WO2014091014A1 - Dispositif de formage à chaud - Google Patents

Dispositif de formage à chaud Download PDF

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Publication number
WO2014091014A1
WO2014091014A1 PCT/EP2013/076608 EP2013076608W WO2014091014A1 WO 2014091014 A1 WO2014091014 A1 WO 2014091014A1 EP 2013076608 W EP2013076608 W EP 2013076608W WO 2014091014 A1 WO2014091014 A1 WO 2014091014A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
section
hot
forming
workpiece
Prior art date
Application number
PCT/EP2013/076608
Other languages
German (de)
English (en)
Inventor
Manfred Beck
Michael Braun
Ralf Hund
Original Assignee
Braun, Manuela
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
Application filed by Braun, Manuela filed Critical Braun, Manuela
Priority to EP13811422.8A priority Critical patent/EP2931453B1/fr
Publication of WO2014091014A1 publication Critical patent/WO2014091014A1/fr

Links

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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
    • 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
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards

Definitions

  • the invention relates to hot forming apparatus for hot working and / or press hardening workpieces according to the subject matter of claim 1 and a method for hot working and / or press hardening after
  • Hot-forming devices for hot-forming or / and press-hardening of workpieces are known and described, for example, in DE 10 2007 047 314 A1.
  • Sheet metal components from sheet metal blanks which includes stations upstream and downstream of the hot forming device
  • the cycle time of the individual stations should be about the same to avoid dead times and thus to achieve optimum workpiece throughput.
  • Hot forming devices in which workpieces are to be formed which, in addition to press-hardened regions, should also have ductile regions, require a significantly higher cycle time than the other stations if the workpiece in the tool cools down to such an extent that it no longer becomes distorted after removal from the mold suffers, thus forming a "bottleneck" in the technological process.
  • Ambient temperature outside the tool may occur a delay of the workpiece because it is no longer fixed in the tool. This results in costly rework.
  • the object of the present invention is to specify an apparatus and a method for hot working or / and press hardening of workpieces which does not have the mentioned disadvantages.
  • a hot-forming device for hot-forming and / or press-hardening workpieces preferably made of sheet steel, which after press hardening has a hardened workpiece section and a ductile workpiece section, is provided, wherein
  • the hot-forming device comprises a first forming station with a first tool and a second forming station arranged behind the first forming station with a second tool, wherein the second
  • the tool is formed with the shape contour of the first tool that at least the first tool, a first tool portion, which is provided for forming the hardened workpiece portion, and a second tool portion, which is for forming the ductile
  • the second tool also has a first tool section, which is provided for forming the hardened workpiece section, and a second tool section
  • Workpiece throughput can be achieved with respect to a forming station with only one tool. Ideally, the workpiece throughput is doubled.
  • Another advantage is that due to the planned cooling in the tool no delay can occur.
  • the delay can occur when cooled outside the tool, especially for workpieces that are made of different materials, for example, with different coefficients of expansion, or have areas of different material thickness. Rework may be required to ensure high dimensional accuracy
  • the first and second tool sections need not be contiguous. It can be provided, for example, that a first tool section is arranged between two second tool sections or vice versa. For example, so-called crumple zones, which can absorb impact energy, can be formed by second tool sections with ductile formation in workpieces intended for installation in motor vehicles. It can be provided that the setpoint temperature of the first tool in the first tool section about 20 ° C and in the second
  • Tool section of the first tool are integrally formed.
  • the two workpiece sections are only by
  • first and the second tool section of the first tool are separated by an expansion joint.
  • a compensation element is arranged, which by expansion joints of the first and the second tool portion of the first tool, which by expansion joints of the first and the second
  • the second tool has a first tool section, which is provided for forming the hardened workpiece section, and a second tool section
  • Tool section for forming the ductile workpiece section has.
  • the two tool sections can be delimited analogously to the two tool sections of the first tool.
  • the inclination of the second tool in the first tool section about 20 ° C and in the second
  • Tool section 20 to 200 ° C It may thus be provided, for example, that the setpoint temperature in the first tool section is 20 ° C and in the second tool section 200 ° C.
  • the forming stations may comprise additional devices for processing the workpieces, for example punching and punching devices
  • these devices are in the second
  • Tool sections arranged in which the workpiece is formed ductile and / or in the first tool portion of the first tool. If the additional devices during hot forming before the
  • an industrial robot is arranged, which is designed such that it removes a machined workpiece from the first forming station and stores in the second forming station for further processing.
  • the term "industrial robot” is understood here also transport devices that work, for example, with intermittently moving gripper bars or the like.
  • a control device for controlling the hot-forming device may be provided a control device, wherein the control device has inputs which are connected to temperature sensors, which are arranged on the tool sections of the tools, and having outputs that with
  • Tempering devices are connected, which cooperate with the tool sections of the tools.
  • the control device can have further inputs and outputs and, for example, also be provided for controlling further stations which are upstream and / or downstream of the hot-forming device.
  • Cooling circuit with arranged in the tool sections of the tools cooling channels, a heat exchanger and a coolant compressor comprises.
  • the object of the invention is further with a method for
  • Hot working and / or press hardening of workpieces preferably made of sheet steel, comprising the hot stamping and / or press hardening process steps, the workpieces having a hardened workpiece section and a ductile workpiece section after press hardening, and wherein
  • the press hardening process step is carried out in two time-sequential substeps, a first substep having a first cooling time in a first tool having a first tool portion provided to form the hardened workpiece portion and a second tool portion adapted to form the ductile one
  • the proposed method has the advantage that the cycle time corresponding to the cooling time, which is required for the Warmunnfornnen and / or press hardening in only one process step, is divided into two process steps with two cycle times, each of which is shorter in itself than the aforementioned cycle time. This achieves a higher workpiece throughput.
  • Another advantage of the proposed method is that due to the planned cooling in the tool no delay can occur.
  • the delay can occur during cooling outside the tool, in particular for workpieces that are made of different materials, for example, with different coefficients of expansion, or regions of different material thickness, occur and require rework to achieve a high dimensional accuracy of the workpiece.
  • the setpoint temperature of the first tool in the first tool section to about 20 ° C and in the second
  • Tool section is set in the range of 300 to 400 ° C. Under the temperature indication "approx. 20 ° C "is understood here to mean that
  • Workpiece section is provided, to about 20 ° C and in a second tool section, which is provided for forming the ductile workpiece section, is set in the range of about 20 to 200 ° C.
  • a second tool section which is provided for forming the ductile workpiece section
  • first cooling time for forming the hardened workpiece section and that the sum of the first cooling time and the second cooling time for forming the ductile workpiece section is provided.
  • the cooling time of the second workpiece section is thus further increased, and the storage phase of the workpiece removed from the device is used for complete cooling.
  • FIG. 1 shows a hot forming device according to the invention in one
  • Fig. 2 shows a first embodiment of an inventive
  • Hot forming device in a schematic plan view
  • Fig. 4a shows a second embodiment of an inventive
  • Hot forming device in a schematic plan view
  • Hot forming device in a schematic plan view
  • Fig. 6 is a block diagram of the Hotumformvor rect.
  • Fig. 1 shows a hot forming device 1, which is called for the hot forming and / or press hardening of sheet metal blanks and / or sheet metal parts made of steel with different material thickness, hereinafter referred to as workpiece 4.
  • the workpiece is heated to a temperature above the Austenitmaschinestemperatur for hot forming with respect to subsequent press hardening and fixed between a tool upper part and a lower tool part of a forming and / or pressing tool and subjected to a pressing pressure. That's the hot forming. Thereafter, the workpiece is in
  • Ductile sections to form ductile sections must be cooled considerably slower than during press hardening, so that no martensitic transformation takes place.
  • the hot forming device 1 has a frame-shaped frame 1 1, in which a first forming station 2 with a first tool 3 and a second forming station 2 'with a second tool 3', which is formed with the shape contour of the first tool 3, respectively. Between one
  • Tool upper part 31 and a lower tool part 32 the workpiece 4 can be arranged.
  • Fig. 1 is at the workpiece 4 to a plate-shaped sheet metal blank made of a high-strength hardenable steel.
  • the upper tool part 31 is rigidly connected to a head plate 12.
  • the top plate 12 is rigidly connected to an output of a supported on the frame 1 1 drive 13.
  • the lower tool part 32 is arranged on a supported on the frame 1 1 base plate 14 and rigidly connected thereto.
  • the tool top 31 may be formed as a die, and the tool base 32 may be formed as a die, or vice versa.
  • Tool lower parts 32 have a first tool portion 33, which is provided for forming the hardened workpiece portion, and a second tool portion 34, which is for forming the ductile
  • the tools 3 and 3 'further have means for regulating the
  • Tool lower part 32 in its the workpiece 4 facing pressing surfaces near the tool surface cooling channels 35, which are connected to a cooling circuit, not shown in Fig. 1.
  • the cooling channels 35 are flowed through by a cooling medium, which dissipates heat from the workpiece 4.
  • the first tool sections 33 and the second tool sections 34 of the two tools 3 and 3 ' have separate cooling circuits in order to be able to set different setpoint temperatures that are to be achieved
  • Sollendtemperatur the workpiece section after a predetermined cycle time correspond.
  • heating means may be provided to preheat, if necessary, cold tools to a temperature above ambient temperature.
  • the first tool 3 in the second tool section 34 is heated to 300 to 400 ° C.
  • the workpiece 4 successively passes through a heating station 8, the first forming station 2 and the second forming station 2 '.
  • machined workpiece 4 of the first forming station 2 removes and stores in the second forming station 2 'for further processing.
  • Storage station 7 arranged for machined workpieces.
  • Fig. 2 shows a schematic plan view of the tool lower parts 32 of the juxtaposed tools 3 and 3 'with launched
  • the tools 3 and 3 ' each have a first and a second tool portion 33, 34, which are integrally formed in the embodiment shown in FIG.
  • the second tool 3 ' is formed with the shape contour of the first tool 3, that is, the inner contour of the second tool 3' corresponds to the outer contour of the first tool 3 removed workpiece 4. In this way it is ensured that in the second
  • Tool 3 'the press hardening of the workpiece 4 can be continued.
  • Fig. 3 shows a temperature-time diagram
  • a workpiece 4 is a on the
  • Storage station 6 removed for unprocessed workpieces formed workpiece stack and stored in the heating station 8.
  • the workpiece 4 stored in the heating station 8 is at a temperature above the
  • the heated workpiece 4 is the
  • Warming station 8 removed and stored in the open tool 3 of the first forming station 2.
  • a fourth method step the tool 3 of the forming station 2 is closed and the heated workpiece 4 is hot-formed.
  • the formed workpiece 4 is partially press-hardened when the tool 3 is closed.
  • the workpiece 4 has in the temperature to be hardened workpiece portion at time ti a temperature Tu and in the ductile workpiece part to be formed a temperature T 2 i on.
  • the temperatures Tu and T 2 i are equal and correspond to the temperature of the workpiece 4 after the forming, in which a small cooling of the workpiece 4 can occur.
  • T 22 is above the transition temperature of austenite to ferrite and Tu is below the transition temperature of austenite to ferrite, because the target temperature of first tool section 33 is selected to about 20 ° C, and the target temperature of the second tool section 34 is selected in the range of 300 to 400 ° C.
  • the temperature indication "approx. 20 ° C” means the ambient temperature, so it is not intended or necessary to choose a setpoint temperature below the ambient temperature.
  • the duration of the period Ati about 10s, wherein at time t 2, the temperature Ti 2 of the workpiece 4 in the workpiece to be hardened portion in the range of 60 to 150 ° C and the temperature T 22 of the workpiece 4 in the ductile workpiece section to be formed in Range is from 400 to 500 ° C.
  • the first tool 3 is opened and the partially hardened workpiece 4 is removed by the industrial robot 5 and stored in the opened second tool 3 '.
  • the in Fig. 3 2 for the sake of simplification, it is assumed that in a second period of time provided for the transfer
  • the partially hardened workpiece 4 is finished hardened when the tool 3 'is closed.
  • the workpiece 4 has the temperature Ti 2 in the workpiece section to be hardened at the time t 3, and the temperature T 2 2 in the workpiece section to be formed in a ductile manner. Both workpiece sections are now in a third period of time
  • Target temperature of the second tool 3 ' is in the first tool section 33 and in the second tool section 34 in the range of 20 to 200 ° C.
  • the duration of the time period At 2 is about 10 s, wherein at time t, the temperature Ti 2 of the workpiece 4 in the workpiece section to be hardened and in the workpiece section to be formed in a ductile manner approximately
  • a seventh method step the second tool 3 'is opened and the finished hardened workpiece 4 is removed by the industrial robot 5 and stored in the storage station 7 for machined workpieces.
  • Forming stations is compared to only one forming station, an increased throughput of workpieces possible because now the cycle times of the individual stations in the Ideally aligned.
  • the period of time available for the slow cooling of the ductile workpiece section is the sum
  • the first and the third period are the same as described above in the example. Since the stored in the storage station 7 workpieces 4 are already cooled, no more distortion occurs.
  • Figs. 4a and 4b show a second embodiment of a
  • Hot forming device is formed, with the difference that the first and the second tool portion 33, 34 of the first tool 3 are separated by a expansion joint 3d.
  • the expansion joint 3d prevents
  • FIG. 4 a shows the hot-forming device 1 at the time at which the first tool section 33 of the first tool 3 has a temperature of approximately 20 ° C. and the second tool section 34 has a temperature in the range from 300 to 400 ° C.
  • the expansion joint 3d between the first tool section 33 and the second tool section 34 has a minimum width, which is preferably 0 mm.
  • 4b shows the hot-forming device 1 at the time when the first tool section 33 and the second tool section 34 of the first tool 3 have cooled to ambient temperature.
  • the expansion joint 3d has a maximum width, because the second tool section 34 of 300 cooled to 400 ° C to ambient temperature and therefore has a shortened length.
  • Figs. 5a and 5b show a third embodiment of a
  • Hot forming device is formed, with the difference that between the first and the second tool portion 33, 34 of the first tool 3, a compensating element 3a is arranged.
  • the compensating element 3a abuts in the illustrated embodiment on the first tool section 33, so that the two expansion joints 3d have a different width.
  • the forming stations 2 and 2 ' may be additional devices for
  • Processing of the workpieces 4 include, for example, devices for punching and trimming.
  • these devices are arranged in the second tool sections 34, in which the workpiece 4 is formed ductile and / or in the first tool section 33 of the first tool 3, so that no increased wear due to high hardness occurs.
  • Fig. 6 shows a block diagram of the hot forming device 1, the
  • a control device 9 For controlling the hot forming device 1, a control device 9 is provided.
  • the control device 9 has inputs that with
  • Temperature sensors 9 s are connected, wherein the temperature sensors 9 s at the first and second tool sections 33, 34 of the first tool 3 and the second tool 3 'are arranged.
  • the controller 9 has outputs connected to control inputs of Tempering devices 10 are connected, which may be formed, for example, as cooling circuits with heat exchanger and compressor pump, wherein as shown in Fig. 1, the tools 3, 3 'cross-cooling channels 35 form sections of the cooling circuits.
  • At least one further output of the control device 9 is connected to the robot 5 arranged between the two forming stations 2 and 2 ', which transports the workpieces 4 from the first forming station 2 into the second forming station 2'.
  • control device 9 can have further inputs and outputs in order to control the storage station 6 and 7 shown in FIG. 1, the heating station 8 and the associated further robots 5 and to coordinate the process sequence described in FIG.
  • a computer-aided control device 9 is provided, in which the process flow is stored in a control software.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

L'invention concerne un dispositif de formage à chaud (1) destiné à soumettre des pièces (4), de préférence en tôle d'acier, à un formage à chaud et/ou à une trempe sous presse, les pièces (4) présentant, suite à la trempe sous presse, une partie durcie et une partie ductile. Le dispositif de formage à chaud (1) comprend un premier poste de formage (2) pourvu d'un premier outil (3) et un second poste de formage (2') qui est situé en aval du premier poste de formage (2) et qui est pourvu d'un second outil (3'), le second outil (3') étant réalisé de manière à ce que son contour corresponde à la forme du premier outil (3). Au moins le premier outil (3) est pourvu d'une première partie d'outil (33) conçue pour réaliser la partie durcie de ladite pièce et d'une seconde partie d'outil (34) conçue pour réaliser la partie ductile de ladite pièce. Les outils (3, 3') comprennent des modules de thermorégulation (10) destinés à régler les températures.
PCT/EP2013/076608 2012-12-14 2013-12-13 Dispositif de formage à chaud WO2014091014A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13811422.8A EP2931453B1 (fr) 2012-12-14 2013-12-13 Dispositif et procédé de formage à chaud

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012112334.9 2012-12-14
DE102012112334.9A DE102012112334A1 (de) 2012-12-14 2012-12-14 Warmumformvorrichtung

Publications (1)

Publication Number Publication Date
WO2014091014A1 true WO2014091014A1 (fr) 2014-06-19

Family

ID=49876570

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/076608 WO2014091014A1 (fr) 2012-12-14 2013-12-13 Dispositif de formage à chaud

Country Status (3)

Country Link
EP (1) EP2931453B1 (fr)
DE (1) DE102012112334A1 (fr)
WO (1) WO2014091014A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015193256A1 (fr) * 2014-06-16 2015-12-23 Autotech Engineering A.I.E. Formage à chaud et trempe dans une matrice

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
DE102014109883B4 (de) 2014-07-15 2023-05-04 Manuela Braun Umformeinrichtung zum Umformen und nachfolgenden Presshärten eines Blechzuschnitts oder eines vorgeformten Halbzeugs aus Stahl sowie damit hergestelltes Stahlwerkstück
DE102014119545A1 (de) 2014-12-23 2016-06-23 Benteler Automobiltechnik Gmbh Federnd gelagertes segmentiertes Warmumformwerkzeug und Verfahren zur Herstellung eines warmumform- und pressgehärteten Stahlbauteils mit scharf berandetem Übergangsbereich
DE102015101668A1 (de) * 2015-02-05 2016-08-11 Benteler Automobiltechnik Gmbh Zweifach fallendes Heiz- und Formwerkzeug sowie Verfahren zur Herstellung warmumgeformter und pressgehärteter Kraftfahrzeugbauteile
DE102015001408A1 (de) * 2015-02-06 2016-08-11 Eisenmann Se Anlage zum Formhärten von Werkstücken
DE102015016532A1 (de) * 2015-12-18 2017-06-22 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Werkzeuganordnung zur Integration in einer Fertigungslinie zur Fertigung eines Warmumformbauteils aus einer Platine, Fertigungslinie mit der Werkzeuganordnung und Verfahren zur Fertigung des Warmumformbauteils aus der Platine mit der Fertigungslinie
JP6548620B2 (ja) * 2016-09-06 2019-07-24 日本製鉄株式会社 熱間プレス装置
CN106893806B (zh) * 2017-04-25 2018-06-05 金华辉煌三联工具实业有限公司 一种导板全自动高频淬火工作站
CN110340225B (zh) * 2019-07-04 2020-09-25 浙江苒晟信息科技有限公司 一种管件模具生产用冲压装置
CN110883164B (zh) * 2019-11-28 2021-11-16 山东恒信科技服务有限公司 一种铝合金家具生产加工用快速压合装置
DE102021110702A1 (de) 2021-04-27 2022-10-27 Voestalpine Metal Forming Gmbh Verfahren und Vorrichtung zum Herstellen gehärteter Stahlbauteile mit unterschiedlich duktilen Bereichen

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EP2143808A1 (fr) * 2008-06-30 2010-01-13 Benteler Automobiltechnik GmbH Formage et durcissement à chaud partiels à l'aide d'un échauffement de lampes infrarouges
EP2233593A2 (fr) * 2009-03-27 2010-09-29 ThyssenKrupp Umformtechnik GmbH Procédé et station de déformage à chaud pour la fabrication de composants de formage en tôle d'acier durcis par presse
DE102010004081B3 (de) * 2010-01-06 2011-03-24 Benteler Automobiltechnik Gmbh Verfahren zum Warmformen und Härten einer Platine
JP2011179028A (ja) * 2010-02-26 2011-09-15 Sumitomo Metal Ind Ltd 成形品の製造方法
WO2012091346A2 (fr) * 2010-12-27 2012-07-05 Posco Procédé de fabrication d'une pièce à multiples propriétés physiques
DE102011102167A1 (de) * 2011-05-21 2012-11-22 Volkswagen Aktiengesellschaft Verfahren zur Herstellung eines Formbauteils mit mindestens zwei Gefügebereichen unterschiedlicher Duktilität und Erwärmungseinrichtung

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DE102007047314B4 (de) 2007-10-02 2015-12-31 Hfs Hotforming Solutions Gmbh Presswerkzeug zum Warmumformen oder/und Presshärten von Werkstücken aus Blech
DE102008034596A1 (de) * 2008-07-25 2010-02-04 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Herstellen von gehärteten Bauteilen aus Stahlblech
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DE19854057A1 (de) * 1998-11-24 2000-05-25 Innova Engineering Gmbh Vorrichtung zum Spritzgießen von Kunststofformteilen und Verfahren zum Herstellen einer solchen Vorrichtung
EP2143808A1 (fr) * 2008-06-30 2010-01-13 Benteler Automobiltechnik GmbH Formage et durcissement à chaud partiels à l'aide d'un échauffement de lampes infrarouges
EP2233593A2 (fr) * 2009-03-27 2010-09-29 ThyssenKrupp Umformtechnik GmbH Procédé et station de déformage à chaud pour la fabrication de composants de formage en tôle d'acier durcis par presse
DE102009018798A1 (de) * 2009-04-24 2009-10-29 Daimler Ag Vorrichtung zum Warmumformen eines Werkstückes, insbesondere von Metallblech
DE102010004081B3 (de) * 2010-01-06 2011-03-24 Benteler Automobiltechnik Gmbh Verfahren zum Warmformen und Härten einer Platine
JP2011179028A (ja) * 2010-02-26 2011-09-15 Sumitomo Metal Ind Ltd 成形品の製造方法
WO2012091346A2 (fr) * 2010-12-27 2012-07-05 Posco Procédé de fabrication d'une pièce à multiples propriétés physiques
DE102011102167A1 (de) * 2011-05-21 2012-11-22 Volkswagen Aktiengesellschaft Verfahren zur Herstellung eines Formbauteils mit mindestens zwei Gefügebereichen unterschiedlicher Duktilität und Erwärmungseinrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015193256A1 (fr) * 2014-06-16 2015-12-23 Autotech Engineering A.I.E. Formage à chaud et trempe dans une matrice
EP2957361A1 (fr) * 2014-06-16 2015-12-23 Autotech Engineering, A.I.E. Trempe dans outil de formage à chaud
US10350668B2 (en) 2014-06-16 2019-07-16 Autotech Engineering A.I.E. Hot forming die quenching

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Publication number Publication date
EP2931453A1 (fr) 2015-10-21
EP2931453B1 (fr) 2016-11-02
DE102012112334A1 (de) 2014-06-18

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