EP1530651B1 - Verfahren und vorrichtung zur vereinfachten herstellung von wärmebehandelbaren aluminiumlegierungsgussteilen mit künstlicher selbstalterung - Google Patents

Verfahren und vorrichtung zur vereinfachten herstellung von wärmebehandelbaren aluminiumlegierungsgussteilen mit künstlicher selbstalterung Download PDF

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EP1530651B1
EP1530651B1 EP00987590A EP00987590A EP1530651B1 EP 1530651 B1 EP1530651 B1 EP 1530651B1 EP 00987590 A EP00987590 A EP 00987590A EP 00987590 A EP00987590 A EP 00987590A EP 1530651 B1 EP1530651 B1 EP 1530651B1
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casting
workpiece
aging
quench
workpiece portion
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French (fr)
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EP1530651A2 (de
EP1530651A4 (de
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Oscar Adolfo Lopez Mateos 402 GARZA-ONDARZA
Salvador Valtierra-Gallardo
Juan Francisco Mojica-Briseno
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Nemak SAB de CV
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Tenedora Nemak SA de CV
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Priority claimed from PCT/IB2000/001993 external-priority patent/WO2002048419A2/en
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  • the present invention relates to a method and apparatus for making aluminum alloy castings, wherein the heat-treatment processes of the prior art are simplified, by actually eliminating some traditional steps and equipment.
  • the invention is applicable for example in the production of cylinder heads, motor blocks and the like, for automotive engines.
  • the invention provides many advantages over the prior art heat-treatments, with an increased productivity of the casting plants, and lower capital and operation costs as well.
  • the invention is particularly useful for producing aluminum alloys of the 3xx. x series of the classification of the Aluminum Association (AA), especially for T6 and T7 properties.
  • AA Aluminum Association
  • This invention is broadly applicable to the production of any aluminum alloy casting which in the past has derived meaningful benefit from quenching and artificial aging in an aging furnace.
  • the invention eliminates the need for an aging furnace, while retaining the benefits thereof.
  • This improvement has been styled herein as artificial self-aging (to distinguish from natural aging at ambient temperatures and from prior art artificial aging, which requires an aging furnace).
  • This invention is broadly-applicable to the production of any aluminium alloy casting of the type having significant precipitation hardening with meaningful benefit from "solution” heat treating and aging.
  • the production process currently followed in the industry comprises filling a mold with liquid aluminum alloy, cooling the cast part in the mold in order to obtain a solidified casting, extracting the casting from the mold, and allowing the cast part to cool-down naturally to ambient temperatures, and then subjecting batches of such cooled castings to the aforementioned "solution" heat-treating process.
  • the heat treating of the prior art comprises heating the preferably trimmed castings in a furnace to temperatures above about 470°C (typically in the range between 480°C and 495°C) for a certain period of time, usually in the range between at least 2 to 7 hours. This treatment is performed in order to bring back into solid solution the copper and/or other alloying elements that give the castings their hardness. It is known that, while the casting metal is in the molten state, the alloying elements are in solution in the aluminum substrate.
  • the casting is re-heated in a "solution" heat treatment furnace for several hours, and only then is quenched, i.e. rapidly cooled down by a fluid quench from a temperature for example about 480°C to around 85°C, so that the solid solution is preserved (before segregation can occur).
  • a fluid quench from a temperature for example about 480°C to around 85°C, so that the solid solution is preserved (before segregation can occur).
  • Such post solution-treatment quench cooling may commonly be continued in a manner sufficient to bring the castings down to any of a number of different temperatures and at different rates according to the final properties of the alloy to be emphasized.
  • This quenching step produces a supersaturated solid solution that causes the alloy to harden naturally as time passes.
  • the quenched castings are maintained at temperatures of about 200°C in an "aging" furnace for about 2 or more hours. The time spent in the "aging" furnace at elevated artificial aging temperatures brings the alloy to at least a partial coherency in its structure giving the required hardness and strength properties.
  • U.S. patent No. 5,788,784 to Koppenhoefer et al discloses a process for heat-treating light metal castings that requires "a solution heat treatment furnace 2, an adjoining quenching device 3, as well as an aging furnace 4", all particularly for cylinder heads of piston engines.
  • a solution heat treatment furnace 2 an adjoining quenching device 3
  • an aging furnace 4" an aging furnace 4"
  • said castings unconventionally are not naturally cooled, yet are still solution heat treated (claiming the advantage of using the residual heat of the casting present at the approximate 530°C temperature of such treatment).
  • the castings are quenched with an air/water mixture down to 130°C to 160°C, and then aged in a furnace at approximately 170°C to 210°C (thus taking advantage of some relatively minor residual heat carryover into the aging furnace), and are then finally cooled to room temperature after, for example, four hours of furnace aging.
  • the castings are individually quenched with a mist-type fine mixture of air and water, which is "nozzle sprayed on all sides" of the casting.
  • Koppenhoefer asserts a number of advantages by reason of quenching the castings with an air-water spray, for example that a uniform and low-distortion cooling is achieved, that the adhering core sand is not wetted at the elevated quenching temperatures and can be collected clean and reused after regeneration, and that the residual heat of the casting remaining at 130° to 160°C can be used to aid in the subsequent furnace aging step (by not cooling down the casting too much and leaving some heat in said casting). Quenching the casting by directing the sprayed water on all sides of the casting suggests that most of the residual heat is lost, with that amount retained being mainly in the inner portion of the casting.
  • U.S. patent No. 5,112,412 to Plata et al teaches a process for cooling large cast billets of aluminum after a temperature homogenization (re-heat) annealing step.
  • Annealing is a softening process for aluminum (just the opposite of the strengthening and hardening heat treatment of the present invention), and this Plata patent is silent on how the cooling is to be done to accomplish a particular result (mainly mentioning only that it be "in accordance with the alloy composition" and describing how the "automated and controlled manner of spraying can be adjusted to different shaped billets, as they may differ from the usual round shape”).
  • This patent first describes cooling the annealed billet with a spray on all sides.
  • Plata et al describes a process modification in the case of a so-called (but otherwise unidentified) "hard” alloy to continue spraying until the billet has achieved an equalized temperature.
  • An example of this temperature is given as "310 C.-350 C. in AlMgSi alloys" (a range above most age hardening but typical of softening annealing).
  • the teaching includes the possibility of varying the intensity of the continuous spray, but only for the purpose of achieving a "better balanced heat flow” and a temperature zone "preferably distributed homogeneously during cooling so that no or only minimal deformations, stresses or cracks form".
  • the patent states that circular billets are sprayed evenly, but a rectangular billet may be sprayed with different intensity along it periphery. This difference in spray intensity is to achieve uniformity of cooling during the quench (just the opposite of subjecting the casting to a significant differential or complete absence of quench cooling of a specific waste portion of the casting in order to maintain such portion at a significantly higher temperature during the quench of the work portion (and much less to identify such a waste portion which is accessible to the spray, but is not to be so spray cooled).
  • one of the embodiments discloses a spray process involving a difference in the temperature between certain portions of the billet which later reach an equalized temperature
  • differential quenching of selected portions of the casting to promote rather than minimize an initial significant heat differential between selected different portions of the casting (particularly with the division being between equally exposed waste and workpiece portions).
  • Plata et al. teaches a process of cooling the surfaces of the workpiece (billet) on all sides, while the inner portion of the workpiece remains hot.
  • the unquenched portion is an existing waste portion that is put to a useful interim purpose but whose ultimate alloy and physical properties are irrelevant Engine castings, if made by the Plata process would be rejected.
  • a method of quenching and artificially aging an aluminum alloy casting having a riser portion and a workpiece portion comprising: selectively quench cooling the workpiece portion of the casting while maintaining the riser portion at a relatively higher temperature; initiating the quench when the casting is at elevated temperatures with its alloying elements in solid solution; proceeding with the quench to cool the workpiece portion sufficiently rapidly to inhibit precipitation of the alloy elements and thereby to maintain such elements in supersaturated solution within the aluminum matrix, discontinuing the quench when the workpiece portion is cooled to a temperature which is at or below the range for artificial aging; artificially aging said workpiece portion within a range of temperatures and over an effective time period appropriate for such aging of the aluminium alloy casting workpiece primarily by means of residual heat flowing from the relatively hotter riser portion.
  • Embodiments of the present invention can improve one or more of the present inventors' aforementioned 5,922,147 patent by simplifying even further the overall heat-treatment of the castings, although broadly it can be applied separately.
  • These embodiments of the invention can dispense with the aging furnace, in addition to preferably also dispensing with the solution furnace. Therefore, the invention is able to provide a method and apparatus for producing the casting in a considerably shorter time, with less capital, and lower production costs, while maintaining and even improving on required mechanical properties of the castings.
  • Preferred embodiments of the present invention use a selectively directed spray quench in a manner which can eliminate expensive equipment and reduce significantly the overall production time.
  • the castings are preferably so quenched promptly after demolding in accordance with one or more of the present inventors' own recent patent ( US Patent No. 5,922,147 ) to obtain the properties of a conventional "solution” heat treatment (such as the properties required by a T6 temper) but without the usual "solution” heat treatment in a furnace.
  • Koppenhoefer (US Patent No. 5,788,784 ) discussed above, does not teach or suggest the present inventors' invention of selectively quenching only the end product portion of the casting in order to use eventually the unquenched retained residual heat from the sprue and from any other temporarily retained waste portion of the casting (including sand cores) in order to enable aging of said casting without need for an aging furnace.
  • the Koppenhoefer teaches decoring the resin bonded sand cores from the castings by being "pyrolytically destroyed" during solution heat treatment and further removed during quenching, all prior to aging.
  • the present inventors specifically identify the two major parts of the casting as a riser portion (the riser portion being that portion which is subsequently removed and discarded) and a workpiece portion (the workpiece portion being the portion used for the end product).
  • a “riser” is a reservoir of liquid metal used to largely compensate for shrinkage of a casting as it cools in its mold.
  • the term “riser” also commonly has the meaning used in this application, namely the solidified metal portion of the casting remaining in the reservoir after the casting is cooled.
  • “Riser portion” is intended to include at least the riser and additionally in its broader sense can include other similar waste attachments such as sprue, runners, gates, etc. formed as part of the original casting.
  • the workpiece When the casting is demolded from the typical water-cooled mold, the workpiece commonly has a temperature of about 400°C and the riser one of about 500°C.
  • the invention achieves its advantages by a selective quench of only the workpiece portion to surface temperatures preferably in the range from above about 100°C to about 130°C, at a rate sufficient to achieve a supersaturated solution of the hardening element (typically copper) in the aluminum alloy of the workpiece at the atomic level.
  • spray nozzles are set to direct the water spray or mist on the workpiece and minimize any impingement on the riser.
  • This workpiece-directed quench permits the riser (subjected only to natural or at most a minimized indirect cooling) to maintain a significantly higher temperature typically above about at least 300°C to 350°C during the workpiece quenching step. Thereafter, when the quenching is finished, the residual heat in the sprue portion is used as a heat reservoir to slightly re-heat the workpiece and maintain it (by conductive phenomena) in the artificial aging temperature range of between 140°C and 250°C, and preferably about 180°C to about 220°C, for an adequate time period, to thus achieve the desired properties for the workpiece.
  • the invention dispenses with the need to supply furnace heat for re-heating and maintaining the whole casting in the artificial aging temperature range and simplifies the casting plant by thus rendering the aging furnace unnecessary.
  • the final quench temperature should not be so low that the residual heat from the riser is too little to maintain the workpiece in the required aging temperature range for the necessary length of time.
  • the workpiece surface temperature is maintained high enough above the boiling point of the spray liquid (typically water) throughout the quench, then liquid overflow onto the riser can be more easily minimized or avoided altogether and the latent heat of can be utilized and concentrated on the workpiece.
  • a copious flow of a fine water mist is especially effective, since the mist particles evaporate immediately and there is no liquid wetting of the hot workpiece surface that can flow over onto the riser .
  • the quenching temperature can be regulated to achieve the advantages of the invention at different temperature paths.
  • the aging position of the casting plant can be insulated to prolong the artificial aging step at elevated temperatures for a more extended time period as may be needed (or even make use of a heat exchanger to take advantage of other residual or excess heat sources that may be available elsewhere in the casting plant system), all as an aid to avoid the need for the added expense of an aging furnace.
  • the invention is herein described as applied to the production of cylinder heads for automotive motors using generally silicon-based aluminum alloys of the AA 3xx.x series, having T6 and T7 properties (such as particularly A319), but it will be evident to those skilled in the art, that the invention can in its broader aspects be also applied to other metal alloys and to the heat-treating of other castings.
  • Figure 1 is a graph showing the different temperature paths vs. time of various castings; with the prior art processes in dotted lines and embodiments of the present invention in continuous lines.
  • the most common practice of the prior art includes, after demolding, the steps of subjecting the casting to: natural cooling, reheating and maintaining in a solution heat furnace, quenching, and reheating and maintaining in an aging furnace.
  • Another illustrated prior art temperature path is the heat treatment disclosed in one or more of the present inventors' very recent U.S. Patent 5,922,147 (wherein the solution treatment is omitted entirely, with the quenching of the casting occurring without natural cooling after demolding, and preferably immediately).
  • the casting temperature paths of the workpiece portion and of the riser portion according to the method of the present invention are shown in respective continuous lines.
  • the riser remains essentially unquenched, with any cooling typically occurring only naturally and at a much lower rate; so that when the quenched workpiece has a temperature of about 120°C, the riser still has a temperature about 350°C.
  • the quenching step is stopped and the casting (riser and workpiece together) is allowed to homogenize its temperature with the workpiece being mainly in the range of from about 160°C to about 220°C (initially towards the high end of the range, preferably).
  • This essentially duplicates the conventional temperature profile of a casting maintained in an aging furnace after the quenching step, while surprisingly eliminating the need for any aging furnace. This is possible, because there is sufficient mass in the riser to function as an adequate reservoir of heat available for a sufficient duration to achieve complete aging.
  • FIG. 2 schematically shows a preferred embodiment of the apparatus used for the quenching step in accordance with the invention.
  • the casting broadly comprising riser 24 and the workpiece 22 is placed on a conveyor 16 by means of a feeding robot 12.
  • the conveyor 16 has structural supports 18 (such as rollers)located through the quenching unit 10.
  • an air header 26 and a water header 28 are also provided in the quenching unit 10 and an air header 26 and a water header 28, both being connected to spray nozzles 30.
  • Spray nozzle 30 projects a water spray or an air driven mist 32 that is directed to impinge mainly on the workpiece portion 22 of the casting 29 positioned on the conveyor 16.
  • the conveyor 16 is operated discontinuously in order to transport castings 20 from one quenching station 33 to the next in a step-wise mode (over a distance 34).
  • the residence time needed for quenching the workpieces 22 to the desired temperatures is completed.
  • a withdrawing robot 14 transports the quenched castings to a place to be aged artificially at still elevated temperatures over an extended time utilizing the reservoir of heat remaining in the riser 24.
  • a fan 13 can be supplied to extract the vapor produced by the evaporation of the sprayed water while quenching the workpieces 22 of castings 20.
  • Figure 3 shows an end view of the quenching unit 10. The same elements bear the same reference numerals of Figure 2 . Additionally shown is an air supply 25 for air header 26, preferably at high pressure in order to achieve a better water spray or mist. Liquid supply 27 feeds header 28, which can handle water or any other suitable liquid cooling medium.
  • the invention in its broader aspects can be applicable to other aluminum alloys and heat treating processes wherein the aging furnace step is normally used, including those prior art systems still using a conventional solution heat treatment with a subsequent quenching step.

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Claims (30)

  1. Ein Verfahren zum Abschrecken und Warmauslagern eines Aluminiumlegierungsgusses (20), der einen erhöhten Abschnitt (24) und einen Werkstückabschnitt (22) aufweist, wobei das Verfahren umfasst:
    selektives Abschrecken des Werkstückabschnitts (22) des Gusses unter Beibehaltung einer relativ höheren Temperatur des erhöhten Abschnitts (24);
    Einleiten des Abschreckens, wenn der Guss (20) eine erhöhte Temperatur hat, mit seinen Legierungselementen als Mischkristalle vorliegend;
    Fortsetzen des Abschreckens, um den Werkstückabschnitt (22) ausreichend schnell zur Unterdrückung der Ausscheidung von Legierungselementen abzukühlen und dadurch diese Elemente in übersättigter Lösung in der Aluminiummatrix zu halten;
    Abbrechen des Abschreckens wenn der Werkstückabschnitt (22) auf eine Temperatur heruntergekühlt ist, die im oder unter dem Bereich zum Warmauslagern liegt;
    Warmauslagern des Werkstücks (22) in einem Bereich von Temperaturen und über eine effektive Zeitspanne, so bemessen, dass das Warmauslagern des Aluminiumlegierungsgusswerkstücks vorwiegend durch Abfließen von Restwärme des relativ heißeren erhöhten Abschnitts (24) stattfindet.
  2. Verfahren nach Anspruch 1, wobei das Warmauslagern des Werkstückabschnitts ohne aktives Erhitzen des gesamten Gusses (20) ausgeführt wird.
  3. Verfahren nach Anspruch 1 oder 2, wobei die Masse, Form und die Querschnittsfläche der Anbindung des erhöhten Abschnitts (24) relativ zum Werkstückabschnitt (22) und die dazwischen liegende Temperaturdifferenz ausreichend gewählt sind, um den Werkstückabschnitt (22) in den Bereichen von Temperaturen und Zeitspannen zu halten, die zum Warmauslagern notwendig sind.
  4. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Abkühlen durch selektives Abschrecken über das Ansprühen der Oberfläche des Werkstückabschnitts (22) mit einem Abschreckfluid (32) erfolgt.
  5. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Abschreckfluid (32) Wasser ist.
  6. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Abschrecken über Wassernebel stattfindet.
  7. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Abschrecken eingeleitet wird, wenn der Guss (22) ungefähr eine Temperatur über 350°C aufweist.
  8. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Abschrecken eine Dauer von unter 5 Minuten beträgt.
  9. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Abschrecken abgebrochen wird, wenn der Werkstückabschnitt (22) eine Temperatur im Bereich von 100°C bis 130°C erreicht, während der erhöhte Abschnitt weiterhin über 300°C aufweist.
  10. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Abschrecken abgebrochen wird, wenn der Werkstückabschnitt (22) ungefähr 130°C erreicht.
  11. Verfahren nach einem der Ansprüche 1 bis 9, wobei das Abschrecken abgebrochen wird, wenn der Werkstückabschnitt (22) in etwa 120°C erreicht.
  12. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Warmauslagern des Werkstückabschnitts (22) bei einer Temperatur zwischen 140°C und 250°C stattfindet.
  13. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Warmauslagern des Werkstückabschnitts (22) bei einer Temperatur zwischen 180°C und 220°C stattfindet.
  14. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Warmauslagern in einer Zeitspanne zwischen zwei und fünf Stunden stattfindet.
  15. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Werkstückabschnitt (22) nach dem Warmauslagern entkernt wird.
  16. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Guss (20) während des Warmauslagerns isoliert ist, um die Dauer des Warmauslagerns ohne Zuführen von Wärme zum Guss (20) zu verlängern.
  17. Verfahren nach einem der vorhergehenden Ansprüche, wobei eine mit Wärme behandelbare Aluminiumlegierung Eigenschaften besitzt, einschließlich Härte und Festigkeit, die durch Ausscheidungshärten verbessert werden.
  18. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Guss (20) aus einer Aluminiumlegierung der 3xx.x Reihe nach der Klassifizierung der Aluminum Association (AA) erstellt wird, der Al, Si, & Cu oder Mg als Gusshauptbestandteile aufweist, mit den Härtegraden T6 oder T7 entsprechenden Eigenschaften.
  19. Verfahren nach Anspruch 18, wobei der Guss (20) aus einer A319 Aluminiumlegierung mit bis zu 5% Kupfergehalt hergestellt wird.
  20. Verfahren nach einem der vorhergehenden Ansprüche, weiterhin umfassend:
    Erstarren und Herausnahme des Gusses (20) aus seiner Form während die Temperatur des Gusses über 400°C beträgt; Aufheizen der Güsse (20) in einem Lösungsglühofen auf eine Lösungswärmebehandlungstemperatur über eine Zeitspanne von ungefähr 2 bis 7 Stunden.
  21. Verfahren nach Anspruch 20, wobei das Aufheizen der Güsse (20) in einem Lösungsglühofen auf einen Bereich von Lösungswärmebehandlungstemperaturen zwischen ungefähr 480°C bis 495°C erfolgt.
  22. Verfahren nach Anspruch 20 oder 21, das weiterhin ein natürliches Abkühlen des Gusses (20) nach der Entnahme aus seiner Form und vor der Lösungswärmebehandlung der Güsse umfasst.
  23. Verfahren zum Herstellen eines Werkstücks, die Schritte umfassend:
    Durchführen des Verfahrens nach einem der Ansprüche 1 bis 22;
    und
    Entfernen des erhöhten Abschnitts des Gusses, um das Werkstück herzustellen.
  24. Verfahren nach Anspruch 23, wobei das Werkstück ein Zylinderkopf für einen Automobilmotor ist.
  25. Verwendung einer Vorrichtung zum Abschrecken und Warmauslagern eines erhitzten Aluminiumlegierungsgusses (20), der einen erhöhten Abschnitt (24) und einen Werkstückabschnitt (22) aufweist, die Vorrichtung umfassend:
    - eine Abschreckeinheit (10);
    - eine Auslagerungseinheit;
    - Transportmittel (16), angeordnet, um zumindest einen Guss (20) nacheinander durch die Einheiten zu bewegen, wobei die Transportmittel derart angeordnet sind, um den Guss (20) in der Abschreckeinheit (10) in einer ausgerichteten Lage zu positionieren; und
    - Mittel zum Kühlen (30) zum Abschrecken des Gusses,
    wobei die Verwendung der Vorrichtung das schnelle und selektive Abschrecken des Werkstückabschnitts (22) des Gusses (20) in der ausgerichteten Lage umfasst, hauptsächlich unter Ausschluss des erhöhten Abschnitts (24), dessen erhöhter Abschnitt (24) deswegen ursprünglich eine relativ höhere Temperatur beibehalten wird.
  26. Verwendung einer Vorrichtung nach Anspruch 25, wobei die Einheiten Teil einer kontinuierlichen Fertigungslinie sind; die Abschreckeinheit (10) eine abgeschlossene Sprühkammer ist; die Mittel zum Kühlen (30) mindestens einen Abschreckungs-Flüssigkeits-Sprüher aufweisen, der ausgerichtet ist, um im Wesentlichen direkt auf den Werkstückabschnitt (22) des Gusses einzuwirken, der durch die Transportmittel (16) in der ausgerichteten Lage zugeführt wird.
  27. Verwendung einer Vorrichtung nach Anspruch 25 oder 26, wobei die Auslagerungseinheit eine isolierte Tunnelkammer ist.
  28. Verwendung einer Vorrichtung nach einem der Ansprüche 25 bis 27, wobei die Auslagerungseinheit nicht erneut über einen Ofen erhitzt wird.
  29. Verwendung einer Vorrichtung nach einem der Ansprüche 25 bis 28, wobei die Mittel zur Kühlung (30) eine Mehrzahl von in Abständen entlang der Fertigungslinie angeordneten Abschreck-Flüssigkeits-Sprühern aufweisen, wobei jeder im Wesentlichen direkt auf den Werkstückabschnitt (22) der Güsse (20) einwirkt, die nacheinander durch die Transportmittel (16) in der ausgerichteten Lage zugeführt werden, um das Abschrecken des Werkstückabschnitts (22) zu erreichen.
  30. Verwendung einer Vorrichtung nach einem der Ansprüche 25 bis 29, wobei die Auslagerungseinheit nur über Restwärme, einschließlich der eines Wärmetauschers, erhitzt wird.
EP00987590A 2000-12-14 2000-12-14 Verfahren und vorrichtung zur vereinfachten herstellung von wärmebehandelbaren aluminiumlegierungsgussteilen mit künstlicher selbstalterung Expired - Lifetime EP1530651B1 (de)

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PCT/IB2000/001993 WO2002048419A2 (en) 1999-12-10 2000-12-14 Method and apparatus for simplified production of heat treatable aluminum alloy castings with artificial self-aging

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EP1530651A2 EP1530651A2 (de) 2005-05-18
EP1530651A4 EP1530651A4 (de) 2005-05-18
EP1530651B1 true EP1530651B1 (de) 2010-11-24

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JP (1) JP2004515655A (de)
AU (1) AU2001223891A1 (de)
BR (1) BR0017079A (de)
CA (1) CA2398600A1 (de)
DE (1) DE60045291D1 (de)
MX (1) MXPA02007829A (de)

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DE102006057661B4 (de) * 2006-12-07 2019-07-11 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Druckgießen von Bauteilen
JP5935619B2 (ja) * 2012-09-18 2016-06-15 マツダ株式会社 Ａｌ合金製鋳造品の冷却方法及び冷却装置
DE102014111920B4 (de) * 2014-08-20 2017-04-13 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines Kraftfahrzeugbauteils aus einer härtbaren Aluminiumlegierung
CN108707737A (zh) * 2018-08-17 2018-10-26 海安金锻工业有限公司 一种自动固溶生产线及固溶处理方法
CN110788305B (zh) * 2019-10-26 2021-10-08 含山县大力精密机械有限公司 一种煤改电用水泵体铸件加工用快速冷却装置
CN112779484B (zh) * 2020-12-25 2021-12-10 湖南科技大学 一种提高时效强化铝合金焊接性能的装置及方法
CN113604638B (zh) * 2021-08-04 2023-05-09 广东韶铸精锻有限公司 一种汽车锻造轮毂加工用热处理系统
CN114959211B (zh) * 2022-03-23 2024-02-09 中国机械总院集团北京机电研究所有限公司 一种一机多用式大型铝合金工件淬火设备
CN115365482B (zh) * 2022-08-29 2023-09-08 四川实美科技有限公司 一种铸造加工用冷却装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5536337A (en) * 1992-02-27 1996-07-16 Hayes Wheels International, Inc. Method for heat treating a metal component
EP0743372B1 (de) * 1995-05-19 2002-01-23 Tenedora Nemak, S.A. de C.V. Verfahren und Vorrichtung zur vereinfachten Herstellung einer wärmebehandlungsfähigen Aluminiumlegierung
DE19524176C1 (de) * 1995-07-03 1996-09-26 Daimler Benz Ag Verfahren zum Zwischenabschrecken von aus einem Lösungs-Glühofen kommenden Leichtmetall-Gußstücken

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2597450C2 (ru) * 2014-08-27 2016-09-10 федеральное государственное бюджетное образовательное учреждение высшего образования "Самарский государственный технический университет" (ФГБОУ ВО "СамГТУ") Способ получения отливки из литейного алюминиевого сплава с вакуумно-плазменным покрытием

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CA2398600A1 (en) 2002-06-20
JP2004515655A (ja) 2004-05-27
BR0017079A (pt) 2007-04-10
DE60045291D1 (de) 2011-01-05

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