WO2008003694A1 - Method and apparatus for producing components by extrusion and components produced thereby - Google Patents

Method and apparatus for producing components by extrusion and components produced thereby Download PDF

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Publication number
WO2008003694A1
WO2008003694A1 PCT/EP2007/056671 EP2007056671W WO2008003694A1 WO 2008003694 A1 WO2008003694 A1 WO 2008003694A1 EP 2007056671 W EP2007056671 W EP 2007056671W WO 2008003694 A1 WO2008003694 A1 WO 2008003694A1
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WO
WIPO (PCT)
Prior art keywords
component
extrusion
produced
components
extrusion die
Prior art date
Application number
PCT/EP2007/056671
Other languages
French (fr)
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WO2008003694B1 (en
Inventor
Rainer Kocik
Original Assignee
Airbus Deutschland Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102007002516A external-priority patent/DE102007002516A1/en
Application filed by Airbus Deutschland Gmbh filed Critical Airbus Deutschland Gmbh
Publication of WO2008003694A1 publication Critical patent/WO2008003694A1/en
Publication of WO2008003694B1 publication Critical patent/WO2008003694B1/en

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Classifications

    • 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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/22—Making metal-coated products; Making products from two or more metals
    • B21C23/24—Covering indefinite lengths of metal or non-metal material with a metal coating

Definitions

  • the invention relates to a method and an apparatus for producing components for aerospace by extrusion, and to components produced by the method.
  • Components made to extend in a longitudinal direction can be advantageously produced by extrusion.
  • This allows materials with different properties to be combined with one another in an advantageous way, in order to optimize weight, strength, vibrational behaviour, corrosion or wear properties or the like and/or achieve lower production costs.
  • This is also of significance in particular in aerospace.
  • parts made of different materials that are to be combined with one another to form a common component are respectively produced individually and then connected to one another for example by soldering or welding.
  • the steel strips are kept wound up on coilers and are fed to the extrusion die from the side and directed in it by 90° into the direction of extrusion; in the case of the method known from DE 30 17 106 Al, on the other hand, the steel strips are fed to the extrusion die linearly in the direction of extrusion, while the extrusion punch is offset by 90° with respect to the direction of extrusion and is arranged at the side.
  • An object of the invention is to provide an improved method and apparatus for producing components for aerospace by extrusion, with which components made to extend in a longitudinal direction are joined at a joining surface running along the longitudinal direction.
  • the invention provides a method for producing joined-together components by extrusion, in particular for aerospace, with which a first, longitudinally extended component is produced by extrusion by means of an extrusion die and is connected to an already produced second component at a connecting surface running in the longitudinal direction of the first component, the first and second components being integrally connected to each other during the extrusion, thereby forming the joined- together component.
  • the outline of the first component is formed partly by the extrusion die and is otherwise made up by the connecting surface of the second component, the second component being formed as a solid profile and moved along during the extrusion of the first component parallel to the direction of extrusion in the direction of the extruded first component, and guided in such a way that it cannot evade the pressure generated in the die during the extrusion.
  • the extrusion die only partly surrounds the first component and the part of the first component that is not surrounded by the extrusion die forms the connecting surface with the second component.
  • the second component may also be guided parallel to the direction of extrusion through the extrusion die.
  • the components are produced from the same material.
  • the components are produced from different materials .
  • the components are produced from metallic materials.
  • the components are produced from different materials, the components are produced from aluminium or from titanium.
  • the components are produced from different materials
  • the components are produced from aluminium and from steel.
  • the components are produced from different materials, the components are produced from magnesium and from titanium.
  • the components are produced from different materials, the components are produced from magnesium and from steel.
  • the components are produced from non-metallic materials .
  • one of the components is produced from a metallic material and one of the components is produced from a non-metallic material.
  • the components are additionally positively connected during the extrusion.
  • the components may be positively connected to each other by part of one component being pressed into a recess of the other component during the extrusion.
  • the recess may be formed by a groove extending in the longitudinal direction of the components.
  • the recess may be formed by a serration.
  • the joined-together component is produced linearly in the extrusion.
  • the joined-together component is produced with a curvature in the extrusion.
  • the invention provides an apparatus for producing joined-together components by extrusion, comprising an extrusion die for producing a first, longitudinally extended component by extrusion, and for connecting the first component to an already produced second component at a connecting surface extending in the longitudinal direction of the first component.
  • the extrusion die is intended for forming part of the outline of the first component, which is otherwise made up by the second component, and the extrusion die is intended for moving the second component along in the direction of extrusion, the second component being formed as a solid profile and guided in such a way with respect to the extrusion die that it cannot evade the pressure generated in the die during the extrusion.
  • the extrusion die only partly surrounds the first component and the part of the first component that is not surrounded by the extrusion die forms the connecting surface with the second component.
  • the apparatus is formed in such a way that the second component is guided parallel to the direction of extrusion through the extrusion die . Furthermore, the invention provides a joined-together component for aerospace that is produced by the method according to the invention.
  • the joined-together component may form a floor grid or seat rail structure.
  • the floor grid or seat rail structure is a component that has high wear and corrosion resistance connected to a component that has high strength with low weight.
  • the joined-together component according to the invention forms an interface structure for joining skin panels produced in a composite type of construction to a metallic support structure.
  • the interface structure may comprise a component which is produced from a metal having high corrosion resistance and serves for joining the skin panels produced in a composite type of construction and a component which is produced from a metal that is galvanically compatible with the metallic support structure.
  • the component may be linear.
  • the component may be curved.
  • Figure 1 shows a schematized side view of a method and an apparatus for producing joined-together components by extrusion according to an exemplary embodiment of the invention
  • Figure 2 shows an enlarged, partial cross-sectional view of Figure 1;
  • Figure 3 shows a perspective view of a joined-together component produced according to a further exemplary embodiment of the invention.
  • Figure 4 shows a perspective view of a joined-together component produced according to yet a further exemplary embodiment of the invention.
  • FIG. 1 Represented in Figure 1 is an extrusion die 3, with which a first component 1 is produced by extrusion.
  • the first component 1 is made to extend longitudinally in the direction of extrusion.
  • the material from which the first component 1 is produced by extrusion may for example be a metal.
  • the first component 1 has in cross section an outline 5 at which the first component 1 is partly surrounded by the extrusion die 3.
  • the first component 1 On the part not surrounded by the extrusion die 3, the first component 1 has a connecting surface 4 with a second component 2.
  • This second component 2 is an already produced component in the form of a solid profile, in particular a solid rail-like profile, with which the first component 1 is integrally connected during its production by extrusion, thereby forming a joined-together component 1, 2 or composite component. This is to be referred to here as coextrusion.
  • the outline 5 of the first component 1 is formed partly, that is to say to the extent to which the first component 1 is surrounded at its outline 5 by the extrusion die 3, by the extrusion die 3, and is otherwise, that is to say to the extent to which the first component 1 is not surrounded at its outline 5 by the extrusion die 3, made up by the connecting surface 4 with the second component 2.
  • the second component 2 therefore serves as part of the die for the extrusion of the first component 1.
  • the solid second component 2 is moved along parallel to the direction of extrusion, which is represented in Figure 1 by an arrow, that is to say substantially also in the longitudinal direction of the first component 1, in the direction of the extruded first component 1.
  • the considerable pressure produced in the extrusion die 3 in the extrusion of the first component 1 has the effect that the first component 1 and the second component 2 are intimately connected to each other and joined at the connecting surface 4 by diffusion processes and/or mechanical interlocking, so that the joined-together component 1, 2 or composite component is formed.
  • the second component 2 is guided with respect to the extrusion die 3 in such a way that it cannot evade the pressure produced in the die 3 during the extrusion.
  • the solid, second component 2 may in particular also be guided parallel to the direction of extrusion through the extrusion die 3, the outline 5 of the first component 1, as already mentioned above, being formed partly, that is to say to the extent to which the first component 1 is surrounded at its outline 5 by the extrusion die 3, by the extrusion die 3 itself, and being otherwise, that is to say to the extent to which the first component 1 is not surrounded at its outline 5 by the extrusion die 3, made up by the second component 2 or by the connecting surface 4 with the second component 2.
  • the second component 2 therefore serves as part of the die for the extrusion of the first component 1.
  • the individual components 1, 2 forming the joined-together component 1, 2 may be produced from the same material or from different materials.
  • the individual components 1, 2 may be produced in particular from metallic materials.
  • the components 1, 2 are produced from different metallic materials, it is possible for example for one to be produced from aluminium or an aluminium alloy and the other to be produced from titanium or a titanium alloy. This allows the good corrosion or wear properties of titanium to be combined with the low weight and relatively low price of aluminium.
  • the good wear properties of steel can be combined with the low weight of aluminium.
  • Figures 3 and 4 show exemplary embodiments in which the components 1, 2 are additionally positively connected to each other during the extrusion.
  • the components 1, 2 may be positively connected to each other by part Ia; Ib of one component, in the case of the embodiments represented here the first component 1, being pressed into a recess 2a; 2b of the other component, in the case of the embodiments represented here the second component 2, during the extrusion.
  • the recess 2a of the component into which the part Ia of one component is pressed during the extrusion may be formed by a groove extending in the longitudinal direction of the components 1, 2 or of the joined-together component 1 , 2.
  • the recess 2b of the component into which the part Ib of the one component is pressed during the extrusion is formed by a serration.
  • the joined-together component 1, 2 may be produced linearly in the extrusion, but it may also be provided that the joined- together component 1, 2 is produced with a curvature in the extrusion, corresponding to the form of the solid second component 2 that is used.
  • the joined-together or composite component 1, 2 may be used for various purposes for the production of structures and components in aerospace.
  • the joined-together component 1, 2 may form a floor grid or seat rail structure, in which a component having a high wear and corrosion resistance is connected to a component having high strength with low weight.
  • the joined-together component 1, 2 may form an interface structure for joining skin panels produced in a composite type of construction, i.e. from fibre-reinforced plastics and metal layers, to a metallic support structure, in particular of aluminium or aluminium alloy.
  • a metallic support structure in particular of aluminium or aluminium alloy.
  • the interface structure may comprise a component which is produced from a first metal having high corrosion resistance, for example from titanium or a titanium alloy, and serves for joining the skin panels produced in a composite type of construction and a component which is produced from a second metal that is galvanically compatible with the metallic support structure, for example from aluminium or an aluminium alloy.
  • the method and apparatus according to the invention and the joined-together component produced according to the invention have major advantages.
  • the number of process steps in the case of the coextrusion according to the invention is reduced in comparison with the conventional production with separate extrusion and subsequent joining, and consequently lower-cost production is possible at a higher production rate.
  • Materials with different properties may be combined with one another in an advantageous way, in order to optimize weight, strength, vibrational behaviour, corrosion or wear properties or the like and/or achieve lower production costs.
  • materials which otherwise cannot be connected to one another, or only with difficulty such as high-strength, non-weldable aluminium alloys with titanium, magnesium or steel alloys.
  • great process reliability is ensured along with consistent and reproducible quality of the connection.
  • the advantages in terms of weight, strength, vibrational behaviour, corrosion or wear properties and costs come into effect in particular in the case of components that are intended for aerospace .

Abstract

A description is given of a method and an apparatus for producing joined- together or composite components for aerospace by extrusion. A first, longitudinalIy-extended component (1) is produced by extrusion by means of an extrusion die (3) and connected to an already produced second component (2) at a connecting surface (4) running in the longitudinal direction. During the extrusion of the first component (1), the second component (2) is moved along in the direction of the extruded first component (1) and the outline (5) of the first component (1) is formed partly by the extrusion die (3) and is otherwise made up by the connecting surface (4), the first and second components (1, 2) being integrally connected to each other, thereby forming the joined-together component (1, 2), and the second component (2) being formed as a solid profile and guided in such a way that it cannot evade the pressure generated in the die (3) during the extrusion.

Description

Method and apparatus for producing components for aerospace by extrusion, and components produced by the method
The invention relates to a method and an apparatus for producing components for aerospace by extrusion, and to components produced by the method.
Components made to extend in a longitudinal direction can be advantageously produced by extrusion. In the case of many applications, there is the desire to produce such components from parts that are connected to one another along a connecting surface running in the longitudinal direction. This allows materials with different properties to be combined with one another in an advantageous way, in order to optimize weight, strength, vibrational behaviour, corrosion or wear properties or the like and/or achieve lower production costs. This is also of significance in particular in aerospace. Conventionally, parts made of different materials that are to be combined with one another to form a common component are respectively produced individually and then connected to one another for example by soldering or welding.
It is known from the publication "Teilprojekt A2 : Verbundstrangpressen" [Subproject A2 : composite extrusion] Transregio 10 News 1/06, to process a number of materials by extrusion to form a composite. In this case, two blocks of material and reinforcing elements, for example in the form of wires, are simultaneously fed to an extrusion die and pressed together, in order for example to produce solid profiles of a rectangular cross section or round tubes that have integrated reinforcements .
The conference report "Verbundstrangpressen, ein verfahren zur Herstellung metallisch gebundener Strangpressprofile aus Aluminium und Stahl" [Composite extrusion, a method for producing metallically bonded extrusion profiles of aluminium and steel", conference on new methods of massive forming, symposium of the DGU, Bad Nauheim, 1983 and DE 30 17 106 Al describe methods by which steel strips are introduced in pairs centrally into an extrusion die surrounding them on all sides and, with material being applied by extrusion on both sides of the strips, double profiles are formed, and these are then separated into two parts. In the case of the method known from the first-cited literature reference, the steel strips are kept wound up on coilers and are fed to the extrusion die from the side and directed in it by 90° into the direction of extrusion; in the case of the method known from DE 30 17 106 Al, on the other hand, the steel strips are fed to the extrusion die linearly in the direction of extrusion, while the extrusion punch is offset by 90° with respect to the direction of extrusion and is arranged at the side.
Finally, a composite extrusion method for producing aluminium profiles is known from DE 30 38 824 Al, which is regarded here as the closest prior art. In the case of the known method, a flexible material in strip form (steel strip) is fed to the extrusion die from the side and in said die is deflected on a deflecting roller by almost 90° into the direction of extrusion, running laterally on the extruded strand, in order to produce on the extruded part (aluminium) a base onto which further steel can be welded.
An object of the invention is to provide an improved method and apparatus for producing components for aerospace by extrusion, with which components made to extend in a longitudinal direction are joined at a joining surface running along the longitudinal direction.
The object is achieved by a method with the features of Claim 1.
Furthermore, the object is achieved by an apparatus with the features of Claim 18. A component produced by the method is the subject of the invention according to Claim 20.
Advantageous developments are specified in the respective subclaims .
The invention provides a method for producing joined-together components by extrusion, in particular for aerospace, with which a first, longitudinally extended component is produced by extrusion by means of an extrusion die and is connected to an already produced second component at a connecting surface running in the longitudinal direction of the first component, the first and second components being integrally connected to each other during the extrusion, thereby forming the joined- together component. According to the invention, it is provided that the outline of the first component is formed partly by the extrusion die and is otherwise made up by the connecting surface of the second component, the second component being formed as a solid profile and moved along during the extrusion of the first component parallel to the direction of extrusion in the direction of the extruded first component, and guided in such a way that it cannot evade the pressure generated in the die during the extrusion.
It may be provided that the extrusion die only partly surrounds the first component and the part of the first component that is not surrounded by the extrusion die forms the connecting surface with the second component.
The second component may also be guided parallel to the direction of extrusion through the extrusion die.
According to one embodiment of the method according to the invention, the components are produced from the same material.
According to another embodiment of the method according to the invention, the components are produced from different materials . According to one embodiment of the method according to the invention, the components are produced from metallic materials.
According to one embodiment in which the components are produced from different materials, the components are produced from aluminium or from titanium.
According to another embodiment in which the components are produced from different materials, the components are produced from aluminium and from steel.
According to yet another embodiment in which the components are produced from different materials, the components are produced from magnesium and from titanium.
According to a further embodiment in which the components are produced from different materials, the components are produced from magnesium and from steel.
According to another embodiment of the method according to the invention, the components are produced from non-metallic materials .
According to a further embodiment of the method according to the invention, one of the components is produced from a metallic material and one of the components is produced from a non-metallic material.
According to one development of the method according to the invention, the components are additionally positively connected during the extrusion.
The components may be positively connected to each other by part of one component being pressed into a recess of the other component during the extrusion. The recess may be formed by a groove extending in the longitudinal direction of the components.
The recess may be formed by a serration.
According to one embodiment of the method according to the invention, the joined-together component is produced linearly in the extrusion.
According to another embodiment of the method according to the invention, the joined-together component is produced with a curvature in the extrusion.
Furthermore, the invention provides an apparatus for producing joined-together components by extrusion, comprising an extrusion die for producing a first, longitudinally extended component by extrusion, and for connecting the first component to an already produced second component at a connecting surface extending in the longitudinal direction of the first component. According to the invention, the extrusion die is intended for forming part of the outline of the first component, which is otherwise made up by the second component, and the extrusion die is intended for moving the second component along in the direction of extrusion, the second component being formed as a solid profile and guided in such a way with respect to the extrusion die that it cannot evade the pressure generated in the die during the extrusion.
According to one embodiment of the invention, it is provided that the extrusion die only partly surrounds the first component and the part of the first component that is not surrounded by the extrusion die forms the connecting surface with the second component.
According to one embodiment of the invention, the apparatus is formed in such a way that the second component is guided parallel to the direction of extrusion through the extrusion die . Furthermore, the invention provides a joined-together component for aerospace that is produced by the method according to the invention.
The joined-together component may form a floor grid or seat rail structure.
According to one embodiment of the joined-together component according to the invention, the floor grid or seat rail structure is a component that has high wear and corrosion resistance connected to a component that has high strength with low weight.
According to another embodiment, the joined-together component according to the invention forms an interface structure for joining skin panels produced in a composite type of construction to a metallic support structure.
In this case, the interface structure may comprise a component which is produced from a metal having high corrosion resistance and serves for joining the skin panels produced in a composite type of construction and a component which is produced from a metal that is galvanically compatible with the metallic support structure.
The component may be linear.
The component may be curved.
Exemplary embodiments of the method and apparatus according to the present invention and of joined-together components according to the invention are explained below on the basis of the drawing, in which:
Figure 1 shows a schematized side view of a method and an apparatus for producing joined-together components by extrusion according to an exemplary embodiment of the invention;
Figure 2 shows an enlarged, partial cross-sectional view of Figure 1;
Figure 3 shows a perspective view of a joined-together component produced according to a further exemplary embodiment of the invention; and
Figure 4 shows a perspective view of a joined-together component produced according to yet a further exemplary embodiment of the invention.
Represented in Figure 1 is an extrusion die 3, with which a first component 1 is produced by extrusion. The first component 1 is made to extend longitudinally in the direction of extrusion. The material from which the first component 1 is produced by extrusion may for example be a metal.
As the cross-sectional representation of Figure 2 shows, the first component 1 has in cross section an outline 5 at which the first component 1 is partly surrounded by the extrusion die 3. On the part not surrounded by the extrusion die 3, the first component 1 has a connecting surface 4 with a second component 2. This second component 2 is an already produced component in the form of a solid profile, in particular a solid rail-like profile, with which the first component 1 is integrally connected during its production by extrusion, thereby forming a joined-together component 1, 2 or composite component. This is to be referred to here as coextrusion. The outline 5 of the first component 1 is formed partly, that is to say to the extent to which the first component 1 is surrounded at its outline 5 by the extrusion die 3, by the extrusion die 3, and is otherwise, that is to say to the extent to which the first component 1 is not surrounded at its outline 5 by the extrusion die 3, made up by the connecting surface 4 with the second component 2. The second component 2 therefore serves as part of the die for the extrusion of the first component 1.
During the coextrusion carried out in this way, the solid second component 2 is moved along parallel to the direction of extrusion, which is represented in Figure 1 by an arrow, that is to say substantially also in the longitudinal direction of the first component 1, in the direction of the extruded first component 1. The considerable pressure produced in the extrusion die 3 in the extrusion of the first component 1 has the effect that the first component 1 and the second component 2 are intimately connected to each other and joined at the connecting surface 4 by diffusion processes and/or mechanical interlocking, so that the joined-together component 1, 2 or composite component is formed.
The second component 2 is guided with respect to the extrusion die 3 in such a way that it cannot evade the pressure produced in the die 3 during the extrusion. The solid, second component 2 may in particular also be guided parallel to the direction of extrusion through the extrusion die 3, the outline 5 of the first component 1, as already mentioned above, being formed partly, that is to say to the extent to which the first component 1 is surrounded at its outline 5 by the extrusion die 3, by the extrusion die 3 itself, and being otherwise, that is to say to the extent to which the first component 1 is not surrounded at its outline 5 by the extrusion die 3, made up by the second component 2 or by the connecting surface 4 with the second component 2. The second component 2 therefore serves as part of the die for the extrusion of the first component 1.
The individual components 1, 2 forming the joined-together component 1, 2 may be produced from the same material or from different materials. The individual components 1, 2 may be produced in particular from metallic materials. In the case of embodiments in which the individual components 1, 2 forming the joined-together component 1, 2 are produced from different materials, there are possibilities for combining different materials with different properties with one another in an advantageous way, in order to optimize weight, strength, vibrational behaviour, corrosion or wear properties or the like and/or achieve lower production costs.
If the components 1, 2 are produced from different metallic materials, it is possible for example for one to be produced from aluminium or an aluminium alloy and the other to be produced from titanium or a titanium alloy. This allows the good corrosion or wear properties of titanium to be combined with the low weight and relatively low price of aluminium.
If, of the components 1, 2, one is produced from aluminium or an aluminium alloy and the other is produced from steel or a steel alloy, the good wear properties of steel can be combined with the low weight of aluminium.
Similar advantageous combinations are possible if, of the components 1, 2, one is produced from magnesium or a magnesium alloy and the other is produced from titanium or a titanium alloy or one is produced from magnesium or a magnesium alloy and the other is produced from steel or a steel alloy.
Figures 3 and 4 show exemplary embodiments in which the components 1, 2 are additionally positively connected to each other during the extrusion. The components 1, 2 may be positively connected to each other by part Ia; Ib of one component, in the case of the embodiments represented here the first component 1, being pressed into a recess 2a; 2b of the other component, in the case of the embodiments represented here the second component 2, during the extrusion.
As Figure 3 shows, the recess 2a of the component into which the part Ia of one component is pressed during the extrusion may be formed by a groove extending in the longitudinal direction of the components 1, 2 or of the joined-together component 1 , 2.
In the case of the exemplary embodiment shown in Figure 4, the recess 2b of the component into which the part Ib of the one component is pressed during the extrusion is formed by a serration.
The joined-together component 1, 2 may be produced linearly in the extrusion, but it may also be provided that the joined- together component 1, 2 is produced with a curvature in the extrusion, corresponding to the form of the solid second component 2 that is used.
The joined-together or composite component 1, 2 may be used for various purposes for the production of structures and components in aerospace. For example, the joined-together component 1, 2 may form a floor grid or seat rail structure, in which a component having a high wear and corrosion resistance is connected to a component having high strength with low weight.
According to another intended use, the joined-together component 1, 2 may form an interface structure for joining skin panels produced in a composite type of construction, i.e. from fibre-reinforced plastics and metal layers, to a metallic support structure, in particular of aluminium or aluminium alloy. in the case of such hybrid structures, there is a requirement to reliably exclude galvanic corrosion caused by the different metals used in the composite panels and in the supporting structure. Consequently, the interface structure may comprise a component which is produced from a first metal having high corrosion resistance, for example from titanium or a titanium alloy, and serves for joining the skin panels produced in a composite type of construction and a component which is produced from a second metal that is galvanically compatible with the metallic support structure, for example from aluminium or an aluminium alloy. The method and apparatus according to the invention and the joined-together component produced according to the invention have major advantages. The number of process steps in the case of the coextrusion according to the invention is reduced in comparison with the conventional production with separate extrusion and subsequent joining, and consequently lower-cost production is possible at a higher production rate. Materials with different properties may be combined with one another in an advantageous way, in order to optimize weight, strength, vibrational behaviour, corrosion or wear properties or the like and/or achieve lower production costs. For example, it is possible to join materials which otherwise cannot be connected to one another, or only with difficulty, such as high-strength, non-weldable aluminium alloys with titanium, magnesium or steel alloys. Furthermore, great process reliability is ensured along with consistent and reproducible quality of the connection. The advantages in terms of weight, strength, vibrational behaviour, corrosion or wear properties and costs come into effect in particular in the case of components that are intended for aerospace .
List of reference numerals
1 first component Ia projecting part Ib projecting part
2 second component 2a recess
2b recess
3 extrusion die
4 connecting surface
5 outline
6 direction of extrusion

Claims

Patent claims
1. Method for producing joined-together components by- extrusion, in particular for aerospace, in which a first, longitudinalIy-extended component (1) is produced by extrusion by means of an extrusion die (3) and connected to an already produced second component (2) at a connecting surface (4) running in the longitudinal direction of the first component (1) , the first and second components (1, 2) being integrally connected to each other during the extrusion, thereby forming the joined-together component
(1, 2), characterized in that the outline (5) of the first component (1) is formed partly by the extrusion die (3) and is otherwise made up by the connecting surface (4) of the second component (2), the second component (2) being formed as a solid profile and moved along during the extrusion of the first component (1) parallel to the direction of extrusion in the direction of the extruded first component (1) , and guided in such a way that it cannot evade the pressure generated in the die (3) during the extrusion.
2. Method according to Claim 1, characterized in that the extrusion die (3) only partly surrounds the first component
(1) and the part of the first component (1) that is not surrounded by the extrusion die (3) forms the connecting surface (4) with the second component (2).
3. Method according to Claim 1 or 2 , characterized in that the second component (2) is guided along parallel to the direction of extrusion through the extrusion die (3) .
4. Method according to Claim 1, 2 or 3, characterized in that the components (1, 2) are produced from the same material.
5. Method according to Claim 1, 2 or 3, characterized in that the components (1, 2) are produced from different materials.
6. Method according to Claim 4 or 5, characterized in that the components (1, 2) are produced from metallic materials.
7. Method according to Claims 5 and 6, characterized in that the components { 1 , 2 ) are produced from aluminium and from titanium or from aluminium and from steel.
8. Method according to Claims 5 and 6, characterized in that the components (1, 2) are produced from magnesium and from titanium.
9. Method according to Claims 5 and 6, characterized in that the components (1, 2) are produced from magnesium and from steel.
10. Method according to Claim 4 or 5, characterized in that the components (1, 2) are produced from non-metallic materials.
11. Method according to Claim 4 or 5, characterized in that one of the components {1; 2) is produced from a metallic material and one of the components (2; 1) is produced from a non-metallic material.
12. Method according to one of Claims 1 to 11, characterized in that the components (1, 2) are additionally positively connected to each other during the extrusion.
13. Method according to Claim 12, characterized in that the components (1, 2) are positively connected to each other by part {la; Ib) of one component (1) being pressed into a recess (2a; 2b) of the other component (2) during the extrusion.
14. Method according to Claim 13, characterized in that the recess (2a) is formed by a groove extending in the longitudinal direction of the components {1, 2) .
15. Method according to Claim 13, characterized in that the recess (2b) is formed by a serration.
16. Method according to one of Claims 1 to 15, characterized in that the joined-together component (1, 2) is produced linearly in the extrusion.
17. Method according to one of Claims 1 to 15, characterized in that the joined-together component (1, 2) is produced with a curvature in the extrusion.
18. Apparatus for producing joined-together components by extrusion, comprising an extrusion die (3) for producing a first, longitudinally extended component (1) by extrusion, and for connecting the first component (1) to an already produced second component (2) at a connecting surface (4) extending in the longitudinal direction of the first component (1), characterized in that the extrusion die (3) is intended for forming part of the outline (5) of the first component (1) , which is otherwise made up by the second component (2), and in that the extrusion die (3) is intended for moving the second component (2) along in the direction of extrusion (4), the second component (2) being formed as a solid profile and guided in such a way with respect to the extrusion die (3) that it cannot evade the pressure generated in the die (3) during the extrusion.
19. Apparatus according to Claim 18, characterized in that the extrusion die (3) only partly surrounds the first component (1) and the part of the first component (1) that is not surrounded by the extrusion die (3) forms the connecting surface (4) with the second component (2).
20. Apparatus according to Claim 18 or 19, characterized in that the apparatus is formed in such a way that the second component (2) is guided along parallel to the direction of extrusion through the extrusion die (3).
21. Component for aerospace, which is produced by the method according to one of Claims 1 to 17.
22. Component according to Claim 21, characterized in that the component (1, 2) forms a floor grid or seat rail structure.
23. Component according to Claim 22, characterized in that, in the floor grid or seat rail structure, a component having high wear and corrosion resistance is connected to a component having high strength with a low weight.
24. Component according to Claim 21, characterized in that the component (1, 2) forms an interface structure for joining skin panels produced in a composite type of construction to a metallic support structure.
25. Component according to Claim 24, characterized in that the interface structure comprises a component which is produced from a metal having high corrosion resistance and serves for joining the skin panels produced in a composite type of construction and a component which is produced from a metal that is galvanically compatible with the metallic support structure.
26. Component according to one of Claims 21 to 25, characterized in that the component (1, 2) is linear.
27. Component according to one of Claims 21 to 25, characterized in that the component (1, 2) is curved.
PCT/EP2007/056671 2006-07-07 2007-07-03 Method and apparatus for producing components by extrusion and components produced thereby WO2008003694A1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE102006031472 2006-07-07
DE102006031472.7 2006-07-07
DE102007002516A DE102007002516A1 (en) 2006-07-07 2007-01-17 Production of composite components, for use in aircraft and aerospace industries, comprises extruding bar and moving second bar in direction of extrusion, so that bond is formed where their surfaces are in contact
DE102007002516.7 2007-01-17
US93159007P 2007-05-24 2007-05-24
US60/931,590 2007-05-24

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1470524A (en) * 1966-03-02 1967-02-24 Reynolds Metals Co Improvements to conductor rails and to manufacturing processes for such rails or similar articles
DE2208859B1 (en) * 1972-02-25 1973-08-23 Fa Otto Fuchs PROCESS FOR PLATING METAL PROFILES AND EXTRUSION DIE FOR CARRYING OUT THE PROCESS
JPS5533824A (en) * 1978-08-29 1980-03-10 Hitachi Cable Ltd Method and apparatus for producting composite material
JPS5641015A (en) * 1979-09-12 1981-04-17 Hitachi Cable Ltd Manufacture of composite rod
US4342211A (en) * 1977-03-22 1982-08-03 Swiss Aluminium Ltd. Process and apparatus for extruding a composite section
JPS5994308A (en) * 1982-11-22 1984-05-31 三菱電機株式会社 Method of producing aluminum composite superconductive conductor
US4722818A (en) * 1984-03-20 1988-02-02 The Standard Products Company Method for making an elongated composite article
DE8815829U1 (en) * 1988-12-21 1989-02-16 Brose Fahrzeugteile Gmbh & Co Kg, 8630 Coburg, De
EP0677338A1 (en) * 1994-03-28 1995-10-18 Alusuisse-Lonza Services AG Composite profile with light alloy supporting structure and at least one metalically bonded strip and method for producing a composite profile
DE29906063U1 (en) * 1998-04-02 1999-06-10 Brose Fahrzeugteile Rail guide for adjusting devices and rail device for a rail guide
DE19755901A1 (en) * 1997-12-08 1999-06-17 Brose Fahrzeugteile Adjuster for seat of motor vehicle

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1470524A (en) * 1966-03-02 1967-02-24 Reynolds Metals Co Improvements to conductor rails and to manufacturing processes for such rails or similar articles
DE2208859B1 (en) * 1972-02-25 1973-08-23 Fa Otto Fuchs PROCESS FOR PLATING METAL PROFILES AND EXTRUSION DIE FOR CARRYING OUT THE PROCESS
US4342211A (en) * 1977-03-22 1982-08-03 Swiss Aluminium Ltd. Process and apparatus for extruding a composite section
JPS5533824A (en) * 1978-08-29 1980-03-10 Hitachi Cable Ltd Method and apparatus for producting composite material
JPS5641015A (en) * 1979-09-12 1981-04-17 Hitachi Cable Ltd Manufacture of composite rod
JPS5994308A (en) * 1982-11-22 1984-05-31 三菱電機株式会社 Method of producing aluminum composite superconductive conductor
US4722818A (en) * 1984-03-20 1988-02-02 The Standard Products Company Method for making an elongated composite article
DE8815829U1 (en) * 1988-12-21 1989-02-16 Brose Fahrzeugteile Gmbh & Co Kg, 8630 Coburg, De
EP0677338A1 (en) * 1994-03-28 1995-10-18 Alusuisse-Lonza Services AG Composite profile with light alloy supporting structure and at least one metalically bonded strip and method for producing a composite profile
DE19755901A1 (en) * 1997-12-08 1999-06-17 Brose Fahrzeugteile Adjuster for seat of motor vehicle
DE29906063U1 (en) * 1998-04-02 1999-06-10 Brose Fahrzeugteile Rail guide for adjusting devices and rail device for a rail guide

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