EP3408417B1 - Wärmebehandlungsverfahren - Google Patents

Wärmebehandlungsverfahren Download PDF

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Publication number
EP3408417B1
EP3408417B1 EP17703346.1A EP17703346A EP3408417B1 EP 3408417 B1 EP3408417 B1 EP 3408417B1 EP 17703346 A EP17703346 A EP 17703346A EP 3408417 B1 EP3408417 B1 EP 3408417B1
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EP
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Prior art keywords
temperature
furnace
steel component
areas
regions
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EP17703346.1A
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German (de)
English (en)
French (fr)
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EP3408417A1 (de
Inventor
Andreas Reinartz
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Schwartz GmbH
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Schwartz GmbH
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Priority to EP21162238.6A priority Critical patent/EP3851546A1/de
Publication of EP3408417A1 publication Critical patent/EP3408417A1/de
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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
    • C21D9/0068—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
    • C21D1/56—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
    • C21D9/0062—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
    • 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

  • press hardening was developed to produce a component from hardened sheet steel.
  • Steel sheets are first heated to the austenite temperature, then placed in a press tool, quickly formed and quickly quenched to less than the martensite start temperature by the water-cooled tool.
  • This creates a hard, solid martensite structure with a strength of approx. 1,500 MPa.
  • a steel sheet hardened in this way has only a low elongation at break. Therefore, the kinetic energy of an impact cannot be sufficiently converted into heat of deformation.
  • first areas solid areas
  • second areas stretchable areas
  • high-strength components are fundamentally desirable in order to obtain low-weight components that can withstand high mechanical loads.
  • 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 vehicle are minimized.
  • modern joining processes require softened areas that enable the joining of similar or different materials. Folded, crimped or riveted connections, for example, often have to be used, which require deformable areas in the component.
  • the object of the invention is therefore to specify a method for the specific component zone-specific heat treatment of a steel component, 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 steel component is first heated above the austenitization temperature AC3 so that the structure can be completely transformed into austenite.
  • a subsequent hardening process for example the press hardening process, it is quenched so quickly that a primarily martensitic structure is formed and strengths of around 1,500 MPa are achieved.
  • the quenching is advantageously carried out from the fully austenitized microstructure.
  • cooling must take place at least at the lower critical cooling rate once the microstructure start temperature ⁇ 1 has been fallen below, at which microstructure transformations can start.
  • ⁇ 1 For example around 660°C should be considered as the limit ⁇ 1 for the material 22MnB5 usually used for press hardening.
  • This temperature curve is common in the press hardening process, particularly for fully hardened components.
  • a second area or several second areas are first also heated to above the austenitization temperature AC3 so that the structure can be completely transformed into austenite. It is then cooled as quickly as possible within a treatment time t B down to a cooling stop temperature ⁇ 2 .
  • the martensite start temperature for 22MnB5 is around 410 °C. A slight transient in temperature ranges below the martensite start temperature is also possible. There is no further rapid cooling afterwards, so that a predominantly bainitic structure is formed. This structural change does not take place suddenly, but requires a treatment period. The conversion is exothermic.
  • the cooling stop temperature ⁇ 2 the temperature increase in the component caused by 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 recalescence through further, forced cooling is rather disadvantageous for the achievable strain values. Holding isothermally at the cooling temperature therefore does not appear to be advantageous. Reheating, on the other hand, is beneficial.
  • the second area or the second areas are additionally actively heated in this phase. This can be done, for example, by 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 being dependent on the treatment duration.
  • second areas in a first furnace are partially cooled down to the cooling stop temperature ⁇ 2 within a treatment time t B of a few seconds in order to reach the austenitization temperature.
  • the first area or areas are not treated in a special way.
  • the treatment station can also be heated for this purpose.
  • the introduction of heat via convection or heat radiation can be used.
  • the components are transferred to a second oven, which preferably does not have specific devices for treating the different areas differently.
  • a furnace temperature ⁇ 4 ie an essentially homogeneous temperature ⁇ 4 in the entire furnace space, is set, which generally lies between the austenitizing temperature AC3 and the minimum quenching temperature.
  • An advantageous value is between 660°C and 850°C, for example. In this way, the different areas approach the temperature ⁇ 4 of the second furnace.
  • the temperature profile of the first zones kind approaches the temperature ⁇ 4 of the second oven 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 areas approaches Temperature ⁇ 4 of the second oven from below.
  • the first area or 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 second areas absorb heat in the second furnace. Overall, this requires only 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 furnace or a batch furnace, such as a chamber furnace, for example, can be provided as the first furnace. Continuous furnaces 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 can have a device for rapid cooling of one or more second regions of the steel component.
  • the device preferably has a nozzle for blowing a gaseous fluid, for example air or an inert gas such as nitrogen, onto the second area or areas of the steel component.
  • the second or the second regions are blown on by blowing on them with a gaseous fluid, water being added to the gaseous fluid, for example in nebulized form.
  • the device has one or more atomizing nozzles. Blowing on with the gaseous fluid mixed with water increases the heat dissipation from the second region or regions. With the evaporation of the water on the steel component, a large heat dissipation and a high energy transport is achieved.
  • 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 area(s) is/are cooled via heat conduction, for example by bringing it into contact with one or more stamps, one or more stamps being significantly lower Has or have temperature than the steel component.
  • the stamp can be made of a material with good thermal conductivity and/or be cooled directly or indirectly. A combination of the types of cooling is also conceivable.
  • Such measures can be, for example, the attachment of a thermal radiation reflector and/or the insulation of surfaces of the treatment station in the area of the first area or the first areas.
  • Heat treatment device which is not claimed, steel components with one or more first and / or second areas, which can also be shaped complex, can be economically imprinted 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 realized between the two areas and the distortion of the components is minimized due to the small temperature difference. Small spreads in the temperature level of the component have an advantageous effect during 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 depending on the component length by adjusting the conveying speed and the design of the furnace length. An influence on the cycle time of the heat treatment device is minimized in this way, it can even be avoided entirely.
  • the method shown and with the corresponding heat treatment device which is not claimed, to set almost any number of second areas, which can also have different strength and elongation values within a steel component.
  • the selected geometry of the partial areas can also be freely selected. Dotted or line-shaped areas can be displayed as well as, for example, large-area areas. The location of the areas is also irrelevant.
  • the second areas can be completely enclosed by the first areas or can be located at 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 for the purpose of the method according to the invention for the targeted heat treatment of a steel component for individual component zones not mandatory.
  • 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.
  • 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 design effort for the representation of the counter surfaces.
  • In the 1 12 is a typical temperature curve during the heat treatment of a steel component 200 having a first region 210 and a second region 220 according to the inventive method.
  • the steel component 200 is heated in the first furnace 110 according to the temperature curve ⁇ 200,110 shown schematically during the residence 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 . In the process, the steel component loses heat.
  • a second region 220 of the steel component 200 is rapidly cooled, with the second region 220 rapidly losing heat according to the curve ⁇ 220,150 shown.
  • the treatment time t B is equal to the residence 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 area 210 in the treatment station 150 has also fallen according to the temperature profile ⁇ 210,150 shown , with the first area 210 not being located in the area of the cooling device.
  • the steel component 200 is transferred into the second furnace 130 during the transfer time t 121 , during which it continues to lose heat if its temperature is greater than the internal temperature ⁇ 4 of the second furnace 130 .
  • the temperature of the first region 210 of the steel component 200 changes according to the temperature profile ⁇ 210,130 shown schematically during the dwell time t 130 , ie the temperature of the first region 210 of the steel component 200 slowly continues to decrease.
  • 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 happen.
  • the temperature of the second region 220 of the steel component 200 increases again according to the temperature profile ⁇ 220,130 shown during the dwell time t 130 without reaching the AC3 temperature.
  • the second oven 130 does not have any specific devices for treating the different areas 210, 220 differently only a furnace temperature ⁇ 4 , ie an essentially homogeneous temperature in the entire interior of the second furnace 130, is set, which lies between the austenitization temperature AC3 and the cooling stop temperature ⁇ 2 , for example between 660° C. and 850° C. In this way, the various areas 210 , 220 approach the internal temperature ⁇ 4 of the second oven 130 .
  • the temperature profile ⁇ 210,130 approaches the first Range of temperature ⁇ 4 of the second oven 130 from above.
  • the cooling stop temperature ⁇ 2 is lower than the selected temperature ⁇ 4 of the second oven 130.
  • the temperature profile ⁇ 220,130 of the second region approaches the temperature 94 of the second oven 130 from below. The temperature of region 210 does not fall below the fabric transformation start temperature ⁇ 1 .
  • the necessary dwell time t 130 for the second region 220 can be implemented as a function of the length of the steel component by adjusting the conveying speed and designing the length of the second furnace 130 . An influencing of the cycle time of the heat treatment device 100 is thus minimized, it can even be completely avoided.
  • the first region 220 of the steel component 200 gives off heat in the second furnace 130 .
  • the second region 220 of the steel component 200 absorbs heat in the second furnace 130, the heat absorption being limited by the heat released during the recalescence of the microstructure in the second region 220 of the steel component 200. Overall, this requires only a relatively small amount of heat output in the second oven 130. If necessary, additional heating of the second oven 130 can be dispensed with entirely. This treatment step is particularly energy-efficient.
  • Figure 12 shows a heat treatment device 100, not claimed, in a 90° arrangement.
  • Heat treatment device 100 has a loading station 101 via which the 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. Arranged further downstream in the main flow direction D is a removal station 131 which is equipped with a positioning device (not shown). The main flow direction now bends by essentially 90° in order to be followed by a press-hardening tool 160 in a press (not shown), in which the steel component 200 is press-hardened. In the axial direction of the first furnace 110 and the second furnace 130 there is a container 161 into which rejects can be placed. In this arrangement, the first furnace 110 and the second furnace 120 are preferably designed as continuous furnaces, for example roller hearth furnaces.
  • Figure 12 shows a heat treatment apparatus 100, not claimed, in a straight configuration.
  • Heat treatment device 100 has a loading station 101 via which the 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. Arranged further downstream in the main flow 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, follows in the main flow direction, which is now further straight. A container 161 into which rejects can be placed is arranged essentially at 90° to the removal station 131 . In this arrangement, the first furnace 110 and the second furnace 120 are also preferably designed as continuous furnaces, for example roller hearth furnaces.
  • FIG. 1 shows another variant of a heat treatment device 100 which is not claimed.
  • the heat treatment device 100 again has a loading station 101 via which the steel components are fed to the first furnace 110 .
  • the first oven 110 is with this one Execution again preferably designed as a continuous furnace.
  • the heat treatment device 100 has the treatment station 150 which is combined with a removal station 131 in this example.
  • the removal device 131 can have a gripping device (not shown), for example.
  • 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 regions 220 is carried out and the steel component or the steel components 200 are in a substantially 90 ° to the axis of the first Furnace 110 arranged second furnace 130 inserts.
  • this second furnace 130 is preferably provided 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 in an opposite press-hardening tool 160 built into 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 rejects can be placed.
  • the main flow direction D describes a deflection of essentially 90°.
  • no second positioning system for the treatment station 150 is required.
  • this example 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 cooling of the second regions 220 of the steel component 200 can also take place between the removal station 131 and the second furnace 130, so that no stationary treatment station 150 is required.
  • a cooling device for example a blowing nozzle, can be integrated into the gripping device.
  • the removal device 131 ensures that the steel component 200 is transferred 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 figure 5 to see.
  • the main flow direction D describes two deflections of essentially 90°.
  • a heat treatment device which is not claimed, according to FIG 6 an: Compared to the in 4
  • the second oven 130 is offset to a second level above the first oven 110 .
  • the cooling of the second regions 220 of the steel component 200 can likewise take place between the removal station 131 and the second furnace 130, so that no stationary treatment station 150 is required.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Details (AREA)
EP17703346.1A 2016-01-25 2017-01-25 Wärmebehandlungsverfahren Active EP3408417B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21162238.6A EP3851546A1 (de) 2016-01-25 2017-01-25 Wärmebehandlungsvorrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016201024.7A DE102016201024A1 (de) 2016-01-25 2016-01-25 Wärmebehandlungsverfahren und Wärmebehandlungsvorrichtung
PCT/EP2017/051514 WO2017129603A1 (de) 2016-01-25 2017-01-25 Wärmebehandlungsverfahren und wärmebehandlungsvorrichtung

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP21162238.6A Division-Into EP3851546A1 (de) 2016-01-25 2017-01-25 Wärmebehandlungsvorrichtung
EP21162238.6A Division EP3851546A1 (de) 2016-01-25 2017-01-25 Wärmebehandlungsvorrichtung

Publications (2)

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EP3408417A1 EP3408417A1 (de) 2018-12-05
EP3408417B1 true EP3408417B1 (de) 2022-04-13

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EP17703346.1A Active EP3408417B1 (de) 2016-01-25 2017-01-25 Wärmebehandlungsverfahren
EP21162238.6A Pending EP3851546A1 (de) 2016-01-25 2017-01-25 Wärmebehandlungsvorrichtung

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US (1) US11359254B2 (pt)
EP (2) EP3408417B1 (pt)
JP (1) JP6940509B2 (pt)
KR (1) KR20180117111A (pt)
CN (2) CN206204366U (pt)
AT (1) AT15722U1 (pt)
BR (1) BR112018015072B1 (pt)
DE (2) DE102016201024A1 (pt)
ES (1) ES2920485T3 (pt)
HU (1) HUE059496T2 (pt)
MX (1) MX2018009036A (pt)
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CN109072325B (zh) 2021-04-02
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PT3408417T (pt) 2022-07-04
US11359254B2 (en) 2022-06-14
CN109072325A (zh) 2018-12-21
AT15722U1 (de) 2018-04-15
MX2018009036A (es) 2019-01-10
ES2920485T3 (es) 2022-08-04
JP6940509B2 (ja) 2021-09-29
HUE059496T2 (hu) 2022-11-28
DE202016104191U1 (de) 2017-04-27
US20190032163A1 (en) 2019-01-31
KR20180117111A (ko) 2018-10-26
DE102016201024A1 (de) 2017-07-27
EP3408417A1 (de) 2018-12-05
EP3851546A1 (de) 2021-07-21
PL3408417T3 (pl) 2022-08-29
CN206204366U (zh) 2017-05-31
WO2017129603A1 (de) 2017-08-03

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