EP1306145B1 - Method for thermal hydroforming - Google Patents
Method for thermal hydroforming Download PDFInfo
- Publication number
- EP1306145B1 EP1306145B1 EP02020724A EP02020724A EP1306145B1 EP 1306145 B1 EP1306145 B1 EP 1306145B1 EP 02020724 A EP02020724 A EP 02020724A EP 02020724 A EP02020724 A EP 02020724A EP 1306145 B1 EP1306145 B1 EP 1306145B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal plates
- forming method
- forming
- plates
- heated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/021—Deforming sheet bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/021—Deforming sheet bodies
- B21D26/031—Mould construction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/053—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure characterised by the material of the blanks
- B21D26/059—Layered blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
Definitions
- the invention relates to a thermal internal pressure forming process according to the preamble of claim 1.
- the object of the invention is so the method of the type mentioned to design that also conventional, prone to recrystallization under the influence of heat Materials, such as normal aluminum or titanium, on the production side simple way without unwanted structural changes in the temperature range close to the melting point for high-quality hollow components are internally formable.
- Shortening the heating and deformation phase is a nuisance Structural transformation of materials that are sensitive in this regard is prevented and in connection with the use of conventional, non-grain size stabilized instead of superplastic materials, a much cheaper one Component manufacturing with high degrees of forming ensured without the melting point of the sheet metal near the melting point is disadvantageous affects the material properties of the finished hollow component, with the further, Effect that is particularly significant for series production Due to the shorter cycle times, correspondingly higher production rates let achieve.
- the heating and deformation phase is limited to a period of about 5 minutes according to the invention.
- the invention preferably uses conventional aluminum sheets or the like made of a non-grain size stabilized aluminum alloy at one Temperature level of about 500 ° C deformed inside.
- the sheet metal plates according to the Insert into the mold on the way via an integrated in this Heater heats up, causing loss of time during heating the blanks are created outside the mold, avoided and on the other hand - unlike when heating the sheet metal plates with the help of a heated one Pressure medium - an exact, time-separate control of heating and Deformation process is made possible.
- the internal pressure deformation is expediently carried out with the aid of a gaseous one Pressure medium, in the simplest case air, under a pressure of normally 20 to 40 bar up to pressure values of approx. 250 bar, if z. B. sharp-edged corner areas are to be formed on the hollow components.
- a gaseous one Pressure medium in the simplest case air
- these are advantageously partially precoated with a release agent.
- the structural rigidity of the hollow components can be thereby increase in a technically simple manner that between the outer sheet metal plates arranged at least one inner plate of the same material and is welded to the edge of these, which is when the Outer boards to a stiffening plate passing through the hollow body deformed.
- the hollow component 1 which is closed in cross section, is initially two sheet metal blanks 2, 3 with a wall thickness of a few mm each from conventional, non-grain size stabilized aluminum or an aluminum alloy, which on their contact surfaces - with the exception of a narrow one Edge strip - with a silicon nitride, shown in dashed lines Release agent layer 4 are occupied, with the interposition of a pressure lance 5 placed in a mold designated 6 overall.
- Mold cavity 7 provided tool upper and lower part 8, 9, which on the Are each surrounded by a heat insulation layer 10 and by a heater 11 continuously at a near the melting point the metal plates 2, 3 lying temperature level of about 500 ° C. being held.
- To monitor the temperature level are in the area the mold cavity 7 and in the edge region of the sheet metal plates 2, 3 each temperature sensors 12 arranged.
- the tool parts 8, 9 are moved together and the sheet metal plates 2, 3 under the pressure effect of the tool parts 8, 9 and the simultaneous, near melting point heating on their Release agent-free edge zones are pressure-welded to one another, while a Melt bond on the other contact surfaces due to the release agent coating 4 is prevented.
- Print medium e.g. B. compressed air
- the pressure level of the print medium is usually between 20 and 40 bar, but can vary depending on the degree of deformation and cross-sectional geometry of the hollow component 1 up to 250 bar be raised.
- the shaping tool 6 is opened and the hollow body 1 removed, whereupon the pressure lance 5 separated, the resulting Hollow body opening closed and a new production cycle started can be. It is essential that the time between heating up the metal plates 2, 3 and the removal of the hollow body 1 so short is dimensioned that a structural transformation of the sheet metal plates 2, 3 is omitted. This period of time is conventional, non-size stabilized Aluminum boards on the order of a few, namely about 5 Minutes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
Die Erfindung bezieht sich auf ein thermisches Innendruck-Umformverfahren nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a thermal internal pressure forming process according to the preamble of claim 1.
Aus der DE 195 31 035 C2 ist ein Verfahren dieser Art zur Innendruckumformung von randseitig miteinander verschweißten Blech- und insbesondere Aluminiumplatinen bekannt, bei dem die Blechplatinen entweder außerhalb des Formwerkzeugs oder in diesem selbst durch Vor- oder Aufheizen der Form oder des Druckmediums auf ein erhöhtes Temperaturniveau erwärmt und in diesem Zustand umgeformt werden, um auf diese Weise mit relativ niedrigen Drücken hohe Umformgrade zu erzielen. Dabei ergeben sich jedoch bei Werkstoffen wie Titan oder eben auch Aluminium, die in der Kraft- und Luftfahrzeugindustrie zunehmend häufiger zum Einsatz kommen, höchst unerwünschte Gefügeumwandlungen mit Rekristallisations- und Versprödungseffekten, wenn nicht auf korngrößenstabilisierte, superplastische Sonderwerkstoffe zurückgegriffen wird, die sehr kostspielig und zumindest für eine Serienfertigung nicht akzeptabel sind.DE 195 31 035 C2 describes a method of this type for internal pressure forming of sheet metal and especially welded together at the edge Aluminum boards known, in which the sheet metal boards either outside of Mold tool or in this itself by preheating or heating the mold or the print medium is heated to an elevated temperature level and in This condition can be reshaped to be relatively low in this way Press to achieve high degrees of deformation. However, this results in materials like titanium or aluminum, used in the automotive and aircraft industries increasingly used, highly undesirable Structural transformations with recrystallization and embrittlement effects, if do not use grain size stabilized, superplastic special materials that is very expensive and at least not for series production are acceptable.
Aufgabe der Erfindung ist es, das Verfahren der eingangs genannten Art so auszugestalten, dass auch konventionelle, unter Wärmeeinwirkung rekristallisationsanfällige Werkstoffe, wie normales Aluminium oder Titan, auf fertigungstechnisch einfache Weise ohne unerwünschte Gefügeumwandlungen im schmelzpunktnahen Temperaturbereich zu qualitativ hochwertigen Hohlbauteilen innendruckumformbar sind. The object of the invention is so the method of the type mentioned to design that also conventional, prone to recrystallization under the influence of heat Materials, such as normal aluminum or titanium, on the production side simple way without unwanted structural changes in the temperature range close to the melting point for high-quality hollow components are internally formable.
Diese Aufgabe wird erfindungsgemäß durch das im Patentanspruch 1 angegebene Verfahren gelöst.This object is achieved by the one specified in claim 1 Procedure solved.
Erfindungsgemäß wird durch eine gegenüber den bekannten Verfahren wesentliche Verkürzung der Erwärmungs- und Verformungsphase eine störende Gefügeumwandlung an in dieser Hinsicht empfindlichen Materialien unterbunden und in Verbindung mit der Verwendung konventioneller, nicht-korngrößenstabilisierter anstelle von superplastischen Werkstoffen eine erheblich kostengünstigere Bauteilfertigung mit hohen Umformgraden sichergestellt, ohne dass sich der schmelzpunktnahe Erwärmungszustand der Blechplatinen nachteilig auf die Materialeigenschaften des fertigen Hohlbauteils auswirkt, mit dem weiteren, insbesondere für eine Serienfertigung bedeutsamen Effekt, dass sich aufgrund der verkürzten Taktzeiten zugleich auch entsprechend erhöhte Produktionsraten erzielen lassen.According to the invention is essential compared to the known methods Shortening the heating and deformation phase is a nuisance Structural transformation of materials that are sensitive in this regard is prevented and in connection with the use of conventional, non-grain size stabilized instead of superplastic materials, a much cheaper one Component manufacturing with high degrees of forming ensured without the melting point of the sheet metal near the melting point is disadvantageous affects the material properties of the finished hollow component, with the further, Effect that is particularly significant for series production Due to the shorter cycle times, correspondingly higher production rates let achieve.
Die Erwärmungs- und Verformungsphase wird nach der Erfindung auf einen Zeitraum von etwa 5 Minuten begrenzt. Im Rahmen der Erfindung werden vorzugsweise konventionelle Aluminiumbleche oder solche aus einer nicht-korngrößenstabilisierten Aluminiumlegierung bei einem Temperaturniveau von etwa 500 °C innendruckverformt. In weiterer, besonders bevorzugter Ausgestaltung der Erfindung werden die Blechplatinen nach dem Einlegen in das Formwerkzeug auf dem Wege über eine in dieses integrierte Heizeinrichtung erwärmt, wodurch einerseits Zeitverluste, die beim Aufheizen der Platinen außerhalb des Formwerkzeugs entstehen, vermieden werden und andererseits - anders als beim Erwärmen der Blechplatinen mit Hilfe eines erhitzten Druckmediums - eine exakte, zeitlich getrennte Steuerung von Aufheizund Verformungsvorgang ermöglicht wird.The heating and deformation phase is limited to a period of about 5 minutes according to the invention. As part of The invention preferably uses conventional aluminum sheets or the like made of a non-grain size stabilized aluminum alloy at one Temperature level of about 500 ° C deformed inside. In another, especially preferred embodiment of the invention, the sheet metal plates according to the Insert into the mold on the way via an integrated in this Heater heats up, causing loss of time during heating the blanks are created outside the mold, avoided and on the other hand - unlike when heating the sheet metal plates with the help of a heated one Pressure medium - an exact, time-separate control of heating and Deformation process is made possible.
Die Innendruckverformung erfolgt zweckmäßigerweise mit Hilfe eines gasförmigen Druckmediums, im einfachsten Fall Luft, unter einem Druck von normalerweise 20 bis 40 bar bis hin zu Druckwerten von ca. 250 bar, falls z. B. scharfkantige Eckbereiche an den Hohlbauteilen ausgeformt werden sollen. Um sicherzustellen, dass die Blechplatinen unter der Wärmeeinwirkung nicht an ihren an die Schweißnaht angrenzenden Kontaktflächen zusammenschmelzen, werden diese zweckmäßigerweise mit einem Trennmittel partiell vorbeschichtet. Die konstruktive Steifigkeit der Hohlbauteile schließlich lässt sich dadurch auf fertigungstechnisch einfache Weise erhöhen, dass zwischen den äußeren Blechplatinen zumindest eine werkstoffgleiche Innenplatine angeordnet und randseitig mit diesen verschweißt wird, welche sich beim Aufweiten der Außenplatinen zu einem den Hohlkörper durchsetzenden Versteifungsblech verformt.The internal pressure deformation is expediently carried out with the aid of a gaseous one Pressure medium, in the simplest case air, under a pressure of normally 20 to 40 bar up to pressure values of approx. 250 bar, if z. B. sharp-edged corner areas are to be formed on the hollow components. To ensure that the sheet metal boards are not under the influence of heat melt together at their contact surfaces adjacent to the weld seam, these are advantageously partially precoated with a release agent. Finally, the structural rigidity of the hollow components can be thereby increase in a technically simple manner that between the outer sheet metal plates arranged at least one inner plate of the same material and is welded to the edge of these, which is when the Outer boards to a stiffening plate passing through the hollow body deformed.
Die Erfindung wird nunmehr anhand zweier Ausführungsbeispiele in Verbindung mit den Zeichnungen näher erläutert. Diese zeigen in stark schematisierter Darstellung in
- Fig. 1a, b
- zwei aufeinanderfolgende Fertigungsstufen eines Hohlbauteils a.) nach dem Einlegen der Blechplatinen in das Formwerkzeug und b.) nach Beendigung des Umformprozesses; und
- Fig. 2a, b, c
- den Fertigungsablauf für ein modifiziertes, innenblechversteiftes Hohlbauteil a.) vor Beginn, b.) in einer Zwischenstufe und c.) nach Beendigung des Umformvorgangs.
- 1a, b
- two successive manufacturing stages of a hollow component a.) after inserting the sheet metal blanks into the mold and b.) after the forming process has ended; and
- 2a, b, c
- the production process for a modified, inner sheet reinforced hollow component a.) before the start, b.) in an intermediate stage and c.) after the forming process has ended.
Bei dem anhand der Fig. 1 erläuterten Umformverfahren zur Herstellung eines
im Querschnitt geschlossenen Hohlbauteils 1 werden zunächst zwei Blechplatinen
2, 3 mit einer Wandstärke von jeweils einigen mm aus konventionellem,
nicht-korngrößenstabilisierten Aluminium oder einer ebensolchen Aluminiumlegierung,
welche an ihren Kontaktflächen - mit Ausnahme eines schmalen
Randstreifens - mit einer siliziumnitridhaltigen, gestrichelt dargestellten
Trennmittelschicht 4 belegt sind, unter Zwischenschaltung einer Drucklanze 5
in ein insgesamt mit 6 bezeichnetes Formwerkzeug eingelegt. Dieses besteht
aus einem mit einer der Außenkontur des Hohlbauteils 1 entsprechenden
Formkavität 7 versehenen Werkzeugober- und -unterteil 8, 9, welche auf der
Außenseite jeweils von einer Wärmeisolationsschicht 10 umschlossen sind und
durch eine Heizeinrichtung 11 kontinuierlich auf einem nahe dem Schmelzpunkt
der Blechplatinen 2, 3 liegenden Temperaturniveau von etwa 500 °C
gehalten werden. Zur Überwachung des Temperaturniveaus sind im Bereich
der Formkavität 7 und im Randbereich der Blechplatinen 2, 3 jeweils Temperatursensoren
12 angeordnet.In the forming process explained with reference to FIG. 1 for producing a
The hollow component 1, which is closed in cross section, is initially two
Nach dem Einlegen der Blechplatinen 2, 3 werden die Werkzeugteile 8, 9 zusammengefahren
und die Blechplatinen 2, 3 unter der Druckwirkung der Werkzeugteile
8, 9 und der gleichzeitigen, schmelzpunktnahen Erwärmung an ihren
trennmittelfreien Randzonen miteinander preßverschweißt, während eine
Schmelzbindung an den übrigen Kontaktflächen infolge der Trennmittelbeschichtung
4 unterbunden wird.After inserting the
Anschließend werden die Blechplatinen 2, 3 über die Drucklanze 5 mit einem
Druckmedium, z. B. Druckluft, innendruckbeaufschlagt und dadurch bis zur
Anlage an der Formkavität 7 des Formwerkzeugs 6 aufgeweitet, so dass der in
Fig. 1b gezeigte Hohlkörper 1 entsteht. Das Druckniveau des Druckmediums
liegt dabei normalerweise zwischen 20 und 40 bar, kann jedoch je nach Verformungsgrad
und Querschnittsgeometrie des Hohlbauteils 1 bis zu 250 bar
angehoben werden.Then the
Nach Beendigung des Umformvorgangs wird das Formwerkzeug 6 geöffnet und
der Hohlkörper 1 entnommen, woraufhin die Drucklanze 5 abgetrennt, die entstehende
Hohlkörperöffnung verschlossen und ein neuer Fertigungszyklus begonnen
werden kann. Wesentlich ist, dass die Zeitspanne zwischen dem Aufheizen
der Blechplatinen 2, 3 und der Entnahme des Hohlkörpers 1 so kurz
bemessen wird, dass eine Gefügeumwandlung der Blechplatinen 2, 3 unterbleibt.
Diese Zeitspanne liegt bei konventionellen, nicht-komgrößenstabilisierten
Aluminiumplatinen in der Größenordnung von wenigen, nämlich etwa 5
Minuten.After the shaping process has ended, the
Die Ausführungsform nach Fig. 2, wo die dem ersten Ausführungsbeispiel entsprechenden
Komponenten durch ein um 100 erhöhtes Bezugszeichen gekennzeichnet
sind, unterscheidet sich von diesem in erster Linie durch einen
anders aufgebauten Platinenverbund, welcher hier aus z. B. durch Laserstrahlnähte
13, 14 randseitig miteinander vorverschweißten Außen- und kleineren,
von Durchlassöffnungen 15 durchsetzten Innenplatinen 102, 103 bzw. 16, 17
wiederum aus konventionellem, nicht-korngrößenstabilisierten Aluminium oder
einer gleichartigen Aluminiumlegierung besteht. Aus Fig. 2b ist ersichtlich, wie
die Außenplatinen 102, 103 unter der Innendruckwirkung und der gleichzeitigen,
schmelzpunktnahen Erwärmung ballonartig aufgeweitet und zugleich die
Innenplatinen 16, 17 gestreckt werden, bis am Ende des thermischen Umformprozesses
(Fig. 2c) ein im Querschnitt geschlossenes Hohlbauteil 101 mit
scharfkantigen Eckbereichen und durch die Innenplatinen 16, 17 gebildeten,
parallel zur Verbindungsnaht 13 der Außenplatinen 102, 103 verlaufenden
Versteifungsblechen entsteht. Aufgrund der rechteckförmigen Querschnittsgeometrie
des Hohlbauteils 101 muss in diesem Fall mit wesentlich höheren Innendrücken
in der Größenordnung von 200 bar gearbeitet werden. Im Übrigen
ist die Verfahrensweise sowohl hinsichtlich der formwerkzeugseitigen Aufheizung
als auch hinsichtlich der auf wenige Minuten begrenzten Zeitspanne zwischen
dem Einlegen des Platinenverbunds und dem Entformen des Hohlbauteils
101 die gleiche wie bei dem ersten Ausführungsbeispiel.The embodiment of Fig. 2, where the corresponding to the first embodiment
Components identified by a reference numeral increased by 100
differs from this primarily by one
differently constructed board assembly, which here from z. B. by
Claims (6)
- Thermal internal pressure forming method, in which metal plates welded together at the edges are heated in a forming tool to close to the melting temperature of the metal plates and, in the heated state, are expanded to form a hollow body, by introduction of a pressure medium between the plates until they contact the forming cavity of the forming tool and are then removed from the forming tool,
characterised in that the metal plates consist of a non-grain-size-stabilised material and a short time span of about 5 minutes which is below the time required for structural change in the non-grain-size-stabilised material at heating temperature is adhered to for the heating and internal high pressure forming phase of the metal plates. - Forming method according to claim 1, characterised in that the non-grain-size-stabilised metal plates comprises aluminium or an aluminium alloy and are heated to a temperature of about 500°C.
- Forming method according to any one of the preceding claims, characterised in that,
after being placed in the forming tool, the metal plates are heated via a heating device integrated therein. - Forming method according to any one of the preceding claims, characterised in that
the metal plates are formed by compressed gas at an internal pressure of a maximum of 250 bar. - Forming method according to any one of the preceding claims, characterised in that
the metal plates are coated with a release agent on their contact faces adjacent to the weld seam. - Forming method according to any one of the preceding claims, characterised in that
at least one further metal plate which is welded at the edges to the external plates and, after the expansion of the external plates, forms an internal sheet penetrating the hollow body is inserted between the external metal plates.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10153139 | 2001-10-27 | ||
| DE10153139A DE10153139A1 (en) | 2001-10-27 | 2001-10-27 | Thermal internal pressure forming process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1306145A1 EP1306145A1 (en) | 2003-05-02 |
| EP1306145B1 true EP1306145B1 (en) | 2004-09-01 |
Family
ID=7703966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02020724A Expired - Lifetime EP1306145B1 (en) | 2001-10-27 | 2002-09-14 | Method for thermal hydroforming |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1306145B1 (en) |
| DE (2) | DE10153139A1 (en) |
| ES (1) | ES2225707T3 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006058988A1 (en) * | 2006-12-14 | 2008-06-26 | Elringklinger Ag | Shielding component, in particular heat shield |
| DE102006058989A1 (en) * | 2006-12-14 | 2008-06-19 | Elringklinger Ag | Shielding component, in particular heat shield |
| DE102008045441B3 (en) * | 2008-09-02 | 2010-02-18 | Otto Fuchs Kg | Producing extrusion profile section calibrated with respect to its outer contour and made of hardenable aluminum alloy, by subjecting profile section to solution-annealing, and cooling the solution-annealed section at ambient temperature |
| CN102284587A (en) * | 2011-04-21 | 2011-12-21 | 上海板换机械设备有限公司 | Heat radiating plate pair expansion forming process |
| CN102873166B (en) * | 2012-10-19 | 2014-12-24 | 上海桦厦实业有限公司 | Aircraft spherical shell isothermal forming method and device |
| CN103567271A (en) * | 2013-10-11 | 2014-02-12 | 中航飞机股份有限公司西安飞机分公司 | Inflating thermal-expansion forming method for titanium alloy panel |
| CZ307213B6 (en) | 2016-09-19 | 2018-03-28 | Západočeská Univerzita V Plzni | A method of production of hollow bodies and a device for implementing this method |
| FR3125974A1 (en) | 2021-08-05 | 2023-02-10 | Airbus Operations | Method and device for manufacturing a part from a plate of deformable material, in particular for an edge of an aircraft element. |
| FR3125975A1 (en) * | 2021-08-05 | 2023-02-10 | Airbus Operations | Method and device for manufacturing a part from a cushion of deformable material, in particular for an edge of an aircraft element. |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2361215A1 (en) * | 1973-12-08 | 1975-06-12 | Volkswagenwerk Ag | Closed container made from two sheet metal plates - which are simultaneously formed on single press tool |
| DE19531035C2 (en) * | 1995-08-23 | 1998-10-15 | Alcan Gmbh | Process for the production of hollow bodies made of aluminum or aluminum alloys |
| DE19946290B4 (en) * | 1999-09-27 | 2006-07-06 | Vaw Aluminium Ag | Method for producing a fuel tank for motor vehicles |
-
2001
- 2001-10-27 DE DE10153139A patent/DE10153139A1/en not_active Withdrawn
-
2002
- 2002-09-14 EP EP02020724A patent/EP1306145B1/en not_active Expired - Lifetime
- 2002-09-14 ES ES02020724T patent/ES2225707T3/en not_active Expired - Lifetime
- 2002-09-14 DE DE50200917T patent/DE50200917D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1306145A1 (en) | 2003-05-02 |
| DE10153139A1 (en) | 2003-05-08 |
| ES2225707T3 (en) | 2005-03-16 |
| DE50200917D1 (en) | 2004-10-07 |
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