EP1218561A2 - Method for the heat treatment of structure castings from an aluminium alloy to be used therefor - Google Patents

Method for the heat treatment of structure castings from an aluminium alloy to be used therefor

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Publication number
EP1218561A2
EP1218561A2 EP00965954A EP00965954A EP1218561A2 EP 1218561 A2 EP1218561 A2 EP 1218561A2 EP 00965954 A EP00965954 A EP 00965954A EP 00965954 A EP00965954 A EP 00965954A EP 1218561 A2 EP1218561 A2 EP 1218561A2
Authority
EP
European Patent Office
Prior art keywords
minutes
quenching
heat treatment
temperature
aluminum alloy
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
Application number
EP00965954A
Other languages
German (de)
French (fr)
Other versions
EP1218561B1 (en
Inventor
Ulrich Jerichow
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.)
Honsel Werke AG
Original Assignee
Honsel Guss GmbH
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Filing date
Publication date
Priority claimed from DE10002021A external-priority patent/DE10002021C2/en
Application filed by Honsel Guss GmbH filed Critical Honsel Guss GmbH
Publication of EP1218561A2 publication Critical patent/EP1218561A2/en
Application granted granted Critical
Publication of EP1218561B1 publication Critical patent/EP1218561B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon

Definitions

  • the invention relates to a method for the heat treatment of structural castings made of an aluminum alloy and an aluminum alloy to be used for this
  • Aluminum structural castings made from an aluminum alloy are used, for example, in motor vehicle construction and are said to have good mechanical properties, in particular high elongation at break, good castability, no tendency to stick in the mold and good demoldability, high dimensional stability and good weldability, since the properties required in the known Cast aluminum alloys are not available in the as-cast state, heat treatment processes and aluminum alloys have been developed to meet industrial requirements with increasing precision and cost. Special heat treatment processes with the designations T64 and T7 have become known for this purpose. These heat treatment processes are described, for example, in 13th edition, pages 551 to 554, described In these heat treatment processes, there is a two-stage process according to the following scheme
  • the invention is therefore based on the problem of creating a heat treatment process with which good mechanical properties and high dimensional stability can be achieved inexpensively and with simple means
  • the temperature of 490 ° C can be maintained for about 60 minutes and the temperature of 250 ° C for about 30 minutes
  • the temperature if the temperature is kept at 490 ° C. for about 90 minutes, the temperature may be kept at 250 ° C. for about 30 minutes or about 45 minutes or about 75 minutes or about 105 minutes, which results in allow the mechanical properties to vary depending on the range of requirements
  • a suitable aluminum alloy for use with the method of the invention can be the composition
  • a suitable Al-Mg alloy can be the composition
  • a suitable eutectic or near-eutectic Al-Si alloy can be the composition
  • the alloys are subjected to a melt treatment such as degassing and / or filtering before being introduced into the casting process.
  • the vacuum generated in the die cavity at the time of introduction of the molten aluminum alloy is 50 to 150 mbar
  • the cast structural castings are placed on special contour-gripping product receptacles and subjected to the aforementioned heat treatment steps
  • the method T64 requires a minimum time for the heat treatment of 4 hours and a maximum time of 11 hours
  • the heat treatment method T7 also a minimum time of 4 hours and a maximum time of 8 hours
  • the method according to the invention takes a maximum of 3.25 hours, but can be the most favorable Case can be shortened to 1.5 hours.
  • the process according to the invention generally results in better economy due to the shorter cycle time.
  • the thermal stability is increased by approx. 30 ° C. compared to the heat treatment process T7 and by approx 80 ° C compared to the heat treatment process T64 improved so that the structural castings heat-treated by the process according to the invention are thermally stable up to use temperatures of 250 ° C
  • the aluminum alloys according to the invention for use with the method according to the invention make it possible to produce very thin-walled, large-area and complex structural castings, the dimensional stability and dimensional stability of which are guaranteed by the heat treatment method according to the invention and the aluminum alloys used with it, constant quality in series production, high ductility, good weldability and thus the possibility of connection with sheet metal or extruded profiles can be ensured

Abstract

A process for the heat treatment of structure castings made from an aluminum alloy, comprising the steps of: placing the structure casting onto a contour-embracing product receiving device, heating to 490° C. over the course of approximately 30 minutes, holding the temperature of 490° C. for a time of between 90 and 120 minutes, quenching in air from 490° C. to approximately 100° over the course of approximately 4 minutes, if appropriate followed by quenching in water, heating to 250° C. over the course of approximately 15 minutes, holding the temperature of 250° C. for a time of between 30 and 120 minutes, quenching in air to 40° C., if appropriate followed by quenching in water; a light metal alloy for use with this process, having the following composition: Si: 2-11.5%, Fe: 0.15-0.4%, Mg: 0.3-5.5%, Cu & It: 0.02%, Mn: 0.4-0.8%, Ti: 0.1-0.2%, remainder aluminum and trace elements, the alloys with a high silicon content having a low magnesium content and vice versa.

Description

"Verfahren zur Wärmebehandlung von Strukturgußteilen aus einer dafür zu verwendenden Aluminiumlegierung""Process for the heat treatment of structural castings from an aluminum alloy to be used for this"
Die Erfindung betrifft ein Verfahren zur Wärmebehandlung von Strukturgußteilen aus einer Aluminiumlegierung sowie eine dafür zu verwendende AluminiumlegierungThe invention relates to a method for the heat treatment of structural castings made of an aluminum alloy and an aluminum alloy to be used for this
Aluminiumstrukturgußteile aus einer Aluminiumlegierung werden beispielsweise im Kraftfahrzeugbau eingesetzt und sollen gute mechanische Eigenschaften, insbesondere eine hohe Bruchdehnung, eine gute Vergießbarkeit, keine Klebeneigung in der Form und eine gute Entformbarkeit, eine hohe Gestaltfestigkeit und eine gute Schweißbarkeit, aufweisen Da die geforderten Eigenschaften bei den bekannten Aluminiumgußlegierungen im Gußzustand nicht gegeben sind, wurden Warmebehandlungsverfahren sowie Aluminiumlegierungen entwickelt, um immer präziser und kostengünstiger den industriellen Anforderungen gerecht zu werden Bekannt geworden sind hierfür spezielle Warmebehandlungsprozesse mit der Bezeichnung T64 und T7 Diese Warmebehandlungsprozesse sind beispielsweise im "Das Techniker Handbuch" Böge, Vieweg, 13 Auflage, Seiten 551 bis 554, beschrieben Bei diesen Warmebehandlungsprozessen erfolgt ein zweistufiger Ablauf nach folgendem SchemaAluminum structural castings made from an aluminum alloy are used, for example, in motor vehicle construction and are said to have good mechanical properties, in particular high elongation at break, good castability, no tendency to stick in the mold and good demoldability, high dimensional stability and good weldability, since the properties required in the known Cast aluminum alloys are not available in the as-cast state, heat treatment processes and aluminum alloys have been developed to meet industrial requirements with increasing precision and cost. Special heat treatment processes with the designations T64 and T7 have become known for this purpose. These heat treatment processes are described, for example, in 13th edition, pages 551 to 554, described In these heat treatment processes, there is a two-stage process according to the following scheme
T64 (thermisch instabil):T64 (thermally unstable):
1 Stufe Erwarmen auf 480 bis 520 °C, Halten wahrend 2 bis 5 Stunden, Abschrecken in1 step heating to 480 to 520 ° C, holding for 2 to 5 hours, quenching in
Wasser bei 20 °C,Water at 20 ° C,
2 Stufe Erwarmen auf 155 bis 170 °C, Halten wahrend 2 bis 6 Stunden, Abschrecken in2 stage heating to 155 to 170 ° C, hold for 2 to 6 hours, quench in
Luftair
T7 (thermisch stabil bis 230 °C):T7 (thermally stable up to 230 ° C):
1 Stufe Erwarmen auf 480 bis 520 °C, Halten wahrend 2 bis 5 Stunden, Abschrecken in1 step heating to 480 to 520 ° C, holding for 2 to 5 hours, quenching in
Wasser bei 20 °C,Water at 20 ° C,
2 Stufe Erwarmen auf 200 bis 230 °C, Halten wahrend 2 bis 3 Stunden, Abschrecken in2 stage heating to 200 to 230 ° C, holding for 2 to 3 hours, quenching in
Luft Bei den gemäß dem Warmebehandlungsprozeß T64 behandelten Strukturgußteilen ist keine thermische Stabilität bei höheren Temperaturen gegeben, die allerdings bei dem Warmebehandlungsprozeß T7 vorhanden ist Nachteilig ist bei beiden Warmebehandlungsprozessen T64 und T7, daß die mittels des Druckgußverfahrens hergestellten Strukturgußteile ihre im Gußzustand vorhandene extrem hohe Maßhaltigkeit aufgrund der im Strukturgußteil wahrend des Abschreckens in Wasser auftretenden hohen thermischen Spannungszustanden verlieren Die Strukturgußteile sind nach der ersten Warmebehandlungsstufe maßlich instabil und müssen durch kostenintensive und komplizierte Richtvorgange auf Maßhaltigkeit gebracht werden Dieses Problem ist bei Strukturbauteilen besonders kritisch, da diese Strukturgußteile ein hohes Maß an Komplexität und Integrität aufweisen und dabei hohen Anforderungen an die Maßhaltigkeit genügen müssenair In the case of the structural castings treated according to the heat treatment process T64, there is no thermal stability at higher temperatures, which, however, is present in the heat treatment process T7. A disadvantage of both heat treatment processes T64 and T7 is that the structural castings produced by means of the die casting process have their extremely high dimensional accuracy due to the cast state Loss of the high thermal stress states that occur in the structural casting during quenching in water The structural castings are dimensionally unstable after the first heat treatment stage and must be brought to dimensional accuracy by cost-intensive and complicated straightening processes.This problem is particularly critical for structural components, since these structural castings have a high degree of complexity and integrity have to meet high dimensional stability requirements
Der Erfindung liegt somit das Problem zugrunde, ein Warmebehandlungsverfahren zu schaffen, mit dem sich gute mechanische Eigenschaften und eine hohe Maßhaltigkeit kostengünstig und mit einfachen Mitteln erreichen lassenThe invention is therefore based on the problem of creating a heat treatment process with which good mechanical properties and high dimensional stability can be achieved inexpensively and with simple means
Ausgehend von dieser Problemstellung wird ein Verfahren zur Wärmebehandlung von Strukturgußteilen aus einer Aluminiumlegierung vorgeschlagen, das aus den SchrittenBased on this problem, a method for the heat treatment of structural castings made of an aluminum alloy is proposed, which consists of the steps
- Auflegen des Strukturgußteils auf eine konturgreifende Produktaufnahme,- placing the structural cast part on a contour-taking product holder,
- Aufheizen auf 490 °C in etwa 30 Minuten,- heating to 490 ° C in about 30 minutes,
- Halten der Temperatur von 490 °C wahrend einer Zeit zwischen 60 und 90 Minuten,- keeping the temperature at 490 ° C for a time between 60 and 90 minutes,
- Abschrecken in Luft in etwa 4 Minuten von 490 °C auf etwa 100 °C und ggf anschließendes Abschrecken in Wasser,Quenching in air in about 4 minutes from 490 ° C to about 100 ° C and possibly subsequent quenching in water,
- Aufheizen auf 250 °C in etwa 15 Minuten,- heating to 250 ° C in about 15 minutes,
- Halten der Temperatur von 250 °C wahrend einer Zeit zwischen 30 und 120 Minuten,- maintaining the temperature of 250 ° C for a time between 30 and 120 minutes,
- Abschrecken in Luft auf 40 °C und ggf anschließendes Abschrecken in Wasser- Quenching in air to 40 ° C and possibly quenching in water
bestehtconsists
Vorzugsweise kann das Halten auf der Temperatur von 490 °C wahrend etwa 60 Minuten und das Halten auf der Temperatur von 250 °C wahrend etwa 30 Minuten erfolgenPreferably, the temperature of 490 ° C can be maintained for about 60 minutes and the temperature of 250 ° C for about 30 minutes
Wenn gemäß einer zweiten Verfahrensvariante das Halten auf der Temperatur von 490 °C wahrend etwa 90 Minuten erfolgt, kann das Halten auf der Temperatur von 250 °C wahrend etwa 30 Minuten oder etwa 45 Minuten oder etwa 75 Minuten oder etwa 105 Minuten erfolgen, wodurch sich die mechanischen Eigenschaften je nach Anforderungsspektrum variieren lassen Eine geeignete Aluminiumlegierung zur Verwendung mit dem erfindungsgemaßen Verfahren kann die ZusammensetzungAccording to a second variant of the method, if the temperature is kept at 490 ° C. for about 90 minutes, the temperature may be kept at 250 ° C. for about 30 minutes or about 45 minutes or about 75 minutes or about 105 minutes, which results in allow the mechanical properties to vary depending on the range of requirements A suitable aluminum alloy for use with the method of the invention can be the composition
Si 5-11,5%,Si 5-11.5%,
Fe 0,15-0,4%,Fe 0.15-0.4%,
Mg 0,3-1,0%,Mg 0.3-1.0%,
Cu <0,02%,Cu <0.02%,
Mn 0,4-0,8%,Mn 0.4-0.8%,
Ti 0,1-0,2%,Ti 0.1-0.2%,
Rest Aluminium und SpurenelementeRest aluminum and trace elements
aufweisenexhibit
Eine geeignete Al-Mg-Legierung kann die ZusammensetzungA suitable Al-Mg alloy can be the composition
Si 1 - 3 %,Si 1 - 3%,
Fe 0,15-0,4%,Fe 0.15-0.4%,
Mg 3 - 5,5 %,Mg 3 - 5.5%,
Cu <0,02%,Cu <0.02%,
Mn 0,4-0,8%,Mn 0.4-0.8%,
Ti 0,1 -0,2%,Ti 0.1 -0.2%,
Zn <0,08%Zn <0.08%
Rest Aluminium und SpurenelementeRest aluminum and trace elements
aufweisenexhibit
Eine geeignete eutektische oder naheutektische Al-Si-Legierung kann die ZusammensetzungA suitable eutectic or near-eutectic Al-Si alloy can be the composition
Si 7- 11,5%,Si 7- 11.5%,
Fe 0,15-0,4%,Fe 0.15-0.4%,
Mg 0,3 - 0,4 %,Mg 0.3 - 0.4%,
Cu <0,02%,Cu <0.02%,
Mn 0,4-0,6%,Mn 0.4-0.6%,
Ti 0,15-0,2%,Ti 0.15-0.2%,
Sr bis 300 ppm,Sr up to 300 ppm,
Rest Aluminium und SpurenelementeRest aluminum and trace elements
aufweisen Diese Legierungen werden vor dem Einbringen in den Gießprozeß einer Schmelzebehandlung wie Entgasen und/oder Filtrieren unterworfen Das beim Druckguß im Formhohlraum zum Zeitpunkt des Einbringens der geschmolzenen Aluminiumlegierung erzeugte Vakuum liegt bei 50 bis 150 mbarexhibit These alloys are subjected to a melt treatment such as degassing and / or filtering before being introduced into the casting process. The vacuum generated in the die cavity at the time of introduction of the molten aluminum alloy is 50 to 150 mbar
Die gegossenen Strukturgußteile werden auf spezielle konturgreifende Produktaufnahmen aufgelegt und den vorerwähnten Warmebehandlungsschritten unterzogenThe cast structural castings are placed on special contour-gripping product receptacles and subjected to the aforementioned heat treatment steps
Mit diesen Wärmebehandlungen laßt sich erreichen, daß der Verzug am Strukturgußteil erheblich niedriger ist als nach der Wärmebehandlung gemäß T64 oder T7With these heat treatments it can be achieved that the distortion on the structural casting is considerably lower than after the heat treatment according to T64 or T7
Außerdem verlängert sich die Standzeit der verwendeten konturgreifenden Produktaufnahmen aufgrund der stark reduzierten thermischen Spannungen beim Abschrecken in Luft um ein VielfachesIn addition, the service life of the contour-engaging product receptacles is extended many times over due to the greatly reduced thermal stresses when quenching in air
Des weiteren wurde festgestellt, daß durch den Fe-Gehalt von 0,15 bis 0,4 % die Werkzeugstandzeit, die bei Fe-Gehalten von < 0, 15 % in kommerziell erhaltlichen Legierungen für den Bereich Strukturgußteile unbefriedigend ist, nachhaltig verbessert wird Dabei wurden keine negativen Einflüsse auf die dynamischen und statischen Kennwerte festgestelltFurthermore, it was found that the tool life, which is unsatisfactory in the case of Fe contents of <0.15% in commercially available alloys for the area of structural castings, was sustainably improved by the Fe content of 0.15 to 0.4% no negative influences on the dynamic and static parameters were found
Mit einer Aluminiumlegierung der Zusammensetzung Si 9,5 - 11,5 % Fe 0,15 - 0,4 % Mg 0,3 - 0,4 % Cu < 0,02 % Mn 0,4 - 0,6 % Ti 0,15 - 0,2 % Rest Aluminium und SpurenelementeWith an aluminum alloy with the composition Si 9.5 - 11.5% Fe 0.15 - 0.4% Mg 0.3 - 0.4% Cu <0.02% Mn 0.4 - 0.6% Ti 0, 15 - 0.2% rest of aluminum and trace elements
wurden nach einer Wärmebehandlung folgende mechanische Eigenschaften erreicht The following mechanical properties were achieved after heat treatment
Wahrend das Verfahren T64 eine Mindestzeit für die Wärmebehandlung von 4 Stunden und eine Höchstzeit von 11 Stunden, das Warmebehandlungsverfahren T7 eine Mindestzeit von ebenfalls 4 Stunden und eine Höchstzeit von 8 Stunden erfordert, dauert das erfindungsgemaße Verfahren längstens 3,25 Stunden, kann jedoch im gunstigsten Fall bis auf 1,5 Stunden verkürzt werden Somit ergibt das erfindungsgemaße Verfahren in der Regel eine bessere Wirtschaftlichkeit aufgrund der kürzeren Taktzeit Des weiteren ist die thermische Stabilität aufgrund der in der zweiten Stufe erfolgenden Temperaturerhöhung um ca 30 °C gegenüber dem Warmebehandlungsverfahren T7 und um ca 80 °C gegenüber dem Warmebehandlungsverfahren T64 verbessert, so daß die nach dem erfindungsgemaßen Verfahren warmebehandelten Strukturgußteile bis zu Einsatztemperaturen von 250 °C thermisch stabil sindWhile the method T64 requires a minimum time for the heat treatment of 4 hours and a maximum time of 11 hours, the heat treatment method T7 also a minimum time of 4 hours and a maximum time of 8 hours, the method according to the invention takes a maximum of 3.25 hours, but can be the most favorable Case can be shortened to 1.5 hours. Thus, the process according to the invention generally results in better economy due to the shorter cycle time. Furthermore, the thermal stability is increased by approx. 30 ° C. compared to the heat treatment process T7 and by approx 80 ° C compared to the heat treatment process T64 improved so that the structural castings heat-treated by the process according to the invention are thermally stable up to use temperatures of 250 ° C
Die erfindungsgemaßen Aluminiumlegierungen zur Verwendung mit dem erfindungsgemaßen Verfahren erlauben es, sehr dünnwandige, großflächige und komplexe Strukturgußteile herzustellen, deren Formstabilitat und Maßhaltigkeit durch das erfindungsgemaße Warmebehandlungsverfahren gewahrleistet wird Dementsprechend bieten das erfindungsgemaße Verfahren und die damit verwendete Legierung dem Konstrukteur einen großen Gestaltungsspielraum Mit dem erfindungsgemaßen Verfahren und den damit verwendeten Aluminiumlegierungen lassen sich eine gleichbleibende Qualität in einer Serienfertigung, eine hohe Duktilitat, eine gute Schweißbarkeit und damit die Möglichkeit der Verbindung mit Blechen oder Strangpreßprofilen gewahrleisten The aluminum alloys according to the invention for use with the method according to the invention make it possible to produce very thin-walled, large-area and complex structural castings, the dimensional stability and dimensional stability of which are guaranteed by the heat treatment method according to the invention and the aluminum alloys used with it, constant quality in series production, high ductility, good weldability and thus the possibility of connection with sheet metal or extruded profiles can be ensured

Claims

Patentansprüche claims
Verfahren zur Wärmebehandlung von Strukturgußteilen aus einer Aluminiumlegierung mit den SchrittenMethod for the heat treatment of structural castings from an aluminum alloy, with the steps
- Auflegen des Strukturgußteils auf eine konturgreifende Produktaufnahme,- placing the structural cast part on a contour-taking product holder,
- Aufheizen auf 490 °C in etwa 30 Minuten,- heating to 490 ° C in about 30 minutes,
- Halten der Temperatur von 490 °C wahrend einer Zeit zwischen 60 und 90 Minuten,- keeping the temperature at 490 ° C for a time between 60 and 90 minutes,
- Abschrecken in Luft in etwa 4 Minuten von 490 °C auf etwa 100 °C und ggf anschließendes Abschrecken in Wasser,Quenching in air in about 4 minutes from 490 ° C to about 100 ° C and possibly subsequent quenching in water,
- Aufheizen auf 250 °C in etwa 15 Minuten,- heating to 250 ° C in about 15 minutes,
- Halten der Temperatur von 250 °C wahrend einer Zeit zwischen 30 und 105 Minuten,- maintaining the temperature of 250 ° C for a time between 30 and 105 minutes,
- Abschrecken in Luft auf 40 °C und ggf anschließendes Abschrecken in Wasser,- quenching in air to 40 ° C and possibly subsequent quenching in water,
Verfahren nach Anspruch 1, bei dem das Halten auf der Temperatur von 490 °C wahrend etwa 60 Minuten und das Halten auf der Temperatur von 250 °C wahrend etwa 30 Minuten erfolgenThe method of claim 1, wherein the holding at the temperature of 490 ° C is for about 60 minutes and the holding at the temperature of 250 ° C is for about 30 minutes
Verfahren nach Anspruch 1, bei dem das Halten auf der Temperatur von 490 °C wahrend etwa 90 Minuten und das Halten der Temperatur auf 250 °C wahrend etwa 30 Minuten oder etwa 45 Minuten oder etwa 60 Minuten oder etwa 105 Minuten erfolgenThe method of claim 1, wherein maintaining at 490 ° C for about 90 minutes and maintaining temperature at 250 ° C for about 30 minutes or about 45 minutes or about 60 minutes or about 105 minutes
Aluminiumlegierung zur Verwendung mit dem Verfahren gemäß Anspruch 1, 2 oder 3 mit der ZusammensetzungAluminum alloy for use with the method of claim 1, 2 or 3 with the composition
Si 2-11,5%,Si 2-11.5%,
Fe 0,15-0,4%,Fe 0.15-0.4%,
Mg 0,3 - 1,0 %,Mg 0.3-1.0%,
Cu <0,02%,Cu <0.02%,
Mn 0,4-0,8%,Mn 0.4-0.8%,
Ti 0,1 -0,2%,Ti 0.1 -0.2%,
Rest Aluminium und Spurenelemente Aluminiumlegierung zur Verwendung mit dem Verfahren gemäß Anspruch 1, 2 oder 3 mit der ZusammensetzungRest aluminum and trace elements Aluminum alloy for use with the method of claim 1, 2 or 3 with the composition
Si 1 - 3 %,Si 1 - 3%,
Fe 0,15-0,4%,Fe 0.15-0.4%,
Mg 3 - 5,5 %,Mg 3 - 5.5%,
Cu <0,02%,Cu <0.02%,
Mn 0,4 - 0,8 %,Mn 0.4 - 0.8%,
Ti 0,1 -0,2%,Ti 0.1 -0.2%,
Zn <0,08%,Zn <0.08%,
Rest Aluminium und SpurenelementeRest aluminum and trace elements
Aluminiumlegierung zur Verwendung mit dem Verfahren gemäß Anspruch 1, 2 oder 3 mit der ZusammensetzungAluminum alloy for use with the method of claim 1, 2 or 3 with the composition
Si 7-11,5%,Si 7-11.5%,
Fe 0,15-0,4%,Fe 0.15-0.4%,
Mg 0,3 - 0,4 %,Mg 0.3 - 0.4%,
Cu <0,02%,Cu <0.02%,
Mn 0,4-0,6%,Mn 0.4-0.6%,
Ti 0,15-0,2%,Ti 0.15-0.2%,
Sr bis 300 ppm,Sr up to 300 ppm,
Rest Aluminium und SpurenelementeRest aluminum and trace elements
Aluminiumlegierung nach Anspruch 4, 5 oder 6, die vor dem Einbringen in den Gießprozeß einer Schmelzebehandlung wie Entgasen und/oder Filtrieren unterworfen wurde Aluminum alloy according to claim 4, 5 or 6, which has been subjected to a melt treatment such as degassing and / or filtration before being introduced into the casting process
EP00965954A 1999-09-24 2000-09-09 Method for the heat treatment of structure castings from an aluminium alloy to be used therefor Expired - Lifetime EP1218561B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19945754 1999-09-24
DE19945754 1999-09-24
DE10002021A DE10002021C2 (en) 1999-09-24 2000-01-19 Process for the heat treatment of structural castings from an aluminum alloy to be used for this
DE10002021 2000-01-19
PCT/EP2000/008822 WO2001023633A2 (en) 1999-09-24 2000-09-09 Method for the heat treatment of structure castings from an aluminium alloy to be used therefor

Publications (2)

Publication Number Publication Date
EP1218561A2 true EP1218561A2 (en) 2002-07-03
EP1218561B1 EP1218561B1 (en) 2003-12-03

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US (1) US6752885B1 (en)
EP (1) EP1218561B1 (en)
JP (1) JP2003510463A (en)
AT (1) ATE255646T1 (en)
ES (1) ES2211617T3 (en)
WO (1) WO2001023633A2 (en)

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ATE255646T1 (en) 2003-12-15
EP1218561B1 (en) 2003-12-03
US6752885B1 (en) 2004-06-22
JP2003510463A (en) 2003-03-18
WO2001023633A2 (en) 2001-04-05
ES2211617T3 (en) 2004-07-16

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