EP2907881A2 - Ligne moulée à chaud et procédé de fabrication de produits de tôle moulés à chaud - Google Patents

Ligne moulée à chaud et procédé de fabrication de produits de tôle moulés à chaud Download PDF

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Publication number
EP2907881A2
EP2907881A2 EP15154074.7A EP15154074A EP2907881A2 EP 2907881 A2 EP2907881 A2 EP 2907881A2 EP 15154074 A EP15154074 A EP 15154074A EP 2907881 A2 EP2907881 A2 EP 2907881A2
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EP
European Patent Office
Prior art keywords
heating
station
plate
line according
plate body
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.)
Granted
Application number
EP15154074.7A
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German (de)
English (en)
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EP2907881B1 (fr
EP2907881A3 (fr
EP2907881B2 (fr
Inventor
Dipl.-Ing. Frost (FH) Georg
Dipl.-Ing. Max Niesse
Dr. Jan Lackmann
Stefan Konrad
Dr. Hans-Gerd Lambers
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Benteler Automobiltechnik GmbH
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Benteler Automobiltechnik GmbH
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Application filed by Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
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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
    • 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
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/208—Deep-drawing by heating the blank or deep-drawing 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/24—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor being self-supporting
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/673—Quenching devices for die quenching
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2221/00—Treating localised areas of an article

Definitions

  • the invention relates to a thermoforming line with a heating station and a forming station for the production of hot-formed and in particular press-hardened sheet metal products from metal blanks and a method for the production of hot-formed sheet metal products.
  • Press hardening is a process for producing high-strength complex vehicle components with high manufacturing accuracy. It combines deep drawing with a heat treatment with the goal of increasing the strength in one process. This manufacturing process requires a relatively high outlay because it involves heating and subsequent defined cooling of the formed sheet metal products in addition to the forming. The individual sub-processes exert a significant influence on the component properties.
  • the heating of the metal blanks in series production is currently for the most part in passage ovens, especially roller hearth furnaces, by convection and thermal radiation. Chamber furnaces are also used.
  • Furnace heating is an established heating process that allows homogeneous heating regardless of geometry.
  • the furnace systems are usually heated electrically or with gas.
  • the temperatures required for hot forming are between 780 ° C to about 1,000 ° C for steel sheets.
  • the residence time in the furnace plant must be designed accordingly. This is technically complex and makes a relatively large amount of space necessary.
  • thermoforming line with an inductively heated heater counts, for example by the DE 10 2012 110 650 B3 to the state of the art.
  • a method and apparatus for conductive heating of metal sheets is in the DE 10 2006 037 637 A1 described. There, the metal sheet is heated by a gripper-heating system, via which the energy is introduced, placed in a press tool consisting of a lower tool and an upper tool and reshaped.
  • thermoforming line for producing a hot-formed and press-hardened sheet steel product, in particular a motor vehicle component of the prior art.
  • the thermoforming line has a tempering station, wherein in the tempering station locally different areas can be tempered to different temperatures.
  • the temperature control is carried out by conductive conditioning, wherein for this purpose Temperierplatten be used, which are interchangeable.
  • a heating device with a lower heating unit and an upper heating unit for heating a metal circuit board is further from the EP 2 216 417 A2 out.
  • Each heating unit has a heatable plate coming into contact with the board.
  • the heating plate of the lower and / or the upper heating unit has a plurality of heating segments, which are arranged in a predetermined grid relative to each other and which are displaceable relative to each other in the plane defined by a contact surface between the heating segments and the board.
  • the heating segments each have an integrated heating element in the form of a resistance heater.
  • the hot forming line according to the invention for the production of hot-formed and press-hardened sheet metal products from metal blanks comprises a heating station and a forming station.
  • the heating station has a lower tool and an upper tool, between which a metal plate is accommodated for heating.
  • the heating or heating of a metal plate in the heating station takes place conductively by indirect or indirect resistance heating.
  • the heat is generated outside the metal plate and passes through its surface in the metal plate itself.
  • the lower tool and / or the upper tool has an electrical resistance heating with at least one surface heating element.
  • the heat transfer from the surface heating element to the metal plate takes place by heat conduction as a result of the at least indirect contact between the surface heating element and the metal plate to be heated.
  • the surface heating element is a heating plate with a plate body of an electrically conductive material, wherein the plate body is formed as a heating conductor.
  • the plate body itself forms directly the heating conductor.
  • the heating conductor defines a current path in the plate body. The heating element converts electrical energy into heat.
  • the heating conductor is preferably configured to release from it the proper amount of heat for heating the metal board, which is supplied by heat transfer to the metal boards.
  • a heating conductor is formed in the plate body through at least one slot extending across the thickness of the plate body.
  • the heating element is formed by at least one horizontal slot in the plate body.
  • the horizontal slot extends almost over the entire length or width of the plate body. The electrical line or the current path takes place over the region of the plate body which is not separated by the slot.
  • the heating conductor is configured through the slot guide in the plate body.
  • the heating element is wound several times.
  • the heating element may meander or spiral.
  • the heating conductor has a length which is longer than the shortest distance between the electrical contacts of the heating conductor. It can also be arranged or designed in a suitable heating circuit in a hotplate more than one heating element.
  • the metallic heating conductor materials also include chromium-nickel alloys (CrNi). These can be used up to 1,200 ° C. Furthermore, ferritic chromium-iron-aluminum alloys (CrFeAl) can be used for temperatures up to 1400 ° C.
  • the ceramic heating conductor materials include silicon carbide (SiC). This is usually used up to temperatures of 1,600 ° C. Molybdenum disilicide (MoSi2) is also available for applications up to 1,850 ° C.
  • a ceramic heating conductor material in the form of silicon-infiltrated silicon carbide is considered to be advantageous.
  • This is silicon carbide with embedded in the crystal metallic silicon.
  • This heating conductor material can be used for operating temperatures of over 1,300 ° C. Furthermore, it has a very high compressive strength of about 2000 MPa, even at high temperatures.
  • the heating conductor material is characterized by its good corrosion resistance and wear resistance. Furthermore, the high heat capacity and the low thermal expansion are advantageous.
  • the heating plate is provided on its contacting the metal plate heating surface with an electrical insulation.
  • This alternative aspect provides to avoid direct contact between the heating plate and the metal plate by interposing an electrical insulation.
  • the electrical insulation can be realized by a coating of the heating surface of the heating plate or a separate insulating layer or plate.
  • the electrical current flow can be maintained even during the closing time or phase and thus during the heating of a metal plate.
  • the resistance heating on a number of selectively controllable, for example, on and / or turn-off, surface heating on. This makes it possible to heat different areas of the metal board or not to heat areas of the metal board.
  • the cross section of the heat conductor varies over its length.
  • the heating conductor varies in its width.
  • a temperature or heating control is possible. Since the resistance in the heating conductor changes in proportion to its cross section, the desired amount of heat and the temperature in the course or over the length of the heat conductor or in sections of the heating element can be adjusted via the variation of the cross section.
  • the forming and press hardening can be carried out in one tool.
  • a two-stage cooling or a two-stage hardening process for this purpose, the heated metal plate in the forming station transformed and already cooled in the particular actively cooled forming station.
  • the setting of the final temperature and / or the holding of the formed sheet metal product can be realized in a second cooling stage.
  • the forming station is followed by a separate cooling station.
  • the movement and the clock control can be further improved by the fact that the heating station and / or the forming station and / or the cooling station of the thermoforming line are mounted in a machine frame.
  • a station or all stations are necessarily mounted elastically within the machine frame.
  • the flexible storage of the stations or moving tools of the stations extends the closing time or heating time in the heating of the metal plate and / or the forming and cooling in the forming stage and / or in the cooling stage. In particular, this results in a contact time between the upper tool and the lower tool which is extended relative to the cycle time.
  • a downstream cooling station is then carried out a further cooling or holding the sheet metal product at the cooling temperature.
  • the cooling can be done for example in a plunge pool.
  • cooling may also be carried out in a press hardening tool or a contact cooling station. This is in particular made of light metal with a high thermal conductivity and has cooling channels for Duchtechnisch a cooling medium.
  • FIG. 12 Another variant is by the FIG. 12 shown, in which a plurality of spirally extending heating plates 8 are arranged side by side, wherein the heating conductor 11 of each heating plate 8 is formed in each case by a slot 10.
  • FIG. 2 shows the heating plate 8 with its side edges 14, 15 enclosing enclosure 16.
  • the enclosure 16 is used for mechanical stabilization and / or the thermal insulation of the heating plate. 8
  • a load distribution plate 19, 20 is provided both in the lower tool 3 and in the upper tool 4.
  • the upper insulating plate 18 forms a heat insulation for the back 21 and the side edges 14, 15 of the or the heating plates 8.
  • the metal plate 6 to be heated for the heating process rests on the lower insulating plate 17 of the lower tool 3.
  • the directed to the metal plate 6 heating surface 22 of the heating plates 8 is separated by an electrical insulation in the form of an insulating layer 23 of the metal plate 6.
  • the electrical insulating layer 23 may be designed as a coating of the heating surfaces 22 of the heating plate 8.
  • the electrical Insulating layer 23 may be embodied as an insulating layer of an electrical insulating material.
  • the heating station 1 as in the FIG. 4 shown, both in the lower tool 3 and in the upper tool 4, an electrical resistance heater 7 with surface heating elements in the form of heating plates 8.
  • both the heating surface or the heating surfaces 22 of the upper heating plates 8 and the heating surfaces 22 of the lower heating plates 8 are provided with a non-puncture insulating layer 23.
  • the lower insulating plate 17 receives the heating plates 8 and forms a thermal insulation of the back sides 21 and the side edges 14, 15 of the heating plates 8.
  • the heating station 1 in the embodiment according to FIG. 4 is suitable due to its design with a double resistance heater 7 in particular for the heating of thicker metal blanks 6.
  • the different zones or areas are in the FIG. 13b ) with> Ac3, ⁇ Ac1 and> Ac1.
  • a metal plate 6 is heated to a temperature above the austenitizing temperature Ac3.
  • the heating plate 8 in this zone has a higher temperature (overtemperature) compared to the target temperature of the metal plate 6.
  • the excess temperature is preferably> 1050 ° C, but in particular not more than 1350 ° C.
  • a temperature below the austenitizing temperature Ac1 and in the area or zone> Ac1 a temperature above the austenitizing temperature Ac1 is achieved.
  • the heating plate 8 has in the zone ⁇ Ac1 a temperature of for example ⁇ 800 ° C, whereas in the zone> Ac1 it has a temperature of> 800 ° C, but preferably a maximum of 950 ° C.
  • the heating station 1 as shown by FIG. 14 comprises a lower tool 3 and an upper tool 4, wherein in the upper tool 4 surface heating elements in the form of heating plates 8 are provided.
  • FIG. 14c The cross-sectional view of FIG. 14c ), who cut the BB through the Figure 14a ) shows that the thickness of a heating conductor 11 varies. Edge portions 32 of the heat conductor 11 are thicker than the central portion 33 of the heat conductor 11. Since the resistance of the heat conductor 11 in the middle section with a smaller cross-section is greater than in the edge portions 32 with a larger cross-section of the heating element 11 is heated in the edge portions 32 less. Accordingly, edge regions 34 of the metal plates 6 are heated less strongly by this heating conductor configuration. As a result, no complete curing occurs at the edge portions 34 of the hot-formed and press-hardened components from the metal blanks 6.
  • a heater 27 connected upstream of the heating station 1 is provided outside the synchronous drive unit 26, a heater 27 connected upstream of the heating station 1 is provided. Here, a homogeneous preheating of the metal plates before they are transferred to the heating station 1.
  • the metal plate 6 is then heated in the heating station 1 to forming temperature and then transferred by a not shown here board transfer system in the forming station 2.
  • the metal plate 6 can be heated homogeneously, that is, in total to the same forming temperature. It is possible, as described above, also a partially different heating of a metal plate 6.
  • the metal plate 6 is hot-formed.
  • the deformed metal plate 6 can be at least partially cooled and hardened.
  • a further cooling station 28 downstream of the forming station 2 is integrated.
  • the still hot sheet metal product formed in the forming station 2 from the metal plate 6 is transferred by means of a transfer system, also not shown here, into the cooling station 28 and further hardened here either by further cooling.
  • the cooling station 28 opens and closes in time, preferably synchronously with the heating station 1 and the forming station. 2
  • a variant of a hot forming line in which two heating stations 1a and 1b, a forming station 2 and a cooling station 28 are arranged within a synchronous drive unit 26, shows the illustration of FIG. 9 .
  • the heating station 1a a particularly homogeneous heating of a metal plate to a certain preheating temperature takes place.
  • the metal plate is then transferred to the heating station 1 b and partially heated there further in certain areas or partially cooled by conditioning with non-heated heating plates 8.
  • the temperature-controlled that is, set in the temperature set metal plate is transferred to the forming station 2 and formed into a sheet metal product.
  • trimming operations such as punching operations on the sheet metal product can be made. Transfer systems then transfer the sheet product into the cooling station 28.
  • further perforation or trimming operations are carried out and the sheet metal product is press-hardened.
  • FIG. 10 shows a technical schematic representation of a heating station 1, a forming station 2 and a cooling station 28, which are arranged together in a synchronous drive unit 26.
  • the upper tools and lower tools of heating station 1, forming station 2 and cooling station 28 are moved relative to each other.
  • the heating station 1 and the forming station 2 and the cooling station 28 are elastically mounted on spring elements 30 in a machine frame 29 of the synchronous drive unit 26 shown only schematically here.
  • the FIG. 10a shows the synchronous drive unit 26 in the open position. Accordingly, the heating station 1, the forming station 2 and the cooling station 28 are opened.
  • FIG. 17 schematically an electrical resistance heating of a heating station is shown.
  • the resistance heating has a surface heating element in the form of a heating plate 35 both in the lower tool (not shown here) and in the upper tool.
  • a heating plate 35 has a plate body 36 made of an electrically conductive material.
  • the plate body 36 is separated by a horizontal slot 37 over most of its length. Through the horizontal slot 37, the plate body 36 is formed as a heating conductor 38, which defines a current path.
  • the current path is indicated by the arrows P. It can be seen that the slot 37 does not completely separate the plate body 36, so that at the end 39 of the plate body 36 it is not interrupted.
  • the slot 37 may be filled with an electrical insulating material.
  • FIG. 18 An alternative embodiment of a heating plate 40 is shown in FIG FIG. 18 shown.
  • the plate body 41 of the heating plate 40 has two superimposed plate body layers 42, 43. Between the plate body layers 42, 43 an electrical insulation 44 is provided. The electrical insulation 44 extends over the substantial part of the length L of the plate body 41, so that they are partially isolated from each other electrically.
  • a contact portion 46 is formed at the end 45 of the plate body 41.
  • the plate body layers 42, 43 contact each other and are electrically conductive with each other connected.
  • a U-shaped heating conductor 47 is formed in the plate body 41. Again, the current path is indicated by the arrows P.
  • the shortest distance between the electrical contacts is marked k4.
  • the heating conductor 38 as well as the heating conductor 47 have a length which is longer than the shortest distance k4 between the electrical contacts "+" and "-".
  • the metal blanks are heated in a heating station 1 to forming temperature, then removed from the heating station 1 and transferred to the forming station 2 within a time T1 of less than 3 seconds.
  • the transformation takes place to the sheet metal product.
  • the hot sheet product is cooled at a cooling rate which is above the critical cooling rate of the metal material and cured in this way. The cooling takes place in a time T K of less than or equal to ( ⁇ ) 10 seconds, in particular in a time between 3 and 6 seconds.
  • the sheet product is cooled to a temperature T E of less than or equal to ( ⁇ ) 250 ° C.
  • the transfer of the erKindlemten metal plate from the heating station 1 in a downstream cooling station 28 takes place in a time t T2 of a maximum of 3 seconds.
  • An advantageous aspect of the inventive method provides that a heating plate 8 of the heating station 1 is at least partially heated to a plate temperature T P between 1050 ° C and 1350 ° C.
  • a metal plate is then at least partially heated in the heating station 1, specifically from an initial temperature T1 to a target temperature T2, in that the metal plate comes into contact with the heating plate 8 of the upper and / or lower tool.
  • the target temperature T2 is between 850 ° C and 900 ° C.
  • the heating of the metal plate to the target temperature T2 takes place in a time t E of less than or equal to ( ⁇ ) 10 seconds, in particular in a time between 4 and 6 seconds.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
EP15154074.7A 2014-02-07 2015-02-06 Ligne moulée à chaud et procédé de fabrication de produits de tôle moulés à chaud Active EP2907881B2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014101539.8A DE102014101539B9 (de) 2014-02-07 2014-02-07 Warmformlinie und Verfahren zur Herstellung von warmumgeformten Blechprodukten

Publications (4)

Publication Number Publication Date
EP2907881A2 true EP2907881A2 (fr) 2015-08-19
EP2907881A3 EP2907881A3 (fr) 2015-09-30
EP2907881B1 EP2907881B1 (fr) 2019-04-24
EP2907881B2 EP2907881B2 (fr) 2021-11-10

Family

ID=52462183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15154074.7A Active EP2907881B2 (fr) 2014-02-07 2015-02-06 Ligne moulée à chaud et procédé de fabrication de produits de tôle moulés à chaud

Country Status (4)

Country Link
US (1) US20170066030A1 (fr)
EP (1) EP2907881B2 (fr)
CN (2) CN104894352B (fr)
DE (1) DE102014101539B9 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
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EP2993241A1 (fr) * 2014-08-26 2016-03-09 Benteler Automobiltechnik GmbH Procede et presse pour fabriquer au moins en partie des composants de tole durcis
WO2017134259A1 (fr) * 2016-02-04 2017-08-10 Voestalpine Stahl Gmbh Système de fabrication de pièces en acier trempées et procédé de trempe
EP3276012A1 (fr) * 2016-07-29 2018-01-31 Benteler Automobiltechnik GmbH Station de chauffage avec conducteur chauffant en gaine
WO2018039789A1 (fr) 2016-08-30 2018-03-08 Magna International Inc. Outil muni d'un dispositif de chauffage destiné à former des pièces présentant des propriétés personnalisées
WO2019120857A1 (fr) * 2017-12-19 2019-06-27 Volkswagen Aktiengesellschaft Système de presse ainsi que procédé de fabrication d'une pièce en tôle d'acier formée à chaud et trempée à la presse

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DE102015101668A1 (de) * 2015-02-05 2016-08-11 Benteler Automobiltechnik Gmbh Zweifach fallendes Heiz- und Formwerkzeug sowie Verfahren zur Herstellung warmumgeformter und pressgehärteter Kraftfahrzeugbauteile
DE102015106298B4 (de) * 2015-04-24 2017-01-26 Semikron Elektronik Gmbh & Co. Kg Vorrichtung, Verfahren und Anlage zur inhomogenen Abkühlung eines flächigen Gegenstandes
DE102015215179A1 (de) * 2015-08-07 2017-02-09 Schwartz Gmbh Verfahren zur Wärmebehandlung und Wärmebehandlungsvorrichtung
DE102015121842B4 (de) 2015-12-15 2018-11-29 Benteler Automobiltechnik Gmbh Verfahren zum Betreiben einer Temperierstation
DE102015122796A1 (de) * 2015-12-23 2017-06-29 Benteler Automobiltechnik Gmbh Warmformlinie zur Herstellung warmumgeformter und pressgehärteter Stahlblechprodukte sowie Verfahren zu dessen Betreibung
DE102016113403B4 (de) 2016-07-20 2018-10-18 Benteler Automobiltechnik Gmbh Temperierstation sowie Verfahren zum Betreiben der Temperierstation
DE102017113592B4 (de) 2016-07-20 2018-12-06 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung formgehärteter Fahrzeugbauteile mit unterschiedlichen mechanischen Eigenschaften und Temperiervorrichtung
CN107052172B (zh) * 2017-06-12 2019-08-09 中船黄埔文冲船舶有限公司 一种双曲度板加工方法及该方法使用的火工工装
ES2907102T3 (es) * 2019-08-14 2022-04-21 Automation Press And Tooling Ap & T Ab Estación de calentamiento intermedia
CN110773630B (zh) * 2019-11-05 2022-02-11 山东钢铁集团日照有限公司 一种解决不规则坯料导电加热温度不均匀的方法
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CN104894352A (zh) 2015-09-09
CN108486325A (zh) 2018-09-04
US20170066030A1 (en) 2017-03-09
CN104894352B (zh) 2018-04-24
EP2907881B1 (fr) 2019-04-24
EP2907881A3 (fr) 2015-09-30
DE102014101539B4 (de) 2016-06-16
DE102014101539B9 (de) 2016-08-11
EP2907881B2 (fr) 2021-11-10

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