EP3420111B1 - Procédé de traitement thermique ciblé sur les zones d'une pièce - Google Patents

Procédé de traitement thermique ciblé sur les zones d'une pièce Download PDF

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Publication number
EP3420111B1
EP3420111B1 EP17704171.2A EP17704171A EP3420111B1 EP 3420111 B1 EP3420111 B1 EP 3420111B1 EP 17704171 A EP17704171 A EP 17704171A EP 3420111 B1 EP3420111 B1 EP 3420111B1
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EP
European Patent Office
Prior art keywords
temperature
steel component
regions
areas
treatment station
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EP17704171.2A
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German (de)
English (en)
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EP3420111C0 (fr
EP3420111A1 (fr
Inventor
Frank WILDEN
Jörg Winkel
Andreas Reinartz
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Schwartz GmbH
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Schwartz GmbH
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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
    • 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
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted 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
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
    • 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
    • C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
    • 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
    • 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
    • C21D1/667—Quenching devices for spray 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/009—Pearlite
    • 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 method for targeted heat treatment of a steel component in individual component zones.
  • body components with a favorable strength-to-weight ratio.
  • these components include in particular A and B pillars, side impact protection beams in doors, sills, frame parts, bumper guards, cross members for the floor and roof, front and rear side members.
  • the bodyshell with a safety cage usually consists of a hardened steel sheet with a strength of approx. 1,500 MPa. Al-Si-coated steel sheets are often used. The process of so-called press hardening was developed to produce a component from hardened sheet steel.
  • Steel sheets are first heated to austenite temperature, then placed in a press tool, quickly formed and quickly quenched by the water-cooled tool to less than the martensite starting temperature. This creates a hard, solid martensite structure with a strength of approx. 1,500 MPa. However, a steel sheet hardened in this way only has a low elongation at break. The kinetic energy of an impact cannot therefore be sufficiently converted into heat of deformation.
  • Soft edge areas of the component also allow contour trimming in the tool and can therefore make complex laser trimming unnecessary.
  • a method for producing a press-hardened molded component is, for example, from EP 2 679 692 A1 known.
  • a board is homogeneously heated to a forming temperature of 450°C to 700°C. Individual areas of the board are then heated to a higher temperature of up to or more than 900°C over a period of a few seconds and then formed and hardened.
  • the targeted heat treatment of the component takes place in a time-consuming treatment step, which has a significant influence on the cycle time of the entire heat treatment device.
  • the object of the invention is therefore to provide a method for the targeted heat treatment of a steel component in individual component zones, whereby areas of different hardness and ductility can be achieved, in which the influence on the cycle time of the entire heat treatment device is minimized.
  • a heat treatment device not covered by the claims has a first furnace for heating a steel component to a temperature below the AC3 temperature, a treatment station and a second furnace, the treatment station having a device for quickly heating the first and third areas and a device for rapid cooling of one or more third areas of the steel component and the second furnace has a device for introducing heat.
  • the heat supply in the second oven is achieved via thermal radiation.
  • a steel component is first heated in an oven to below the austenitization temperature.
  • the different areas are then treated differently in a treatment station:
  • the first area or areas are first brought to a temperature above AC3 within a few seconds, for example with the help of a high-power laser, so that the structure is transformed as completely as possible into austenite.
  • the areas irradiated by the laser are precisely defined by channel walls that are arranged as vertically as possible to the component surface.
  • the first area or areas are then not subjected to any further special treatment in the treatment station, i.e. they are neither blown on nor heated or cooled using other special measures.
  • the first area or areas cool slowly in the treatment station, for example via natural convection and radiation. It has proven to be advantageous if measures are taken in the treatment station to reduce the temperature losses of the first or first areas. Such measures can be, for example, the attachment of heat radiation reflectors and/or the insulation of surfaces of the treatment station in the area of the first or first areas.
  • the second area or the second areas are not subjected to any special treatment in the treatment station, ie they are neither blown on nor heated or cooled using other special measures.
  • the second area or areas cool slowly in the treatment station, for example via natural convection and radiation. It has proven to be advantageous if measures are taken in the treatment station to reduce the temperature losses of the second or second areas. Such measures can be, for example, the attachment of heat radiation reflectors and/or the insulation of surfaces of the treatment station in the area of the second or second areas.
  • the second or second areas were not completely austenitized during the process and, even after pressing in a subsequent press hardening process, have low strength values similar to the original strengths of the untreated steel component.
  • the third area or areas are first brought to a temperature above AC3 within a few seconds, for example with the help of a high-power laser, so that the structure is transformed as completely as possible into austenite.
  • the areas irradiated by the laser are precisely defined by channel walls that are arranged as vertically as possible to the component surface.
  • the third or third areas are cooled down as quickly as possible within a treatment time t 152 .
  • the third region or regions are rapidly cooled by blowing with a gaseous fluid, for example air or a protective gas.
  • the treatment station has a device for blowing on the third area or areas. This device can, for example, have one or more nozzles.
  • the third or third regions are blown by blowing with a gaseous fluid, with water, for example in nebulized form, being added to the gaseous fluid.
  • the device has one or more misting nozzles.
  • the heat is dissipated from the or increased from the third areas.
  • the third area or areas have reached a cooling stop temperature ⁇ S.
  • the treatment time t 152 is usually in the range of a few seconds.
  • the components are transported into a second oven, which preferably does not have any special devices for treating the different areas differently.
  • a second oven which preferably does not have any special devices for treating the different areas differently.
  • Clearly contoured boundaries have already been implemented in the treatment station.
  • only an oven temperature ⁇ 4 ie a substantially homogeneous temperature in the entire oven space, is set, which is below the austenitization temperature AC3.
  • the temperatures of the individual areas approach each other and the small temperature difference between the areas minimizes the distortion of the components.
  • the smallest possible spread in the temperature level of the component has an advantageous effect during further processing in the press.
  • the internal temperature ⁇ 4 in the second oven is less than the AC3 temperature.
  • a continuous oven is advantageously provided as the first oven.
  • Continuous ovens usually have a large capacity and are particularly suitable for mass production because they can be loaded and operated without much effort. But a batch oven, for example a chamber oven, can also be used as the first oven.
  • the second oven is a continuous oven.
  • both the first and second furnaces are designed as continuous furnaces, the necessary residence times for the first and second areas can be in Dependence of the component length can be realized via the setting of the conveying speed and the design of the respective oven length. In this way, an influence on the cycle time of the entire production line with the heat treatment device and press for subsequent press hardening can be avoided.
  • the second oven is a batch oven, for example a chamber oven.
  • the treatment station has a device for quickly heating one or more third areas of the steel component.
  • the device has one or more high-power lasers for irradiating the third region or regions of the steel component.
  • the areas are clearly demarcated by appropriately shaped channels.
  • the treatment station has a device for quickly cooling one or more third areas of the steel component.
  • the device has a nozzle for blowing a gaseous fluid, for example air or a protective gas such as nitrogen, into the third region or regions of the steel component.
  • the device has one or more misting nozzles. By blowing with the gaseous fluid mixed with water, the heat dissipation from the third area or areas is increased.
  • the third or third areas are cooled via heat conduction and contact cooling, for example by bringing them into contact with a stamp or several stamps, which has or have a lower temperature than the steel component.
  • the stamp can be made of a material that conducts heat well and/or can be tempered directly or indirectly.
  • a combination of cooling types is also conceivable.
  • a corresponding temperature profile can be economically imposed on steel components, each with one or more first, second and / or third areas, which can also be complex in shape, since the different areas can be brought to the necessary process temperatures very quickly with sharp contours.
  • the method shown it is possible with the method shown to set almost any number of the three different areas, with different third areas being able to achieve different strength values among themselves, if necessary.
  • the selected geometry of the sub-areas can also be freely selected. Point or line-shaped areas as well as large areas can be displayed. The location of the areas is also irrelevant. The individual areas can be completely enclosed by other areas or located at the edge of the steel component. Even full-surface treatment is conceivable.
  • a special orientation of the steel component in relation to the direction of travel is not required for the purpose of the method according to the invention for targeted heat treatment of a steel component in individual component zones.
  • the number of steel components treated at the same time is limited at most by the press hardening tool or the conveyor technology of the entire heat treatment device. It is also possible to apply the process to pre-formed steel components.
  • the three-dimensionally shaped surfaces of pre-formed steel components simply result in a higher design effort to represent the counter surfaces.
  • existing heat treatment systems can also be adapted to the method according to the invention.
  • a conventional heat treatment device with only one furnace only the treatment station and the second furnace need to be installed behind it. Je Depending on the design of the existing oven, it is also possible to divide it so that the original one oven becomes the first and second oven.
  • Fig. 1 is a typical temperature curve during the heat treatment of a steel component 200 with a first area 210, a second area 220 and a third area 230 according to the inventive method.
  • the respective areas can be present multiple times, that is, there can be several first areas 210, several second areas 220 and several third areas 230, with any combination of the number of areas possible.
  • the steel component 200 is heated in the first furnace 110 according to the schematically drawn temperature curve ⁇ 200,110 during the residence time t 110 to a temperature below the AC3 temperature.
  • the steel component 200 is then transferred to the treatment station 150 with a transfer time t 121 .
  • the steel component loses heat.
  • a first area 210 and a third area 230 of the steel component 200 are quickly heated above the austenitization temperature AC3 using laser radiation, with the second area 220 losing heat according to the drawn curve ⁇ 220.151 and ⁇ 220.152 . This happens within a few seconds.
  • the third area 230 is quickly cooled down to the desired cooling stop temperature ⁇ S according to the drawn temperature curve ⁇ 230, 152 .
  • the cooling stop temperature ⁇ S can be different between the individual partial areas of the third areas 230 if variable material properties of the third areas 230 are desired within a component.
  • the third region 230 can be cooled quickly, for example, by blowing with a gaseous fluid.
  • the third area 230 has now reached the cooling stop temperature ⁇ S.
  • the temperature of the first area 210 and also the second area 220 in the treatment station 150 has fallen according to the drawn temperature profile ⁇ 210.152 or ⁇ 220.151 , ⁇ 220.152 .
  • the steel component 200 is transferred into the second furnace 130 during the transfer time t 122 .
  • the temperature of the first region 210 of the steel component 200 changes according to the schematically drawn temperature curve ⁇ 210,130 during the residence time t 130 .
  • the temperature of the second region 220 of the steel component 200 also behaves according to the drawn temperature curve ⁇ 220,130 during the residence time t 130 , although it does not reach the AC3 temperature.
  • the temperature of the third region 230 of the steel component 200 also behaves according to the drawn temperature curve ⁇ 230,130 during the residence time t 130 without reaching the AC3 temperature.
  • the second furnace 130 has no special devices for different treatment of the different areas 210, 220, 230. Only an oven temperature ⁇ 4 , ie a substantially homogeneous temperature ⁇ 4 is set in the entire interior of the second furnace 130, which is below the austenitization temperature AC3 is located.
  • the steel component can then be transferred during a transfer time t 140 into a press hardening tool 160, which is installed in a press, not shown.
  • contoured boundaries can be achieved between the areas 210, 220, 230 and the distortion of the steel component 200 is minimized due to the small temperature difference. Small differences in the temperature level of the steel component 200 have an advantageous effect during further processing in the press hardening tool 160.
  • the necessary residence time t 130 of the steel component 200 in the second furnace 130 can be realized depending on the length of the steel component 200 by adjusting the conveying speed and designing the length of the second furnace 130. An influence on the cycle time of the heat treatment device 100 is thus minimized and can even be avoided entirely.
  • Fig. 2 shows a heat treatment device 100 that can be used according to the invention in a 90 ° arrangement.
  • the heat treatment device 100 has a Loading station 101, via which steel components are fed to the first furnace 110. Furthermore, the heat treatment device 100 has the treatment station 150 and the second oven 130 arranged behind it in the main flow direction D. Arranged further behind it in the main flow direction D is a removal station 140, which is equipped with a positioning device (not shown).
  • the main flow direction now bends by essentially 90° in order to allow a press hardening tool 160 to follow in a press (not shown) in which the steel component 200 is press hardened.
  • a container 161 into which reject parts can be placed is arranged in the axial direction of the first oven 110 and the second oven 130.
  • the first oven 110 and the second oven 130 are preferably designed as continuous ovens, for example roller hearth ovens.
  • Fig. 3 shows a heat treatment device 100 that can be used according to the invention in a straight arrangement.
  • the heat treatment device 100 has a loading station 101 via which steel components are fed to the first furnace 110.
  • the heat treatment device 100 has the treatment station 150 and the second oven 130 arranged behind it in the main flow direction D.
  • a removal station 140 Arranged further behind it in the main flow direction D is a removal station 140, which is equipped with a positioning device (not shown).
  • a press hardening tool 160 in a press (not shown), in which the steel component 200 is press hardened.
  • a container 161 into which reject parts can be placed is arranged essentially at 90° to the removal station 131.
  • the first oven 110 and the second oven 130 are also preferably designed as continuous ovens, for example roller hearth ovens.
  • Fig. 4 shows a further variant of a heat treatment device 100 that can be used according to the invention.
  • the heat treatment device 100 again has a loading station 101, via which steel components are fed to the first furnace 110.
  • the first oven 110 is again preferably designed as a continuous oven.
  • the heat treatment device 100 has the treatment station 150, which in this embodiment is combined with a removal station 131.
  • the removal station 140 can, for example, have a gripping device (not shown). In the removal station 140, the steel components 200 are removed from the first furnace 110, for example by means of the gripping device.
  • the heat treatment of the second or second regions 220 and/or the third or third regions 230 is carried out and the steel component or steel components 200 are placed in a second oven 130 arranged essentially at 90° to the axis of the first furnace 110.
  • this second oven 130 is preferably provided as a chamber oven, for example with several chambers.
  • the steel components 200 are removed from the second furnace 130 via the removal station 140 and placed in an opposite press hardening tool 160 installed in a press (not shown).
  • the removal station 140 can have a positioning device (not shown).
  • a container 161 is arranged behind the removal station 140 in the main flow direction D, into which reject parts can be placed.
  • the main flow direction D describes a deflection of essentially 90°.
  • a second positioning system for the treatment station 150 is not required.
  • this embodiment is advantageous if there is not enough space available in the axial direction of the first oven 110, for example in a production hall.
  • the heat treatment of the first or first regions 210 and the third regions 230 of the steel component 200 can also take place between the removal station 140 and the second furnace 130, so that there is no need for a stationary treatment station 150.
  • the treatment station 150 can be integrated into the gripping device.
  • the removal station 140 ensures the transfer of the steel component 200 from the first furnace 110 into the second furnace 130 and into the press hardening tool 160 or into the container 161.
  • the position of press hardening tool 160 and container 161 can be swapped, as in Fig. 5 to see.
  • the main flow direction D describes two deflections of essentially 90°.
  • a heat treatment device Compared to the in Fig. 4
  • the second oven 130 is moved to a second level above the first oven 110.
  • the treatment of the first region or regions 210 and the third region or regions 230 of the steel component 200 can also take place between the removal station 140 and the second furnace 130, so that there is no need for a stationary treatment station 150.
  • FIG. 7 a final embodiment of the heat treatment device that can be used according to the invention is shown schematically. Compared to that in Fig. 6 In the embodiment shown, the positions of press hardening tool 160 and container 161 are swapped.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Tunnel Furnaces (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Claims (8)

  1. Procédé de traitement thermique ciblé d'un élément de construction en acier (200) dans des zones individuelles de l'élément de construction, dans l'élément de construction en acier (200) une structure prioritairement austénitique, à partir de laquelle une structure majoritairement martensitique peut être produite par trempe, étant définie dans une ou plusieurs premières zones (210) et une structure majoritairement ferritique-perlitique étant définie dans une ou plusieurs deuxième zones (220), une structure majoritairement bainitique étant également définie dans l'élément de construction en acier (200) dans une ou plusieurs troisièmes zones (230), l'élément de construction en acier (200) étant d'abord chauffé dans un premier four (110) à une température inférieure à la température AC3, l'élément de construction en acier (200) étant ensuite transféré dans une station de traitement (150), ledit élément de construction en acier pouvant refroidir pendant le transfert et, dans la station de traitement (150), les une ou plusieurs premières zones (210) et les une ou plusieurs troisièmes zones (230) de l'élément de construction en acier (200) étant chauffé pendant un temps de séjour t151 à une température au-dessus de la température AC3, les une ou plusieurs troisièmes zones (230) de l'élément de construction en acier (200) étant ensuite refroidies à la température d'arrêt de refroidissement ∂s et l'élément de construction en acier (200) étant ensuite transféré dans un deuxième four (130) dans lequel l'élément de construction en acier (200) reste pendant un temps de séjour (t130) à une température inférieure à la température d'austénitisation jusqu'à ce qu'une structure bainitique suffisante dans les une ou plusieurs troisièmes zones (230) ait été formée.
  2. Procédé selon la revendication 1, l'apport de chaleur dans le deuxième four (130) étant effectué par rayonnement thermique.
  3. Procédé selon la revendication 1 ou 2, les une ou plusieurs premières zones (210) de l'élément de construction en acier (200) étant portées, dans la station de traitement (150), à une température supérieure à la température d'austénitisation pendant un temps de séjour t151 à l'aide d'un laser à haute puissance.
  4. Procédé selon l'une des revendications précédentes, les une ou plusieurs troisièmes zones (230) de l'élément de construction en acier (200) étant portées, dans la station de traitement (150), à une température supérieure à la température d'austénitisation pendant un temps de séjour t151 à l'aide d'un laser à haute puissance.
  5. Procédé selon l'une des revendications précédentes, les une ou plusieurs troisièmes zones (230) de l'élément de construction en acier (200) étant soumises, dans la station de traitement (150), à un soufflage avec un fluide gazeux pendant un temps de séjour t152 afin d'effectuer le refroidissement.
  6. Procédé selon la revendication 5, le fluide gazeux contenant de l'eau.
  7. Procédé selon l'une des revendications précédentes, les une ou plusieurs troisièmes zones (230) de l'élément de construction en acier (200) étant mises en contact, dans la station de traitement (150), avec un poinçon pendant un temps de séjour t152 afin d'effectuer le refroidissement, le tampon ayant une température inférieure à celle des une ou plusieurs troisièmes zones (230).
  8. Procédé selon l'une des revendications précédentes, la température intérieure ∂4 dans le deuxième four (130) étant inférieure à la température AC3.
EP17704171.2A 2016-02-23 2017-01-25 Procédé de traitement thermique ciblé sur les zones d'une pièce Active EP3420111B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016202766.2A DE102016202766A1 (de) 2016-02-23 2016-02-23 Wärmebehandlungsverfahren und Wärmebehandlungsvorrichtung
PCT/EP2017/051511 WO2017144217A1 (fr) 2016-02-23 2017-01-25 Procédé de traitement thermique et dispositif de traitement thermique

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EP3420111A1 EP3420111A1 (fr) 2019-01-02
EP3420111B1 true EP3420111B1 (fr) 2024-01-24
EP3420111C0 EP3420111C0 (fr) 2024-01-24

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020106139A1 (de) * 2020-03-06 2021-09-09 Schwartz Gmbh Thermisches Behandeln eines Bauteils
DE102020106192A1 (de) * 2020-03-06 2021-09-09 Schwartz Gmbh Thermisches Behandeln eines beschichteten Bauteils
DE102022130153A1 (de) * 2022-11-15 2024-05-16 Schwartz Gmbh Thermisches Behandeln eines metallischen Bauteils
DE102022130154A1 (de) * 2022-11-15 2024-05-16 Schwartz Gmbh Thermisches Behandeln eines metallischen Bauteils
DE102022130152A1 (de) * 2022-11-15 2024-05-16 Schwartz Gmbh Thermisches Behandeln eines metallischen Bauteils

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4422588C2 (de) * 1994-06-28 1999-09-23 Ald Vacuum Techn Gmbh Verfahren zum Abschrecken von Werkstücken durch Gase und Wärmebehandlungsanlage zur Durchführung des Verfahrens
DE10208216C1 (de) * 2002-02-26 2003-03-27 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines metallischen Bauteils
US20070246135A1 (en) * 2004-08-18 2007-10-25 Pollard Kennth Brian T Method of Manufacturing a Hardened Forged Steel Component
KR101124239B1 (ko) * 2006-03-17 2012-03-27 정우창 고강도 자동차 시트 레일 및 이의 제조 방법
US8083872B2 (en) * 2007-08-03 2011-12-27 Rolls-Royce Plc Method of heat treating a superalloy component and an alloy component
GB0719457D0 (en) * 2007-10-04 2007-11-14 Skf Ab Heat-treatment process for a steel
DE102008030279A1 (de) * 2008-06-30 2010-01-07 Benteler Automobiltechnik Gmbh Partielles Warmformen und Härten mittels Infrarotlampenerwärmung
WO2010150683A1 (fr) * 2009-06-22 2010-12-29 新日本製鐵株式会社 Procédé de pressage à chaud pour tôles d'acier, dispositif de pressage à chaud pour tôles d'acier et élément formé en acier
DE102010010156A1 (de) * 2010-03-04 2011-09-08 Kirchhoff Automotive Deutschland Gmbh Verfahren zur Herstellung eines Formteiles mit mindestens zwei Gefügebereichen unterschiedlicher Duktilität
JP2011255413A (ja) * 2010-06-11 2011-12-22 Toyoda Iron Works Co Ltd 鋼板の加熱装置、プレス成形品の製造方法、およびプレス成形品
DE102010048209C5 (de) * 2010-10-15 2016-05-25 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines warmumgeformten pressgehärteten Metallbauteils
PT2497840T (pt) * 2011-03-10 2017-08-08 Schwartz Gmbh Sistema de forno para o aquecimento parcial de peças de chapa metálica
KR101304621B1 (ko) * 2011-06-28 2013-09-05 주식회사 포스코 영역별로 상이한 강도를 갖는 프레스 성형품의 제조방법
EP2548975A1 (fr) * 2011-07-20 2013-01-23 LOI Thermprocess GmbH Procédé et dispositif de fabrication d'un composant métallique durci doté d'au moins deux zones ayant une ductilité différente
JP5380632B1 (ja) * 2012-03-13 2014-01-08 株式会社アステア 鋼板部材の強化方法
EP2679692A1 (fr) * 2012-06-29 2014-01-01 GEDIA Gebrüder Dingerkus GmbH Procédé de fabrication d'un composant de formage en tôle d'acier durci par une presse
DE102012216468B3 (de) * 2012-09-14 2014-01-16 Ebner Industrieofenbau Gmbh Verfahren zum Herstellen eines Metallbauteils für eine Metallvorrichtung
KR101482336B1 (ko) * 2012-12-21 2015-01-13 주식회사 포스코 이종 강도 영역을 갖는 열간 성형품의 제조방법
HUE051924T2 (hu) * 2014-01-23 2021-03-29 Schwartz Gmbh Hõkezelési eljárás
DE102014201259A1 (de) 2014-01-23 2015-07-23 Schwartz Gmbh Wärmebehandlungsvorrichtung

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"22nd IFHTSE Congress and European Conference on Heat Treatment 2015 Venice", 16 April 2015 (2015-04-16), Retrieved from the Internet <URL:https://me-kono.eu/conferences/22nd-ifhtse-congress-european-conference-on-heat-treatment-2015-venice> [retrieved on 20210215] *
ALTENA H ET AL: "Process technology and plant design for bainite hardening", 20 May 2015 (2015-05-20), pages 1 - 9, XP009525676, ISBN: 978-88-98990-03-0, Retrieved from the Internet <URL:http://www.proceedings.com/35082.html> *
H. ALTENA ET AL: "Process technology and plant design for bainite hardening", LA METALLURGIA ITALIANA -N. 3 2016, 1 March 2016 (2016-03-01), XP055698902, Retrieved from the Internet <URL:http://www.aimnet.it/allpdf/pdf_pubbli/mar16/Altena.pdf> [retrieved on 20200527] *

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DE102016202766A1 (de) 2017-08-24
US11118239B2 (en) 2021-09-14
WO2017144217A1 (fr) 2017-08-31
EP3420111C0 (fr) 2024-01-24
CN109072326B (zh) 2021-03-19
MX2018009922A (es) 2019-01-21
KR102592707B1 (ko) 2023-10-20
BR112018016740A2 (pt) 2018-12-26
JP2022166196A (ja) 2022-11-01
EP3420111A1 (fr) 2019-01-02
US20190024199A1 (en) 2019-01-24
JP7437466B2 (ja) 2024-02-22
CN109072326A (zh) 2018-12-21
BR112018016740B1 (pt) 2023-03-21
KR20180118158A (ko) 2018-10-30

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