EP1124997A1 - Annealing basket for degreasing and softening aluminium parts - Google Patents

Annealing basket for degreasing and softening aluminium parts

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Publication number
EP1124997A1
EP1124997A1 EP99950673A EP99950673A EP1124997A1 EP 1124997 A1 EP1124997 A1 EP 1124997A1 EP 99950673 A EP99950673 A EP 99950673A EP 99950673 A EP99950673 A EP 99950673A EP 1124997 A1 EP1124997 A1 EP 1124997A1
Authority
EP
European Patent Office
Prior art keywords
aluminum
basket
annealing
profile
frame
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
EP99950673A
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German (de)
French (fr)
Other versions
EP1124997B1 (en
Inventor
Gottfried Jungblut
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.)
Aluminium Rheinfelden GmbH
Original Assignee
Aluminium Rheinfelden GmbH
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Filing date
Publication date
Application filed by Aluminium Rheinfelden GmbH filed Critical Aluminium Rheinfelden GmbH
Priority to EP99950673A priority Critical patent/EP1124997B1/en
Publication of EP1124997A1 publication Critical patent/EP1124997A1/en
Application granted granted Critical
Publication of EP1124997B1 publication Critical patent/EP1124997B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0025—Supports; Baskets; Containers; Covers

Definitions

  • the invention relates to a glow basket made of steel for receiving bulk parts made of aluminum for degreasing and soft annealing, with a bottom and projecting side walls delimited by a frame.
  • Incandescent baskets of the type mentioned at the outset are used, for example, for degreasing and soft annealing aluminum slugs for the production of extruded can and tube bodies as well as technical extruded parts.
  • Incandescent baskets of conventional design consist of a frame in which the bottom and the side walls are welded.
  • an annealing temperature in the range between approximately 350 and 500 ° C.
  • the lubricant film initially adhering to the surface of the slugs evaporates, so that the slugs lose their initial lubricity with increasing temperature.
  • the invention is therefore based on the object of providing a glow basket of the type mentioned at the outset, with which the local deformations which arise due to the build-up of pressure as a result of the thermal expansion on the soft aluminum parts can be avoided.
  • At least one side wall with the frame has at least one when it is heated to the annealing temperature.
  • the plastically deforming aluminum element is connected in such a way that the side wall shifts outwards by at least one area adjacent to the frame while increasing the basket volume.
  • the pressure is reduced by the plastic deformation of the element softening to the same extent as the aluminum parts by the displacement of the side wall.
  • angles are attached to at least one side wall in an edge region, which are opposite angles attached to the frame and which together form a receiving space for inserting the element.
  • the element is preferably a profile or a plate made of aluminum with an essentially rectangular cross section.
  • the frame can also be designed as a U-profile which is open at the bottom and the element can be inserted into the U-profile as an aluminum profile with a substantially rectangular cross-section, the side wall abutting the aluminum profile laterally in an edge region.
  • the annealing basket according to the invention can be used for degreasing and soft annealing of any kind of aluminum parts.
  • a particularly preferred area of application is the degreasing and soft annealing of slugs made of aluminum for the extrusion molding of can and tube bodies as well as technical extrusion parts.
  • FIG. 1 is an oblique view of a glow basket filled with slugs.
  • FIG. 2 is a partial section through the glow basket of Figure 1 along the line l-l in two operating states.
  • FIG. 3 shows a second embodiment of a connection between the frame and the side wall of a glow basket in two operating states
  • FIG. 4 shows an oblique view of a third embodiment of a connection between the frame and the side wall of a glow basket
  • FIG. 5 shows the third embodiment of FIG. 4 in two operating states.
  • a glow basket 10 shown in FIG. 1 for degreasing or soft annealing of mass parts consists of frame parts 12 made of steel standing at right angles to one another and joined together to form a frame with an inserted base 14 and side walls 16 of sheet steel rising up from this. At least two opposite side walls 16 and possibly also the bottom 14 are provided with openings or perforations 18.
  • the perforations 18 serve to pass hot gases through the mass parts filled into the glow basket 10 during their glowing in a glow furnace which receives the glow basket 10 and is not shown in the drawing for reasons of clarity.
  • the glow basket 10 has, for example, a width b and a depth t of 1000 mm each, the height h is, for example, 400 mm.
  • the mass parts are stamped slugs 20 made of pure aluminum, which are provided, for example, for extruding aerosol cans.
  • the slugs For example, they have a diameter of 60 mm and a thickness of 4 mm.
  • the bottom 14 and three of the side walls 16 are welded to the frame parts 12.
  • a side wall 16 is detachably inserted into the frame and releasably attached to an upper frame part 12.
  • angle irons 22 are welded to the upper frame part and angle irons 24 to the side wall 16 and are aligned with one another in such a way that they have a cross-section a receiving space for the form-fitting pushing through of a profile 26 made of pure aluminum with an essentially rectangular cross section, for example with a width e of 60 mm and one Form thickness f of 4 mm.
  • FIG. 2a shows the releasable connection between the side wall 16 and the upper or lower frame part 12 in a first operating state before an annealing treatment of the slugs 20.
  • the lower frame part 12 serves as a fixed stop in the exemplary embodiment shown.
  • the side wall 16 is detachably connected to the upper frame part 12 via the profile 26 inserted between the angle irons 22, 24.
  • the surface of the slugs filled for glow in the glow basket 10 is covered by the preceding rolling and punching process with a lubricant film which, when the slugs are poured into the glow basket, leads to a practically unimpeded sliding of the slugs 20 and thus to a compact filling of the glow basket 10.
  • the glow basket 10 filled with slugs 20 is flowed through by hot gases in the annealing furnace, the slugs 20 heating up to a temperature T between approximately 350 and 500 ° C. during the annealing process.
  • the evaporation of the lubricant film increasingly hinders the slugs 20 from joining together as the temperature rises.
  • the slugs 20 expand with increasing temperature.
  • the above-mentioned pressure build-up within the glow basket J0 can be counteracted during the glow.
  • the profile 26 made of pure aluminum heats up to approximately the same extent, ie the profile 26 softens as well as the slugs 20.
  • the profile 26 begins to plastically deform under the pressure acting on the side wall.
  • the side wall 16 moves outwards in the region of the upper frame part 12 by a distance s of, for example, approximately 15 mm (FIG. 2b).
  • the deformation energy is almost completely absorbed by the profile 26, so that the slugs 20 no longer have any injuries after the annealing. Since the heating and the evaporation of the lubricating film in the lower region of the glow basket 10 are slowed down compared to the upper region, it is not necessary; to provide the connection between the side wall 16 and the lower frame part 12 also with a plastically deformable connection. After the. Annealing operation, the plastically deformed profile 26 is replaced by a new profile and the annealing basket is available again for the next annealing process.
  • FIG. 3 Another embodiment of a releasable connection between a frame part 12 and a side wall 16 is shown in FIG. 3.
  • the upper frame part is designed as a U-profile frame 28, the mutual distance between the legs of the downwardly open U-profile being adapted to the thickness f of the profile 26, so that the latter is held in a force-locking manner.
  • the deformation of the profile 26 by the pressure P building up during the temperature increase takes place in the same way as in the variant of FIG. 2 and also leads here to a displacement of the side wall in the region of the upper frame part 12 by an amount s of the order of 15 mm (Fig. 3b).
  • FIGS. 4 and 5 Another embodiment of a releasable connection between a frame part 12 and a side wall 16 is shown in FIGS. 4 and 5.
  • the lower angle iron 24 is fixed here to a spacer 25, which in turn is welded to the side wall 16.
  • Frame part 12 On the top .
  • Frame part 12 is an angle stop 29 directed towards the inside of the glow basket and welded on as a rear stop for the detachably fastened side wall 16.
  • An aluminum profile in the form of a plate is inserted between the angle irons 22, 24.
  • a locking bar 27 is arranged on the lower angle iron 24 in the tilting direction.
  • connection system shown in FIGS. 4 and 5 has a length of, for example, 100 mm.
  • a connection system For the releasable attachment of a side wall 16 to an upper frame part 12, it is generally sufficient to arrange such a connection system approximately in the middle of the frame part.
  • the after a glow Operation-deformed aluminum plate 26 can be knocked out of its holder formed by the two angle irons 22, 24 without great effort and replaced by a new plate for the next annealing process.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Coating With Molten Metal (AREA)
  • Forging (AREA)

Abstract

Annealing cage has at least one sidewall (16) connected to a frame (12) via at least one plastically deformed element (26) while heating to the annealing temperature (T) under a pressure produced in the cage by the heat expansion of the aluminum parts (20) onto the sidewalls so that the sidewall is pushed in a region bordering the frame about a quantity from outside thus increasing the cage volume.

Description

Glühkorb zum Entfettungs- und Weichglühen von AluminiumteilenAnnealing basket for degreasing and soft annealing of aluminum parts
Die Erfindung betrifft einen Glühkorb aus Stahl für die Aufnahme von Massenteilen aus Aluminium zum Entfettungs- und Weichglühen, mit einem Boden und von diesem aufragenden, von einem Rahmen begrenzten Seitenwänden.The invention relates to a glow basket made of steel for receiving bulk parts made of aluminum for degreasing and soft annealing, with a bottom and projecting side walls delimited by a frame.
Glühkörbe der eingangs genannten Art werden beispielsweise zum Entfet- tungs- und Weichglühen von Butzen aus Aluminium zur Herstellung von fliessgepressten Dosen- und Tubenkörpern sowie technischen Fliesspresstei- len verwendet. Glühkörbe herkömmlicher Bauart bestehen aus einem Rahmen, in den der Boden und die Seitenwände eingeschweisst sind. Beim Aufheizen des mit Butzen gefüllten Glühkorbes auf eine Glühtemperatur im Bereich zwi- sehen etwa 350 und 500°C verdampft der anfänglich an der Oberfläche der Butzen haftende Schmiermittelfilm, so dass die Butzen mit steigender Temperatur ihre anfängliche Gleitfähigkeit verlieren. Durch die Wärmeausdehnung der Butzen baut sich im Glühkorb ein gegen die Seitenwände gerichteter Druck auf, der wegen der starken Erweichung des Aluminiums und der im Vergleich zum Stahlkorb etwa dreimal höheren Wärmeausdehnung insbesondere an den Kanten der gestanzten Butzen zu Materialverformungen führt, die bei der späteren Weiterverarbeitung der Butzen durch Fliesspressen Produktionsstörungen und Ausschuss zur Folge haben können.Incandescent baskets of the type mentioned at the outset are used, for example, for degreasing and soft annealing aluminum slugs for the production of extruded can and tube bodies as well as technical extruded parts. Incandescent baskets of conventional design consist of a frame in which the bottom and the side walls are welded. When the glow basket filled with slugs is heated to an annealing temperature in the range between approximately 350 and 500 ° C., the lubricant film initially adhering to the surface of the slugs evaporates, so that the slugs lose their initial lubricity with increasing temperature. Due to the thermal expansion of the slugs, pressure builds up against the side walls in the glow basket, which due to the strong softening of the aluminum and the thermal expansion which is about three times higher than that of the steel basket, leads to material deformations at the edges of the stamped slugs, which leads to subsequent processing the slugs from extrusion can cause production disruptions and rejects.
Der Erfindung liegt deshalb die Aufgabe zugrunde, einen Glühkorb der eingangs genannten Art zu schaffen, mit dem die durch den Druckaufbau infolge der Wärmeausdehnung an den weichen Aluminiumteilen entstehenden lokalen Verformungen vermieden werden können.The invention is therefore based on the object of providing a glow basket of the type mentioned at the outset, with which the local deformations which arise due to the build-up of pressure as a result of the thermal expansion on the soft aluminum parts can be avoided.
Zur erfindungsgemässen Lösung der Aufgabe führt, dass zumindest eine Seitenwand mit dem Rahmen über mindestens ein beim Aufheizen auf Glühtempe- ratur unter dem im Glühkorb durch die Wärmeausdehnung der Aluminiumteile auf die Seitenwände entstehenden Druck sich plastisch verformendes Element aus Aluminium so verbunden ist, dass sich die Seitenwand unter Vergrösse- rung des Korbvolumens in zumindest einem an den Rahmen angrenzenden Bereich um ein Mass nach aussen verschiebt.To achieve the object according to the invention, at least one side wall with the frame has at least one when it is heated to the annealing temperature. Under the pressure in the glow basket due to the thermal expansion of the aluminum parts on the side walls, the plastically deforming aluminum element is connected in such a way that the side wall shifts outwards by at least one area adjacent to the frame while increasing the basket volume.
Bei der erfindungsgemässen Verbindung zwischen Rahmen und Seitenwand wird der Druck durch die plastische Verformung des in gleichem Ausmass wie die Aluminiumteile erweichenden Elementes durch die Verschiebung der Sei- tenwand abgebaut.In the connection according to the invention between the frame and the side wall, the pressure is reduced by the plastic deformation of the element softening to the same extent as the aluminum parts by the displacement of the side wall.
Bei einer ersten Ausführungsvariante des erfindungsgemässen Glühkorbes sind an zumindest einer Seitenwand in einem Randbereich Winkel befestigt, die am Rahmen befestigten Winkeln gegenüberstehen und mit diesen einen Aufnahmeraum zum Einschieben des Elementes bilden. Das Element ist bevorzugt ein Profil oder eine Platte aus Aluminium mit im wesentlichen rechtek- kigem Querschnitt.In a first embodiment variant of the glow basket according to the invention, angles are attached to at least one side wall in an edge region, which are opposite angles attached to the frame and which together form a receiving space for inserting the element. The element is preferably a profile or a plate made of aluminum with an essentially rectangular cross section.
Der Rahmen kann auch als nach unten offenes U-Profil ausgestaltet und das Element als Profil aus Aluminium mit im wesentlichen rechteckigem Querschnitt in das U-Profil eingesetzt sein, wobei die Seitenwand in einem Randbereich dem Profil aus Aluminium seitlich anliegt.The frame can also be designed as a U-profile which is open at the bottom and the element can be inserted into the U-profile as an aluminum profile with a substantially rectangular cross-section, the side wall abutting the aluminum profile laterally in an edge region.
Der erfindungsgemässe Glühkorb kann zum Entfettungs- und Weichglühen jeglicher Art von Aluminiumteilen eingesetzt werden. Ein besonders bevorzugter Anwendungsbereich ist das Entfettungs- und Weichglühen von Butzen aus Aluminium zum Fliesspressen von Dosen- und Tubenkörpern sowie technischen Fliesspressteilen.The annealing basket according to the invention can be used for degreasing and soft annealing of any kind of aluminum parts. A particularly preferred area of application is the degreasing and soft annealing of slugs made of aluminum for the extrusion molding of can and tube bodies as well as technical extrusion parts.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie an- hand der Zeichnung; diese zeigt schematisch inFurther advantages, features and details of the invention result from the following description of preferred exemplary embodiments as well as hand of drawing; this shows schematically in
- Fig. 1 eine Schrägsicht auf einen mit Butzen gefüllten Glühkorb;- Figure 1 is an oblique view of a glow basket filled with slugs.
- Fig. 2 einen teilweisen Schnitt durch den Glühkorb von Fig. 1 nach deren Linie l-l in zwei Betriebszuständen;- Figure 2 is a partial section through the glow basket of Figure 1 along the line l-l in two operating states.
- Fig. 3 eine zweite Ausführungsform einer Verbindung zwischen Rahmen und Seitenwand eines Glühkorbes in zwei Betriebszuständen;3 shows a second embodiment of a connection between the frame and the side wall of a glow basket in two operating states;
- Fig. 4 eine Schrägsicht auf eine dritte Ausführungsform einer Verbindung zwischen Rahmen und Seitenwand eines Glühkorbes;4 shows an oblique view of a third embodiment of a connection between the frame and the side wall of a glow basket;
- Fig. 5 die dritte Ausführungsform von Fig. 4 in zwei Betriebszuständen.5 shows the third embodiment of FIG. 4 in two operating states.
Ein in Fig. 1 dargestellter Glühkorb 10 zum Entfettungs- bzw. Weichglühen von Massenteilen besteht aus rechtwinklig zueinander stehenden, zu einem Rahmen zusammengefügten Rahmenteilen 12 aus Stahl mit eingesetztem Boden 14 und von diesem aufragenden Seitenwänden 16 aus Stahlblech. Zumindest zwei einander gegenüberstehende Seitenwände 16 und gegebenenfalls auch der Boden 14 sind mit Durchbrüchen oder Perforationen 18 versehen. Die Perforationen 18 dienen zum Durchleiten heisser Gase durch die in den Glühkorb 10 eingefüllten Massenteile während deren Glühung in einem den Glüh- korb 10 aufnehmenden, in der Zeichnung aus Gründen der besseren Übersicht nicht dargestellten Glühofen.A glow basket 10 shown in FIG. 1 for degreasing or soft annealing of mass parts consists of frame parts 12 made of steel standing at right angles to one another and joined together to form a frame with an inserted base 14 and side walls 16 of sheet steel rising up from this. At least two opposite side walls 16 and possibly also the bottom 14 are provided with openings or perforations 18. The perforations 18 serve to pass hot gases through the mass parts filled into the glow basket 10 during their glowing in a glow furnace which receives the glow basket 10 and is not shown in the drawing for reasons of clarity.
Der Glühkorb 10 hat beispielsweise eine Breite b und eine Tiefe t von je 1000 mm, die Höhe h beträgt beispielsweise 400 mm. Im hier dargestellten Beispiel sind die Massenteile gestanzte Butzen 20 aus Reinaluminium, die beispielsweise zum Fliesspressen von Aerosoldosen vorgesehen sind. Die Butzen wei- sen beispielsweise einen Durchmesser von 60 mm und eine Dicke von 4 mm auf.The glow basket 10 has, for example, a width b and a depth t of 1000 mm each, the height h is, for example, 400 mm. In the example shown here, the mass parts are stamped slugs 20 made of pure aluminum, which are provided, for example, for extruding aerosol cans. The slugs For example, they have a diameter of 60 mm and a thickness of 4 mm.
Der Boden 14 und drei der Seitenwände 16 sind mit den Rahmenteilen 12 ver- schweisst. Eine Seitenwand 16 ist lösbar in den Rahmen eingesetzt und an einem oberen Rahmenteil 12 lösbar befestigt. Hierzu sind am oberen Rahmenteil Winkeleisen 22 und an der Seitenwand 16 Winkeleisen 24 ange- schweisst und so aufeinander ausgerichtet, dass sie querschnittlich einen Aufnahmeraum zum formschlüssigen Durchschieben eines Profils 26 aus Reinaluminium mit im wesentlichen rechteckigem Querschnitt mit beispielsweise einer Breite e von 60 mm und einer Dicke f von 4 mm bilden.The bottom 14 and three of the side walls 16 are welded to the frame parts 12. A side wall 16 is detachably inserted into the frame and releasably attached to an upper frame part 12. For this purpose, angle irons 22 are welded to the upper frame part and angle irons 24 to the side wall 16 and are aligned with one another in such a way that they have a cross-section a receiving space for the form-fitting pushing through of a profile 26 made of pure aluminum with an essentially rectangular cross section, for example with a width e of 60 mm and one Form thickness f of 4 mm.
Fig. 2a zeigt die lösbare Verbindung zwischen der Seitenwand 16 und dem oberen bzw. unteren Rahmenteil 12 in einem ersten Betriebszustand vor einer Glühbehandlung der Butzen 20. Der untere Rahmenteil 12 dient im gezeigten Ausführungsbeispiel als feststehender Anschlag. Am oberen Korbrand ist die Seitenwand 16 über das zwischen die Winkeleisen 22, 24 eingeschobene Profil 26 lösbar mit dem oberen Rahmenteil 12 verbunden.2a shows the releasable connection between the side wall 16 and the upper or lower frame part 12 in a first operating state before an annealing treatment of the slugs 20. The lower frame part 12 serves as a fixed stop in the exemplary embodiment shown. At the upper edge of the basket, the side wall 16 is detachably connected to the upper frame part 12 via the profile 26 inserted between the angle irons 22, 24.
Die Oberfläche der zum Glühen in den Glühkorb 10 eingefüllten Butzen ist vom vorangehenden Walz- und Stanzvorgang mit einem Schmiermittelfilm überzogen, der beim Einfüllen der Butzen in den Glühkorb zu einem praktisch ungehinderten Aufeinandergleiten der Butzen 20 und damit zu einer kompakten Füllung des Glühkorbes 10 führt. Der mit Butzen 20 gefüllte Glühkorb 10 wird im Glühofen von heissen Gasen durchströmt, wobei sich die Butzen 20 während des Glühvorgangs auf eine Temperatur T zwischen etwa 350 und 500 °C erwärmen. Durch das Verdampfen des Schmiermittelfilms wird das Aneinan- dergieiten der Butzen 20 mit -steigender Temperatur zunehmend behindert. Gleichzeitig dehnen sich die Butzen 20 mit steigender Temperatur aus. Da die Butzen nicht mehr ungehindert aneinander gleiten können, baut sich bei einem herkömmlichen Glühkorb mit in einem Rahmen fest eingeschweissten Seiten- blechen ein Druck auf. Da die Wärmeausdehnung von Aluminium etwa dreimal grösser ist als diejenige von Stahl und Aluminium beim Glühen im angegebenen Temperaturbereich stark erweicht, führt der Druckaufbau zu Verformungen in der Form von Vertiefungen an den Butzen im Bereich der Stanzkanten. Diese oberflächlichen Verletzungen haben beispielsweise zur Folge, dass die Butzen 20 beim nachfolgenden Fliesspressen infolge Passungenauigkeit im Bereich der Matrize zu Fehloperationen und damit zu Betriebsunterbrüchen führen können.The surface of the slugs filled for glow in the glow basket 10 is covered by the preceding rolling and punching process with a lubricant film which, when the slugs are poured into the glow basket, leads to a practically unimpeded sliding of the slugs 20 and thus to a compact filling of the glow basket 10. The glow basket 10 filled with slugs 20 is flowed through by hot gases in the annealing furnace, the slugs 20 heating up to a temperature T between approximately 350 and 500 ° C. during the annealing process. The evaporation of the lubricant film increasingly hinders the slugs 20 from joining together as the temperature rises. At the same time, the slugs 20 expand with increasing temperature. Since the slugs can no longer slide freely against each other, a conventional glow basket with side welded in a frame pressure on. Since the thermal expansion of aluminum is about three times greater than that of steel and aluminum during annealing in the specified temperature range, the pressure build-up leads to deformations in the form of depressions on the slugs in the area of the punched edges. These superficial injuries have the consequence, for example, that the slugs 20 in the subsequent extrusion can lead to incorrect operations and thus to business interruptions due to a lack of fit in the area of the die.
Mit der in Fig. 2a gezeigten Ausführungsform einer Verbindung zwischen einer Seitenwand 16 und einem Rahmenteil 12 kann dem oben erwähnten Druckaufbau innerhalb des Glühkorbes J0 während der Glühung entgegengewirkt werden. Bei der Erwärmung des mit-Butzen gefüllten Glühkorbes 10 erwärmt sich das Profil 26 aus Reinaluminium etwa im gleichen Ausmass, d.h. das Profil 26 erweicht ebenso wie die Butzen 20. Sobald der horizontal durch Ausdehnung der Butzen 20 vom Inneren des Glühkorbes 10 auf die Seitenwände 26 wirkende Druck P ein gewisses Ausmass überschreitet, beginnt sich das Profil 26 unter dem auf dieses einwirkenden Druck der Seitenwand plastisch zu verfor- men. Hierbei bewegt sich die Seitenwand 16 im Bereich des oberen Rahmen- teiles 12 um eine Strecke s von beispielsweise etwa 15 mm nach aussen (Fig. 2b). Die Verformungsenergie -wird praktisch vollständig vom Profil 26 aufgenommen, so dass die, Butzen 20 nach dem Glühen keine Verletzungen mehr aufweisen. Da die- Erwärmung und das Abdampfen des Schmierfilms im unteren Bereich des Glühkorbes 10 gegenüber dem oberen Bereich verlangsamt auftritt, ist es nicht erforderlich; die Verbindung zwischen Seitenwand 16 und unterem Rahmenteil 12 ebenfalls mit einer plastisch verformbaren Verbindung zu versehen. Nach erfolgter .Glühoperation wird das plastisch verformte Profil 26 durch ein neues -Profil ersetzt und der Glühkorb steht für einen nächsten Glühvorgang wieder zur Verfügung. Eine andere Ausführungsform einer lösbaren Verbindung zwischen einem Rahmenteil 12 und einer Seitenwand 16 ist in Fig. 3 dargestellt. Der obere Rahmenteil ist als U-Profilrahmen 28 ausgestaltet, wobei der gegenseitige Abstand der Schenkel des nach unten offenen U-Profils der Dicke f des Profils 26 angepasst ist, so dass dieses kraftschlüssig gehalten wird. Die Verformung des Profils 26 durch den sich während der Temperaturerhöhung aufbauenden Druck P erfolgt in gleicher Weise wie bei der Variante von Fig. 2 und führt auch hier zu einer Verschiebung der Seitenwand im Bereich des oberen Rahmenteiles 12 um einen Betrag s in der Grössenordnung von 15 mm (Fig. 3b).With the embodiment of a connection between a side wall 16 and a frame part 12 shown in FIG. 2a, the above-mentioned pressure build-up within the glow basket J0 can be counteracted during the glow. When the glow basket 10 filled with slugs is heated, the profile 26 made of pure aluminum heats up to approximately the same extent, ie the profile 26 softens as well as the slugs 20. As soon as the slugs 20 extend horizontally from the inside of the glow basket 10 onto the side walls 26 acting pressure P exceeds a certain extent, the profile 26 begins to plastically deform under the pressure acting on the side wall. In this case, the side wall 16 moves outwards in the region of the upper frame part 12 by a distance s of, for example, approximately 15 mm (FIG. 2b). The deformation energy is almost completely absorbed by the profile 26, so that the slugs 20 no longer have any injuries after the annealing. Since the heating and the evaporation of the lubricating film in the lower region of the glow basket 10 are slowed down compared to the upper region, it is not necessary; to provide the connection between the side wall 16 and the lower frame part 12 also with a plastically deformable connection. After the. Annealing operation, the plastically deformed profile 26 is replaced by a new profile and the annealing basket is available again for the next annealing process. Another embodiment of a releasable connection between a frame part 12 and a side wall 16 is shown in FIG. 3. The upper frame part is designed as a U-profile frame 28, the mutual distance between the legs of the downwardly open U-profile being adapted to the thickness f of the profile 26, so that the latter is held in a force-locking manner. The deformation of the profile 26 by the pressure P building up during the temperature increase takes place in the same way as in the variant of FIG. 2 and also leads here to a displacement of the side wall in the region of the upper frame part 12 by an amount s of the order of 15 mm (Fig. 3b).
Eine weitere Ausführungsform einer lösbaren Verbindung zwischen einem Rahmenteil 12 und einer Seitenwand 16 ist in den Fig. 4 und 5 dargestellt. Im Gegensatz zu der in Fig. 2 gezeigten Variante ist hier das untere Winkeleisen 24 an einem Distanzhalter 25 festgelegt, der seinerseits an der Seitenwand 16 angeschweisst ist. Am oberen .Rahmenteil 12 ist ein nach dem Innern des Glühkorbes gerichteter Winkelanschlag 29 als rückwärtiger Anschlag für die lösbar befestigte Seitenwand 16 angeschweisst. Zwischen die Winkeleisen 22, 24 ist ein Aluminiumprofil in der Form einer Platte eingeschoben. Zur Sicherung der Aluminiumplatte gegen Herausfallen beim Kippen bzw. Entleeren des Glühkorbes ist am unteren Winkeleisen 24 in Kipprichtung eine Riegelsperre 27 angeordnet. Die Verformung der Aluminiumplatte 26 durch den sich während der Temperaturerhöhung aufbauenden Druck P erfolgt in gleicher Weise wie bei den Varianten von Fig. 2 und 3 und führt auch hier zu einer Verschiebung der Seitenwand im Bereich des oberen Rahmenteils 12 um einen Betrag s in der Grössenordnung von 15 mm vom rückwärtigen Winkelanschlag 29 bis zum Anschlag mit dem oberen Rahmenteil 12 (Fig. 4b).Another embodiment of a releasable connection between a frame part 12 and a side wall 16 is shown in FIGS. 4 and 5. In contrast to the variant shown in FIG. 2, the lower angle iron 24 is fixed here to a spacer 25, which in turn is welded to the side wall 16. On the top . Frame part 12 is an angle stop 29 directed towards the inside of the glow basket and welded on as a rear stop for the detachably fastened side wall 16. An aluminum profile in the form of a plate is inserted between the angle irons 22, 24. To secure the aluminum plate against falling out when the glow basket is tilted or emptied, a locking bar 27 is arranged on the lower angle iron 24 in the tilting direction. The deformation of the aluminum plate 26 by the pressure P building up during the temperature increase takes place in the same way as in the variants of FIGS. 2 and 3 and also leads here to a displacement of the side wall in the region of the upper frame part 12 by an amount s of the order of magnitude 15 mm from the rear angle stop 29 to the stop with the upper frame part 12 (FIG. 4b).
Das in den Fig. 4 und 5 gezeigte Verbindungssystem hat eine Länge von beispielsweise 100 mm. Zur lösbaren Befestigung einer Seitenwand 16 an einem oberen Rahmenteil 12 genügt in der Regel die Anordnung eines derartigen Verbindungssystems etwa -in der JMitte des Rahmenteils. Die nach einer Glüh- Operation verformte Aluminiumplatte 26 lässt sich ohne grossen Kraftaufwand aus ihrer durch die beiden Winkeleisen 22, 24 gebildeten Halterung herausschlagen und für den nächsten Glühvorgang durcrr eine neue Platte ersetzen. The connection system shown in FIGS. 4 and 5 has a length of, for example, 100 mm. For the releasable attachment of a side wall 16 to an upper frame part 12, it is generally sufficient to arrange such a connection system approximately in the middle of the frame part. The after a glow Operation-deformed aluminum plate 26 can be knocked out of its holder formed by the two angle irons 22, 24 without great effort and replaced by a new plate for the next annealing process.

Claims

Patentansprüche claims
1. Glühkorb aus Stahl für die Aufnahme von Massenteilen (20) aus Aluminium zum Entfettungs- und Weichglühen, mit einem Boden (14) und von diesem aufragenden, von einem Rahmen (12) begrenzten Seitenwänden(16),1. annealing basket made of steel for accommodating mass parts (20) made of aluminum for degreasing and soft annealing, with a bottom (14) and side walls (16) projecting from it, bounded by a frame (12),
dadurch gekennzeichnet, dasscharacterized in that
zumindest eine Seitenwand (16) mit dem Rahmen (12) über mindestens ein beim Aufheizen auf Glühtemperatur (T) unter dem im Glühkorb (10) durch die Wärmeausdehnung der Aluminiumteile (20) auf die Seitenwände (16) entstehenden Druck (P) sich plastisch verformendes Element (26, 36) aus Aluminium so verbunden ist, dass sich die Seitenwand (16) unter Ver- grösserung des Korbvolumens in zumindest einem an den Rahmen (12) angrenzenden Bereich um ein Mass (s) nach aussen verschiebt.at least one side wall (16) with the frame (12) plastically plastically over at least one pressure (P) during heating to the annealing temperature (T) below the pressure (P) generated in the annealing basket (10) by the thermal expansion of the aluminum parts (20) on the side walls (16) deforming element (26, 36) made of aluminum is connected such that the side wall (16) moves outwards by at least one area (s) adjacent to the frame (12) while increasing the basket volume.
2. Glühkorb nach Anspruch 1 , dadurch gekennzeichnet, dass an zumindest einer Seitenwand (16) in einem Randbereich Winkel (22) befestigt sind, die am Rahmen (12) befestigten Winkeln (24) gegenüberstehen und mit diesen einen Aufnahmeraum zum Einschieben des Elementes (26) bilden.2. Glow basket according to claim 1, characterized in that on at least one side wall (16) in an edge region angles (22) are attached, the angles (24) attached to the frame (12) face each other and with these a receiving space for inserting the element ( 26) form.
3. Glühkorb nach Anspruch 2, dadurch gekennzeichnet, dass das Element (26) ein Profil oder eine Platte aus Aluminium mit im wesentlichen rechteckigen Querschnitt ist.3. Glow basket according to claim 2, characterized in that the element (26) is a profile or a plate made of aluminum with a substantially rectangular cross section.
4. Glühkorb nach Anspruch 1 , dadurch gekennzeichnet, dass der Rahmen (12) als nach unten offenes U-Profil ausgestaltet und das Element (26) als Profil aus Aluminium mit im wesentlichen rechteckigem Querschnitt in das U-Profil eingesetzt ist und die Seitenwand (16) in einem Randbereich dem Profil aus Aluminium seitlich anliegt. Verwendung des Glühkorbes (10) nach einem der Ansprüche 1 bis 4 zum Entfettungs- und Weichglühen von Butzen aus Aluminium zum Fliesspressen von Dosen- und Tubenkörpern sowie technischen Fliesspressteilen. 4. Glow basket according to claim 1, characterized in that the frame (12) is designed as a downwardly open U-profile and the element (26) is used as a profile made of aluminum with a substantially rectangular cross section in the U-profile and the side wall ( 16) the profile made of aluminum lies laterally in an edge area. Use of the annealing basket (10) according to one of claims 1 to 4 for degreasing and soft annealing of aluminum slugs for extruding can and tube bodies as well as technical extruded parts.
EP99950673A 1998-10-26 1999-10-08 Annealing basket for degreasing and softening aluminium parts Expired - Lifetime EP1124997B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99950673A EP1124997B1 (en) 1998-10-26 1999-10-08 Annealing basket for degreasing and softening aluminium parts

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP98811073 1998-10-26
EP98811073A EP0997541A1 (en) 1998-10-26 1998-10-26 Heat treating box for annealing and degreasing pieces made of aluminium
PCT/EP1999/007549 WO2000024942A1 (en) 1998-10-26 1999-10-08 Annealing basket for degreasing and softening aluminium parts
EP99950673A EP1124997B1 (en) 1998-10-26 1999-10-08 Annealing basket for degreasing and softening aluminium parts

Publications (2)

Publication Number Publication Date
EP1124997A1 true EP1124997A1 (en) 2001-08-22
EP1124997B1 EP1124997B1 (en) 2002-11-06

Family

ID=8236407

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Application Number Title Priority Date Filing Date
EP98811073A Withdrawn EP0997541A1 (en) 1998-10-26 1998-10-26 Heat treating box for annealing and degreasing pieces made of aluminium
EP99950673A Expired - Lifetime EP1124997B1 (en) 1998-10-26 1999-10-08 Annealing basket for degreasing and softening aluminium parts

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP98811073A Withdrawn EP0997541A1 (en) 1998-10-26 1998-10-26 Heat treating box for annealing and degreasing pieces made of aluminium

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US (1) US6558615B1 (en)
EP (2) EP0997541A1 (en)
AT (1) ATE227350T1 (en)
AU (1) AU6336099A (en)
CA (1) CA2348630A1 (en)
DE (1) DE59903357D1 (en)
WO (1) WO2000024942A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6658615B2 (en) * 1998-06-30 2003-12-02 Texas Instruments Incorporated IC with IP core and user-added scan register
DE10315354A1 (en) * 2003-04-03 2004-10-28 Otto Junker Gmbh Glühgestell

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2420428A (en) * 1944-09-02 1947-05-13 Budd Co Heat-treating basket
US2430521A (en) * 1945-09-15 1947-11-11 Mccormick George Clifton Malleable annealing basket
US3179393A (en) * 1962-12-05 1965-04-20 Leon C Bixby Heat treating basket
US3395810A (en) * 1965-11-15 1968-08-06 Alloy Engineering Company Heat treating basket
DE2904722C2 (en) * 1979-02-08 1982-08-05 Rudolf 5000 Köln Klefisch Annealing basket
US4463864A (en) * 1982-09-30 1984-08-07 Deere & Company Basket for retaining parts during heat treatment
DE3444507A1 (en) * 1984-12-06 1986-06-12 Rudolf 5000 Köln Klefisch Transport basket for roller-hearth furnaces
DE3507439A1 (en) * 1985-03-02 1986-09-04 Rudolf 5000 Köln Klefisch GLOW BASKET
DE29721475U1 (en) * 1997-12-05 1998-02-19 Ipsen International GmbH, 47533 Kleve Clamping device for clamping thin-walled workpieces

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0024942A1 *

Also Published As

Publication number Publication date
US6558615B1 (en) 2003-05-06
EP1124997B1 (en) 2002-11-06
ATE227350T1 (en) 2002-11-15
WO2000024942A1 (en) 2000-05-04
AU6336099A (en) 2000-05-15
DE59903357D1 (en) 2002-12-12
CA2348630A1 (en) 2000-05-04
EP0997541A1 (en) 2000-05-03

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