EP1426454A1 - Procédé de fabrication d'une piéce de forme avec au moins deux régions de structure de ductilité differente et four continu associé - Google Patents

Procédé de fabrication d'une piéce de forme avec au moins deux régions de structure de ductilité differente et four continu associé Download PDF

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Publication number
EP1426454A1
EP1426454A1 EP03026402A EP03026402A EP1426454A1 EP 1426454 A1 EP1426454 A1 EP 1426454A1 EP 03026402 A EP03026402 A EP 03026402A EP 03026402 A EP03026402 A EP 03026402A EP 1426454 A1 EP1426454 A1 EP 1426454A1
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EP
European Patent Office
Prior art keywords
temperature
zone
continuous furnace
furnace
area
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.)
Withdrawn
Application number
EP03026402A
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German (de)
English (en)
Inventor
Jürgen Krogmeier
Patrick Dr. Reinhold
Johannes Dr. Böke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Benteler Automobiltechnik GmbH
Original Assignee
Benteler Automobiltechnik 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
Application filed by Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
Publication of EP1426454A1 publication Critical patent/EP1426454A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path
    • 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
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F27B9/021—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces having two or more parallel tracks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
    • F27B9/045—Furnaces with controlled atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
    • F27B9/2469—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollable bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/36—Arrangements of heating 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
    • C21D2221/00—Treating localised areas of an article
    • 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
    • C21D2221/02—Edge parts

Definitions

  • the invention relates to a method for producing a molded component at least two structural areas of different ductility from a semi-finished product made of hardenable steel with heating in a continuous furnace and one Hardening process according to the preamble of claim 1 and a method for Production of a molded component with at least two areas different Ductility from a semi-finished product made of hardened steel with heating in one Continuous furnace according to the preamble in claim 7 and a continuous furnace Heating of metallic workpieces according to the preamble of claim 9.
  • Example chassis components such as handlebars or cross members or structural components such as door impact beams, B-pillars, struts or bumpers, with over the molded component distribute consistent material properties. This happens through a complete heating of the molded components with a subsequent hardening that can be followed by a starting process for compensation.
  • certain areas have a high strength, other areas have a high strength Relative to this, have higher ductility.
  • In addition to the reinforcement by Additional sheets or the joining of parts of different strength is it is already known to heat a component in this way treat that there are local areas of higher strength or higher ductility having.
  • DE 197 43 802 C2 shows a method, a molded component for Manufacture automotive components with areas of different ductility, by only partially heating an output board before or after pressing or with a previous homogeneous heating in the areas with desired higher ductility is specifically reheated. This is preferably done partial heating inductive.
  • B-pillar which also has areas of different strength.
  • the B-pillar is manufactured in Thermoforming process, starting from a blank or a preformed longitudinal profile austenitized in an oven and then in is reshaped / hardened in a cooled tool. Large areas can be used in the oven Areas of the workpiece are insulated from the effects of temperature, whereby in these areas the austenitizing temperature is not reached and accordingly, there is no martensitic structure in the tool during hardening.
  • DE 3441 338 A1 describes a method for heat treatment metallic workpieces using a continuous or push-through furnace and an apparatus for performing this method is disclosed.
  • it can be a Continuous furnace act in which each treatment chamber as a rotary cycle furnace intermittently rotatable oven hearth is formed.
  • the present invention is therefore based on the object of a method for Manufacture of a metallic molded component with at least two structural areas different ductility and a suitable continuous furnace for heating to further develop metallic workpieces so that they can be used for Are suitable for mass production.
  • This object is achieved by the invention in the characterizing part of claim 1 described method. Accordingly, it goes through a manufacturing process a molded component with at least two structural areas of different ductility from a semi-finished product made of hardenable steel with heating in one Continuous furnace and a hardening process, a board or a preformed component at least two at the same time during transport through a continuous furnace zones of the continuous furnace arranged next to one another in the direction of flow different temperature levels.
  • Zone 1 of the continuous furnace is open set a temperature A and another zone 2 to a temperature B which is higher than temperature A. This heats up the semi-finished product in the areas in which it passes through the continuous furnace in zone 1 to temperature A and in Areas where it passes through zone 2 at temperature B.
  • the semi-finished products heated to different degrees in this way using a thermoforming process and / or subjected to the hardening process.
  • a thermoforming process and / or subjected to the hardening process.
  • the hardening process arises in the before area 1 of the component heated to temperature A in relation to that Temperature B heated area 2 of the component more ductile structure and in area 2 a solid or high-strength structure.
  • Which temperature is chosen for the respective zone of the furnace depends on the desired properties of the component. If, for example, the base of a B-pillar for an automobile is to be ductile in relation to the rest of the B-pillar, a preformed component is introduced into the continuous furnace in such a way that it corresponds to area 1, which after the final shaping represents the B-pillar base to lie in zone 1 of the furnace. The rest of the component, which should be as high-strength as possible after the final shaping, extends over zone 2 of the continuous furnace. The temperature A in zone 1 is now set to a temperature below the AC 1 temperature of the material. As a result, there is no structural change in area 1 during transport through the furnace.
  • the unhardened initial structure remains in area 1 of the component and thus in the column base.
  • the temperature B in zone 2 of the furnace is set to a temperature above AC 3 in order to obtain the most complete structural transformation of the remaining component during transport through the continuous furnace.
  • a solid or high-strength structure is established over the rest of the B-pillar.
  • the column base is ductile.
  • the temperature A in zone 1 of the furnace is set to a temperature above AC 1 but below AC 3 and the temperature B in zone 2 of the furnace is set to a temperature above AC 3 in order to achieve different strength requirements.
  • the component undergoes a partial structural change in area 1, with which it passes through zone 1, in area 2, with which it passes through zone 2, the structure changes almost completely. A subsequent hardening process therefore results in a mixed structure in area 1 and a structure that is firmer in area 2.
  • the component has already received its final shape and adapts to the Heating process in the continuous furnace can only be followed by a hardening process heating of zone 1 of the continuous furnace can be dispensed with entirely.
  • the Temperature A is then roughly the same as the ambient temperature of the furnace match.
  • the component is only partially in zone 2 of the furnace in area 2 heated in which it should also be hardened.
  • thermoforming process If the component has not yet reached its final shape and a further thermoforming process may follow the heating process, apart from the requirements of the hardening process, the conditions of the thermoforming process must also be taken into account. Since the material of the material flows during the thermoforming process, it is particularly advantageous to set temperatures A and B as far apart as required for the desired structure to be finally set by the hardening process, but at the same time as narrow as possible within the limits of the ZTU diagram of the material possible to be placed next to each other in order to optimize the flow properties of the material.
  • a B-pillar for example, which is only preformed and which should have an unhardened foot but a firm or high-strength structure over the rest of its area, it is therefore advisable to set the temperature A in zone 1 of the furnace, in which the area of the preformed component, which will later be the column base, to a temperature as close as possible to below AC 1 .
  • Temperature B in zone 2 of the furnace, in which the rest of the component is located, is set to a temperature as close to AC 3 as possible.
  • the component is then thermoformed and hardened.
  • the B-pillar is end-shaped and has a relatively ductile base and a solid or high-strength structure in the rest of the area.
  • thermoforming step is preferably carried out at the same time as the hardening Forming tool instead.
  • the method according to the invention can also be used to process a semi-finished product made of hardened steel to produce a molded component with at least two areas of different ductility with heating in a continuous furnace.
  • the peculiarity here is that the semi-finished product is already hardened over its entire length.
  • the semifinished product can be a board or a preformed component that has already been preformed in one or more steps.
  • the preforming can be cold-forming steps.
  • the semi-finished product then simultaneously passes through at least two zones of the continuous furnace with different temperature levels which are arranged next to one another in the direction of the transit during the transport through a continuous furnace.
  • the semi-finished product is introduced into the furnace in such a way that it comes to rest in zone 1 of the continuous furnace with area 1, which should have a solid or high-strength structure in the finished end component.
  • Zone 1 is set to room temperature or to a temperature below AC 1 .
  • Area 2 of the component which is to have a ductile structure in the finished end component, passes through the furnace in zone 2.
  • Zone 2 is set to a higher temperature than zone 1, preferably to a temperature above AC 1 , so that area 2 is soft-annealed to towards a complete structural transformation. This results in a more ductile structure in area 2 than in area 1.
  • This furnace heating is then only followed by a hot forming and / or cooling process which does not reach the critical cooling rate which would lead to a renewed hardening of area 2.
  • This alternative method is suitable, for example, for dual-phase steels or Steel grades that have already been hardened in the coil.
  • Oven heating in a protective gas atmosphere is part of the prior art to carry out a reaction of the material with oxygen as possible prevention. It is therefore also with the oven heating described here advantageous to carry them out under a protective gas atmosphere. Depending on Temperature control, material properties and component requirements can Heating can also be carried out without protective gas.
  • the number of zones through which the component is guided is arbitrary and depends on the number of areas that are in each other in the finished part should receive a different structure.
  • the inventive method makes itself the medium that has already been tried and tested in mass production Use oven heating.
  • the continuous furnace as such is already on the Mass production adjusted.
  • the main advantage of the invention is that Partially different heating is now easy and reliable in to be able to integrate the existing process chain.
  • the continuous furnace according to the invention for heating metallic workpieces is characterized by the fact that it has at least two in the direction of flow adjacent zones 1 and 2 is provided. Both zones are separated from each other by a thermally insulating partition so that the The workpiece passing through the furnace is located both in zones 1 and 2 is located in areas in Zone 2. There is a separate one in both zones Temperature control possible.
  • the type of continuous furnace is not important here. It can be both a roller hearth continuous furnace act, in which the workpieces on rollers the furnace can be transported, as well as a push-through furnace, in which a Workpiece batch from the impact of the subsequent workpiece batch by the Oven is pushed.
  • the component to be heated can lie directly on the rollers or are on a product carrier such as a frame.
  • the Oven according to the invention can be designed as a rotary hearth or rotary cycle oven, at which the direction of flow is not linear, but curved. The important thing is that the furnace with at least one parallel to the direction of flow Thermally insulating partition is provided, which in at least two in the oven Flow direction divided adjacent zones, which are separated are controllable from each other.
  • the partition does not completely separate the two zones, only to the extent that a component can be passed below the partition in such a way that it comes to rest in both zones 1 and 2 in zones.
  • the partition ends as close as possible to the surface of the component.
  • both a thermally insulating partition on the furnace ceiling and on the furnace floor is attached, between which a workpiece can be transported continuously can. This enables a three-dimensional component with a Elevation at the desired location in two differently heated Separate areas.
  • the partition is transverse to the direction of the furnace is removably attached. This is done by a clever arrangement of the Heating elements and / or variably attachable heating elements allows.
  • the workpieces are on a product carrier, it is particularly advantageous if on the respective goods carrier parallel to the direction of the furnace thermally insulating partition is attached to the oven with the merchandise support passes.
  • the furnace itself can be one or more thermally insulating Partitions included, so that the oven in total again in at least two Zones is divided.
  • the partition wall ensures that Temperature on the partition wall side to the cooler zone roughly the same Level as the temperature in the cooler zone kept to a to avoid temperature-increasing heat radiation from the warmer zone.
  • the transition area from Zone 1 to Zone 2 can be varied by varying the Partition in terms of width and insulation. This allows the Temperature gradient and thus the structure transition in the workpiece from area 1 to Range 2 can be set.
  • FIG. 1 shows an oven 1 which is divided into two zones 1a and 1b by a partition 2.
  • a B-pillar 3 which lies with an area 3a, namely the column base, in zone 1a and with its area 3b, that is the remaining pillar, in zone 1b.
  • the B-pillar 3 is made of a hardenable steel with an AC 1 temperature of 740 ° C and an AC 3 temperature of 850 ° C and is in its area 3a by a temperature setting in zone 1a of about 700 ° C to one Temperature of about 700 ° C and in its area 3b heated to a temperature of about 950 ° C to about 950 ° C by a temperature setting in zone 1b.
  • FIG. 2 shows an oven 4 according to the invention with one on the oven ceiling 4a and one partition 5 and 5a attached to furnace bottom 4b in the direction of passage.
  • the arrow indicates the direction of rotation of the rollers 6.
  • the circuit board 7 is therefore located both in zone 4c and in zone 4d of the furnace 4.
  • Oven 4 has a cooler atmosphere than in Zone 4d.
  • the partitions 5 and 5a are insulated on the side facing zone 4c so that a temperature-increasing heat radiation from zone 4d into zone 4c if possible is avoided.
  • the circuit board 7 heats up in its regions 7a and 7b different levels.
  • FIG. 3 shows a furnace 8 according to the invention in the direction of flow, the one Goods carrier 11 passes through with a component 12 with height extension.
  • the arrow gives the direction of rotation of the rollers 10.
  • the furnace 8 has a partition 9, which is attached to the furnace ceiling 8a and a partition 9b, which is on the furnace floor 8d is attached.
  • the thermal insulation of zones 8b and 8c is due to the Partitions 9, 9a and 9b reached.
  • the partition 9a is on the goods carrier 11 fastened and passed through the oven 8 with the goods carrier 11.
  • the goods carrier 11 must be transported through the oven 8 to the goods carrier 11 so that there are no gaps between the moving partitions 9a arise.
  • a component 12 with a vertical extension can be so precisely insert into zone 8c of the furnace 8 where in the finished component 12 a ratio to the rest of the component 12 more ductile structure is to be achieved.
  • FIG 4 shows a furnace 13 with a partition 14 on the furnace ceiling 13a and three partition walls 14a, 14b, 14c fastened to the furnace bottom 13b, between which Pass through rollers 15 and a board 16 transported on these rollers 15.
  • the Dashed lines 16a and 16b indicate the contour of a not shown Component with height extension.
  • the furnace 13 for each zone is provided with a feed line 18 and 18a provided through which nitrogen is supplied to the furnace atmosphere.
  • the partition 14 can be moved to the indicated positions 19 and 19a.
  • the heating elements 17 on the furnace ceiling 13a to respective displacement positions 19 and 19a interrupted.
  • the heating elements 17a on the furnace floor are separated anyway by the partitions 14a, 14b, 14c executed. Due to the variably attachable partition 14, the furnace 13 is flexible and use it for different components.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Tunnel Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP03026402A 2002-12-03 2003-11-19 Procédé de fabrication d'une piéce de forme avec au moins deux régions de structure de ductilité differente et four continu associé Withdrawn EP1426454A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10256621A DE10256621B3 (de) 2002-12-03 2002-12-03 Verfahren zur Herstellung eines Formbauteils mit mindestens zwei Gefügebereichen unterschiedlicher Duktilität und Durchlaufofen hierfür
DE10256621 2002-12-03

Publications (1)

Publication Number Publication Date
EP1426454A1 true EP1426454A1 (fr) 2004-06-09

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ID=32010501

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Application Number Title Priority Date Filing Date
EP03026402A Withdrawn EP1426454A1 (fr) 2002-12-03 2003-11-19 Procédé de fabrication d'une piéce de forme avec au moins deux régions de structure de ductilité differente et four continu associé

Country Status (3)

Country Link
US (2) US7540993B2 (fr)
EP (1) EP1426454A1 (fr)
DE (1) DE10256621B3 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005032113B3 (de) * 2005-07-07 2007-02-08 Schwartz, Eva Verfahren und Vorrichtung zum Warmumformen und partiellen Härten eines Bauteils
EP2110448A2 (fr) 2008-04-17 2009-10-21 Schwartz, Eva Procédé et four à passage continu destinés au chauffage de pièces à usiner
EP2336374A1 (fr) 2009-12-16 2011-06-22 Schwartz, Eva Procédé et dispositif destinés au chauffage et au refroidissement partiel de pièces usinées dans un four à passage continu
WO2013000001A1 (fr) 2011-06-30 2013-01-03 Ebner Industrieofenbau Gesellschaft M.B.H. Procédé de réchauffement d'un élément façonné pour une trempe à la presse effectuée par la suite et four continu destiné au réchauffement par endroits d'un élément façonné préchauffé à une température prédéfinie à une température plus élevée
US8980020B2 (en) 2009-09-01 2015-03-17 Thyssenkrupp Steel Europe Ag Method and device for producing a metal component
CN107552622A (zh) * 2016-06-30 2018-01-09 福特全球技术公司 用于热冲压车辆部件的加热炉组件和方法
WO2018109034A1 (fr) * 2016-12-15 2018-06-21 Voestalpine Metal Forming Gmbh Procédé de fabrication de pièces en tôle d'acier durcies localement

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005001829B4 (de) * 2005-01-14 2009-05-07 Audi Ag Verfahren zum Umformen einer Platine
SE529299C2 (sv) * 2005-12-27 2007-06-26 Aga Ab Förfarande för att justera hårdheten hos en skivliknande metallprodukt
CA2643824C (fr) * 2006-04-13 2013-01-22 Airbus Deutschland Gmbh Procede de traitement thermique d'un profile, dispositif de traitement thermique d'un profile et profile
DE102007012180B3 (de) * 2007-03-14 2008-06-05 Andreas Breloer Verfahren zur Wärmebehandlung von Halbzeugen aus Metall
DE102007057855B3 (de) * 2007-11-29 2008-10-30 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines Formbauteils mit mindestens zwei Gefügebereichen unterschiedlicher Duktilität
DE102008021492B3 (de) * 2008-04-29 2009-07-23 Benteler Automobiltechnik Gmbh Verfahren zum Nacherwärmen von gehärteten Bauteilen
DE102008027460B9 (de) 2008-06-09 2012-12-06 Voestalpine Stahl Gmbh Verfahren zum Herstellen eines Stahlblechbauteils mit Bereichen unterschiedlicher Duktilität
DE102008030279A1 (de) * 2008-06-30 2010-01-07 Benteler Automobiltechnik Gmbh Partielles Warmformen und Härten mittels Infrarotlampenerwärmung
DE102008062270A1 (de) * 2008-12-15 2010-06-17 GM Global Technology Operations, Inc., Detroit Vorrichtung und Verfahren zum Härten metallischer werkstücke
CN102482741B (zh) 2009-08-06 2013-10-16 新日铁住金株式会社 辐射传热加热用金属板及其制造方法、以及具有不同强度部分的金属加工件及其制造方法
DE102009050533A1 (de) * 2009-10-23 2011-04-28 Thyssenkrupp Sofedit S.A.S Verfahren und Warmumformanlage zur Herstellung eines gehärteten, warm umgeformten Werkstücks
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US20040112485A1 (en) 2004-06-17

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