EP2791372A1 - Procédé et dispositif pour le durcissement partiel de composants en tôle - Google Patents

Procédé et dispositif pour le durcissement partiel de composants en tôle

Info

Publication number
EP2791372A1
EP2791372A1 EP12780705.5A EP12780705A EP2791372A1 EP 2791372 A1 EP2791372 A1 EP 2791372A1 EP 12780705 A EP12780705 A EP 12780705A EP 2791372 A1 EP2791372 A1 EP 2791372A1
Authority
EP
European Patent Office
Prior art keywords
component
temperature
radiator
furnace
carrier
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
EP12780705.5A
Other languages
German (de)
English (en)
Other versions
EP2791372B1 (fr
Inventor
Dieter Hartmann
Roland Ziegler
Tobias HÄGELE
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.)
Voestalpine Metal Forming GmbH
Original Assignee
Voestalpine Metal Forming 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=47115879&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2791372(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voestalpine Metal Forming GmbH filed Critical Voestalpine Metal Forming GmbH
Publication of EP2791372A1 publication Critical patent/EP2791372A1/fr
Application granted granted Critical
Publication of EP2791372B1 publication Critical patent/EP2791372B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0494—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing involving a localised treatment
    • 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
    • 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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
    • 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
    • C21D2221/00—Treating localised areas of an article
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys

Definitions

  • the invention relates to a method for the partial hardening of sheet metal components according to the preamble of claim 1 and an apparatus therefor according to the preamble of claim 10.
  • a planar board is heated in accordance with the Ac 3 temperature of the respective steel composition, held there for a desired time and then formed by a single Umformhubes in a Werk ⁇ tool and characterized in that the tool is cooled simultaneously with a cooling rate, the above the critical hardening speed is cooled and hardened.
  • the board is shaped already to ferti ⁇ gen component, then heating the finished component to a Tem ⁇ temperature above the Ac 3 temperature of each steel composition and, if necessary, maintained at this temperature for a predetermined time, then corresponding to a mold which also has the contour of the finished construction ⁇ part transferred and cooled there by this tool and cured.
  • the advantage of the direct method are relatively high Taktra ⁇ th, however, can only be realized relatively simple component geometries by the single forming stroke and the material behavior in the hot state.
  • the advantage of the indirect method is that very complex components can be generated because the component can be molded themselves with egg ⁇ ner any number of Umformh Claus in the contour shaping according to the manufacturing of a normal body component.
  • the disadvantage is a slightly lower clock rate.
  • it is advantageous that no forming step takes place in the heated state which is advantageous in particular when metallic coatings are used, since the metallic coatings are often in a partially liquid form at the high temperatures for austenitizing in front. These liquid metal coatings, in conjunction with the existing austenite, can lead to cracking by so-called "liquid metal embrittlement".
  • a method for producing hardened components from steel sheet is known to be cold-formed in the form of parts of a sleeve provided with a cathodic corrosion ⁇ protection sheet steel and then a heat treatment is carried out for the purpose of austenitization, wherein before , during or after the cold forming of the molded part, a final trimming of the molded part and required punching and the creation of a hole pattern are made, wherein the cold forming and the trimming and the punching and the arrangement of the hole pattern are made on the component such that the molded part 0.5 % to 2% klei ⁇ ner than the finally cured component, so that no bleed in the hard state is longer necessary.
  • a method for heating steel components in which the steel components to be heated are passed through an oven and heated in the furnace to a predetermined temperature, wherein a transport device for transporting the components through the furnace is present, wherein a first transport device receives the components accurately positioned and transported to their heating by the oven and a second transport takes over the parts after heating from the first conveyor to a predetermined transfer point or transfer area and aust with increased speed from the oven and positionally accurate at another takeover point for Wei ⁇ ter town provides and a device for heating steel components.
  • a method for producing a hardened sheet metal component from a steel sheet wherein a sheet steel plate or a preformed or finished molded sheet steel component to a necessary for curing Temperature is heated and then inserted into a tool in which the board or the sheet steel component is cured. To achieve areas of lesser or no cure in this area, the tool has gas scavenged recesses, this gas purging being performed to provide gas pockets in those areas which reduce cooling at a rate greater than the critical cure rate or excludes and an apparatus for performing the method.
  • a press hardening process is ⁇ be known, in which a board ge ⁇ formed in a cooled mold, and is cooled, whereby the tool is used as a fixing currency ⁇ rend curing.
  • the tool has al ⁇ ternierende contact surfaces and recesses press in a certain area against the molded product, the contact areas make up less than 20% of the total area. As a result, this area should be a soft zone of the end pro ⁇ domestic product and still good dimensional accuracy be sitting ⁇ .
  • a Be ⁇ rich second type of board in a third zone of the furnace during a time at a temperature level of about 830 ° C. held up to 950 ° C.
  • the board is formed into a shaped component in a thermoforming process.
  • the component is to be formed with an aluminum-silicon coating, wherein the regions of the first and second type of the mold member should have under ⁇ Kunststoffliche ductility properties in the manner described Wei ⁇ se.
  • a body frame structure or chassis structure which consists of structural steel components, wherein at least the load-bearing steel structural components as corrosion protection z coating a zinc-plate coatings are to wear.
  • a method for producing a component by forming a coated board which is to consist of a tempered steel and wherein it is austenitized prior to forming a first heat treatment and should undergo a layer thickness growth.
  • the process is to be optimized by the heat-treated blanks are stored after rapid cooling, immediately before the forming of the component, the board is subjected to a renewed brief heating to austenitizing and that after the structural transformation, the forming and hardening of the board should take place.
  • the heating should preferably be carried out by induction.
  • an armor for a vehicle wherein the armor is formed by thermoforming and pressing ⁇ hardening, which can be produced with a few welds complex armor with a customized contour.
  • a method for the manufacture of components made of sheet steel with areas of different ductility is known, wherein from a metal sheet of a hardenable steel alloy either a component is produced by deep drawing and the thermoformed component is then at least partially austenitized by a heat treatment and is quench at ⁇ closing in a tool, or the board is teilausteniti- Siert by a heat treatment at least and shaped in a hot state, and this or subsequently quench hardened is, the Blechpla ⁇ tine zbe Anlagenung a cathodic Korrosionsschut has on the basis of zinc, In regions of a desired higher ductility of the component, at least one further metal sheet is arranged on the circuit board, so that the board is heated there to a lesser extent during
  • the workpiece may also be a preformed sheet metal part.
  • the heat absorption capacity of the against the sections is dimensioned such that the temperature of these bodies until the end of the warm-up time reaches only a value below said temperature threshold, so that during the heating of the workpiece heat flows partly into the body. Before re-posture the body cool down to a predetermined output tempera ⁇ ture or cooled by a cooling medium.
  • a B-pillar is known for a body ⁇ component which be ⁇ is a longitudinal profile made of steel wherein the longitudinal profile has a first longitudinal portion with a predominantly martensitic material structure and a second length portion of higher ductility with a überwie ⁇ quietly Having ferritic material structure, wherein the under ⁇ different microstructure be achieved in that during the heating of the component or the board a protection or Isola ⁇ tion body covers the area that should not be heated so much.
  • a method for producing partially hardened steel components wherein a board made of a hardenable steel sheet is subjected to a temperature increase, which is sufficient for quenching and the board after reaching a desired temperature and optionally a desired hold time in a forming tool is transferred in which the board is formed into a component and quenched at the same time or the board is cold formed and the component obtained by the cold forming is subsequently subjected to ⁇ a temperature increase, wherein the temperature increase is performed so that reaches a temperature of the component is, which is not ⁇ manoeuvrable for a quench-hardening and the component then in a tool via ⁇ is, where it is cooled, the heated component and quench therethrough, while heating the Plati- ne and the component for the purpose of increasing the temperature to a temperature necessary for curing in areas which have a lower hardness and / or height ductility should rest one or more absorption masses, each Absorptionsmas ⁇ se
  • a device and a corresponding method for partial hardening of a metallic workpiece are known, wherein the workpiece is transported by means of a conveyor in a continuous furnace along a conveying direction and partially heated by a heater wherein the heater generates at least one heating zone which is moved with the workpiece in the conveying direction.
  • the services provided by Schuein ⁇ direction is available heating zone may co-migrate with the continuous moving in the conveying direction of the workpiece, so that only the in-heating zone portion, but not those portions lying outside of a heating zone of the workpiece to a predetermined temperature, can be heated ⁇ on the so-called Austenitization temperature of steel on ⁇ .
  • a hot forming line is known in which the production of a partially hardened steel component should be possible by processing in several, successive stations.
  • this is heated, inter alia, in a heating station homogeneously to a temperature ⁇ AC 3 , then spent under an infrared lamp station and there only partially to a temperature above AC. 3 to be heated. In this way, the steel component is only partially cured during the subsequent cooling process.
  • the object of the invention is to provide a method of manufacturing a partially hardened steel component, can be heated with high refzi ⁇ sion and generated with the such components quickly and inexpensively.
  • this is a substantially or preference ⁇ as completely finished formed component is heated in a continuous furnace to approximately 700 ° C to form a zinc-iron layer.
  • the component is clocked under three-dimensional contoured beam ⁇ moves and depending on the complexity of the contour in the ⁇ raised this three-dimensional contoured radiator so that the radiator in the area to be heated further should be approximately equally spaced from all areas of the surface.
  • the component is austenitized with the radiator in its area and in particular heated to a Tempe ⁇ rature, which is above the Ac3 point, and heated in particular to 910 ° C and above, while the remaining areas are not exposed to the radiation and thus below the Austenitmaschinestemperatur remain.
  • the components are dimensionally cured in an ent ⁇ speaking tool, that is, merely rapidly cooled without substantial form ⁇ changes.
  • the component areas which by means of the three-dimensional contoured beam on Austenitization were heated and in particular heated above 900 ° C, are hereby converted into martensitic structure and reach tensile strengths of about 1300 MPa.
  • the components are preferably set to corresponding component carrier ⁇ sets, wherein the component carrier are adapted to the component such that a position-accurate creation of the component on the Trä ⁇ ger is possible by a robot and the component in precisely that position on the Component carrier lingers.
  • the oven temperature is between 650 ° C to 800 ° C, preferably 700 ° C to 750 ° C.
  • the component is moved in the oven to a range corresponding to a residence time of the component in the oven such that the component has reached the desired temperature, and in particular the desired 700 ° C. Subsequently, the component arrives in a furnace area in which the three-dimensionally contoured radiators are mounted at certain intervals. The component then dwells for a cycle time of, for example, 15 s under the three-dimensionally contoured radiator for further heating of partial areas of the component to 900 ° C, wherein the remaining oven temperature is still 650 ° C to 800 ° C, preferably ⁇ 700 ° C to 750 ° C, preferably 730 ° C.
  • This relatively low oven temperature suitable for a wide process window in case of malfunctions, as to exclude overheating of the components by a potential, rapid shutdown of the three-dimensionally contoured emitters and low Ofentem ⁇ temperature.
  • the component carriers In order to accomplish the edge regions in which the three-dimensionally contoured radiator acts on the component, ie the regions between the high temperature of the component of more than 900 ° C. and the low temperature of the component, namely 700 ° C. with high selectivity, the component carriers, with which the component is driven through the oven, be provided in known manner with absorption masses, so for example a frame around the desired harder area around, the heat conductivity and the heat capacity ⁇ as the emissivity of the material are matched accordingly. In these areas, the heat energy, which is not to flow from the hotter area in the colder area, then passed through the component into the absorption mass, whereby a very sharp, different
  • the Absorpti ⁇ onsmassen on the return route of the carrier need not be cooled and heated to about 700 ° C
  • Absorptionsmas ⁇ sen when placing the components already to preheat the components for the desired in this field 700 ° C can be used. This even goes so far that the return path of the carrier takes place in the oven or in an under the oven, also hot area, so that the energy output. is kept low due to the mass discharged from the furnace.
  • the components can be raised by means of their carrier, if they have reached the clock ⁇ position of a three-dimensionally contoured radiator, so that they are located close to the radiator.
  • Spotlight can also be moved towards the component.
  • the heating of the component can be carried out by a single radiator or clocked by several radiators located one behind the other.
  • the component After heating of the component in the aforementioned range, the component, which now has the desired temperature profile on ⁇ be discharged from the furnace can be grasped by a Manipulati ⁇ tion Tool and transferred to a form hardening tool.
  • a ebe ⁇ ne board or a flat area of a part can be used instead of a component are subjected to such a lamp with temperature, wherein the radiator is formed in this case planar, otherwise the procedure does not alter, wherein, in a planar region which then has the desired temperature profile on ⁇ then followed by a shaping and not just a pure mold hardening can take place.
  • the three-dimensionally contoured radiator or the radiator just formed can in this case be heated electrically or by gas, wherein it is ge ⁇ geous when heated by gas to encapsulate this gas heating so that the construction ⁇ part or the furnace atmosphere is not exposed to exhaust gases be used to prevent hydrogen input or hydrogen embrittlement of the material.
  • the invention also includes heating elements which are not designed as emitters, but optionally carry out an in ⁇ tion heating in this area, yet a corresponding three-dimensional design is guaranteed ⁇ is made to ensure uniform heating in this area.
  • the invention is exemplified erläu ⁇ tert reference to a drawing. It shows:
  • Figure 1 very schematically a component with a heated
  • FIG. 2 shows a cross section through an oven for carrying out the method
  • Figure 3 a highly schematic longitudinal section through an oven according to the invention.
  • the device of the invention has at least ⁇ an elongated continuous furnace 1 ( Figure 3) having a furnace chamber 2, which is carried movable along a conveying direction.
  • a conveying device which is not shown in detail, may be present in an underfloor region 4, on which carrier 5 for components 6 can be conveyed.
  • the carriers 5 are attached to the conveyor so that they along a longitudinally-oriented passage or
  • the three-dimensionally contoured radiators 8 are present in this area.
  • the three-dimensionally contoured radiator 8 are here ⁇ example of a furnace ceiling 9 by means of appropriate mechanisms on the components 6 lowered.
  • the implementation of the components takes place on the carriers 5 clocked so that z. B. every 15 seconds a continuation takes place and then also held for example 15 s.
  • a carrier 5 and lowered to make which is the rightmost Trä ⁇ ger in Figure 3, being arranged in this case, the three-dimensionally contoured radiator fixed for example to a furnace ceiling.
  • a correspondingly heated component can be manipulated into a corresponding molding tool or mold hardening tool.
  • FIG. 1 shows a corresponding component, wherein a heated region is shown.
  • FIG. 2 shows the radiator lowered onto the component, which is preferably approximately equidistant from the surface of the workpiece 6 in all areas, so that uniform heating is possible.
  • the radiator 8 In order to make the temperature profile between the heated area 10 and the heated area 11 around it as sharp as possible, in the boundary region between by the three-dimensionally contoured radiator 8 on heated surface and the surfaces lying around corresponding absorption masses or a corresponding frame-shaped absorption mass 12 may be present.
  • the Absorp ⁇ tion mass in this case ensures that no or little heat as possible in the remaining area 11, as well as in the furnace chamber is optionally heated by the radiator 8 by the area 10th
  • the absorption mass 12 may also have an absorption mass in regions which are to remain ductile within the heated region, for example in the region of a hole 12 a to be subsequently bored, so that this region remains ductile.
  • a steel strip of a steel austenitisierbaren in ⁇ game as a 22MnB5 or similar curable From ⁇ schreckhärtung steel board is a ⁇ punches.
  • the punched-out board is then drawn deep in a conventional molding process to a component, this component may already have the three-dimensional final contour of the desired component or certain thermal expansions or strains by changing the structure are taken into account so far that after a quench hardening step, but without significant Further transformation takes place, the component has the desired final contour and final size.
  • This component is in particular a component provided with a zinc coating or also with a coating based on zinc.
  • the components are placed on a first transfer station by means of a manipulation tool on the furnace support.
  • the components may have corresponding holes. zen, through the receiving pins or bolts of the carrier grei ⁇ fen.
  • the carrier enters the oven, wherein in the oven, the component on the support first passes through a first region in which the oven temperature between 650 ° C and 800 ° C, in particular 700 ° C to 750 ° C and preferably 730 ° C be ⁇ carries, with this temperature is achieved by kiln pipes.
  • the length of the furnace or this first furnace section is dimensioned so that the components at the end of this Ab ⁇ section have a temperature of 700 to 750 ° C, preferably 730 ° C.
  • the implementation of the components through the furnace is clocked here. This means that a furnace carrier is moved from station to station by a predetermined distance and then held at this station, which is exactly maintained, for a certain time, for example 15 seconds before the kiln support with the component to the next station exactly is moved and there again a holding time ver ⁇ remains. After the furnace section I, the carrier with the component passes into the furnace section II, in which a three-dimensionally contoured radiator is arranged over all or part of the clock stations.
  • the oven support can have an absorption mass
  • the z. B. is formed as a frame around the heated area and rests from the side opposite the radiator to the component.
  • the component After the component has been sufficiently heated in the heated area, the component is clocked out of the oven and promptly picked up by a manipulation tool and transferred into a mold hardening tool.
  • a manipulation tool In the form hardening tool lie ⁇ gen to the shape hardening tool surfaces of the mold hardness tool to the part and cool it rapidly.
  • the cooling in at least the heated areas (through the three-dimensional contouring th emitter) associated with a speed place, which is above the critical hardening speed of the respective steel Mate ⁇ rials such that the first austenitic phase substantially transforms into martensite and thereby a large ⁇ achieved hardness.
  • the carrier optionally provided with the absorbent masses, passes, driven for example by a conveyor chain through the oven and after the outlet from the furnace, for example, un ⁇ tergur of the furnace either in an encapsulated Unter211be ⁇ rich or free cooling again (for the transmission station to the beginning of Oven).
  • both carriers and absorption masses do not require cooling per se, it is appropriate to recirculate carriers, optionally with absorption mass, in an encapsulated region, so that the carrier and the absorption mass in the Oven need not be reheated with, but much more ⁇ the already warm absorption masses can add additional heat energy in the component.
  • cooling is also possible.
  • the heat can be introduced very accurately metered into the components by the three-dimensionally contoured radiator, so that the results with high uniformity reproduzier ⁇ bar can be achieved.
  • the three-dimensionally contoured radiators can, of course, also only be designed two-dimensionally in the case of planar sheet metal components which are to be subjected to post-deformation in the warm state, or if it is intended to act only on planar regions of an otherwise contoured component.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Chemical Kinetics & Catalysis (AREA)

Abstract

L'invention concerne un procédé pour produire des composants partiellement durcis en tôle d'acier, un composant formé à froid à partir d'un matériau en tôle d'acier durcissable étant chauffé dans un four à une température inférieure à la température d'austénitisation (< Ac3) et un émetteur agissant sur le composant dans les zones dans lesquelles le composant doit être austénitisé (< Ac3). L'émetteur présente, côté composant, un contour qui correspond au contour du composant dans la zone à austénitiser. L'invention concerne également un dispositif pour la mise en œuvre du procédé.
EP12780705.5A 2011-12-14 2012-10-23 Procédé et dispositif pour le durcissement partiel de composants en tôle Active EP2791372B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011056444.6A DE102011056444C5 (de) 2011-12-14 2011-12-14 Verfahren und Vorrichtung zum partiellen Härten von Blechbauteilen
PCT/EP2012/070911 WO2013087274A1 (fr) 2011-12-14 2012-10-23 Procédé et dispositif pour le durcissement partiel de composants en tôle

Publications (2)

Publication Number Publication Date
EP2791372A1 true EP2791372A1 (fr) 2014-10-22
EP2791372B1 EP2791372B1 (fr) 2017-06-28

Family

ID=47115879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12780705.5A Active EP2791372B1 (fr) 2011-12-14 2012-10-23 Procédé et dispositif pour le durcissement partiel de composants en tôle

Country Status (6)

Country Link
US (1) US10000823B2 (fr)
EP (1) EP2791372B1 (fr)
CN (1) CN103998630B (fr)
DE (1) DE102011056444C5 (fr)
ES (1) ES2635089T3 (fr)
WO (1) WO2013087274A1 (fr)

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Publication number Priority date Publication date Assignee Title
KR20160122162A (ko) * 2014-02-17 2016-10-21 게스탐프 하르트테크 아베 기다란 용접부 및 이러한 용접부를 가지는 빔
DE102014018409A1 (de) 2014-12-11 2016-06-16 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Blech und Verfahren zu dessen Herstellung
DE102015100100A1 (de) * 2015-01-07 2016-07-07 Thyssenkrupp Ag Werkzeug zum Warmumformen eines Werkstücks und Verfahren zum bereichsselektiven Warmumformen eines Werkstücks
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EP2791372B1 (fr) 2017-06-28
US20140345757A1 (en) 2014-11-27
DE102011056444A1 (de) 2013-08-08
US10000823B2 (en) 2018-06-19
DE102011056444C5 (de) 2015-10-15
DE102011056444B3 (de) 2013-01-03
WO2013087274A1 (fr) 2013-06-20
CN103998630B (zh) 2016-10-05
CN103998630A (zh) 2014-08-20

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