EP1340827B1 - Aluminium-silicon cast alloy for piston and castpart production - Google Patents
Aluminium-silicon cast alloy for piston and castpart production Download PDFInfo
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- EP1340827B1 EP1340827B1 EP03002574A EP03002574A EP1340827B1 EP 1340827 B1 EP1340827 B1 EP 1340827B1 EP 03002574 A EP03002574 A EP 03002574A EP 03002574 A EP03002574 A EP 03002574A EP 1340827 B1 EP1340827 B1 EP 1340827B1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- the invention relates to an aluminum-silicon cast alloy with 7 - 25 wt .-% silicon and with a low magnesium content of 0.1-1.2% by weight.
- aluminum-magnesium cast alloys with at least 2.5% by weight, preferably at least 3.5% by weight of magnesium and at most 2.5% by weight of silicon are known.
- a protective thin aluminum oxide skin does not form on the surface of the metal melt, which prevents the entry of oxygen into the melt, but builds up a thick porous layer, the so-called scabies, which is a compound of two oxides, a so-called spinel, which is formed from the oxide of magnesium (MgO) and aluminum oxide (Al 2 O 3 ).
- this dross is much thicker than an aluminum oxide skin protecting the melt bath, it is porous and remains permeable to the entry and passage of oxygen to the melt. If such a bath remains for a long time, e.g. at weekends, even chunks of these dross can sink to the bottom of the furnace, so that even more oxygen can reach the surface and react with magnesium and contribute to the further formation of a spinel layer. But even in the foundry, the surface of the furnace has to be continuously freed of dross, which means that valuable aluminum melt is removed and there is a cost disadvantage.
- aluminum-silicon alloys are very low magnesium content of only 0.1-1.2% by weight.
- DE 30 41 942 A1 is an aluminum-silicon cast alloy known with 4 - 12 wt .-% silicon, 0.6 - 1.3 % By weight magnesium, balance essentially aluminum and unavoidable impurities.
- This alloy can continue as an optional component of at least one of the contain the following elements: 0.05 - 0.2 wt .-% titanium, 0.02-0.2 Wt% vanadium, 0.01-0.1 wt% lithium, 0.001-0.005 % By weight beryllium, 0.1-0.5% by weight chromium and / or 0.02 - 0.2 wt% zircon. These materials are bad in aluminum soluble and have a low diffusion coefficient, they form finely divided excretions of intermetallic phases which increase the Serve strength.
- the present invention is based on the object based on a generic aluminum-silicon casting alloy improve the flowability and the To reduce finishing wear.
- the oxide skin formed in the alloy according to the invention is not only characterized by training a protective oxygen-impermeable closure, but it is also much thinner. It was therefore found when shedding the Aluminum-silicon alloy designed according to the invention surprisingly no precipitation of thick oxide skins, which from time to time in complex Manual work had to be removed.
- the alloy is different from conventional alloys has low calcium content.
- the Ca content around 30 ppm. If the Ca content is below about 15 ppm, preferably below 10 ppm, so was found to be a less porous Oxide skin with an increased gas tightness leads.
- the invention relates to a piston for an internal combustion engine, produced from an aluminum-silicon cast alloy according to one or more of the claims, with a copper content of the melt or the piston of 1.0-5.5% by weight, preferably of 3 - 4.5 wt .-% and a silicon content of 10 - 15 wt .-%.
- the copper content in the specified range increases the mechanical strength of the piston in addition to the formation of Mg 2 Si.
- the magnesium content of the melt is between 0.5 and 1.1, in particular between 0.8 and 1.1% by weight.
- the aluminum-silicon casting alloy according to the invention is also suitable for casting castings with a very low copper content, preferably one copper-free casting.
- castings for Use as chassis parts that are higher than pistons Elasticity are required with a Magnesium content of only 0.2 - 0.6% by weight. By the casting becomes this even lower magnesium content Although less firm, it is also less brittle and therefore less brittle stretchable.
- Figure 1 shows a scanning electron micrograph an oxide skin 4 prepared in a resin coating 2 an aluminum-silicon alloy with 13% by weight silicon, 3.86% by weight copper, 0.95% by weight magnesium, 2.02% by weight Nickel, 0.23% by weight manganese, 0.56% by weight iron, 0.11% by weight Zinc and 0.055% by weight titanium and 0.007% by weight vanadium as well 61 ppm phosphorus.
- 1 shows a 20 ⁇ m thick oxide skin 4, which is mainly due to a spinel formation of magnesium oxide MgO and aluminum oxide Al 2 O 3 .
- composition of the aluminum-silicon alloy which led to the micrograph of FIG. 2 differs differs from the above casting alloy in that 0.114 % By weight of vanadium and 30 ppm of beryllium were contained.
- the thickness of the Oxide layer reduced to the range of 1 ⁇ m and the Layer settles like a wafer-thin air and oxygen impermeable film about the Melt surface.
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Description
Die Erfindung betrifft eine Aluminium-Silizium-Gusslegierung mit 7 - 25 Gew.-% Silizium und mit einem geringen Magnesium-Anteil von 0,1 - 1,2 Gew.-%.The invention relates to an aluminum-silicon cast alloy with 7 - 25 wt .-% silicon and with a low magnesium content of 0.1-1.2% by weight.
Aus EP 0 967 294 A1 sind Aluminium-Magnesium-Gusslegierungen mit wenigstens 2,5 Gew.-%, vorzugsweise wenigstens 3,5 Gew.-% Magnesium und höchstens 2,5 Gew.-% Silizium bekannt. Bei diesen Aluminium-Magnesium-Legierungen mit hohem Magnesiumgehalt, der bei allen Ausführungsbeispielen über 5 Gew.-% liegt, kommt es an der Oberfläche der Metallschmelze nicht zur Ausbildung einer schützenden dünnen Aluminiumoxidhaut, welche den Sauerstoffeintritt in die Schmelze verhindert, sondern es baut sich eine dicke poröse Schicht, die sog. Krätze, auf, bei der es sich um eine Verbindung zweier Oxide, ein sog. Spinell, handelt, welches gebildet ist aus dem Oxid des Magnesiums (MgO) und Aluminiumoxid (Al2O3). Obschon diese Krätze sehr viel dicker ist als eine das Schmelzenbad schützende Aluminiumoxidhaut, ist sie porös und bleibt für den Eintritt und Durchtritt von Sauerstoff zur Schmelze durchlässig. Wenn ein solches Bad über längere Zeit steht, bspw. an Wochenenden, so können sogar Brocken dieser Krätze auf den Boden des Ofens absinken, so dass noch mehr Sauerstoff zur Oberfläche gelangen und mit Magnesium reagieren und zur weiteren Bildung einer Spinellschicht beitragen kann. Doch auch im Gießbetrieb muss die Ofenoberfläche fortlaufend von der Krätze befreit werden, womit ein Austrag von wertvoller Aluminiumschmelze und damit ein Kostennachteil verbunden ist.From EP 0 967 294 A1, aluminum-magnesium cast alloys with at least 2.5% by weight, preferably at least 3.5% by weight of magnesium and at most 2.5% by weight of silicon are known. In the case of these aluminum-magnesium alloys with a high magnesium content, which is above 5% by weight in all of the exemplary embodiments, a protective thin aluminum oxide skin does not form on the surface of the metal melt, which prevents the entry of oxygen into the melt, but builds up a thick porous layer, the so-called scabies, which is a compound of two oxides, a so-called spinel, which is formed from the oxide of magnesium (MgO) and aluminum oxide (Al 2 O 3 ). Although this dross is much thicker than an aluminum oxide skin protecting the melt bath, it is porous and remains permeable to the entry and passage of oxygen to the melt. If such a bath remains for a long time, e.g. at weekends, even chunks of these dross can sink to the bottom of the furnace, so that even more oxygen can reach the surface and react with magnesium and contribute to the further formation of a spinel layer. But even in the foundry, the surface of the furnace has to be continuously freed of dross, which means that valuable aluminum melt is removed and there is a cost disadvantage.
Die Ausbildung der Krätze wurde bei derartigen Aluminium-Magnesium-Legierungen seit jeher durch Zusatz von Beryllium reduziert, man sprach von einer Erhöhung des Verkrätzungswiderstands. Mit EP 0 967 294 A1 wurde erkannt, dass durch Zusatz von Vanadium geringere Mengen von Beryllium zugesetzt werden mussten, also der Verkrätzungswiderstand durch geringere Beigaben an Beryllium erhöht werden konnte.The formation of the scabies was with such aluminum-magnesium alloys through the addition of beryllium reduced, one spoke of an increase in Verkrätzungswiderstands. EP 0 967 294 A1 recognized that by adding vanadium, smaller amounts of Beryllium had to be added, i.e. the Resistance to scratching due to lower additions Beryllium could be increased.
Die vorliegende Erfindung befasst sich hingegen mit Aluminium-Silizium-Legierungen mit demgegenüber sehr geringem Magnesiumgehalt von nur 0,1 - 1,2 Gew.-%.The present invention, however, is concerned with In contrast, aluminum-silicon alloys are very low magnesium content of only 0.1-1.2% by weight.
Aus DE 30 41 942 A1 ist eine Aluminium-Silizium-Gusslegierung bekannt mit 4 - 12 Gew.-% Silizium, 0,6 - 1,3 Gew.-% Magnesium, Rest im wesentlichen Aluminium und unvermeidbare Verunreinigungen. Diese Legierung kann weiterhin als wahlfreie Komponente mindestens eines der folgenden Elemente enthalten: 0,05 - 0,2 Gew.- Titan, 0,02-0,2 Gew.-% Vanadium,0,01 - 0,1 Gew.-% Lithium, 0,001-0,005 Gew.-% Beryllium, 0,1 - 0,5 Gew.-% Chrom und/oder 0,02 - 0,2 Gew.-% Zirkon. Diese Stoffe sind in Aluminium schlecht löslich und haben einen geringen Diffusionskoeffizienten, sie bilden fein verteilte Ausscheidungen von intermetallischen Phasen, welche der Steigerung der Festigkeit dienen. Zur Erhöhung der Festigkeit war es in bekannter Weise ausreichend, irgendeinen dieser Stoffe zuzugeben. Kein einziges einer Vielzahl von Ausführungsbeispielen und Vergleichslegierungen enthält Vanadium und Beryllium. Nur eine einzige Legierung (Tabelle 4, Legierung U bzw. AA) enthält 0,4 Gew.-% Vanadium. Zur Festigkeitssteigerung wird meist Titan allein verwandt.DE 30 41 942 A1 is an aluminum-silicon cast alloy known with 4 - 12 wt .-% silicon, 0.6 - 1.3 % By weight magnesium, balance essentially aluminum and unavoidable impurities. This alloy can continue as an optional component of at least one of the contain the following elements: 0.05 - 0.2 wt .-% titanium, 0.02-0.2 Wt% vanadium, 0.01-0.1 wt% lithium, 0.001-0.005 % By weight beryllium, 0.1-0.5% by weight chromium and / or 0.02 - 0.2 wt% zircon. These materials are bad in aluminum soluble and have a low diffusion coefficient, they form finely divided excretions of intermetallic phases which increase the Serve strength. To increase strength, it was in known, sufficient, any of these substances admit. Not a single one of a multitude of Contains embodiments and comparative alloys Vanadium and beryllium. Only one alloy (table 4, alloy U or AA) contains 0.4% by weight of vanadium. to Titanium alone is mostly used to increase strength.
Bei Aluminium-Silizium-Legierungen mit geringem Magnesiumgehalt von nur 0,1 - 1,2 Gew.-% war aufgrund der Affinität des Magnesiums zu Silizium von der Bildung von Mg2Si auszugehen, wodurch die Festigkeit eines aus einer solchen Legierung vergossenen Gussstücks erhöht werden kann.In the case of aluminum-silicon alloys with a low magnesium content of only 0.1-1.2% by weight, the formation of Mg 2 Si was to be assumed due to the affinity of the magnesium for silicon, which increases the strength of a casting cast from such an alloy can be.
Eine Oxidhaut auf der Schmelze wirkt sich auf die Fließfähigkeit dieser Aluminium-Silizium-Legierung aber negativ aus, da die Oxidhäute beim Vergießen zerreissen und dabei einfalten und auch ständig neu gebildet werden. Dies führt zu Einschlüssen im Gußstück, die die Festigkeit beeinträchtigen. Außerdem tritt beim Vegießen ein hoher Verschleiß der Schlichte an den Gießformen auf, was zu einer Erhöhung der Oberflächenrauhigkeit der mit Schlichte versehenen Gießformoberflächen führt und ferner dazu, dass der Schlichteauftrag bei den Gießformen häufig erneuert werden muß.An oxide skin on the melt affects the Flowability of this aluminum-silicon alloy, however negative, because the oxide skins tear during casting and fold in and be constantly reformed. This leads to inclusions in the casting, which increase the strength affect. In addition, a high occurs when vegging Wear of the size on the molds on what to an increase in the surface roughness of the size provided mold surfaces and also leads to the fact that the finishing job for the molds is often renewed must become.
Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, ausgehend von einer gattungsgemäßen Aluminium-Silizium-Gusslegierung die Fließfähigkeit zu verbessern und den Schlichteverschleiß zu reduzieren.The present invention is based on the object based on a generic aluminum-silicon casting alloy improve the flowability and the To reduce finishing wear.
Diese Aufgabe wird durch eine gattungsgemäße Aluminium-Silizium-Legierung mit den Merkmalen des Anspruchs 1 gelöst.This task is accomplished by a generic aluminum-silicon alloy with the features of claim 1 solved.
Es wurde erfindungsgemäß festgestellt, dass durch die Zugabe von 0,01 - 0,2 Gew.-% Vanadium und 0,0005 - 0,01 Gew.-% Beryllium (5 - 100 ppm) das Oxidationsverhalten der Legierung dahingehend geändert wird, dass die Öxidschicht trotz des geringen Magnesiumgehalts bei hohem Siliziumgehalt von einer fast stöchiometrisch reinen MgO-Schicht (eventuell unter Beteiligung von Berryllium) gebildet wird, die sich im Gegensatz zu Al2O3-haltigen Oxidhäuten erheblich dünner ausbildet und dadurch die Fließfähigkeit der Legierung weniger behindert. Es wird eine sehr dünne sauerstoffhaltige Haut gebildet. Die Legierung zeigt beim Vergießen ein gutes Kurzzeitoxidationsverhalten. Dies bedeutet, dass beim Vergießen zwar die Oxidhaut auch zerreißt, jedoch nicht sofort wieder neu gebildet wird, da die Spurenelemente erst wieder durch Diffusion an die Oberfläche gelangen müssen. Beim Befüllen kann daher der Meniskus in der Gießform fortschreiten, und auch dünne Wandbereiche können ohne Oxidhauteinschlüsse gegossen werden. Der Schlichteverschleiß ist ebenfalls erheblich herabgesetzt. Besondere Bedeutung hat die Erfindung im Hinblick auf die Vergießbarkeit beim Stranggießen.It was found according to the invention that the addition of 0.01-0.2% by weight of vanadium and 0.0005-0.01% by weight of beryllium (5-100 ppm) changes the oxidation behavior of the alloy so that Despite the low magnesium content and high silicon content, the oxide layer is formed by an almost stoichiometrically pure MgO layer (possibly with the involvement of berryllium), which, in contrast to oxide skins containing Al 2 O 3, is considerably thinner and thus less impedes the flowability of the alloy , A very thin, oxygen-containing skin is formed. The alloy shows good short-term oxidation behavior during casting. This means that the oxide skin tears during casting, but is not immediately formed again, since the trace elements only have to reach the surface again by diffusion. When filling, the meniscus can therefore advance in the casting mold, and even thin wall areas can be cast without oxide skin inclusions. The wear on the size is also considerably reduced. The invention is of particular importance with regard to the castability during continuous casting.
Die bei der erfindungsgemäßen Legierung gebildete Oxidhaut zeichnet sich nicht nur durch Ausbildung eines schützenden sauerstoffundurchlässigen Abschlusses aus, sondern sie ist auch sehr viel dünner. Man fand daher beim Vergießen der erfindungsgemäß ausgebildeten Aluminium-Silizium-Legierung im Anguss überraschenderweise keinen Niederschlag von dicken Oxidhäuten, die von Zeit zu Zeit in aufwendiger Handarbeit entfernt werden mussten.The oxide skin formed in the alloy according to the invention is not only characterized by training a protective oxygen-impermeable closure, but it is also much thinner. It was therefore found when shedding the Aluminum-silicon alloy designed according to the invention surprisingly no precipitation of thick oxide skins, which from time to time in complex Manual work had to be removed.
Es hat sich desweiteren als besonders vorteilhaft erwiesen, wenn die Legierung einen gegenüber üblichen Legierungen geringen Calcium-Gehalt aufweist. Üblicherweise liegt der Ca-Gehalt bei etwa 30 ppm. Wenn der Ca-Gehalt unterhalb von etwa 15 ppm, vorzugsweise unterhalb von 10 ppm liegt, so wurde festgestellt, dass dies zu einer weniger porösen Oxidhaut mit einer erhöhten Gas-Dichtigkeit führt.It has also proven to be particularly advantageous if the alloy is different from conventional alloys has low calcium content. Usually the Ca content around 30 ppm. If the Ca content is below about 15 ppm, preferably below 10 ppm, so was found to be a less porous Oxide skin with an increased gas tightness leads.
Bevorzugte Ausführungsformen der Gusslegierung ergeben sich aus den Unteransprüchen. Preferred embodiments of the cast alloy result from the subclaims.
Des Weiteren betrifft die Erfindung einen Kolben für eine Verbrennungskraftmaschine, hergestellt aus einer Aluminium-Silizium-Gusslegierung nach einem oder mehreren der Patentansprüche, mit einem Kupfergehalt der Schmelze bzw. des Kolbens von 1,0 - 5,5 Gew.-%, vorzugsweise von 3 - 4,5 Gew.-% und einem Siliziumgehalt von 10 - 15 Gew.-%. Durch den Kupfergehalt im angegebenen Bereich erhöht sich die mechanische Festigkeit des Kolbens zusätzlich zur Ausbildung von Mg2Si. Bei der Herstellung von Kolben liegt der Magnesiumgehalt der Schmelze zwischen 0,5 und 1,1, insbesondere zwischen 0,8 und 1,1 Gew.-%.Furthermore, the invention relates to a piston for an internal combustion engine, produced from an aluminum-silicon cast alloy according to one or more of the claims, with a copper content of the melt or the piston of 1.0-5.5% by weight, preferably of 3 - 4.5 wt .-% and a silicon content of 10 - 15 wt .-%. The copper content in the specified range increases the mechanical strength of the piston in addition to the formation of Mg 2 Si. In the manufacture of pistons, the magnesium content of the melt is between 0.5 and 1.1, in particular between 0.8 and 1.1% by weight.
Die erfindungsgemäße Aluminium-Silizium-Gusslegierung eignet sich aber auch zum Vergießen von Gussstücken mit einem sehr geringen Kupfergehalt, vorzugsweise eines kupferfreien Gussstücks. Insbesondere Gussstücke zur Verwendung als Fahrwerksteile, die gegenüber Kolben höhere Dehnungsfähigkeit aufweisen müssen, werden mit einem Magnesiumgehalt von nur 0,2 - 0,6 Gew.-% vergossen. Durch diesen noch geringeren Magnesiumgehalt wird das Gussstück zwar weniger fest, aber damit auch weniger spröde und somit dehnfähig.The aluminum-silicon casting alloy according to the invention but is also suitable for casting castings with a very low copper content, preferably one copper-free casting. In particular, castings for Use as chassis parts that are higher than pistons Elasticity are required with a Magnesium content of only 0.2 - 0.6% by weight. By the casting becomes this even lower magnesium content Although less firm, it is also less brittle and therefore less brittle stretchable.
Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aus den Patentansprüchen und aus der beiliegenden zeichnerischen Darstellung und nachfolgenden Beschreibung von Schliffbildern. In der Zeichnung zeigt:
- Figur 1
- eine rasterelektronenmikroskopische Aufnahme einer Oxidhaut im Schliff;
Figur 2- eine entsprechende Aufnahme unter Verwendung einer erfindungsgemäßen Gusslegierung.
- Figure 1
- a scanning electron micrograph of an oxide skin in the cut;
- Figure 2
- a corresponding recording using a cast alloy according to the invention.
Figur 1 zeigt eine rasterelektronenmikroskopische Aufnahme
einer in einer Harzumhüllung 2 präparierten Oxidhaut 4
einer Aluminium-Silizium-Legierung mit 13 Gew.-% Silizium,
3,86 Gew.-% Kupfer, 0,95 Gew.-% Magnesium, 2,02 Gew.-%
Nickel, 0,23 Gew.-% Mangan, 0,56 Gew.-% Eisen, 0,11 Gew.-%
Zink und 0,055 Gew.-% Titan und 0,007 Gew.-% Vanadium sowie
61 ppm Phosphor.Figure 1 shows a scanning electron micrograph
an
Man erkennt in Fig. 1 eine 20 µm dicke Oxidhaut 4, die
maßgeblich auf eine Spinellbildung von Magnesiumoxid MgO
und Aluminiumoxid Al2O3 zurückzuführen ist.1 shows a 20 μm
Die Zusammensetzung der Aluminium-Silizium-Legierung, welche zu dem Schliffbild nach Fig. 2 führte, unterscheidet sich von der vorstehenden Gusslegierung dadurch, dass 0,114 Gew.-% Vanadium und 30 ppm Beryllium enthalten waren. Überraschenderweise wird hierdurch die Dicke der Oxidschicht auf den Bereich von 1 µm reduziert und die Schicht legt sich wie ein hauchdünner luft- und sauerstoffundurchlässiger Film über die Schmelzenoberfläche. Beim Vergießen derartiger erfindungsgemäßer Aluminium-Silizium-Gusslegierungen wird nicht nur ein geringerer Schmelzenanteil beim Entfernen der Oxidhaut verworfen, sondern auch die Gießwerkzeuge, insbesondere Kokillengießwerkzeuge müssen erst nach sehr viel längeren Zeitperioden aufwendig gereinigt werden.The composition of the aluminum-silicon alloy, which led to the micrograph of FIG. 2 differs differs from the above casting alloy in that 0.114 % By weight of vanadium and 30 ppm of beryllium were contained. Surprisingly, the thickness of the Oxide layer reduced to the range of 1 µm and the Layer settles like a wafer-thin air and oxygen impermeable film about the Melt surface. When casting such aluminum-silicon casting alloys according to the invention not just a smaller amount of melt when removing the Discarded oxide skin, but also the casting tools, In particular, mold casting tools only need a lot of work much longer periods of time are laboriously cleaned.
Claims (11)
- An aluminium silicon cast alloy, comprising 7 - 25% by weight silicon and a low magnesium content of between 0.1 and 1.2% by weight of magnesium, as appropriate with the following alloy components:with other impurities each comprising ≤ 0.1 % by weight and totalling < 1% by weight, and with the alloy moreover containing 0.01 to 0.2% by weight of vanadium and 0.0005 to 0.01% by weight (5 - 100 ppm) of beryllium.≤ 1.2% by weight of Fe≤ 5.5% by weight of Cu≤ 1.2% by weight of Mn≤ 4% by weight of Ni≤ 2.5% by weight of Zn≤ 0.2% by weight of Pb and≤ 0.2% by weight of Ti
- An aluminium silicon cast alloy according to Claim 1, characterised in that the beryllium content is 0.0005 - 0.0035% by weight ( 5 - 35 ppm).
- An aluminium silicon cast alloy according to Claim 1 or 2, characterised in that the content of vanadium is 0.05 to 0.12% by weight, in particular 0.1 to 0.12% by weight.
- An aluminium silicon cast alloy according to Claim 1, 2 or 3, characterised in that the magnesium content is < 1% by weight.
- An aluminium silicon cast alloy according to Claim 4, characterised in that the magnesium content is 0.4 to 0.65% by weight.
- An aluminium silicon cast alloy according to one of the preceding claims, characterised in that the calcium content is at most 15 ppm, preferably at most 10 ppm.
- A piston for an internal combustion engine, made from an aluminium silicon cast alloy according to one or more of the preceding claims, and having a copper content in the melt or in the piston of 1.0 - 5.5% by weight, preferably 3 - 4.5% by weight, of copper and a silicon content of 10 - 15% by weight.
- A piston according to Claim 7, characterised in that there is a magnesium content of 0.5 - 1.1% by weight, preferably 0.8 - 1.1% by weight, in the melt or in the piston.
- A casting, in particular for use as a running gear part, made from an aluminium silicon cast alloy according to one or more of Claims 1 - 5, and having a copper content in the aluminium silicon alloy and in the casting of less than 0.5% by weight, preferably less than 0.2% by weight, and having a magnesium content of less than 0.6% by weight, in particular from 0.2 - 0.6% by weight.
- A casting according to Claim 9, characterised by a silicon content of 10 -15% by weight.
- A strand, made by continuous strand casting of an aluminium silicon cast alloy according to one of Claims 1 - 6.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10206035 | 2002-02-14 | ||
| DE10206035A DE10206035A1 (en) | 2002-02-14 | 2002-02-14 | Aluminum-based alloy used in the production of a piston for use in an internal combustion engine contains alloying additions of silicon, magnesium, vanadium and beryllium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1340827A1 EP1340827A1 (en) | 2003-09-03 |
| EP1340827B1 true EP1340827B1 (en) | 2004-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03002574A Expired - Lifetime EP1340827B1 (en) | 2002-02-14 | 2003-02-07 | Aluminium-silicon cast alloy for piston and castpart production |
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| EP (1) | EP1340827B1 (en) |
| DE (2) | DE10206035A1 (en) |
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| DE102014209102A1 (en) | 2014-05-14 | 2015-11-19 | Federal-Mogul Nürnberg GmbH | Method for producing an engine component, engine component and use of an aluminum alloy |
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| DE602004004028T2 (en) * | 2003-10-17 | 2007-07-05 | Kabushiki Kaisha Toyota Chuo Kenkyusho, Nagakute | Aluminum casting alloy, aluminum casting alloys and their manufacturing processes |
| CN102181758B (en) * | 2011-06-17 | 2013-05-15 | 重庆协成汽车零部件有限公司 | Novel casting aluminium alloy and preparation method thereof |
| DE102011083972A1 (en) * | 2011-10-04 | 2013-04-04 | Federal-Mogul Nürnberg GmbH | Method for producing an engine component and engine component |
| US10370742B2 (en) | 2013-03-14 | 2019-08-06 | Brunswick Corporation | Hypereutectic aluminum-silicon cast alloys having unique microstructure |
| US9109271B2 (en) * | 2013-03-14 | 2015-08-18 | Brunswick Corporation | Nickel containing hypereutectic aluminum-silicon sand cast alloy |
| CN110241332A (en) * | 2019-06-27 | 2019-09-17 | 广东顺博铝合金有限公司 | A kind of wear-resistant aluminum alloy and its preparation |
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| GB388109A (en) * | 1930-10-03 | 1933-02-23 | Skoda Works Plzen Ltd Company | Aluminium alloys for pistons |
| JPS5669344A (en) * | 1979-11-07 | 1981-06-10 | Showa Alum Ind Kk | Aluminum alloy for forging and its manufacture |
| GB2065516B (en) * | 1979-11-07 | 1983-08-24 | Showa Aluminium Ind | Cast bar of an alumium alloy for wrought products having mechanical properties and workability |
| JPH02225635A (en) * | 1989-02-23 | 1990-09-07 | Mitsubishi Alum Co Ltd | Manufacture of al-si alloy member having low thermal expansion coefficient, excellent wear resistance and high toughness |
| JPH07197177A (en) * | 1994-01-10 | 1995-08-01 | Sky Alum Co Ltd | Aluminum alloy rolled sheet for superplastic formation and low in cavitation |
| JPH1112674A (en) * | 1997-06-30 | 1999-01-19 | Aisin Seiki Co Ltd | Aluminum alloy for internal combustion engine piston, and piston made of aluminum alloy |
| EP0967294A1 (en) * | 1998-06-26 | 1999-12-29 | ALUMINIUM RHEINFELDEN GmbH | Treatment of an aluminium melt |
| JP2000054053A (en) * | 1998-08-03 | 2000-02-22 | Toyota Motor Corp | Aluminum-base alloy excellent in heat resistance, and its production |
-
2002
- 2002-02-14 DE DE10206035A patent/DE10206035A1/en not_active Withdrawn
-
2003
- 2003-02-07 DE DE50300161T patent/DE50300161D1/en not_active Expired - Lifetime
- 2003-02-07 EP EP03002574A patent/EP1340827B1/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014209102A1 (en) | 2014-05-14 | 2015-11-19 | Federal-Mogul Nürnberg GmbH | Method for producing an engine component, engine component and use of an aluminum alloy |
| US11280292B2 (en) | 2014-05-14 | 2022-03-22 | Federal-Mogul Nurnberg Gmbh | Method for producing an engine component, engine component, and use of an aluminum alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50300161D1 (en) | 2004-12-30 |
| EP1340827A1 (en) | 2003-09-03 |
| DE10206035A1 (en) | 2003-08-28 |
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