EP3122490B1 - Procédé et dispositif de façonnage de tronçons profilés extrudés en magnésium ou alliage de magnésium - Google Patents

Procédé et dispositif de façonnage de tronçons profilés extrudés en magnésium ou alliage de magnésium Download PDF

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Publication number
EP3122490B1
EP3122490B1 EP15714395.9A EP15714395A EP3122490B1 EP 3122490 B1 EP3122490 B1 EP 3122490B1 EP 15714395 A EP15714395 A EP 15714395A EP 3122490 B1 EP3122490 B1 EP 3122490B1
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EP
European Patent Office
Prior art keywords
chamber profile
tool
profile sections
hollow
hollow chamber
Prior art date
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Application number
EP15714395.9A
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German (de)
English (en)
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EP3122490A1 (fr
Inventor
Ralf Anderseck
Andreas Jäger
Karl-Heinz Lindner
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/06Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00Extruding metal; Impact extrusion
    • B21C23/002Extruding materials of special alloys so far as the composition of the alloy requires or permits special extruding methods of sequences
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C35/00Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
    • B21C35/02Removing or drawing-off work
    • B21C35/023Work treatment directly following extrusion, e.g. further deformation or surface treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02Stamping using rigid devices or tools
    • B21D22/022Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/06Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00Riveting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02Die forging; Trimming by making use of special dies ; Punching during forging
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C23/00Alloys based on magnesium

Definitions

  • the invention relates to a method and a device for processing extruded hollow chamber profile sections made of magnesium or magnesium alloys with regard to their outer contour by hot calibration, possibly in combination with hot stamping and / or cutting and / or punching operations for the subsequent joining processes, from which the following assemblies (lightweight components) should be joined.
  • the DE 2 105 537 C3 describes a device for the hot calibration of rod-shaped rolling stock during hot rolling in the production flow of a continuous rolling mill, in which a die is arranged behind the finishing rolling stand and the hot-calibrating rod-shaped rolling stock is pushed through the die by the rollers of the finishing rolling stand, the die being designed as a closed ring die and the ring die, which can be heated to rolling temperature, consists of a highly heat-resistant material and that in front of the ring die there is a nozzle ring with an opening for the addition of thermally stable lubricants such as colloidal graphite, low-melting glass, soda, burnt lime or salts, and two labyrinths in front of the nozzle ring -Ring chambers are arranged and that the ring die is axially sprung in both directions.
  • thermally stable lubricants such as colloidal graphite, low-melting glass, soda, burnt lime or salts
  • the lightweight construction element consists of several extruded hollow profiles joined together in a flat arrangement.
  • the associated method comprises the steps of a) extrusion of hollow profiles with a wall thickness of a maximum of 0.5% of the diameter of the circumscribed circle of the lightweight construction element made therefrom, and b) joining of several hollow profiles in a flat arrangement to form a lightweight construction element, which has a circumscribed circle of has at least 300 mm.
  • the hollow profiles are joined by friction welding or gluing.
  • Extruded profiles in particular multi-chamber extruded profiles, distort when they exit the die of the extrusion press. This leads to problems in a subsequent joining process in which flat assemblies are to be assembled from the extruded profile sections.
  • light metals Compared to the steel materials most commonly used today, light metals have the advantage that they have a significantly lower density.
  • the lightest of these metals is magnesium; it is around 35% lighter than aluminum.
  • Today's new magnesium alloys have very good properties, such as corrosion resistance and good deformation properties, so that they can be used for extrusion.
  • a disadvantage of extrusion is that the size of the extruded profiles that can be produced is limited, so that one is forced to join assemblies from individual extruded profile sections.
  • the object of the invention is to provide a method and a device for processing extruded hollow-chamber profile sections made of magnesium or magnesium alloys, whereby the hollow-chamber profile sections with regard to their outer contour by hot calibration, possibly in combination with hot stamping and / or cutting or punching operations for subsequent joining processes are directed and fixed to a uniform product size.
  • Another object is to create a lightweight construction element made from the machined hollow-chamber profile sections, which is made from individual extruded profile sections by joining, whereby virtually any size lightweight construction element can be realized.
  • this object is achieved in that, by means of the method, the extruded hollow chamber profile sections made of magnesium or magnesium alloys are brought to a dimensional accuracy with regard to their outer contour by hot calibration for the subsequent joining process in order to simplify the joining process. At the same time, it is possible to carry out stamping operations, cutting and / or punching operations together with hot calibration.
  • the hot calibration is preferably carried out in the production flow following the extrusion. This has the advantage that the profile emerging from the die already has a temperature in the range of 250-450 ° C and does not have to be additionally heated.
  • the profile sections calibrated in this way can be joined to lightweight construction elements without great effort.
  • lightweight construction elements in vehicle construction can, for example, be support structures in the form of floor assemblies.
  • the Associated Figure 1 shows a device for performing the method for hot calibration of extruded hollow chamber profile sections.
  • the method according to the invention comprises the steps of placing the hollow-chamber profile sections 1 heated to a temperature in the range of 250 to 450 ° C in a two-part calibration tool 2 preheated to a temperature in the range of 300 to 600 ° C and applying pressure to the calibration tool 2 by means of one or more press cylinders 3 of a press 4 .
  • insert elements are inserted into the end faces of the cut profile sections 1 .
  • the insert elements can have peg-like extensions, the cross-sections of which are adapted to the inner cross-sections of the hollow-chamber profile sections 1 .
  • the Figure 1 shows a schematic diagram of the device for performing the method.
  • the device consists essentially of a press 4 and a calibration tool 2.
  • the calibration tool 2 is designed in two parts and accordingly consists of two tool halves I, II which can be moved relative to one another, between which the hollow-chamber profile section 1 is inserted, whereby the tool halves are adapted to the cross-section of the profile to be calibrated.
  • the tool halves are moved towards one another and the profile section is calibrated, ie the hollow-chamber profile sections are brought to a uniform size and aligned at the same time.
  • the tool halves I, II have bores 5 into which the corresponding heating cartridges are inserted in order to heat the tool halves I, II or to keep them at temperature.
  • one or more stamping dies can be arranged in one or both tool halves I, II, with the aid of which a surface stamping of the hollow-chamber profile sections can be carried out on one or both sides during the calibration process.
  • cutting or punching tools are integrated into the tool halves I, II in order to carry out cutting or punching operations in the hollow-chamber profile sections 1 at the same time during the calibration process.
  • the calibrated and / or embossed and / or perforated hollow chamber profile sections can be joined to form a lightweight construction element.
  • the lightweight construction element can be designed, for example, as a support structure for a land, air or water vehicle, the individual heat-calibrated hollow chamber profile sections 1 forming the lightweight construction element being connected to one another by a permanent connection. This can preferably be done by friction stir welding, which results in short welding times and high economic efficiency in the joining process.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Extrusion Of Metal (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Claims (6)

  1. Procédé d'usinage du contour extérieur de profilés à chambre creuse extrudés en magnésium ou en alliages de magnésium par calibrage à chaud, au besoin en combinaison avec des opérations d'estampage à chaud et/ou de découpage et/ou de poinçonnage, dans lequel les profilés à chambre creuse sont chauffés à une température entre 250°C et 450°C et dans lequel les profilés à chambre creuse chauffés (1) sont introduits, dans une première étape, dans un outil de calibrage (2) en deux parties, préchauffé à une température entre 300°C et 600°C, et où des éléments d'insertion sont introduits dans les faces frontales des profilés à chambre creuse (1) coupés à longueur, et lesquels sont amenés, dans une deuxième étape, à une dimension uniforme avec un redressement simultané au moyen d'un outil de calibrage (2) qui est mis sous pression par un ou plusieurs cylindres de pression (3) d'une presse (4).
  2. Procédé de fabrication d'un élément de construction léger à partir de plusieurs profilés creux extrudés selon le procédé selon la revendication 1 et reliés entre eux à plat, caractérisé en ce que l'élément de construction léger est conçu comme une structure porteuse pour un véhicule terrestre, aérien ou aquatique et les différents profilés calibrés à chaud (1) formant l'élément de construction léger sont reliés entre eux par une liaison indémontable.
  3. Appareil pour la mise en œuvre du procédé selon la revendication 1,
    caractérisé en ce que
    le dispositif se compose d'une presse (4), d'éléments d'insertion et d'un outil de calibrage (2), l'outil de calibrage (2) étant constitué de deux moitiés d'outil (I, II) qui peuvent être déplacées l'une par rapport à l'autre et entre lesquelles est inséré le profilé à chambre creuse (1).
  4. Dispositif selon la revendication 3,
    caractérisé en ce que
    au moins une des moitiés de l'outil (I, II) est adaptée à la section du profil de la chambre creuse (1) à calibrer.
  5. Dispositif selon la revendication 3,
    caractérisé en ce que
    des matrices d'estampage sont disposées dans au moins une des moitiés d'outil (I, II) sur le côté faisant face à la section de profilé à chambre creuse (1).
  6. Dispositif selon les revendications 3 à 5,
    caractérisé en ce que
    dans les moitiés (I, II) de l'outil de calibrage (2), des trous (5) sont prévus pour la réception de cartouches de chauffage.
EP15714395.9A 2014-03-26 2015-02-13 Procédé et dispositif de façonnage de tronçons profilés extrudés en magnésium ou alliage de magnésium Active EP3122490B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014004329.0A DE102014004329A1 (de) 2014-03-26 2014-03-26 Verfahren und Vorrichtung zum Bearbeiten von stranggepessten Profilabschnitten aus Magnesium oder Magnesiumlegierungen und ein daraus hergestelltes Leichtbauelement
PCT/DE2015/000070 WO2015144113A1 (fr) 2014-03-26 2015-02-13 Procédé et dispositif de façonnage de tronçons profilés extrudés à partir de magnésium ou d'alliages de magnésium et élément de construction léger fabriqué à partir de ceux-ci

Publications (2)

Publication Number Publication Date
EP3122490A1 EP3122490A1 (fr) 2017-02-01
EP3122490B1 true EP3122490B1 (fr) 2020-10-28

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EP15714395.9A Active EP3122490B1 (fr) 2014-03-26 2015-02-13 Procédé et dispositif de façonnage de tronçons profilés extrudés en magnésium ou alliage de magnésium

Country Status (8)

Country Link
US (1) US10323309B2 (fr)
EP (1) EP3122490B1 (fr)
JP (1) JP2017518183A (fr)
KR (1) KR20160140785A (fr)
CN (1) CN106132583B (fr)
CA (1) CA2943826C (fr)
DE (1) DE102014004329A1 (fr)
WO (1) WO2015144113A1 (fr)

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US20150315666A1 (en) * 2014-04-30 2015-11-05 Ford Global Technologies, Llc Induction annealing as a method for expanded hydroformed tube formability
CN108393383A (zh) * 2018-05-09 2018-08-14 新昌县大雄锻造有限公司 一种冲压装置
DE102020122711A1 (de) 2020-08-31 2022-03-03 Benteler Automobiltechnik Gmbh Verfahren zum Kalibrieren eines metallischen Profilrohlings mit wenigstens einer massiven Wand

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Also Published As

Publication number Publication date
JP2017518183A (ja) 2017-07-06
EP3122490A1 (fr) 2017-02-01
US20170107601A1 (en) 2017-04-20
CA2943826C (fr) 2019-05-14
CN106132583A (zh) 2016-11-16
CN106132583B (zh) 2020-03-24
WO2015144113A1 (fr) 2015-10-01
CA2943826A1 (fr) 2015-10-01
US10323309B2 (en) 2019-06-18
KR20160140785A (ko) 2016-12-07
DE102014004329A1 (de) 2015-10-01

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