EP3851546A1 - Dispositif de traitement thermique - Google Patents

Dispositif de traitement thermique Download PDF

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Publication number
EP3851546A1
EP3851546A1 EP21162238.6A EP21162238A EP3851546A1 EP 3851546 A1 EP3851546 A1 EP 3851546A1 EP 21162238 A EP21162238 A EP 21162238A EP 3851546 A1 EP3851546 A1 EP 3851546A1
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EP
European Patent Office
Prior art keywords
furnace
temperature
heat treatment
steel component
areas
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.)
Pending
Application number
EP21162238.6A
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German (de)
English (en)
Inventor
Andreas Reinartz
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.)
Schwartz GmbH
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Schwartz GmbH
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Filing date
Publication date
Application filed by Schwartz GmbH filed Critical Schwartz GmbH
Publication of EP3851546A1 publication Critical patent/EP3851546A1/fr
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0062—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
    • C21D1/18—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
    • C21D1/56—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
    • 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
    • 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
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F27B9/028—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
    • 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
    • C21D2211/002—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
    • C21D2211/008—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

Definitions

  • the invention relates to a device for targeted component zone-specific heat treatment of a steel component.
  • press hardening was developed to manufacture a component from hardened sheet steel.
  • Steel sheets are first heated to the austenite temperature, then placed in a press tool, quickly shaped and quickly quenched to less than the martensite starting temperature by the water-cooled tool.
  • a steel sheet hardened in this way has only a low elongation at break. The kinetic energy of an impact can therefore not be sufficiently converted into heat of deformation.
  • first areas components with high strength are fundamentally desirable in order to obtain components that can withstand high mechanical loads and are lightweight.
  • high-strength components should also be able to have partially soft areas. This brings the desired, partially increased deformability in the event of a crash. This is the only way to reduce the kinetic energy of an impact and thus the acceleration forces on the occupants and the rest of the world Vehicle can be minimized.
  • modern joining processes require softened areas that enable the joining of identical or different materials. For example, fold, crimp or rivet connections that require deformable areas in the component must often be used.
  • 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 specify a device for the targeted component zone-specific heat treatment of a steel component, with areas of different hardness and ductility being achievable, in which the influence on the cycle time of the entire heat treatment device is minimized.
  • the heat treatment device for the targeted component zone-specific heat treatment of a steel component has a first furnace for heating the steel component to a temperature above AC3 temperature and is characterized in that the heat treatment device also has a treatment station and a second furnace, the steel component from the first furnace is transferable into the treatment station, and wherein the treatment station has a device for cooling one or more second areas of the steel component.
  • the steel component is first heated to above the austenitizing temperature AC3 so that the structure can be converted completely into austenite.
  • the quenching is so rapid that primarily a martensitic structure is formed and strengths of around 1,500 MPa are achieved. The quenching takes place advantageously from the completely austenitized structure.
  • cooling must be carried out with at least the lower critical cooling rate.
  • ⁇ 1 for the material 22MnB5, which is usually used for press hardening.
  • An at least partially martensitic structure can still arise if the quenching starts at a lower temperature, but a reduced strength of the component is then to be expected in this area.
  • This temperature profile is common in the press hardening process, especially for fully hardened components.
  • a second area or several second areas are also initially heated to above the austenitizing temperature AC3 so that the structure can be completely converted into austenite. It is then cooled as quickly as possible within a treatment time t B to a cooling stop temperature ⁇ 2.
  • the martensite start temperature for 22MnB5, for example, is approx. 410 ° C. A slight oscillation in temperature ranges below the martensite start temperature is also possible. Subsequently, there is no further rapid cooling, so that the majority of the bainitic structure is formed. This structural transformation does not take place suddenly, but requires a treatment time. The conversion is exothermic.
  • the cooling stop temperature ⁇ 2 the temperature increase in the component caused by the recalescence can be clearly seen.
  • the desired strength and elongation values can be set, which lie between the maximum achievable strength of the structure in the first area and the values of the untreated component. Investigations have shown that suppressing the temperature rise as a result of the recalescence by further forced cooling is more of a disadvantage for the elongation values that can be achieved. An isothermal hold at the cooling temperature therefore does not seem to be advantageous. On the other hand, reheating is advantageous.
  • the second area or the second areas are additionally actively heated in this phase. This can be done, for example, by means of thermal radiation.
  • the cooling stop temperature ⁇ 2 is selected above the martensite start temperature M s .
  • the cooling stop temperature ⁇ 2 is selected below the martensite start temperature M s .
  • the heat treatment of the first and second areas is fundamentally different, with the treatment of the second area or the second areas primarily depending on the duration of the treatment.
  • the second areas are partially cooled in a first furnace to reach the austenitizing temperature downstream treatment station within a treatment time t B of a few seconds to the cooling stop temperature ⁇ 2.
  • the first area or areas are not treated specially.
  • the treatment station can optionally also be heated for this purpose.
  • the introduction of heat via convection or thermal radiation can be used.
  • the components are conveyed into a second furnace, which preferably does not have any special devices for different treatment of the different areas.
  • a second furnace which preferably does not have any special devices for different treatment of the different areas.
  • Only an oven temperature ⁇ 4 that is to say a substantially homogeneous temperature ⁇ 4 in the entire oven space, is set, which as a rule lies between the austenitizing temperature AC3 and the minimum quenching temperature.
  • An advantageous size is between 660 ° C and 850 ° C, for example. In this way, the various areas approach the temperature ⁇ 4 of the second furnace.
  • the temperature profile of the first area type approaches the temperature ⁇ 4 of the second From above.
  • the minimum cooling temperature ie the cooling stop temperature ⁇ 2 in the areas of the second type, is lower than the selected temperature ⁇ 4 of the second furnace.
  • the temperature profile of the second area approaches the temperature ⁇ 4 of the second furnace from below.
  • the first or the first areas give off heat in the second oven when they enter the second oven at a higher temperature than the internal temperature ⁇ 4 of the second oven.
  • the second or the second area absorb heat in the second furnace. All in all, this only requires a relatively small amount of heating power in the second furnace. If necessary, further heating can be dispensed with entirely during the production process. This treatment step is particularly energy-efficient.
  • a continuous oven or a batch oven such as a chamber oven, for example, can be provided as the first oven. Continuous ovens usually have a large capacity and are particularly well suited for mass production because they can be loaded and operated without great effort.
  • the treatment station has a device for rapidly cooling one or more second 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, onto the second region or regions of the steel component.
  • the second or the second region is blown onto by blowing a gaseous fluid, with water, for example in atomized form, being added to the gaseous fluid.
  • the device in an advantageous embodiment one or more atomizing nozzles.
  • a continuous furnace or a batch furnace, for example a chamber furnace, can also be provided as the second furnace.
  • the second or the second areas are cooled via thermal conduction, for example by bringing them into contact with a stamp or several stamps, which has or have a significantly lower temperature than the steel component.
  • the stamp can be made of a material that conducts heat well and / or can be cooled directly or indirectly. A combination of the types of cooling is also conceivable.
  • measures are taken in the treatment station to reduce the temperature losses in the first or the first area.
  • measures can be, for example, the attachment of a heat radiation reflector and / or the insulation of surfaces of the treatment station in the area of the first or the first area.
  • steel components each with one or more first and / or second areas, which can also have a complex shape, can be economically impressed with a corresponding temperature profile, since the different areas can be brought to the necessary process temperatures very quickly with sharp contours .
  • Clearly contoured delimitations of the individual areas can be implemented between the two areas and the warpage of the components is minimized due to the low temperature difference. Slight differences in the temperature level of the component have an advantageous effect on further processing in the press.
  • the necessary dwell times for the second area or the second areas can be implemented, for example, in a continuous furnace as a function of the component length by setting the conveying speed and the design of the furnace length. Influencing the cycle time of the heat treatment device is thus minimized, it can even be avoided entirely.
  • the selected geometry of the sub-areas can also be freely selected. Point or line areas can be displayed as well as large areas, for example. The location of the areas is also irrelevant. The second areas can be completely enclosed by the first areas or they can be located on the edge of the steel component. Even a full-surface treatment is conceivable.
  • a special orientation of the steel component to the direction of passage is not necessary for the purpose of the described method for the targeted component zone-specific heat treatment of a steel component.
  • the number of steel components treated at the same time is limited by the press hardening tool or the conveyor technology of the entire heat treatment device.
  • the process can also be used on preformed steel components. The three-dimensionally shaped surfaces of already preformed steel components only result in a higher structural effort for the representation of the counter surfaces.
  • Fig. 1 is a typical temperature curve during the heat treatment of a steel component 200 with a first area 210 and a second area 220 according to the method described.
  • the steel component 200 is heated in the first furnace 110 according to the schematically drawn temperature curve ⁇ 200, 110 during the dwell time in the first furnace t 110 to a temperature above the AC3 temperature.
  • the steel component 200 is then transferred to the treatment station 150 with a transfer time t 120.
  • the steel component loses heat in the process.
  • a second area 220 of the steel component 200 is quickly cooled, the second area 220 rapidly losing heat in accordance with the drawn-in curve ,1 220, 150.
  • the treatment time t B is equal to the dwell time t 150 in the treatment station 150.
  • the second area 220 has now reached the cooling stop temperature ⁇ 2 above the martensite start temperature M s .
  • the temperature of the first region 210 in the treatment station 150 is transferred to the second furnace 130 during the transfer time t 121 , where it continues to lose heat if its temperature is greater than the internal temperature ⁇ 4 of the second Furnace 130 is.
  • the temperature of the first area 210 of the steel component 200 changes according to the schematically drawn temperature profile ⁇ 210,130 during the dwell time t 130 , ie the temperature of the first area 210 of the steel component 200 continues to decrease slowly.
  • the temperature of the first region 210 of the steel component 200 can fall below the AC3 temperature, but this does not necessarily have to be done.
  • the temperature of the second region 220 of the steel component 200 rises again according to the drawn temperature curve Temperatur 220, 130 during the dwell time t 130 without reaching the AC3 temperature.
  • the second furnace 130 does not have any special devices for the different treatment of the various areas 210, 220. Only a furnace temperature ⁇ 4 , ie an essentially homogeneous temperature in the entire interior of the second furnace 130, is set, which is between the austenitizing temperature AC3 and the Cooling stop temperature ⁇ 2 , for example between 660 ° C and 850 ° C.
  • the various areas 210, 220 thus approach the internal temperature ⁇ 4 of the second furnace 130. If the temperature losses in the first area 210 during the dwell time t 150 in the treatment station 150 for the second area 220 are so low that the temperature does not fall below the temperature ⁇ 4 of the second furnace 130, the temperature profile ⁇ 210,130 of the first approaches Range of temperature ⁇ 4 of the second furnace 130 from above.
  • the cooling stop temperature ⁇ 2 in this embodiment is lower than the selected temperature ⁇ 4 of the second furnace 130.
  • the temperature profile ⁇ 220, 130 of the second area approaches the temperature 94 of the second furnace 130 from below. The temperature of the area 210 does not fall below the microstructure transformation start temperature ⁇ 1 .
  • the necessary dwell time t 130 for the second area 220 can be implemented as a function of the length of the steel component by setting the conveying speed and the design of the length of the second furnace 130. Influencing the cycle time of the heat treatment device 100 is thus minimized, it can even be avoided entirely.
  • the first area 220 of the steel component 200 emits heat in the second furnace 130.
  • the second area 220 of the The steel component 200 absorbs heat in the second furnace 130, the heat absorption being restricted by the heat released during the recalescence of the structure in the second region 220 of the steel component 200. All in all, this requires only a relatively small amount of heating power in the second furnace 130. If necessary, additional heating of the second furnace 130 can be dispensed with entirely. This treatment step is particularly energy-efficient.
  • 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 fed to the first furnace 110. Furthermore, the heat treatment device 100 has the treatment station 150 and the second furnace 130 arranged behind it in the main flow direction D.
  • a removal station 131 which is equipped with a positioning device (not shown), is arranged further downstream in the main flow direction D.
  • 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 is arranged, into which rejects can be placed.
  • the first furnace 110 and the second furnace 120 are preferably designed 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 fed to the first furnace 110. Furthermore, the heat treatment device 100 has the treatment station 150 and the second furnace 130 arranged behind it in the main flow direction D.
  • a removal station 131 which is equipped with a positioning device (not shown), is arranged further downstream in the main flow direction D.
  • a press hardening tool 160 in a press (not shown), in which the steel component 200 is press hardened, also follows in the main flow direction which is now still straight. Essentially at 90 ° to the removal station 131 a container 161 is arranged, in which rejects can be brought.
  • the first furnace 110 and the second furnace 120 are also preferably designed as continuous furnaces, for example roller hearth furnaces.
  • Fig. 4 shows a further variant of a heat treatment device 100 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 furnace 110 is again preferably designed as a continuous furnace.
  • the heat treatment device 100 has the treatment station 150, which in this embodiment is combined with a removal station 131.
  • the removal device 131 can, for example, have a gripping device (not shown).
  • the removal station 131 removes the steel components 200 from the first furnace 110, for example by means of the gripping device.
  • the heat treatment with the cooling of the second or the second area 220 is carried out and the steel components or the steel components 200 are at a substantially 90 ° to the axis of the first Oven 110 arranged second oven 130 inserts.
  • this second furnace 130 is preferably provided as a chamber furnace, for example with a plurality of chambers.
  • the steel components 200 are removed from the second furnace 130 via the removal station 131 and placed in an opposite press hardening tool 160 installed in a press (not shown).
  • the removal station 131 can have a positioning device (not shown).
  • a container 161 is arranged behind the removal station 131, into which reject parts can be brought.
  • 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 insufficient space in the axial direction of the first furnace 110, for example in a production hall.
  • the cooling of the second areas 220 of the steel component 200 can also take place between the removal station 131 and the second furnace 130, so that a stationary treatment station 150 is not required.
  • a cooling device for example a blower nozzle, can be integrated into the gripping device.
  • the removal device 131 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 exchanged, as in FIG 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 furnace 130 is offset in a second level above the first furnace 110.
  • the cooling of the second areas 220 of the steel component 200 can also take place between the removal station 131 and the second furnace 130, so that there is no need for a stationary treatment station 150.
  • FIG. 7 a last embodiment of the heat treatment device according to the invention is shown schematically. Compared to the in Fig. 6 In the embodiment shown, the positions of press hardening tool 160 and container 161 are reversed.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Details (AREA)
EP21162238.6A 2016-01-25 2017-01-25 Dispositif de traitement thermique Pending EP3851546A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016201024.7A DE102016201024A1 (de) 2016-01-25 2016-01-25 Wärmebehandlungsverfahren und Wärmebehandlungsvorrichtung
EP17703346.1A EP3408417B1 (fr) 2016-01-25 2017-01-25 Procédé de traitement thermique
PCT/EP2017/051514 WO2017129603A1 (fr) 2016-01-25 2017-01-25 Procédé et dispositif de traitement thermique

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP17703346.1A Division-Into EP3408417B1 (fr) 2016-01-25 2017-01-25 Procédé de traitement thermique
EP17703346.1A Division EP3408417B1 (fr) 2016-01-25 2017-01-25 Procédé de traitement thermique

Publications (1)

Publication Number Publication Date
EP3851546A1 true EP3851546A1 (fr) 2021-07-21

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EP17703346.1A Active EP3408417B1 (fr) 2016-01-25 2017-01-25 Procédé de traitement thermique
EP21162238.6A Pending EP3851546A1 (fr) 2016-01-25 2017-01-25 Dispositif de traitement thermique

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EP17703346.1A Active EP3408417B1 (fr) 2016-01-25 2017-01-25 Procédé de traitement thermique

Country Status (14)

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US (1) US11359254B2 (fr)
EP (2) EP3408417B1 (fr)
JP (1) JP6940509B2 (fr)
KR (1) KR20180117111A (fr)
CN (2) CN206204366U (fr)
AT (1) AT15722U1 (fr)
BR (1) BR112018015072B1 (fr)
DE (2) DE102016201024A1 (fr)
ES (1) ES2920485T3 (fr)
HU (1) HUE059496T2 (fr)
MX (1) MX2018009036A (fr)
PL (1) PL3408417T3 (fr)
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EP3408417A1 (fr) 2018-12-05
BR112018015072A2 (pt) 2018-12-11
US11359254B2 (en) 2022-06-14
JP2019506531A (ja) 2019-03-07
BR112018015072B1 (pt) 2022-03-03
EP3408417B1 (fr) 2022-04-13
JP6940509B2 (ja) 2021-09-29
PT3408417T (pt) 2022-07-04
CN109072325A (zh) 2018-12-21
CN206204366U (zh) 2017-05-31
AT15722U1 (de) 2018-04-15
KR20180117111A (ko) 2018-10-26
ES2920485T3 (es) 2022-08-04
PL3408417T3 (pl) 2022-08-29
MX2018009036A (es) 2019-01-10
HUE059496T2 (hu) 2022-11-28
CN109072325B (zh) 2021-04-02
DE202016104191U1 (de) 2017-04-27
DE102016201024A1 (de) 2017-07-27
US20190032163A1 (en) 2019-01-31
WO2017129603A1 (fr) 2017-08-03

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