[go: up one dir, main page]

EP1218561B1 - 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 Download PDF

Info

Publication number
EP1218561B1
EP1218561B1 EP00965954A EP00965954A EP1218561B1 EP 1218561 B1 EP1218561 B1 EP 1218561B1 EP 00965954 A EP00965954 A EP 00965954A EP 00965954 A EP00965954 A EP 00965954A EP 1218561 B1 EP1218561 B1 EP 1218561B1
Authority
EP
European Patent Office
Prior art keywords
minutes
approximately
heat treatment
quenching
temperature
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.)
Expired - Lifetime
Application number
EP00965954A
Other languages
German (de)
French (fr)
Other versions
EP1218561A2 (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
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
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

Links

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 from a Aluminum alloy and an aluminum alloy to be used for it.
  • 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 structural strength and good weldability. Since the required properties of the known cast aluminum alloys do not exist in the as-cast state, heat treatment processes and aluminum alloys have been developed in order to meet industrial requirements more precisely and more cost-effectively. Special heat treatment processes known as T64 and T7 have become known for this. These heat treatment processes are described, for example, in "The Technician's Handbook" Böge, Vieweg, 13th edition, pages 551 to 554.
  • T64 thermalally unstable
  • 1st stage Warm to 480-520 ° C, hold for 2-5 hours, quench in water at 20 ° C
  • 2nd stage Warm to 155-170 ° C, hold for 2-6 hours, quench in air.
  • T7 thermalally stable up to 230 ° C: 1st stage Warm to 480-520 ° C, hold for 2-5 hours, quench in water at 20 ° C; 2nd stage Warm to 200 to 230 ° C, hold for 2 to 3 hours, quench in air.
  • the invention is therefore based on the problem of a heat treatment process create with which good mechanical properties and high dimensional accuracy can be achieved inexpensively and with simple means.
  • US-A-4 786 340 describes a similar heat treatment, but without the application of the structural casting on a contour-engaging product holder and only with a view to achieving the desired mechanical properties as quickly as possible of aluminum castings.
  • the temperature at 490 ° C. can preferably be maintained for about 60 minutes and keeping at the temperature of 250 ° C for about 30 minutes.
  • the temperature is kept at 490 ° C during about 90 minutes, can be kept at the temperature of 250 ° C during about 30 minutes or about 45 minutes or about 75 minutes or about 105 minutes take place, which changes the mechanical properties depending on the range of requirements vary.
  • the cast structural castings are made on special contour-taking product shots applied and subjected to the aforementioned heat treatment steps.
  • the heat treatment process T7 a minimum time of also takes 4 hours and a maximum time of 8 hours
  • the method according to the invention for a maximum of 3.25 hours, but can in the most favorable case up to 1.5 hours can be shortened.
  • the method according to the invention thus generally results better economy due to the shorter cycle time.
  • thermal stability due to the temperature increase in the second stage approx. 30 ° C compared to the T7 heat treatment process and approx. 80 ° C compared to the Heat treatment process T64 improved so that the after the invention Process of heat-treated structural castings up to operating temperatures of 250 ° C are thermally stable.
  • the aluminum alloys of the invention for use with the invention Processes allow very thin-walled, large-area and complex structural castings produce their dimensional stability and dimensional stability by the invention Heat treatment process is guaranteed. Accordingly, that offer The inventive method and the alloy used with the designer great freedom of design. With the inventive method and with it Aluminum alloys used can be of constant quality in one Series production, high ductility, good weldability and thus the possibility ensure the connection with sheets or extruded profiles.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Continuous Casting (AREA)
  • Heat Treatment Of Articles (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

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

Die Erfindung betrifft ein Verfahren zur Wärmebehandlung von Strukturgußteilen aus einer Aluminiumlegierung sowie eine dafür zu verwendende Aluminiumlegierung.The invention relates to a method for the heat treatment of structural castings from a Aluminum alloy and an aluminum alloy to be used for it.

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 Wärmebehandlungsverfahren sowie Aluminiumlegierungen entwickelt, um immer präziser und kostengünstiger den industriellen Anforderungen gerecht zu werden. Bekannt geworden sind hierfür spezielle Wärmebehandlungsprozesse mit der Bezeichnung T64 und T7. Diese Wärmebehandlungsprozesse sind beispielsweise im "Das Techniker Handbuch" Böge, Vieweg, 13. Auflage, Seiten 551 bis 554, beschrieben. Bei diesen Wärmebehandlungsprozessen erfolgt ein zweistufiger Ablauf nach folgendem Schema: T64 (thermisch instabil): 1. Stufe Erwärmen auf 480 bis 520 °C, Halten während 2 bis 5 Stunden, Abschrecken in Wasser bei 20 °C; 2. Stufe Erwärmen auf 155 bis 170 °C, Halten während 2 bis 6 Stunden, Abschrecken in Luft. T7 (thermisch stabil bis 230 °C): 1. Stufe Erwärmen auf 480 bis 520 °C, Halten während 2 bis 5 Stunden, Abschrecken in Wasser bei 20 °C; 2. Stufe Erwärmen auf 200 bis 230 °C, Halten während 2 bis 3 Stunden, Abschrecken in Luft. 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 structural strength and good weldability. Since the required properties of the known cast aluminum alloys do not exist in the as-cast state, heat treatment processes and aluminum alloys have been developed in order to meet industrial requirements more precisely and more cost-effectively. Special heat treatment processes known as T64 and T7 have become known for this. These heat treatment processes are described, for example, in "The Technician's Handbook" Böge, Vieweg, 13th edition, pages 551 to 554. These heat treatment processes are carried out in two stages according to the following scheme: T64 (thermally unstable): 1st stage Warm to 480-520 ° C, hold for 2-5 hours, quench in water at 20 ° C; 2nd stage Warm to 155-170 ° C, hold for 2-6 hours, quench in air. T7 (thermally stable up to 230 ° C): 1st stage Warm to 480-520 ° C, hold for 2-5 hours, quench in water at 20 ° C; 2nd stage Warm to 200 to 230 ° C, hold for 2 to 3 hours, quench in air.

Bei den gemäß dem Wärmebehandlungsprozeß T64 behandelten Strukturgußteilen ist keine thermische Stabilität bei höheren Temperaturen gegeben, die allerdings bei dem Wärmebehandlungsprozeß T7 vorhanden ist. Nachteilig ist bei beiden Wärmebehandlungsprozessen T64 und T7, daß die mittels des Druckgußverfahrens hergestellten Strukturgußteile ihre im Gußzustand vorhandene extrem hohe Maßhaltigkeit aufgrund der im Strukturgußteil während des Abschreckens in Wasser auftretenden hohen thermischen Spannungszuständen verlieren. Die Strukturgußteile sind nach der ersten Wärmebehandlungsstufe maßlich instabil und müssen durch kostenintensive und komplizierte Richtvorgänge 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 müssen.In the case of the structural castings treated according to the heat treatment process T64, there is none given thermal stability at higher temperatures, which, however, at the Heat treatment process T7 is present. A disadvantage of both Heat treatment processes T64 and T7 that by means of the die casting process Structural castings produced their extremely high dimensional accuracy when cast due to the high in the structural casting during quenching in water lose thermal stress states. The structural castings are after the first Heat treatment stage dimensionally unstable and have to go through costly and complicated Straightening processes are brought to dimensional accuracy. This problem is with structural components particularly critical because these structural castings have a high level of complexity and integrity have to meet high dimensional stability requirements.

Der Erfindung liegt somit das Problem zugrunde, ein Wärmebehandlungsverfahren zu schaffen, mit dem sich gute mechanische Eigenschaften und eine hohe Maßhaltigkeit kostengünstig und mit einfachen Mitteln erreichen lassen.The invention is therefore based on the problem of a heat treatment process create with which good mechanical properties and high dimensional accuracy 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 Schritten:

  • Auflegen des Strukturgußteils auf eine konturgreifende Produktaufnahme,
  • Aufheizen auf 490 °C in etwa 30 Minuten,
  • Halten der Temperatur von 490 °C während einer Zeit zwischen 60 und 90 Minuten,
  • Abschrecken in Luft in etwa 4 Minuten von 490 °C auf etwa 100 °C und ggf. anschließendes Abschrecken in Wasser,
  • Aufheizen auf 250 °C in etwa 15 Minuten,
  • Halten der Temperatur von 250 °C während einer Zeit zwischen 30 und 120 Minuten,
  • Abschrecken in Luft auf 40 °C und ggf. anschließendes Abschrecken in Wasser
besteht.Based on this problem, a method for the heat treatment of structural castings made of an aluminum alloy is proposed, which consists of the steps:
  • Placing the structural cast part on a contour-taking product holder,
  • Heating to 490 ° C in about 30 minutes,
  • Maintaining the temperature of 490 ° C for a time between 60 and 90 minutes,
  • Quenching in air in about 4 minutes from 490 ° C to about 100 ° C and possibly subsequent quenching in water,
  • Heating to 250 ° C in about 15 minutes,
  • Maintaining the temperature of 250 ° C for a time between 30 and 120 minutes,
  • Quenching in air to 40 ° C and possibly quenching in water
consists.

US-A-4 786 340 beschreibt zwar eine ähnliche Wärmebehandlung, jedoch ohne das Auflegen des Strukturgußteils auf einer konturgreifenden Produktaufnahme und nur in Hinblick auf möglichst rasches Erreichen der gewünschten mechanischen Eigenschaften von Gußstücker aus Aluminium. Erfindungsgemäß kann vorzugsweise das Halten auf der Temperatur von 490 °C während etwa 60 Minuten und das Halten auf der Temperatur von 250 °C während etwa 30 Minuten erfolgen.US-A-4 786 340 describes a similar heat treatment, but without the application of the structural casting on a contour-engaging product holder and only with a view to achieving the desired mechanical properties as quickly as possible of aluminum castings. According to the invention, the temperature at 490 ° C. can preferably be maintained for about 60 minutes and keeping at the temperature of 250 ° C for about 30 minutes.

Wenn gemäß einer zweiten Verfahrensvariante das Halten auf der Temperatur von 490 °C während etwa 90 Minuten erfolgt, kann das Halten auf der Temperatur von 250 °C während 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. If, according to a second process variant, the temperature is kept at 490 ° C during about 90 minutes, can be kept at the temperature of 250 ° C during about 30 minutes or about 45 minutes or about 75 minutes or about 105 minutes take place, which changes the mechanical properties depending on the range of requirements vary.

Eine geeignete Aluminiumlegierung zur Verwendung mit dem erfindungsgemäßen Verfahren kann die Zusammensetzung:

  • Si: 5 - 11,5 %,
  • Fe: 0,15 - 0,4 %,
  • Mg: 0,3 - 1,0 %,
  • Cu: < 0,02 %,
  • Mn: 0,4 - 0,8 %,
  • Ti: 0,1 - 0,2 %,
  • Rest: Aluminium und Spurenelemente
    • aufweisen.A suitable aluminum alloy for use with the method according to the invention can have the composition:
  • Si: 5 - 11.5%,
  • Fe: 0.15 - 0.4%,
  • Mg: 0.3-1.0%,
  • Cu: <0.02%,
  • Mn: 0.4-0.8%,
  • Ti: 0.1-0.2%,
  • Rest: aluminum and trace elements
    • exhibit.

    Eine geeignete Al-Mg-Legierung kann die Zusammensetzung:

  • Si: 1 - 3 %,
  • Fe: 0,15 - 0,4 %,
  • Mg: 3 - 5,5 %,
  • Cu: < 0,02 %,
  • Mn: 0,4 - 0,8 %,
  • Ti: 0,1 - 0,2 %,
  • Zn: < 0,08 %
  • Rest: Aluminium und Spurenelemente
    • aufweisen.A suitable Al-Mg alloy can have the following composition:
  • Si: 1 - 3%,
  • Fe: 0.15 - 0.4%,
  • Mg: 3 - 5.5%,
  • Cu: <0.02%,
  • Mn: 0.4-0.8%,
  • Ti: 0.1-0.2%,
  • Zn: <0.08%
  • Rest: aluminum and trace elements
    • exhibit.

    Eine geeignete eutektische oder naheutektische Al-Si-Legierung kann die Zusammensetzung:

  • Si: 7 - 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 %,
  • Sr: bis 300 ppm,
  • Rest: Aluminium und Spurenelemente
    • aufweisen. A suitable eutectic or near-eutectic Al-Si alloy can have the composition:
  • Si: 7 - 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%,
  • Sr: up to 300 ppm,
  • Rest: aluminum and trace elements
    • exhibit.

    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 mbar.These alloys become one before being introduced into the casting process Subjected to melt treatment such as degassing and / or filtration. Die casting in Mold cavity at the time the molten aluminum alloy is loaded The vacuum generated is 50 to 150 mbar.

    Die gegossenen Strukturgußteile werden auf spezielle konturgreifende Produktaufnahmen aufgelegt und den vorerwähnten Wärmebehandlungsschritten unterzogen.The cast structural castings are made on special contour-taking product shots applied and subjected to the aforementioned heat treatment steps.

    Mit diesen Wärmebehandlungen läßt sich erreichen, daß der Verzug am Strukturgußteil erheblich niedriger ist als nach der Wärmebehandlung gemäß T64 oder T7.With these heat treatments it can be achieved that the distortion on the structural casting is considerably lower than after 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 Vielfaches.In addition, the service life of the contour-contouring used increases Product shots due to the greatly reduced thermal stresses at Quenching in air many times over.

    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 erhältlichen Legierungen für den Bereich Strukturgußteile unbefriedigend ist, nachhaltig verbessert wird. Dabei wurden keine negativen Einflüsse auf die dynamischen und statischen Kennwerte festgestellt.Furthermore, it was found that the Fe content of 0.15 to 0.4% Tool life with Fe contents of <0.15% in commercially available Alloys for structural castings is unsatisfactory, is sustainably improved. There were no negative influences on the dynamic and static parameters detected.

    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 Spurenelemente
    • wurden nach einer Wärmebehandlung folgende mechanische Eigenschaften erreicht: Wärmebehandlung Rp0,2 in MPa A5 in % 1. Stufe 490 °C ca. 90 min 120 - 130 12 - 15 2. Stufe 250 °C ca. 105 min 1. Stufe 490 °C ca. 90 min 130 - 135 11 - 13 2. Stufe 250 °C ca. 75 min 1. Stufe 490 °C ca. 90 min 140 - 145 8 - 10 2. Stufe 250 °C ca. 45 min 1. Stufe 490 °C ca. 90 min 145 - 150 8 - 10 2. Stufe 250 °C ca. 30 min 1. Stufe 490 °C ca. 90 min 145 - 150 8 - 10 2. Stufe 250 °C ca. 30 min With an aluminum alloy of 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: aluminum and trace elements
    • the following mechanical properties were achieved after heat treatment: heat treatment Rp0.2 in MPa A5 in% 1st stage 490 ° C approx. 90 min 120-130 12-15 2nd stage 250 ° C approx. 105 min 1st stage 490 ° C approx. 90 min 130-135 11-13 2nd stage 250 ° C approx. 75 min 1st stage 490 ° C approx. 90 min 140-145 8-10 2nd stage 250 ° C approx. 45 min 1st stage 490 ° C approx. 90 min 145-150 8-10 2nd stage 250 ° C approx. 30 min 1st stage 490 ° C approx. 90 min 145-150 8-10 2nd stage 250 ° C approx. 30 min

    Während das Verfahren T64 eine Mindestzeit für die Wärmebehandlung von 4 Stunden und eine Höchstzeit von 11 Stunden, das Wärmebehandlungsverfahren T7 eine Mindestzeit von ebenfalls 4 Stunden und eine Höchstzeit von 8 Stunden erfordert, dauert das erfindungsgemäße Verfahren längstens 3,25 Stunden, kann jedoch im günstigsten Fall bis auf 1,5 Stunden verkürzt werden. Somit ergibt das erfindungsgemäße 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 Wärmebehandlungsverfahren T7 und um ca. 80 °C gegenüber dem Wärmebehandlungsverfahren T64 verbessert, so daß die nach dem erfindungsgemäßen Verfahren wärmebehandelten Strukturgußteile bis zu Einsatztemperaturen von 250 °C thermisch stabil sind.During the process T64 a minimum time for heat treatment of 4 hours and a maximum time of 11 hours, the heat treatment process T7 a minimum time of also takes 4 hours and a maximum time of 8 hours The method according to the invention for a maximum of 3.25 hours, but can in the most favorable case up to 1.5 hours can be shortened. The method according to the invention thus generally results better economy due to the shorter cycle time. Furthermore, it is thermal stability due to the temperature increase in the second stage approx. 30 ° C compared to the T7 heat treatment process and approx. 80 ° C compared to the Heat treatment process T64 improved so that the after the invention Process of heat-treated structural castings up to operating temperatures of 250 ° C are thermally stable.

    Die erfindungsgemäßen Aluminiumlegierungen zur Verwendung mit dem erfindungsgemäßen Verfahren erlauben es, sehr dünnwandige, großflächige und komplexe Strukturgußteile herzustellen, deren Formstabilität und Maßhaltigkeit durch das erfindungsgemäße Wärmebehandlungsverfahren gewährleistet wird. Dementsprechend bieten das erfindungsgemäße Verfahren und die damit verwendete Legierung dem Konstrukteur einen großen Gestaltungsspielraum. Mit dem erfindungsgemäßen Verfahren und den damit verwendeten Aluminiumlegierungen lassen sich eine gleichbleibende Qualität in einer Serienfertigung, eine hohe Duktilität, eine gute Schweißbarkeit und damit die Möglichkeit der Verbindung mit Blechen oder Strangpreßprofilen gewährleisten.The aluminum alloys of the invention for use with the invention Processes allow very thin-walled, large-area and complex structural castings produce their dimensional stability and dimensional stability by the invention Heat treatment process is guaranteed. Accordingly, that offer The inventive method and the alloy used with the designer great freedom of design. With the inventive method and with it Aluminum alloys used can be of constant quality in one Series production, high ductility, good weldability and thus the possibility ensure the connection with sheets or extruded profiles.

    Claims (7)

    1. A method for the heat treatment of structure castings made of an aluminium alloy, comprising the steps:
      laying the structure casting on a contour-gripping product holder,
      heating to 490°C in approximately 30 minutes,
      holding the temperature of 490°C for a time of between 60 and 90 minutes,
      quenching in air in approximately 4 minutes from 490°C to approximately 100°C and possibly subsequent quenching in water,
      heating to 250°C in approximately 15 minutes,
      holding the temperature of 250°C for a time of between 30 and 105 minutes,
      quenching in air to 40°C and possibly subsequent quenching in water.
    2. A method according to Claim 1, in which the holding at the temperature of 490°C takes place for approximately 60 minutes and the holding at the temperature of 250°C for approximately 30 minutes.
    3. A method according to Claim 1, in which the holding at the temperature of 490°C takes place for approximately 90 minutes and the holding at the temperature of 250°C for approximately 30 minutes or approximately 45 minutes or approximately 60 minutes or approximately 105 minutes.
    4. A method according to one of Claims 1 to 3, using an aluminium alloy of the composition:
      Si: 2 - 11.5%,
      Fe: 0.15 - 0.4%,
      Mg: 0.3 - 1.0%,
      Cu: < 0.02%,
      Mn: 0.4 - 0.8%,
      Ti: 0.1 - 0.2%,
      remainder aluminium and trace elements.
    5. A method according to one of Claims 1 to 3, using an aluminium alloy of the composition:
      Si: 1 - 3%,
      Fe: 0.15 - 0.4%,
      Mg: 3 - 5.5%,
      Cu: < 0.02%,
      Mn: 0.4 - 0.8%,
      Ti: 0.1 - 0.2%,
      Zn: < 0.08%,
      remainder aluminium and trace elements.
    6. A method according to one of Claims 1 to 3, using an aluminium alloy of the composition:
      Si: 7 - 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%,
      Sr: up to 300 ppm,
      remainder aluminium and trace elements.
    7. A method according to one of Claims 4 - 6, in which the aluminium alloy before introduction into the casting process is subjected to a melt treatment such as degassing and/or filtration.
    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
    DE10002021 2000-01-19
    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
    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 EP1218561A2 (en) 2002-07-03
    EP1218561B1 true EP1218561B1 (en) 2003-12-03

    Family

    ID=26003916

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00965954A Expired - Lifetime EP1218561B1 (en) 1999-09-24 2000-09-09 Method for the heat treatment of structure castings from an aluminium alloy to be used therefor

    Country Status (6)

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

    Families Citing this family (14)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE10037307B4 (en) * 2000-07-28 2004-02-05 Honsel Gmbh & Co Kg Structural element for an aircraft, in particular an aircraft door
    DE10330400A1 (en) * 2003-07-04 2005-01-20 Alutec-Belte Ag Process for quenching cast part made from light metal alloy comprises using gaseous quenching medium
    ITMI20061659A1 (en) * 2005-08-31 2007-03-01 Ksm Castings Gmbh ALUMINUM JET ALLOYS, IN PARTICULAR FOR FRAMES APPLICATIONS
    JP2007239001A (en) * 2006-03-07 2007-09-20 Nissan Motor Co Ltd Aluminum die-cast product manufacturing method and manufacturing apparatus
    CN101415855B (en) * 2006-04-13 2011-12-28 空中客车德国有限公司 Method and apparatus for thermally processing sectional materials, and sectional materials
    JP4994734B2 (en) * 2006-07-24 2012-08-08 株式会社大紀アルミニウム工業所 Aluminum alloy for casting and cast aluminum alloy
    FR2917751B1 (en) * 2007-06-22 2011-04-01 Montupet Sa PROCESS FOR THE HEAT TREATMENT OF ALUMINUM-BASED ALLOY CUPS AND CULONS WITH IMPROVED FATIGUE RESISTANCE PROPERTIES
    DE112008002069A5 (en) * 2007-11-08 2010-04-29 Ksm Castings Gmbh Front axle for motor vehicles
    DE102008029864B4 (en) * 2008-06-24 2011-02-24 Bdw Technologies Gmbh Cast component and method for its manufacture
    DE102009019269A1 (en) * 2009-04-28 2010-11-11 Audi Ag Aluminum-silicon die casting alloy for thin-walled structural components
    US9038704B2 (en) 2011-04-04 2015-05-26 Emerson Climate Technologies, Inc. Aluminum alloy compositions and methods for die-casting thereof
    MX2017003474A (en) 2014-09-18 2017-05-12 Cons Eng Company Inc System and method for quenching castings.
    US10308993B2 (en) 2015-06-12 2019-06-04 Consolidated Engineering Company, Inc. System and method for improving quench air flow
    CN108472719A (en) * 2015-11-05 2018-08-31 联合工程公司 Method for improving heat treating castings

    Family Cites Families (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE1027409B (en) 1953-04-10 1958-04-03 Ver Deutsche Metallwerke Ag Use of aluminum alloys with zinc, magnesium and copper
    JPH0737660B2 (en) 1985-02-21 1995-04-26 トヨタ自動車株式会社 Improved treatment method of cylinder head for internal combustion engine made of cast aluminum alloy
    JPS6274043A (en) * 1985-09-27 1987-04-04 Ube Ind Ltd High strength aluminum alloy for pressure casting
    US5178695A (en) 1990-05-02 1993-01-12 Allied-Signal Inc. Strength enhancement of rapidly solidified aluminum-lithium through double aging
    CH689143A5 (en) 1994-06-16 1998-10-30 Rheinfelden Aluminium Gmbh Aluminum-silicon casting alloys with high corrosion resistance, particularly for safety components.
    JP3764200B2 (en) 1996-03-19 2006-04-05 株式会社デンソー Manufacturing method of high-strength die-cast products

    Also Published As

    Publication number Publication date
    EP1218561A2 (en) 2002-07-03
    WO2001023633A2 (en) 2001-04-05
    ES2211617T3 (en) 2004-07-16
    US6752885B1 (en) 2004-06-22
    ATE255646T1 (en) 2003-12-15
    JP2003510463A (en) 2003-03-18
    WO2001023633A3 (en) 2001-11-01

    Similar Documents

    Publication Publication Date Title
    EP1218561B1 (en) Method for the heat treatment of structure castings from an aluminium alloy to be used therefor
    DE102013012259B3 (en) Aluminum material with improved precipitation hardening, process for its production and use of the aluminum material
    EP0918095B1 (en) Process of manufacturing a structural element made of a die-cast aluminium alloy
    EP3176275B1 (en) Aluminium-silicon die casting alloy method for producing a die casting component made of the alloy, and a body component with a die casting component
    DE102011105447B4 (en) Process for the production of aluminum die-cast parts
    DE10352932A1 (en) Cast aluminum alloy
    EP0997550B1 (en) Method for fabricating a component from an aluminium alloy by pressure die-casting
    EP3825428A1 (en) Die cast component and method for producing a die cast component
    DE69614788T2 (en) Aluminum-copper-magnesium alloy with high creep resistance
    DE1558804A1 (en) Method of treating a metastable beta titanium alloy
    DE10002021C2 (en) Process for the heat treatment of structural castings from an aluminum alloy to be used for this
    DE2500084C3 (en) Process for the production of aluminum semi-finished products
    EP2061912B1 (en) ALUMINIUM ALLOY OF THE AlZnMg TYPE AND METHOD OF PRODUCING IT
    DE1483228B2 (en) ALUMINUM ALLOY WITH HIGH PERFORMANCE
    DE102012017711B4 (en) Method for heat treating a component
    DE102004013777B4 (en) Method for producing a cast part from an AL / Si casting alloy
    DE3740732C2 (en)
    DE1533298A1 (en) Martensite-hardenable nickel-molybdenum steel alloy
    DE1758820C3 (en) Use of an AlZnCuMg alloy
    EP1442150B1 (en) Aluminum-silicon alloys having improved mechanical properties
    DE102012008245B4 (en) Process for curing a component
    EP2088216A1 (en) Aluminium alloy
    EP1195449A2 (en) Precipitation hardening of an aluminium alloy
    DE102019202676B4 (en) Cast components with high strength and ductility and low tendency to hot crack
    DE19832489A1 (en) Wrought aluminium-magnesium-silicon alloy

    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

    17P Request for examination filed

    Effective date: 20020416

    AK Designated contracting states

    Kind code of ref document: A2

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

    AX Request for extension of the european patent

    Free format text: AL;LT;LV;MK;RO;SI

    RIN1 Information on inventor provided before grant (corrected)

    Inventor name: JERICHOW, ULRICH

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    GRAA (expected) grant

    Free format text: ORIGINAL CODE: 0009210

    AK Designated contracting states

    Kind code of ref document: B1

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: NL

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031203

    Ref country code: CY

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031203

    Ref country code: IE

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031203

    Ref country code: FI

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031203

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: FG4D

    Free format text: NOT ENGLISH

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: EP

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: FG4D

    Free format text: GERMAN

    REF Corresponds to:

    Ref document number: 50004670

    Country of ref document: DE

    Date of ref document: 20040115

    Kind code of ref document: P

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: SE

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20040303

    Ref country code: GR

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20040303

    Ref country code: DK

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20040303

    GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

    Effective date: 20040312

    NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
    LTIE Lt: invalidation of european patent or patent extension

    Effective date: 20031203

    RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

    Owner name: HONSEL GMBH & CO. KG

    REG Reference to a national code

    Ref country code: ES

    Ref legal event code: FG2A

    Ref document number: 2211617

    Country of ref document: ES

    Kind code of ref document: T3

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: FD4D

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: AT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040909

    Ref country code: LU

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040909

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: LI

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040930

    Ref country code: BE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040930

    Ref country code: CH

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040930

    Ref country code: MC

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040930

    ET Fr: translation filed
    PLBE No opposition filed within time limit

    Free format text: ORIGINAL CODE: 0009261

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

    Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

    26N No opposition filed

    Effective date: 20040906

    BERE Be: lapsed

    Owner name: *HONSEL GUSS G.M.B.H.

    Effective date: 20040930

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PL

    BERE Be: lapsed

    Owner name: *HONSEL GUSS G.M.B.H.

    Effective date: 20040930

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: PT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040503

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: IT

    Payment date: 20100924

    Year of fee payment: 11

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: GB

    Payment date: 20110923

    Year of fee payment: 12

    Ref country code: ES

    Payment date: 20110923

    Year of fee payment: 12

    Ref country code: FR

    Payment date: 20111005

    Year of fee payment: 12

    Ref country code: DE

    Payment date: 20110927

    Year of fee payment: 12

    GBPC Gb: european patent ceased through non-payment of renewal fee

    Effective date: 20120909

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: ST

    Effective date: 20130531

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: DE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20130403

    Ref country code: GB

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20120909

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: FR

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20121001

    Ref country code: IT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20120909

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R119

    Ref document number: 50004670

    Country of ref document: DE

    Effective date: 20130403

    REG Reference to a national code

    Ref country code: ES

    Ref legal event code: FD2A

    Effective date: 20131018

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: ES

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20120910