  • the insert parts are fastened in a self-supporting manner in the casting mold or on the casting cores by means of holding means and remain in the cast base body.
  • the holding means or parts thereof can loosen or loosen under the influence of the gas and inertial forces that change periodically during engine operation, which leads to considerable consequential damage and even failure of the internal combustion engine can.
  • This object is achieved in that there is a cohesive metallic bond between the base body and the holding means, which is achieved when the composite casting is cast by melting or melting the holding means.
  • holding means made of suitable light metal alloys with a coordinated melting temperature have significantly higher weight-specific strengths than conventional holding means made of ferrous material, over the entire operating temperature range of the composite casting are at least twice as high. This significantly increases the security against characteristic damage cases, caused by the effect of the periodically changing mass forces. In the event of overstressing of parts of the holding means that are not metallically connected to the base body, for example in inaccessible areas of the composite casting, these are conserved by plastic deformation due to the high ductility of the light metal alloys used.
  • Another advantage can be seen in the fact that commercially available semi-finished products, such as standardized welding wires made of light metal alloys, can be used for the holding means, whereas the holding means which were customary up to now had to have special geometric shapes for better anchoring.
  • the melting temperature of the material of the holding means is expediently the same as the melting temperature of the material of the base body, preferably the difference is up to 100 K, in particular up to 75 K.
  • the melting temperature of the material of the holding means is somewhat lower than the melting temperature of the material of the base body.
  • the melting temperature of the material of the holding means is somewhat higher than the melting temperature of the material of the base body.
  • holding means made of aluminum alloy of the type AlMg3 with different diameters were poured into eutectic aluminum piston alloys of the type G-AlSil2CuMgNi at a casting temperature of 973 to 1073 ° C.
  • the holding means could be melted down to a depth of 15% of the diameter and thus a solid material bond between the cast body and the holding means could be achieved.
  • Fig. 1 shows a broken-away sectional view of a holding pin (1) made of the aluminum alloy of the AlMg3 type and embedded in its one section in a sand / salt-based casting core, the other section of which is in a cast body (4) made of the eutectic aluminum-piston alloy of the type G-AlSil2CuMgNi is poured in such a way that the retaining pin (1) in the zone (3) is melted to form a metallic compound.
  • FIG. 2 shows a section along the section line A-B of FIG. 1.
  • the solidus temperature of the retaining pin (1) is approx. 90 K above that of the material of the cast body (4).

Abstract

In a casting, inserts are cast on or in with the aid of metallic holding means. In order to prevent a loosening of the holding means, a metallic bond of self substance exists between the casting and the holding means. <IMAGE>

Description

Die Erfindung betrifft ein Verbundgußstück aus gegossenem Grundkörper und mittels aus metallischem Werkstoff gebildetem Haltemittel darin ein- oder angegossenem Einlegteil aus vom Werkstoff des Grundkörpers unterschiedlichen Werkstoff, insbesondere als oszillierenden Massenkräften unterworfenes Bauteil von Kolbenmaschinen, insbesondere Brennkraftmaschinen.The invention relates to a composite casting of a cast base body and by means of a holding means formed from a metallic material insert or molded therein from a material different from the material of the base body, in particular as an oscillating mass forces component of piston engines, in particular internal combustion engines.

Das Ein- bzw. Angießen metallischer und nicht-metallischer Einlegteile ist bei der Herstellung von Gußstücken durch statischen und dynamischen Guß möglich. Derartige Verbundgußstücke sind immer dann von Interesse, wenn konstruktive und/oder technische Erfordernisse eines Gußstückes die Ausnützung der spezifisch günstigen Eigenschaften unterschiedlicher Werkstoffe notwendig machen, wobei zwischen dem gegossenen Grundkörper und dem Einlegteil entweder eine stoffschlüssige metallische Bindung oder eine als Schrumpf- oder Verzahnungshaftung bezeichnete Bindung besteht. Bei Verbundgußstücken mit einem Grundkörper aus Leichtmetall und einem Einlegteil aus Eisenwerkstoff, Kupferwerkstoff, harter Aluminiumlegierung oder Faser- bzw. Whisker-Werkstoff werden neben dem geringen Gewicht und der guten Wärmeleitfähigkeit und der chemischen Beständigkeit des Leichtmetalls die besseren mechanisch-technologischen Eigenschaften des Werkstoffs des Einlegteils benutzt.The casting or pouring of metallic and non-metallic insert parts is possible in the manufacture of castings by static and dynamic casting. Composite castings of this type are always of interest when the design and / or technical requirements of a casting make it necessary to take advantage of the specifically favorable properties of different materials, with either a cohesive metallic bond or a bond referred to as shrinkage or gear adhesion between the cast base body and the insert consists. In the case of composite castings with a base body made of light metal and an insert made of iron material, copper material, hard aluminum alloy or fiber or whisker material, in addition to the low weight and the good thermal conductivity and chemical resistance of the light metal, the better mechanical-technological properties of the material of the insert part used.

In der DE-B-2 408 500 ist ein aus Gußeisen mit Kugelgraphit bestehendes Bauteil für den Maschinen- und Motorenbau beschrieben, in das lokal ein aus einem hochfesten Werkstoff einer eisenarmen oder eisenfreien Legierung auf Kobalt-Basis oder warmfesten Legierung auf Nickel-Chrom-Silizium-Basis gebildetes Einlegteil eingegossen ist. In Fällen, in denen beispielsweise Leichtmetallkolben für Brennkraftmaschinen im Motorbetrieb vergleichsweise hohen mechanischen und/oder thermischen Belastungen ausgesetzt sind, ist es angebracht, im Bereich der zu schützenden Partien, wie insbesondere Kolbenboden, Feuersteg und erste Kolbenringnute, temperaturwechselbeständige, wärmedämmende und/oder verschleißfeste Einlegteile aus keramischem Werkstoff in den Kolbengrundkörper einzugießen. Wenn es um den reinen Wärmeschutz des Kolbens geht, sind von Kühlöl durchströmbare Kühlkanäle im Kolbenkopf angeordnet, die durch ringförmige in den Kolbengrundkörper eingegossene Hohlkerne aus Stahl oder Kupfer oder Salzvollkerne hergestellt werden. Die Hohlkerne müssen mit Säure aus dem Kolbengrundkörper herausgelöst und die Salzkerne mit Wasser herausgespült werden.DE-B-2 408 500 describes a component made of spheroidal graphite cast iron for machine and engine construction, into which a locally made of a high-strength material of low or non-iron is described Cobalt-based alloy or heat-resistant nickel-chromium-silicon-based insert is cast in. In cases where, for example, light metal pistons for internal combustion engines in engine operation are exposed to comparatively high mechanical and / or thermal loads, it is appropriate to insert temperature-resistant, heat-insulating and / or wear-resistant insert parts in the area of the parts to be protected, such as the piston crown, top land and first piston ring groove Pour into the piston body from ceramic material. When it comes to the pure heat protection of the piston, cooling channels through which cooling oil can flow are arranged in the piston head, which are produced by ring-shaped hollow cores made of steel or copper or solid salt cores cast into the piston body. The hollow cores must be removed from the piston body with acid and the salt cores rinsed out with water.

In aller Regel werden die Einlegteile mittels Haltemitteln in der Gießform oder an den Gießkernen freitragend befestigt und verbleiben in dem gegossenen Grundkörper. Da jedoch zwischen dem Grundkörper und dem eingegossenen Haltemittel keine metallische Bindung besteht, kann sich unter der Einwirkung der im Motorbetrieb periodisch veränderlichen Gas- und Massenkräfte das Haltemittel bzw. Teile desselben lockern oder lösen, was zu erheblichen Folgeschäden bis hin zu einem Ausfall der Brennkraftmaschine führen kann.As a rule, the insert parts are fastened in a self-supporting manner in the casting mold or on the casting cores by means of holding means and remain in the cast base body. However, since there is no metallic bond between the base body and the cast-in holding means, the holding means or parts thereof can loosen or loosen under the influence of the gas and inertial forces that change periodically during engine operation, which leads to considerable consequential damage and even failure of the internal combustion engine can.

Es ist zwar bekannt, Haltemittel von Einlegteilen aus dem gegossenen Grundkörper herauszuziehen und die entstandenen Löcher entweder mit Leichtmetall zu stopfen oder mit pulverförmigem Leichtmetall zu verschließen und durch Warmhohlpressen das Leichtmetall mit dem Werkstoff des Grundkörpers zu verbinden (DE-C-1 577 099, DE-B-1 627 757). Solche Maßnahmen sind allerdings mit einem beachtlichen technischen und zeitlichen Aufwand verbunden.It is known to pull holding means of insert parts out of the cast base body and to either plug the holes formed with light metal or to close them with powdered light metal and through Hot hollow presses to connect the light metal with the material of the base body (DE-C-1 577 099, DE-B-1 627 757). However, such measures are associated with considerable technical and time expenditure.

Bekannt ist auch (DE-A-2 402 337), bei der Herstellung eines Leichtmetallkolbens mit im Kolbenkopf angeordneten ringförmigen, mittels eines Salzvollkerns hergestellten Kühlkanals den Salzkern durch ein Haltemittel in die in der Kokille befindlichen Schmelze in die gewünschte Position einzutauchen und das Haltemittel aus der Restschmelze zu entfernen, sobald die Erstarrungsfront die Unterseite des Salzkerns erreicht hat. Dieses Verfahren hat sich in der Gießereipraxis jedoch nicht durchsetzen können.It is also known (DE-A-2 402 337), in the manufacture of a light metal piston with annular cooling channels arranged in the piston head and produced by means of a solid salt core, to immerse the salt core into the desired position in the melt located in the mold and to remove the holding means from the holding means remove the residual melt as soon as the solidification front has reached the bottom of the salt core. However, this process has not been successful in foundry practice.

Es ist die Aufgabe der vorliegenden Erfindung, das in dem Grundkörper des eingangs beschriebenen Verbundgußstücks eingegossene Haltemittel für das Einlegteil unlösbar in dem Grundkörper zu verankern.It is the object of the present invention to anchor the holding means cast in the base body of the composite casting described at the beginning for the insert part so that it cannot be detached from the base body.

Die Lösung dieser Aufgabe erfolgt dadurch, daß zwischen dem Grundkörper und dem Haltemittel eine stoffschlüssige metallische Bindung besteht, die beim Gießen des Verbundgußstücks durch ein Anschmelzen oder Aufschmelzen des Haltemittels erreicht wird.This object is achieved in that there is a cohesive metallic bond between the base body and the holding means, which is achieved when the composite casting is cast by melting or melting the holding means.

Bei Verbundgußstücken, bei denen der Grundkörper aus Leichtmetall besteht, besitzen Haltemittel aus geeigneten Leichtmetallegierungen mit abgestimmter Schmelztemperatur gegenüber herkömmlichen Haltemitteln aus Eisenwerkstoff deutlich höhere gewichtsspezifische Festigkeiten, die über den gesamten Einsatztemperaturbereich des Verbundgußstücks mindestens doppelt so hoch liegen. Dadurch wird die Sicherheit gegenüber charakteristischen Schadensfällen, verursacht durch die Wirkung der periodisch veränderlichen Massenkräfte, deutlich erhöht. Für den Fall auftretender Überbeanspruchungen von nicht mit dem Grundkörper metallisch verbundenen Teilen des Haltemittels, beispielsweise in unzugänglichen Bereichen des Verbundgußstücks, werden diese durch die hohe Duktilität der verwendeten Leichtmetallegierungen durch plastische Verformung konservativ aufgefangen. Ein weiterer Vorteil ist darin zu sehen, daß für das Haltemittel handelsübliches Halbzeug, wie z.B. genormte Schweißdrähte aus Leichtmetallegierungen, eingesetzt werden können, während die bisher üblichen aus Eisenwerkstoff bestehenden Haltemittel zum Zwecke einer besseren Verankerung spezielle geometrische Formen aufweisen mußten.In the case of composite castings in which the base body is made of light metal, holding means made of suitable light metal alloys with a coordinated melting temperature have significantly higher weight-specific strengths than conventional holding means made of ferrous material, over the entire operating temperature range of the composite casting are at least twice as high. This significantly increases the security against characteristic damage cases, caused by the effect of the periodically changing mass forces. In the event of overstressing of parts of the holding means that are not metallically connected to the base body, for example in inaccessible areas of the composite casting, these are conserved by plastic deformation due to the high ductility of the light metal alloys used. Another advantage can be seen in the fact that commercially available semi-finished products, such as standardized welding wires made of light metal alloys, can be used for the holding means, whereas the holding means which were customary up to now had to have special geometric shapes for better anchoring.

Zweckmäßigerweise ist die Schmelztemperatur des Werkstoffs des Haltemittels größenordnungsmäßig gleich der Schmelztemperatur des Werkstoffs des Grundkörpers, vorzugsweise beträgt die Differenz bis zu 100 K, insbesondere bis zu 75 K.The melting temperature of the material of the holding means is expediently the same as the melting temperature of the material of the base body, preferably the difference is up to 100 K, in particular up to 75 K.

Im Rahmen der weiteren Ausgestaltung der Erfindung ist bei durch statisches Gießen hergestellten Verbundgußstücken die Schmelztemperatur des Werkstoffs des Haltemittels etwas niedriger als die Schmelztemperatur des Werkstoffs des Grundkörpers.In the further embodiment of the invention, in the case of composite castings produced by static casting, the melting temperature of the material of the holding means is somewhat lower than the melting temperature of the material of the base body.

Sind die Verbundgußstücke durch dynamisches Gießen hergestellt, so ist die Schmelztemperatur des Werkstoffs des Haltemittels etwas höher als die Schmelztemperatur des Werkstoffs des Grundkörpers.If the composite castings are produced by dynamic casting, the melting temperature of the material of the holding means is somewhat higher than the melting temperature of the material of the base body.

Je nach Werkstoffwahl für das Haltemittel kann dieses nur angeschmolzen oder ganz aufgeschmolzen sein.Depending on the choice of material for the holding means, this can only be melted or completely melted.

Die Erfindung ist im folgenden anhand eines Ausführungsbeispiels näher erläutert.The invention is explained in more detail below using an exemplary embodiment.

Im Preßgießverfahren wurden Haltemittel aus der Aluminiumlegierung des Typs AlMg₃ mit unterschiedlichem Durchmesser in eutektische Aluminium-Kolbenlegierung des Typs G-AlSil2CuMgNi bei einer Gießtemperatur von 973 bis 1073°C eingegossen. In allen Fällen konnte ein Anschmelzen der Haltemittel bis auf eine Tiefe von 15 % des Durchmessers und damit eine feste stoffschlüssige metallische Bindung zwischen Gußkörper und Haltemittel erzielt werden.In the die-casting process, holding means made of aluminum alloy of the type AlMg₃ with different diameters were poured into eutectic aluminum piston alloys of the type G-AlSil2CuMgNi at a casting temperature of 973 to 1073 ° C. In all cases, the holding means could be melted down to a depth of 15% of the diameter and thus a solid material bond between the cast body and the holding means could be achieved.

Fig. 1 zeigt in einer abgebrochenen Schnittdarstellung einen mit seinem einen Abschnitt in einen Gießkern auf Sand-/Salzbasis eingebetteten Haltestift (1) aus der Aluminiumlegierung des Typs AlMg3, dessen anderer Abschnitt in einen Gußkörper (4) aus der eutektischen Aluminium-Kolbenlegierung des Typs G-AlSil2CuMgNi so eingegossen ist, daß der Haltestift (1) in der Zone (3) unter Bildung eines metallischen Verbundes aufgeschmolzen ist.Fig. 1 shows a broken-away sectional view of a holding pin (1) made of the aluminum alloy of the AlMg3 type and embedded in its one section in a sand / salt-based casting core, the other section of which is in a cast body (4) made of the eutectic aluminum-piston alloy of the type G-AlSil2CuMgNi is poured in such a way that the retaining pin (1) in the zone (3) is melted to form a metallic compound.

In Fig. 2 ist ein Schnitt entlang der Schnittlinie A-B der Fig. 1 dargestellt. Die Solidustemperatur des Haltestifts (1) liegt ca. 90 K über derjenigen des Werkstoffs des Gußkörpers (4).FIG. 2 shows a section along the section line A-B of FIG. 1. The solidus temperature of the retaining pin (1) is approx. 90 K above that of the material of the cast body (4).

Claims (7)

1. Verbundgußstück aus gegossenem Grundkörper und mittels aus metallischem Werkstoff gebildetem Haltemittel darin ein- oder angegossenem Einlegteil aus vom Werkstoff des Grundkörpers unterschiedlichem Werkstoff, insbesondere als oszillierenden Massenkräften unterworfenes Bauteil von Kolbenmaschinen, vorzugsweise Brennkraftmaschinen, dadurch gekennzeichnet, daß zwischen Grundkörper (4) und Haltemittel (1) eine stoffschlüssige metallische Bindung besteht.1. Composite casting made of a cast base body and by means of a holding means formed from a metallic material, an insert or cast-in insert made of a material different from the material of the base body, in particular as a component of piston engines, preferably internal combustion engines, which is subject to oscillating inertial forces, characterized in that between the base body (4) and the holding means (1) there is an integral metallic bond. 2. Verbundgußstück nach Anspruch 1, dadurch gekennzeichnet, daß die Schmelztemperatur des Werkstoffs des Haltemittels (1) größenordnungsmäßig gleich der Schmelztemperatur des Werkstoffs des Grundkörpers (4) ist.2. Composite casting according to claim 1, characterized in that the melting temperature of the material of the holding means (1) is of the same order of magnitude as the melting temperature of the material of the base body (4). 3. Verbundgußstück nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die Differenz zwischen der Schmelztemperatur des Werkstoffs des Haltemittels (1) und derjenigen des Werkstoffs des Grundkörpers (4) bis zu 100 K, vorzugsweise bis zu 75 K, beträgt.3. Composite casting according to claims 1 and 2, characterized in that the difference between the melting temperature of the material of the holding means (1) and that of the material of the base body (4) is up to 100 K, preferably up to 75 K. 4. Verbundgußstück nach den Ansprüchen 1 bis 3, hergestellt durch statisches Gießen, dadurch gekennzeichnet, daß die Schmelztemperatur des Werkstoffs des Haltemittels (1) etwas niedriger als die Schmelztemperatur des Werkstoffs des Grundkörpers (4) ist.4. Composite casting according to claims 1 to 3, produced by static casting, characterized in that the melting temperature of the material of the holding means (1) is somewhat lower than the melting temperature of the material of the base body (4). 5. Verbundgußstück hergestellt durch dynamisches Gießen nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die Schmelztemperatur des Werkstoffs des Haltemittels (1) etwas höher als die Schmelztemperatur des Werkstoffs des Grundkörpers (4) ist.5. Composite casting made by dynamic casting according to claims 1 to 3, characterized in that the melting temperature of the material of the holding means (1) is slightly higher than the melting temperature of the material of the base body (4). 6. Verbundgußstück nach den Ansprüchen 1 bis 5, gekennzeichnet durch ein angeschmolzenes Haltemittel (1).6. Composite casting according to claims 1 to 5, characterized by a melted holding means (1). 7. Verbundgußstück nach den Ansprüchen 1 bis 5, gekennzeichnet durch ein aufgeschmolzenes Haltemittel (1).7. Composite casting according to claims 1 to 5, characterized by a melted holding means (1).
EP89201525A 1988-06-30 1989-06-13 Composite cast piece Withdrawn EP0349031A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883822032 DE3822032A1 (en) 1988-06-30 1988-06-30 COMPOSITE CASTING PIECE
DE3822032 1988-06-30

Publications (1)

Publication Number Publication Date
EP0349031A1 true EP0349031A1 (en) 1990-01-03

Family

ID=6357586

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89201525A Withdrawn EP0349031A1 (en) 1988-06-30 1989-06-13 Composite cast piece

Country Status (2)

Country Link
EP (1) EP0349031A1 (en)
DE (1) DE3822032A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994000614A2 (en) * 1992-06-30 1994-01-06 Mahle Gmbh Reinforcing material for pistons of internal combustion engines
DE19647069A1 (en) * 1996-11-14 1998-05-20 Heidelberger Druckmasch Ag Hollow cast body e.g. printing machine cylinder preform

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1174211A (en) * 1957-04-12 1959-03-09 Improvements in or relating to the manufacture of composite metal articles
GB2019758A (en) * 1978-04-19 1979-11-07 Maschf Augsburg Nuernberg Ag Making a composite cylinder head
DE2854958A1 (en) * 1978-12-20 1980-07-10 Daimler Benz Ag Composite cast cylinder blocks for IC engine - consists of aluminium alloy block cast round liners made of wear resistant, hypereutectic aluminium silicon alloy

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1174211A (en) * 1957-04-12 1959-03-09 Improvements in or relating to the manufacture of composite metal articles
GB2019758A (en) * 1978-04-19 1979-11-07 Maschf Augsburg Nuernberg Ag Making a composite cylinder head
DE2854958A1 (en) * 1978-12-20 1980-07-10 Daimler Benz Ag Composite cast cylinder blocks for IC engine - consists of aluminium alloy block cast round liners made of wear resistant, hypereutectic aluminium silicon alloy

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994000614A2 (en) * 1992-06-30 1994-01-06 Mahle Gmbh Reinforcing material for pistons of internal combustion engines
WO1994000614A3 (en) * 1992-06-30 1994-03-03 Mahle Gmbh Reinforcing material for pistons of internal combustion engines
DE19647069A1 (en) * 1996-11-14 1998-05-20 Heidelberger Druckmasch Ag Hollow cast body e.g. printing machine cylinder preform

Also Published As

Publication number Publication date
DE3822032A1 (en) 1990-01-11

Similar Documents

Publication Publication Date Title
DE102006030699B4 (en) Cast steel piston for internal combustion engines
EP0640759B1 (en) Partially reinforced aluminium cast construction part and method of manufacturing same
DE1030659B (en) Composite solder and method for soldering with this composite solder
DE3234504A1 (en) PISTON FOR INTERNAL COMBUSTION ENGINES AND METHOD FOR THE PRODUCTION THEREOF
DE2929845C2 (en)
EP0000592A1 (en) Cooled piston for an internal-combustion engine and method for producing same
DE10153721C5 (en) Casting tool for producing a cylinder crankcase
DE3642978C1 (en) Method for the production of holes
DE19859098C1 (en) Grey cast iron cylinder liner for incorporation during casting of a light metal internal combustion engine block, is partially covered with an exterior non-fusible metal fitting to promote bonding to the cast light metal
DE901104C (en) Composite casting and process for its manufacture
DE1285680B (en) Process for the production of cast metal bodies with high thermal conductivity and wear and heat-resistant inner surfaces
DE3027352A1 (en) PISTON WITH ARMORING FOR THE PISTON RING GROOVES
DE4414095A1 (en) Method for connecting two metal workpieces to form a composite component
DE2501370B2 (en) PROCESS FOR MANUFACTURING CAST IRON MACHINE COMPONENTS WITH FRICTIONAL SURFACES HIGH WEAR RESISTANCE
DE3200641A1 (en) METHOD AND DEVICE FOR THE CASTING OF A LIGHT METAL PISTON HAVING AN ABRASION-RESISTANT INSERT
EP0349031A1 (en) Composite cast piece
DE10042207C2 (en) Pistons for an internal combustion engine and method for producing a piston
DE102007010839B4 (en) A method of manufacturing a piston and piston having an annular reinforcement comprising a plurality of reinforcing segments
DE102007060502A1 (en) Method for producing a cylinder crankcase
EP1226889A2 (en) Process for manufacturing a casting consisting of at least two different metallic materials
DE2929812C2 (en) Wheel for automobiles
DE892230C (en) Process for the continuous casting of metallic materials
DE3939261A1 (en) Elongated part e.g. connecting rod with core and cast covering - has compression resistant e.g. sintered material core with clamping pins extending into outer steel cover
DE102018127559A1 (en) Component of an internal combustion engine, in particular cylinder head, mold assembly and method for producing a component of an internal combustion engine
DE2408500B2 (en) METHOD FOR PRODUCING COMPONENTS OF CAST IRON WITH SPHERICAL GRAPHITE

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19900703