EP0684881B1 - Process and device for applying a temperature profile to metal blocks to be extruded - Google Patents
Process and device for applying a temperature profile to metal blocks to be extruded Download PDFInfo
- Publication number
- EP0684881B1 EP0684881B1 EP94906877A EP94906877A EP0684881B1 EP 0684881 B1 EP0684881 B1 EP 0684881B1 EP 94906877 A EP94906877 A EP 94906877A EP 94906877 A EP94906877 A EP 94906877A EP 0684881 B1 EP0684881 B1 EP 0684881B1
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- European Patent Office
- Prior art keywords
- block
- extrusion
- temperature
- metal
- chilling chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
Definitions
- the blocks heated to the pressing temperature are pressed out of a pick-up through a die, the blocks for insertion having to have a slightly smaller outside diameter compared to the inside diameter of the pick-up.
- the block is first compressed so that it fills the inside diameter of the transducer, it is pressed into the strand by the die.
- the heat released from the forming work flows to the remaining block, the die with the die holder and the sensor.
- direct pressing depending on the prevailing tribological conditions, the block slides or shears along the transducer wall, which generates heat in the area of the block near the surface, and part of this heat also remains in the block under compression.
- an isothermal pressing process is aimed at by varying the pressing speed over the block length or by applying an axial temperature gradient to the block before the pressing process begins, the end on the die side being warmer than the end on the die side.
- inductive shock heaters are used, as are known from DE-B 1 014 678, in which the block is first heated to a uniform lower temperature in a first furnace or furnace part and then subsequently in a second furnace or part of the furnace is partially further inductively heated so that it has a higher end Temperature.
- a better reproducible temperature gradient can be generated by using an induction heating system which is provided with a plurality, usually four or more induction coils, which can be regulated and controlled separately.
- the system is expensive due to its complicated structure and means a considerable additional investment on the part of the operator of the extrusion system.
- the invention relates to a device by means of which a pending block, heated to a pressing temperature suitable for the metal and stored with this block, experiences a temperature influence by quenching in coordination with the timing of the pressing cycle.
- a quenching of the heated block at its end facing away from the pressing of the die and the application of a temperature gradient from one end of the block to the other takes place according to FR-PS 1 049 675 by spraying the end of the block with or by immersing the end of the block in a cooling liquid, thus the compression of the block before the extrusion to the strand initially affects the hotter end facing the die and so the progressive upsetting of the block displaces the air out of the transducer from the die side to the rear, thus avoiding air pockets.
- the temperature gradient resulting from the quenching of one end of the block accommodates an insothermal pressing, but does not produce a sufficiently coordinated and reproducible temperature gradient on the block to be pressed.
- US Pat. No. 5,027,643 provides that a temperature gradient is reproducibly provided on blocks heated above the temperature intended for pressing the metal by controlled cooling which varies over the block length , for which purpose the block emerging from the furnace is introduced on its way to the extrusion press into a cooling device which is provided in a plurality of ring zones arranged axially one behind the other with nozzles for spraying the block with a coolant, and the cooling intensity in the ring zones and the relative movement of a block is adjustable in relation to the ring zones.
- the amount of coolant can only be influenced to a limited extent, because otherwise temperature differences occur around the block circumference.
- the invention is based on the cooling device forming the preamble of claim 1 according to US Pat. No. 5,027,643.
- the quenching chamber of the cooling device is arranged with a vertical axis.
- a structurally advantageous embodiment of the system is obtained if the quenching chamber with a vertical axis is arranged above a means of transport for the blocks consisting of two block dumpers that meet in the vertical axis of the quenching chamber, and with it a ram moving the block relative to the quenching chamber can be raised and lowered is arranged.
- the drive effecting the lifting movement of the plunger and thus the lifting and lowering speed of the plunger can advantageously be regulated.
- extruder 1 consists of an extruder 1, an oven 2, a warming chamber 3, a first block tipper 4, a quenching chamber 5, a second block tipper 6, a walking beam conveyor 7, a block loader 8 and the extruder 1 arranged downstream of an outlet 9 with the usual follow-up devices for the further treatment of the extruded strands.
- the induction furnace 2 which is provided with a coil 12 in a horizontal arrangement, is provided for receiving a plurality of blocks 10a.
- the blocks 10 are advanced in the furnace 2 by a plunger, not shown.
- Downstream of the furnace 2 is a warming chamber 3, in which the next block 10b intended for compression, which has been heated in the furnace 2 to a temperature suitable for its compression, is stored.
- the warming chamber 3 is provided with a coil 13 in order to be able to keep the temperature of the block 10b during the dwell time in the warming chamber 3, the dwell time being otherwise used to compensate for the temperature of the block 10b.
- block 10b is ejected from the warming chamber and reaches block tipper 4, from which the block is tilted into a vertical position below and coaxially with quenching chamber 5.
- a plunger 11 is arranged coaxially with the block and the quenching chamber 5.
- the tappet 11 designed as a toothed rack is guided in a housing 14.
- a pinion 15 driven by a speed-controllable motor 16 the plunger 11 is movable in a vertical direction into an upper position in which the block is lifted from the block tipper 4 and raised to a position above the quenching chamber 5, where it is held by a basket 17 becomes.
- each nozzle rings 18 are provided in the quenching chamber 5 one above the other - in the exemplary embodiment, which form cooling zones, for which purpose the nozzle rings 18 are supplied separately with coolant, so that the quantity of coolant, the coolant pressure, the coolant temperature and the cooling time in each nozzle ring 18, that is to say in each Cooling zone are adjustable for themselves.
- Strips 19 which extend through the cooling chamber 5 and the basket 17 serve to guide a block while it is moving in the cooling chamber 5 and in the basket 17, respectively. Evaporating coolant is sucked out by a fan 20 from a housing 21 encasing the cooling chamber 5 and the basket 17.
- the cooling is regulated in such a way that a temperature distribution is present in the block when it leaves the cooling chamber 5, as can be seen from the diagram in FIG.
- the upper end of the block remained unaffected by the coolant, while the lower end of the block was exposed to the amount, pressure and temperature of the coolant controlled over the entire lowering time of 20 seconds. This temperature distribution is set so that the block can be pressed isothermally at an optimal pressing speed.
- the block tipper 4 As soon as a block 10b brought by block tipper 4 under the cooling chamber 5 has been lifted from the plunger 11 into the area of the cooling chamber 5 and the basket 17, the block tipper 4 in pivoted back to its starting position, where it is ready to receive another block 10b.
- the block tipper 6 is pivoted under the cooling chamber 5, before the block located in the cooling chamber 5 is lowered again by the plunger 11, so that the block tipper 6 can take over the block emerging from the cooling chamber 5.
- the block tipper 6 deposits the block on a walking beam conveyor 7, which feeds the block to the block loader 7, which then loads the block into the extruder 1.
Abstract
Description
Beim Strangpressen von Metall werden die auf Preßtemperatur erwärmten Blöcke aus einem Aufnehmer durch eine Matrize gepreßt, wobei die Blöcke zum Einsetzen einen etwas geringeren Außendurchmesser gegenüber dem Innendurchmesser des Aufnehmens aufweisen müssen. Nachdem zunächst der Block gestaucht wird, so daß er den Innendurchmesser des Aufnehmers ausfüllt, wird er durch die Matrize zum Strang verpreßt. Die aus der Umformarbeit freiwerdende Wärme fließt an den Restblock, die Matrize mit Matrizenhalterung und an den Aufnehmer ab. Beim direkten Pressen findet zudem abhängig von den herrschenden tribologischen Bedingungen eine Gleitung oder Scherung des Blockes entlang der Aufnehmerwandung statt, die im oberflächennahen Bereich des Blockes Wärme erzeugt und ein Teil dieser Wärme verbleibt ebenfalls in dem unter Verpressung stehenden Block. Im Laufe der Pressung wird daher der Block und die Umformzone zunehmend wärmer, mit der Folge, daß das Gefüge des Preßproduktes sowohl in radialer Richtung, als auch über die Preßlänge unterschiedliche mechanische Eigenschaften aufweist. Um diese Erscheinung zu eliminieren strebt man einen isothermischen Preßvorgang an durch Variation der Preßgeschwindigkeit über die Blocklänge oder die Aufbringung eines axialen Temperaturgradienten am Block vor Beginn des Preßvorganges, wobei das matrizenseitige Ende wärmer ist als das stempelseitige Ende.When metal is extruded, the blocks heated to the pressing temperature are pressed out of a pick-up through a die, the blocks for insertion having to have a slightly smaller outside diameter compared to the inside diameter of the pick-up. After the block is first compressed so that it fills the inside diameter of the transducer, it is pressed into the strand by the die. The heat released from the forming work flows to the remaining block, the die with the die holder and the sensor. In direct pressing, depending on the prevailing tribological conditions, the block slides or shears along the transducer wall, which generates heat in the area of the block near the surface, and part of this heat also remains in the block under compression. In the course of the pressing, the block and the forming zone therefore become increasingly warmer, with the result that the structure of the pressed product has different mechanical properties both in the radial direction and over the pressing length. In order to eliminate this phenomenon, an isothermal pressing process is aimed at by varying the pressing speed over the block length or by applying an axial temperature gradient to the block before the pressing process begins, the end on the die side being warmer than the end on the die side.
Zur Erzeugung eines im Preßtakt reproduzierbaren Temperaturgradienten werden induktive Stoßheizungen eingesetzt, wie sie durch die DE-B 1 014 678 bekannt sind, in denen der Block zunächst auf eine gleichmäßige untere Temperatur in einem ersten Ofen bzw. Ofenteil erwärmt und dann anschließend in einem zweiten Ofen bzw. Ofenteil partiell unterschiedlich induktiv weitererwärmt wird, so daß er an einem Ende eine höhere Temperatur aufweist. Ein besserer reproduzierbarer Temperaturgradient läßt sich durch Anwendung einer Induktionserwärmungsanlage erzeugen, die mit einer Mehrzahl, meist vier oder mehr Induktionsspulen versehen ist, die separat geregelt und gesteuert werden können. Die Anlage ist aufgrund ihres komplizierten Aufbaus kostspielig und bedeutet eine erhebliche zusätzliche Investition seitens des Betreibers der Strangpreßanlage. Dennoch reicht die Aufbringung eines axialen Temperaturgradienten durch eine partiell unterschiedliche induktive Erwärmung nicht aus, um unter isothermen Preßbedingungen auch die Preßgeschwindigkeit optimieren zu können. Hierzu bedarf es außer des Aufbringens eines axialen Temperaturgradienten auch der eines reproduzierbaren radialen Temperaturgradienten mit insbesondere bei Anwendung des direkten Preßverfahrens von innen nach außen abnehmender Temperatur, welcher auch durch induktive Erwärmung nicht erzielbar ist.To generate a temperature gradient reproducible in the pressing cycle, inductive shock heaters are used, as are known from DE-B 1 014 678, in which the block is first heated to a uniform lower temperature in a first furnace or furnace part and then subsequently in a second furnace or part of the furnace is partially further inductively heated so that it has a higher end Temperature. A better reproducible temperature gradient can be generated by using an induction heating system which is provided with a plurality, usually four or more induction coils, which can be regulated and controlled separately. The system is expensive due to its complicated structure and means a considerable additional investment on the part of the operator of the extrusion system. Nevertheless, the application of an axial temperature gradient due to a partially different inductive heating is not sufficient to be able to optimize the pressing speed under isothermal pressing conditions. In addition to the application of an axial temperature gradient, this also requires a reproducible radial temperature gradient with a temperature that decreases from the inside to the outside, particularly when using the direct pressing method, which temperature cannot be achieved even by inductive heating.
Die Erfindung bezieht sich auf eine Vorrichtung, mittels derer ein zur Verpressung anstehender, auf eine für das Metall geeignete Preßtemperatur erwärmter und mit dieser bevorrateter Block eine Temperaturbeeinflussung durch Abschreckung in zeitlicher Abstimmung zum Preßzyklus erfährt.The invention relates to a device by means of which a pending block, heated to a pressing temperature suitable for the metal and stored with this block, experiences a temperature influence by quenching in coordination with the timing of the pressing cycle.
Eine Abschreckung des erwärmten Blockes an seinem bei der Verpressung der Matrize abgekehrten Ende und die Aufbringung eines Temperaturgefälles von dem einen zum anderen Blockende erfolgt gemäß der FR-PS 1 049 675 durch Abspritzen des Blockendes mit einer oder durch Eintauchen des Blockendes in eine Kühlflüssigkeit, damit sich die vor der Auspressung zum Strang erfolgende Stauchung des Blocks zunächst am heißeren, der Matrize zugekehrten Ende auswirkt und so die Luft mit fortschreitender Aufstauchung des Blockes aus dem Aufnehmer von der Matrizenseite nach hinten verdrängt wird und damit Lufteinschlüsse vermieden werden. Das durch die Abschreckung eines Blockendes entstehende Temperaturgefälle kommt einem insothermen Pressen zwar entgegen, erbringt aber keinen ausreichend abgestimmten und reproduzierbaren Temperaturgradienten an dem zu verpressenden Block.A quenching of the heated block at its end facing away from the pressing of the die and the application of a temperature gradient from one end of the block to the other takes place according to FR-PS 1 049 675 by spraying the end of the block with or by immersing the end of the block in a cooling liquid, thus the compression of the block before the extrusion to the strand initially affects the hotter end facing the die and so the progressive upsetting of the block displaces the air out of the transducer from the die side to the rear, thus avoiding air pockets. The temperature gradient resulting from the quenching of one end of the block accommodates an insothermal pressing, but does not produce a sufficiently coordinated and reproducible temperature gradient on the block to be pressed.
Um untereinander gleiche Preßprodukte mit über ihre Länge gleichen Eigenschaften zu erhalten ist gemäß der US-PS 5 027 643 vorgesehen, die auf eine über der zum Verpressen des Metalls vorgesehene Temperatur erhitzten Blöcke durch geregelte und über die Blocklänge unterschiedliche Kühlung reproduzierbar mit einem Temperaturgradienten zu versehen, wozu der aus dem Ofen austretende Block auf seinem Weg zur Strangpresse in eine Kühlvorrichtung eingebracht wird, welche in einer Mehrzahl von axial hintereinander angeordneten Ringzonen mit Düsen zum Besprühen des Blockes mit einem Kühlmittel versehen ist und die Kühlintensität in den Ringzonen sowie die Relativbewegung eines Blockes gegenüber den Ringzonen regelbar ist. Die Beeinflussung der Kühlmittelmenge ist nur begrenzt möglich, denn ansonsten Temperaturunterschiede am Blockumfang auftreten.In order to obtain pressed products that are identical to one another and have properties that are the same over their length, US Pat. No. 5,027,643 provides that a temperature gradient is reproducibly provided on blocks heated above the temperature intended for pressing the metal by controlled cooling which varies over the block length , for which purpose the block emerging from the furnace is introduced on its way to the extrusion press into a cooling device which is provided in a plurality of ring zones arranged axially one behind the other with nozzles for spraying the block with a coolant, and the cooling intensity in the ring zones and the relative movement of a block is adjustable in relation to the ring zones. The amount of coolant can only be influenced to a limited extent, because otherwise temperature differences occur around the block circumference.
Die Erfindung geht von der den Oberbegriff des Patentanspruchs 1 bildenden Kühlvorrichtung nach der US-PS 5 027 643 aus. Zur Behebung des zuvor beschriebenen Nachteils des Auftretens von Temperaturunterschieden am Blockumfang wird erfindungsgemäß die Abschreckkammer der Kühlvorrichtung mit senkrechter Achse angeordnet.The invention is based on the cooling device forming the preamble of claim 1 according to US Pat. No. 5,027,643. In order to eliminate the above-described disadvantage of the occurrence of temperature differences on the circumference of the block, the quenching chamber of the cooling device is arranged with a vertical axis.
Eine baulich vorteilhafte Ausgestaltung der Anlage ergibt sich, wenn die Abschreckkammer mit senkrechter Achse über einem aus zwei sich in der senkrechten Achse der Abschreckkammer treffenden Blockkippern bestehenden Transportmittel für die Blöcke angeordnet ist und achsgleich hiermit ein den Block relativ zur Abschreckkammer bewegender Stößel heb- und senkbar angeordnet ist. Der die Hubbewegung des Stößels bewirkende Antrieb und damit die Hub- und Senkgeschwindigkeit des Stößels ist vorteilhafterweise regelbar.A structurally advantageous embodiment of the system is obtained if the quenching chamber with a vertical axis is arranged above a means of transport for the blocks consisting of two block dumpers that meet in the vertical axis of the quenching chamber, and with it a ram moving the block relative to the quenching chamber can be raised and lowered is arranged. The drive effecting the lifting movement of the plunger and thus the lifting and lowering speed of the plunger can advantageously be regulated.
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt, wobei die
- Fig. 1
- eine Strangpreßanlage in Aufsicht,
- Fig. 2
- einen Ausschnitt in größerem Maßstab in einer Seitenansicht teilweise im Schnitt, und in nochmals größerem Maßstab in
- Fig. 3
- einen horizontalen Schnitt nach der in Fig. 2 eingetragenen Schnittlinie III-III und in
- Fig. 4
- einen horizontalen Schnitt nach der in Fig. 2 eingetragenen Schnittlinie IV-IV zeigt.
- Fig. 5
- ist ein Schaubild der Temperaturverteilung im Block zum Zeitpunkt der soeben beendeten Kühlung.
- Fig. 1
- an extrusion system under supervision,
- Fig. 2
- a section on a larger scale in a side view partially in section, and in again larger scale in
- Fig. 3
- a horizontal section along the section line III-III entered in Fig. 2 and in
- Fig. 4
- a horizontal section along the line IV-IV shown in Fig. 2 shows.
- Fig. 5
- is a graph of the temperature distribution in the block at the time of cooling that has just ended.
Die in Fig. 1 dargestellte Strangpreßanlage besteht aus einer Strangpresse 1, einem Ofen 2, einer Warmhaltekammer 3, einem ersten Blockkipper 4, einer Abschreckkammer 5, einem zweiten Blockkipper 6, einem Hubbalkenförderer 7, einem Blocklader 8 und der Strangpresse 1 nachgeordnet einem Auslauf 9 mit den üblichen Folgeeinrichtungen für die weitere Behandlung der ausgepreßten Stränge.1 consists of an extruder 1, an
Wie die Fig. 2 in Einzelheiten zeigt ist der mit einer Spule 12 in horizontaler Anordnung versehene Induktionsofen 2 zur Aufnahme einer Mehrzahl von Blöcken 10a vorgesehen. Von einem nicht dargestellten Stößel werden die Blöcke 10 im Ofen 2 vorgeschoben. Dem Ofen 2 nachgeordnet ist eine Warmhaltekammer 3, in der der jeweils nächste zur Verpressung vorgesehene Block 10b, der im Ofen 2 auf eine zu seiner Verpressung geeignete Temperatur erhitzt worden ist, bevorratet wird. Die Warmhaltekammer 3 ist mit einer Spule 13 versehen um die Temperatur des Blocks 10b während der Verweilzeit in der Warmhaltekammer 3 halten zu können, wobei die Verweilzeit im übrigen zum Ausgleich der Temperatur des Blocks 10b genutzt wird.As FIG. 2 shows in detail, the
In zeitlicher Abstimmung zum nächsten Preßzyklus wird der Block 10b aus der Warmhaltekammer ausgestoßen und gelangt auf den Blockkipper 4 von dem der Block in eine senkrechte Position unterhalb und gleichachsig mit der Abschreckkammer 5 gekippt wird. Unter dem Block in dieser Position ist ein Stößel 11 gleichachsig zum Block und zur Abschreckkammer 5 angeordnet.In coordination with the next pressing cycle,
Der als Zahnstange ausgebildete Stößel 11 ist in einem Gehäuse 14 geführt. Mittels eines von einem drehzahlregelbaren Motor 16 angetriebenen Ritzel 15 ist der Stößel 11 in senkrechter Richtung beweglich in eine obere Stellung, in der der Block vom Blockkipper 4 abgehoben und bis in eine Stellung oberhalb der Abschreckkammer 5 angehoben ist, wo er von einem Korb 17 gehalten wird.The
In der Abschreckkammer 5 sind übereinander - im Ausführungsbeispiel fünf - Düsenringe 18 vorgesehen, die Kühlzonen bilden, wozu die Düsenringe 18 getrennt mit Kühlmittel versorgt werden, so daß die Kühlmittelmenge, der Kühlmitteldruck, die Kühlmitteltemperatur und die Kühldauer in jedem Düsenring 18, also in jeder Kühlzone für sich regelbar sind. Leisten 19, die sich durch die Kühlkammer 5 und den Korb 17 erstrecken, dienen zur Führung eines Blocks, während sich dieser in der Kühlkammer 5 bzw. im Korb 17 bewegt. Verdampfendes Kühlmittel wird durch ein Gebläse 20 aus einem die Kühlkammer 5 und den Korb 17 ummantelnden Gehäuse 21 abgesaugt. Sobald ein Block seine obere Position im Korb 17 erreicht hat, setzt die Beaufschlagung der Düsenringe 18 mit dem Kühlmittel ein, und der Block wird mit geregelter Geschwindigkeit mittels des Stößels 11 abgesenkt, bis er sich ganz in der Kühlkammer 5 befindet und das Kühlmittel abgeschaltet wird. Soll beispielsweise der Block im direkten Strangpreßverfahren ausgepreßt werden, so ist die Kühlung so geregelt, daß im Block beim Verlassen der Kühlkammer 5 eine Temperaturverteilung vorliegt, wie diese aus dem Schaubild Figur 5 ersichtlich ist. Das oben gelegene Blockende ist dabei ohne Beaufschlagung durch das Kühlmittel geblieben, während das untere Blockende über die gesamte Absenkzeit von 20 sec. mit dem in Menge, Druck und Temperatur geregelten Kühlmittel beaufschlagt war. Diese Temperaturverteilung ist so eingestellt, daß sich der Block isotherm mit optimaler Preßgeschwindigkeit auspressen läßt.In the
Sobald ein von Blockkipper 4 unter die Kühlkammer 5 verbrachter Block 10b vom Stößel 11 in den Bereich der Kühlkammer 5 und des Korbes 17 angehoben worden ist, wird der Blockkipper 4 in seine Ausgangsposition zurückgeschwenkt, wo er zur Aufnahme eines weiteren Blocks 10b bereitsteht. Unmittelbar folgend wird der Blockkipper 6 unter die Kühlkammer 5 eingeschwenkt, noch bevor der sich in der Kühlkammer 5 befindende Block vom Stößel 11 wieder abgesenkt wird, so daß der Blockkipper 6 den aus der Kühlkammer 5 austretenden Block übernehmen kann. Der Blockkipper 6 legt dann den Block auf einen Hubbalkenförderer 7 ab, der den Block dem Blocklader 7 zuführt, der dann den Block in die Strangpresse 1 lädt.As soon as a
Claims (4)
- An installation for applying a temperature profile to metal blocks for extrusion in metal-extrusion presses, the installation comprising a furnace (2) heated by electricity or gas, a chilling chamber (5) divided into a plurality of zones (18) of separately controllable cooling intensity, for regionally controlled chilling of evenly pre-heated metal blocks (10) with controlled movement of the metal block (10) relative to the zones (18), and means (4, 11, 6, 7) for transporting the metal blocks (10) from the furnace (2) to the chilling chamber (5) and on to the block-loading means (8) of the metal-extrusion press (1), characterized by an arrangement of the chilling chamber (5) with a vertical axis.
- An installation according to Claim 1, characterized in that the chilling chamber (5) is arranged with its vertical axis above a transport means for the blocks (10), the transport means comprising two block-tilting means (4, 6), and a push rod (11) displacing the block (10) relative to the chilling chamber (5) is arranged below the chilling chamber (5) coaxially therewith so as to be liftable and lowerable.
- An installation according to Claim 2, characterized in that the drive means (16) for the lifting movement of the push rod (11) - and hence the speed at which the push rod is lifted and lowered - is adjustable.
- An installation according to Claim 1, 2 or 3, characterized in that a cage (17) is arranged above the chilling chamber (5) and the push rod (11) is dimensioned in such a way that a block (10) can be raised above the chilling chamber (5) into the cage (17).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4305012 | 1993-02-18 | ||
| DE4305012 | 1993-02-18 | ||
| PCT/DE1994/000166 WO1994019124A1 (en) | 1993-02-18 | 1994-02-17 | Process and device for applying a temperature profile to metal blocks to be extruded |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0684881A1 EP0684881A1 (en) | 1995-12-06 |
| EP0684881B1 true EP0684881B1 (en) | 1996-12-11 |
Family
ID=6480799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94906877A Expired - Lifetime EP0684881B1 (en) | 1993-02-18 | 1994-02-17 | Process and device for applying a temperature profile to metal blocks to be extruded |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5802905A (en) |
| EP (1) | EP0684881B1 (en) |
| JP (1) | JPH08509660A (en) |
| AT (1) | ATE146105T1 (en) |
| DE (2) | DE59401270D1 (en) |
| NO (1) | NO953078L (en) |
| WO (1) | WO1994019124A1 (en) |
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|---|---|---|---|---|
| DE19946998B4 (en) * | 1999-09-30 | 2005-10-13 | Kramer, Carl, Prof. Dr.-Ing. | Apparatus for cooling a metallic billet or rod section |
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| EP0839589A1 (en) * | 1996-11-04 | 1998-05-06 | Alusuisse Technology & Management AG | Method for producing a metallic profiled strand |
| NO312446B1 (en) * | 1997-09-24 | 2002-05-13 | Mitsubishi Heavy Ind Ltd | Automatic plate bending system with high frequency induction heating |
| DE50005095D1 (en) * | 1999-09-10 | 2004-02-26 | Carl Kramer | METHOD FOR THE HEAT TREATMENT OF METAL PRESSING PINS |
| ITBS20040009A1 (en) * | 2004-01-22 | 2004-04-22 | Cometal Engineering S P A | PLANT FOR THE PRODUCTION OF EXTRUDED ALUMINUM PROFILES |
| CN101468365B (en) * | 2007-12-29 | 2011-03-30 | 富准精密工业(深圳)有限公司 | Wind-guiding device and workpiece-cooling device using the wind-guiding device |
| CN102500635B (en) * | 2011-10-11 | 2014-11-05 | 福建工程学院 | Magnesium alloy heating and forming process and magnesium alloy heating and feeding channel |
| WO2014094133A1 (en) * | 2012-12-21 | 2014-06-26 | Exco Technologies Limited | Extrusion press container and mantle for same |
| DE102019203157B4 (en) * | 2019-01-08 | 2020-07-23 | Sms Group Gmbh | Shell as a transport shoe for steel blocks to be heated inductively, method for the inductive heating of steel blocks using such a shell and device for carrying out the method |
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| FR1049675A (en) * | 1951-01-26 | 1953-12-31 | Schloemann Ag | Process for treating pressing material used in one or more parts for the manufacture of tubes or bars of any length in presses for profiling tubes and metal bars, in particular in presses for wrapping aluminum cables |
| DE1014678B (en) * | 1955-06-07 | 1957-08-29 | Bbc Brown Boveri & Cie | Continuous induction furnace for uneven heating of metal blocks in the direction of the longitudinal axis |
| US3173283A (en) * | 1960-12-27 | 1965-03-16 | Vogtmann Hans | Process and apparatus for loading extrusion presses |
| US4393917A (en) * | 1977-06-27 | 1983-07-19 | Western Electric Company, Inc. | Methods and apparatus for casting and extruding material |
| US4245818A (en) * | 1978-03-16 | 1981-01-20 | Prolizenz Aktiengesellschaft | Apparatus for heat treatment of material to be worked on, especially of aluminum or magnesium alloys |
| JPS5767134A (en) * | 1980-10-09 | 1982-04-23 | Nippon Steel Corp | Method and installation for continuous annealing method of cold-rolled steel strip |
| JPS57159214A (en) * | 1981-03-25 | 1982-10-01 | Sumitomo Metal Ind Ltd | Manufacture of pipe by hot extrusion |
| SE437675B (en) * | 1981-05-14 | 1985-03-11 | Asea Ab | REFRIGERANT BODY COOLING DEVICE |
| US4666665A (en) * | 1986-01-30 | 1987-05-19 | Federal-Mogul Corporation | Hot-forging small inner diameter powdered metal parts |
| US4758398A (en) * | 1986-10-07 | 1988-07-19 | The Dexter Corporation | Method of manufacture preforms |
| US5027634A (en) * | 1990-02-28 | 1991-07-02 | Granco-Clark, Inc. | Solutionizing taper quench |
| DE4024605A1 (en) * | 1990-08-02 | 1992-02-06 | Wsp Ingenieurgesellschaft Fuer | DEVICE FOR COOLING EXTRUSION PROFILES |
| US5359874A (en) * | 1991-11-12 | 1994-11-01 | Abb Power T & D Company, Inc. | Method and apparatus for production of continuous metal strip |
| US5197319A (en) * | 1991-12-05 | 1993-03-30 | Brazeway, Inc. | Extrusion apparatus for sheathing a temperature sensitive core material |
| EP0575646A1 (en) * | 1992-06-22 | 1993-12-29 | Aliteco Ag | A method and a device for forming various workpieces |
| US5306365A (en) * | 1992-11-19 | 1994-04-26 | Aluminum Company Of America | Apparatus and method for tapered heating of metal billet |
| US5325694A (en) * | 1993-03-15 | 1994-07-05 | Granco Clark, Inc. | Extrusion billet taper quenching system |
| JPH06277749A (en) * | 1993-03-26 | 1994-10-04 | Sumitomo Metal Ind Ltd | Hot extruding equipment |
| EP0672473A1 (en) * | 1994-03-15 | 1995-09-20 | Norsk Hydro A/S | Apparatus and process for the extrusion of profiles |
-
1994
- 1994-02-17 JP JP6518550A patent/JPH08509660A/en active Pending
- 1994-02-17 WO PCT/DE1994/000166 patent/WO1994019124A1/en active IP Right Grant
- 1994-02-17 DE DE59401270T patent/DE59401270D1/en not_active Expired - Fee Related
- 1994-02-17 EP EP94906877A patent/EP0684881B1/en not_active Expired - Lifetime
- 1994-02-17 US US08/525,541 patent/US5802905A/en not_active Expired - Fee Related
- 1994-02-17 DE DE4405027A patent/DE4405027A1/en not_active Withdrawn
- 1994-02-17 AT AT94906877T patent/ATE146105T1/en not_active IP Right Cessation
-
1995
- 1995-08-07 NO NO953078A patent/NO953078L/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19946998B4 (en) * | 1999-09-30 | 2005-10-13 | Kramer, Carl, Prof. Dr.-Ing. | Apparatus for cooling a metallic billet or rod section |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0684881A1 (en) | 1995-12-06 |
| JPH08509660A (en) | 1996-10-15 |
| ATE146105T1 (en) | 1996-12-15 |
| WO1994019124A1 (en) | 1994-09-01 |
| NO953078D0 (en) | 1995-08-07 |
| US5802905A (en) | 1998-09-08 |
| NO953078L (en) | 1995-08-07 |
| DE59401270D1 (en) | 1997-01-23 |
| DE4405027A1 (en) | 1994-11-10 |
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