US20190032164A1 - Heat treatment method and heat treatment device - Google Patents

Heat treatment method and heat treatment device Download PDF

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Publication number
US20190032164A1
US20190032164A1 US16/072,677 US201716072677A US2019032164A1 US 20190032164 A1 US20190032164 A1 US 20190032164A1 US 201716072677 A US201716072677 A US 201716072677A US 2019032164 A1 US2019032164 A1 US 2019032164A1
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regions
steel component
temperature
furnace
heat treatment
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Andreas Reinartz
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Schwartz GmbH
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Schwartz GmbH
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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
    • 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
    • C21D1/22—Martempering
    • 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
    • C21D1/26—Methods of annealing
    • 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
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/78—Combined heat-treatments not provided for above
    • 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
    • C21D1/84—Controlled slow cooling
    • 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
    • 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
    • F27B9/028—Multi-chamber type 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/60—Aqueous agents
    • 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
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/613—Gases; Liquefied or solidified normally gaseous material
    • 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
    • C21D2211/001—Austenite
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a method and a device for the heat treatment of a steel component directed specifically at individual zones of the component.
  • the targeted heat treatment of the component takes place in a time-intensive treatment step, which has significant influence on the cycle time of the overall heat treatment device.
  • the object of the invention is therefore to specify a method and a device for the heat treatment of a steel component directed specifically at individual zones of the component, wherein regions of different hardness and ductility are achievable, in which the influence on the cycle time of the overall heat treatment device is minimized.
  • this object is achieved by a method with the features of the independent Claim 1 .
  • Advantageous developments of the method result from the subordinate Claims 2 to 5 .
  • the object is further achieved by a device according to Claim 8 .
  • Advantageous embodiments of the device result from the subordinate Claims 6 to 15 .
  • a steel component is first heated to below the austenitizing temperature Ac3.
  • the steel component is then transferred to a handling station.
  • the second region or second regions is/are cooled as quickly as possible within a handling time t B .
  • the handling station has a positioning device, with the aid of which the precise positioning of the individual regions is guaranteed.
  • the rapid cooling of the second region or the second regions takes place in a preferred embodiment of the method by blowing with a gaseous fluid, for example air or an inert gas.
  • the handling station has for this purpose a device for the blowing of the second region or regions. This device can have one or more nozzles, for example.
  • the blowing of the second region or second regions takes place by blowing with a gaseous fluid, wherein water, for example in nebulized form, is added to the gaseous fluid.
  • a gaseous fluid wherein water, for example in nebulized form, is added to the gaseous fluid.
  • the device has one or more nebulization nozzles in one advantageous embodiment.
  • the heat dissipation from the second region or regions is increased.
  • the handling time t B the second region or the second regions has or have reached a final cooling temperature ⁇ S .
  • the handling time t B is usually in the range of a few seconds. In this case the second region or the second regions can be cooled even to significantly below the martensite start temperature M S .
  • the martensite start temperature M S is approx. 410° C. for the frequently used vehicle body construction steel 22MnB5, for example.
  • the first region or the first regions are not subjected to any special treatment in the handling station, i.e. they are neither blown nor heated or cooled via other special measures.
  • the first region or regions cool slowly in the handling station via natural convection, for example. It has proved advantageous if measures are taken in the handling station to reduce the temperature losses of the first region or first regions.
  • measures can be, for example, the attachment of a thermal radiation reflector and/or the insulation of surfaces of the handling station in the area of the first region or first regions.
  • the steel component is transferred to a second furnace.
  • the entire steel component is heated.
  • the heating can take place by thermal radiation, for example.
  • the steel component remains in the second furnace during a residence time t 130 , which is measured so that the temperature of the first region or the first regions rises above the Ac3 temperature. Since the second region or second regions from the preceding method steps have a much lower temperature at the beginning of the residence time t 130 than the first region or regions, at the end of the residence time t 130 in the second furnace they have not reached the Ac3 temperature.
  • the steel component can then be transferred to a press hardening tool, wherein the first region or first regions are completely austenitized, while the second region or second regions are not austenitized, so that due to the quenching in subsequent press hardening, the first region or first regions form a martensitic structure with high strength values.
  • the second region or second regions were not austenitized at any time in the method, they have a ferritic-pearlitic structure with only low strength values and high ductility following the press hardening step.
  • the components are conveyed after a few seconds in the handling station, which can also have a positioning device to guarantee the precise positioning of the different regions, into a second furnace, which preferably has no special devices for different treatment of the various regions.
  • a furnace temperature ⁇ 4 i.e. a substantially homogeneous temperature in the entire furnace space, is set, which is above the austenitization temperature Ac3.
  • Clearly outlined demarcations of the individual regions can be realized and the distortion of the components is minimized by the low temperature difference between the two regions. Small spreads in the temperature level of the component have an advantageous effect in the further processing in the press.
  • a continuous furnace is advantageously provided as the first furnace.
  • Continuous furnaces normally have a large capacity and are especially well suited to mass production, as they can be charged and operated without a great outlay.
  • a batch furnace for example a chamber furnace, can also be used as a first furnace.
  • the second furnace is advantageously a continuous furnace.
  • both the first and second furnace are executed as continuous furnaces, the necessary residence times for the first and second region or regions can be realized as a function of the component length by way of the setting of the conveying speed and the design of the respective furnace length. Influencing of the cycle time of the overall production line with heat treatment device and press for subsequent press hardening is avoidable in this way.
  • the second furnace is a batch furnace, for example a chamber furnace.
  • the handling station has a device for rapid cooling of one or more second regions of the steel component.
  • the device has a nozzle for blowing the second region or regions of the steel component with a gaseous fluid, for example air or an inert gas, such as nitrogen, for example.
  • a gaseous fluid for example air or an inert gas, such as nitrogen, for example.
  • the device has one or more nebulization nozzles in an advantageous embodiment. The heat dissipation from the second region or regions is increased by blowing with the gaseous fluid with added water.
  • the second region or second regions is/are cooled via thermal conduction, for example by bringing it/them into contact with a die or several dies, which has or which have a much lower temperature than the steel component.
  • the die can be manufactured from a satisfactorily heat-conducting material for this purpose and/or cooled directly or indirectly. A combination of cooling types is also conceivable.
  • steel components with one or more first and/or second regions respectively which can also be formed in a complex manner, can be economically given a corresponding temperature profile, as the different regions can be brought very quickly to the necessary process temperatures in a sharply contoured manner.
  • the second region or second regions were never austenitized during the execution of the method and have low strength values similar to the original strengths of the untreated steel component even after pressing.
  • the chosen geometry of the sub-regions is also freely selectable. Punctiform or linear regions can be produced, as can e.g. large-scale regions. Even the position of the regions is irrelevant.
  • the second regions can be completely enclosed by the first regions, or be located at the edge of the steel component. Even a full-surface treatment is conceivable.
  • a particular orientation of the steel component to the throughput direction is not necessary for the purpose of the method according to the invention for the heat treatment of a steel component directed specifically at individual zones of the component.
  • a limit on the number of steel components treated at the same time is set at most by the press hardening tool or the conveyor technology of the heat treatment device as a whole.
  • the application of the method to already preformed steel components is likewise possible. Due to the three-dimensionally molded surfaces of already preformed steel components, a higher design outlay only results for the production of the counter surfaces.
  • FIG. 1 shows a typical temperature curve in the heat treatment of a steel component with a first and a second region
  • FIG. 2 shows a thermal heat treatment device according to the invention in a top view as a schematic drawing
  • FIG. 3 shows another thermal heat treatment device according to the invention in a top view as a schematic drawing
  • FIG. 4 shows another thermal heat treatment device according to the invention in a top view as a schematic drawing
  • FIG. 5 shows another thermal heat treatment device according to the invention in a top view as a schematic drawing
  • FIG. 6 shows another thermal heat treatment device according to the invention in a top view as a schematic drawing
  • FIG. 7 shows another thermal heat treatment device according to the invention in a top view as a schematic drawing.
  • FIG. 1 shows a typical temperature curve in the heat treatment of a steel component 200 with a first region 210 and a second region 220 according to the inventive method.
  • the steel component 200 is heated in a first furnace 110 according to the temperature curve ⁇ 200,110 drawn in schematically during the residence time t 110 in the first furnace to a temperature below the Ac3 temperature.
  • the steel component 200 is then transferred with a transfer time t 120 to the handling station 150 .
  • the steel component loses heat here.
  • a second region 220 of the steel component 200 is cooled quickly, wherein the second region 220 loses heat according to the drawn-in curve ⁇ 220,150 .
  • the handling time t B is equal here to the residence time t 150 in the handling station 150 .
  • the second region 220 has now reached the final cooling temperature ⁇ S .
  • the temperature of the first region 210 has fallen in the handling station 150 according to the drawn-in temperature curve ⁇ 210,150 , wherein the first region 210 is not located in the area of the cooling device.
  • the steel component 200 is transferred during transfer time t 121 to the second furnace 130 , wherein it loses further heat.
  • the temperature of the first region 210 of the steel component 200 changes according to the schematically drawn-in temperature curve ⁇ 210,130 during the residence time t 130 , i.e. the temperature of the first region 210 of the steel component 200 is heated to a temperature above the Ac3 temperature.
  • the temperature of the second region 220 of the steel component 200 also rises according to the drawn-in temperature curve ⁇ 220,130 during the residence time t 130 without reaching the Ac3 temperature.
  • the second furnace 130 has no special devices for the different treatment of the various regions 210 , 220 . Only a furnace temperature ⁇ 4 , i.e.
  • a substantially homogeneous temperature ⁇ 4 in the entire interior space of the second furnace 130 is set, which is above the austenitization temperature Ac3. Since the second region or second regions have a much lower temperature than the first region or regions at the beginning of the residence time t 130 in the second furnace 130 and both regions are heated equally in the second furnace 130 , at the end of the residence time t 130 they have a likewise different temperature.
  • the residence time t 130 of the steel component 200 in the second furnace 130 is measured so that the first region or the first regions have a temperature at the end of the residence time t 130 that is above the Ac3 temperature, while the second region or second regions have not yet reached the Ac3 temperature at this point.
  • the steel component can then be transferred during a transfer time t 131 to a press hardening tool 160 , which is installed in a press, which is not shown.
  • a transfer time t 131 the steel component 200 again loses heat, so that the temperature of the first region or regions can also fall below the Ac3 temperature.
  • This region or these regions are substantially completely austenitized, however, when they leave the second furnace 130 , so that due to quenching during a residence time t 160 in the press hardening tool 160 they experience a transformation to a hard martensitic structure.
  • the necessary residence time t 130 of the steel component 200 in the second furnace 130 can be realized as a function of the length of the steel component 200 by way of the setting of the conveying speed and the design of the length of the second furnace 130 . Influencing of the cycle time of the heat treatment device 100 is minimized thus and can even be avoided entirely.
  • FIG. 2 shows a heat treatment device 100 according to the invention in a 90° arrangement.
  • the heat treatment device 100 has a loading station 101 , via which steel components are supplied to the first furnace 110 .
  • the heat treatment device 100 also has the handling station 150 and the second furnace 130 arranged behind it in the main throughput direction D.
  • a removal station 131 Arranged further behind in the main throughput direction D is a removal station 131 , which is equipped with a positioning device (not shown).
  • the main throughput direction now bends by substantially 90° to let a press hardening tool 160 in a press (not shown) follow, in which the steel component 200 is press hardened.
  • a container 161 Arranged in the axial direction of the first furnace 110 and the second furnace 130 is a container 161 , into which reject parts can be passed.
  • the first furnace 110 and the second furnace 120 are preferably executed in this arrangement as continuous furnaces, for example roller hearth furnaces.
  • FIG. 3 shows a heat treatment device 100 according to the invention in a straight arrangement.
  • the heat treatment device 100 has a loading station 101 , via which steel components are supplied to the first furnace 110 .
  • the heat treatment device 100 also has the handling station 150 and arranged behind it in the main throughput direction D the second furnace 130 .
  • a removal station 131 Arranged further behind in the main throughput direction D is a removal station 131 , 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 Arranged substantially at 90° to the removal station 131 is a container 161 , into which reject parts can be passed.
  • the first furnace 110 and the second furnace 120 are likewise preferably executed as continuous furnaces, for example roller hearth furnaces, in this arrangement.
  • FIG. 4 shows another variant of a heat treatment device 100 according to the invention.
  • the heat treatment device 100 has a loading station 101 , via which steel components are supplied to the first furnace 110 .
  • the first furnace 110 is again preferably formed as a continuous furnace in this implementation.
  • the heat treatment device 100 also has the handling station 150 , which is combined in this embodiment with a removal station 131 .
  • the removal station 131 can have a gripper device (not shown), for example.
  • the removal station 131 removes the steel components 200 from the first furnace 110 by means of the gripper device, for example.
  • the heat treatment with the cooling of the second region or second regions 220 is carried out and the steel component or steel components 200 are placed into a second furnace 130 arranged substantially at 90° to the axis of the first furnace 110 .
  • This second furnace 130 is preferably provided in this embodiment as a chamber furnace, for example with several chambers.
  • the steel components 200 are removed from the second furnace 130 via the removal station 131 and placed into a press hardening tool 160 integrated into a press (not shown) lying opposite.
  • the removal station 131 can have a positioning device (not shown) for this.
  • a container 161 Arranged in the axial direction of the first furnace 110 behind the removal station 131 is a container 161 , into which reject parts can be passed.
  • the main throughput direction D in this embodiment describes a deflection of substantially 90°. No second positioning system for the handling station 150 is necessary in this embodiment.
  • this embodiment is advantageous if insufficient space is available in an axial direction of the first furnace 110 in a production hall, for example.
  • the cooling of the second regions 220 of the steel component 200 can also take place in this embodiment between removal station 131 and second furnace 130 , so that no fixed handling station 150 is required.
  • a cooling device for example a blowing nozzle, can be integrated into the gripper device.
  • the removal device 131 takes care of the transfer of the steel component 200 from the first furnace 110 to the second furnace 130 and to the press hardening tool 160 or the container 161 .
  • press hardening tool 160 and container 161 can be exchanged, as is to be seen in FIG. 5 .
  • the main throughput direction D in this embodiment describes two deflections of substantially 90°.
  • a heat treatment device compared with the embodiment shown in FIG. 4 the second furnace 130 is moved to a second level above the first furnace 110 .
  • the cooling of the second regions 220 of the steel component 200 can likewise take place between removal station 131 and second furnace 130 , so that no fixed handling station 150 is required. It is again advantageous to to execute the first furnace 110 as a continuous furnace and the second furnace 120 as a chamber furnace, possibly with several chambers.
  • FIG. 7 a last embodiment of the inventive heat treatment device is shown schematically in FIG. 7 .
  • the positions of press hardening tool 160 and container 161 are exchanged.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Details (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
US16/072,677 2016-01-25 2017-01-25 Heat treatment method and heat treatment device Abandoned US20190032164A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016201025.5 2016-01-25
DE102016201025.5A DE102016201025A1 (de) 2016-01-25 2016-01-25 Wärmebehandlungsverfahren und Wärmebehandlungsvorrichtung
PCT/EP2017/051510 WO2017129602A1 (de) 2016-01-25 2017-01-25 Wärmebehandlungsverfahren und wärmebehandlungsvorrichtung

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US (1) US20190032164A1 (hu)
EP (1) EP3408416B1 (hu)
JP (2) JP7168450B2 (hu)
CN (2) CN206204351U (hu)
AT (1) AT15624U1 (hu)
BR (1) BR112018014947B1 (hu)
DE (2) DE102016201025A1 (hu)
ES (1) ES2904571T3 (hu)
HU (1) HUE057631T2 (hu)
MX (1) MX2018008998A (hu)
PL (1) PL3408416T3 (hu)
PT (1) PT3408416T (hu)
WO (1) WO2017129602A1 (hu)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210252579A1 (en) * 2018-06-09 2021-08-19 Baoshan Iron & Steel Co., Ltd. Manufacturing method for hot stamping component having aluminium-silicon alloy coating, and hot stamping component
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JP2019506532A (ja) 2019-03-07
JP7261267B2 (ja) 2023-04-19
CN108884508B (zh) 2020-08-14
ES2904571T3 (es) 2022-04-05
AT15624U1 (de) 2018-03-15
DE202016104194U1 (de) 2017-04-27
CN108884508A (zh) 2018-11-23
EP3408416B1 (de) 2021-11-10
JP2021179012A (ja) 2021-11-18
DE102016201025A1 (de) 2017-07-27
KR20180119580A (ko) 2018-11-02
PT3408416T (pt) 2022-01-26
WO2017129602A1 (de) 2017-08-03
BR112018014947A2 (pt) 2018-12-26
HUE057631T2 (hu) 2022-05-28
PL3408416T3 (pl) 2022-03-28
BR112018014947B1 (pt) 2022-11-22

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