• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method and a device for the targeted component zone-specific heat treatment of sheet metal components. The method for impressing a temperature profile on a sheet steel component (200), wherein the steel sheet component (200) in one or more first regions (21 0) has a temperature below the AC3 temperature and a one or more second region (220) a temperature above the AC3 temperature is characterized in that the steel sheet member (200) is first heated in a production furnace (110) to a temperature above the AC3 temperature, the steel sheet member (200) is subsequently transferred to a thermal post-treatment station (150), wherein it may cool to a temperature below the AC3 temperature during transfer, and selectively maintain one or more first portions (210) of the sheet steel component (200) at a temperature below the AC3 temperature or further cooled in the aftertreatment station (150) and one or more second regions (220) of the sheet steel component (200) to a temperature above be heated half of the AC3 temperature.
    公开号:AT15097U1
    申请号:TGM46/2015U
    申请日:2014-07-01
    公开日:2016-12-15
    发明作者:
    申请人:Schwartz Gmbh；
    IPC主号:
    专利说明:

    Description [0001] The invention relates to a method and a device for the targeted component zone-specific heat treatment of sheet metal components.
    In the art, in many applications in different industries, the desire for high strength sheet metal parts with low part weight. For example, in the automotive industry, efforts are being made to reduce the fuel consumption of automobiles and to reduce CO 2 emissions, while at the same time increasing occupant safety. There is therefore a rapidly increasing demand for body components with a favorable strength to weight ratio. These components include, in particular, A and B pillars, side impact beams in doors, sills, frame members, bumper arms, floor and roof cross members, front and rear side members. In modern motor vehicles, the body shell with a safety cage usually consists of a hardened steel sheet with about 1,500 MPa strength. In many cases Al-Si-coated steel sheets are used. For the production of a component from hardened steel sheet the process of the so-called press hardening was developed. Steel sheets are first heated to austenite temperature between 850 ° C and 950 ° C, then placed in a press tool, quickly formed and quickly quenched by the water-cooled tool to martensite temperature of about 250 ° C. This results in hard, firm martensite with about 1.500MPa strength. However, such a hardened steel sheet has only about 6- 8% elongation at break, which is disadvantageous in specific areas in the event of collision of two vehicles, especially in a side impact. The kinetic energy of the penetrating vehicle can not be converted into deformation heat. Rather, in this case, the component will break brittle and also threatens to injure the occupants.
    For the automotive industry, it is therefore desirable to obtain body parts that have several different strain and strength zones in the component, so that very solid areas on the one hand and very elastic areas on the other hand are present in one component. The general demands on a production plant should continue to be respected: so there should be no cycle time loss to the mold-hardening system, the entire system should be universally used without restrictions and can be quickly converted to customer-specific. The process should be robust and economical and the production plant need only minimal space. The shape and edge accuracy of the component should be so high that hard trimming can be largely eliminated in order to save material and labor.
    To produce a component with regions of different hardness and ductility different steels can be welded together so that non-hardenable steel is present in the soft and hardenable steel in the hard zones. In a subsequent hardening process, the desired hardness profile can be achieved over the component. The disadvantages of this method lie in the occasionally unsafe weld in an Al-Si-coated approximately 0.8-1.5mm thick sheet metal commonly used for body parts, the rugged hardness transition there and in the increased cost of the sheet due to the additional welding fabrication step , Occasionally, tests have failed due to breakage near the weld, so the process can not be said to be robust. In addition, the process is limited in complex geometries.
    From the German patent DE 10 2007 057 855 B3 a method is known in which a molded component in the form of a band made of a strip material with an AISi coating provided high-strength boron steel severed board initially heated completely homogeneous to such a temperature and a certain Time is kept at this temperature level, that forms a diffusion layer as a corrosion or scale protection layer, wherein material from the coating diffuses into the base material. The heating temperature is about 830 ° C to 950 ° C. This homogeneous heating is carried out in a first zone of a continuous furnace having a plurality of temperature zones. Following this process step, a region of the first type of the board in a second
    Cooled down the zone of the furnace to a temperature at which austenite decomposes. This takes place at about 550 ° C to 700 ° C. This lowered temperature level is maintained for a certain time, so that the decomposition of austenite proceeds properly. Simultaneously with the local cooling of the area of the first type of board, the temperature in a third zone of the furnace is kept just high enough in at least one area of the second type that sufficient martensite portions can still be formed in the subsequent hot forming in a corresponding press. This temperature is 830 ° C to 950 ° C. When cooling the area of the first type, this area of the board can be brought into contact with cooling jaws for a short time.
    However, with this method it is only possible to subject relatively simple and large-area geometries with usually only two different areas of a different heat treatment. Complex geometries, such as, for example, ductile spot weld edges formed almost anywhere in the space of an otherwise high-hardness B-pillar, can not be appropriately heat treated by this method. In addition, the temperatures of the individual zones of the furnace must be controlled very accurately, with continuous furnaces on the other hand for economic reasons are usually heated with gas burners, which, however, can not regulate the temperatures of the individual zones with the required accuracy in a simple and inexpensive way.
    European patent application EP 2 497 840 A1 discloses a furnace system and a method for targeted component zone-specific heat treatment of sheet metal components. The furnace system includes a common, universal production furnace for heating the steel sheet parts to a temperature close to but below the AC3 temperature, that is, the temperature at which the transformation of the ferrite into austenite terminates, the furnace system further comprising a profiling furnace having at least one Level. The at least one level has an upper and a lower part, as well as a product-specific intermediate flange inserted into a corresponding receptacle, wherein the product-specific intermediate flange is designed to give the component a predetermined temperature profile with temperatures above the AC3 temperature for areas to be hardened and under the AC3 temperature for softer areas. The impressing of the temperature profile is done by means of thermal radiation. Since the method provides to heat the components in the production furnace only to a temperature below the AC3 temperature and to introduce the heat for the heating of defined areas to a temperature above the AC3 temperature in a later process step in the profiling oven is a very accurate temperature control Not required in the production furnace, so that the disadvantage of the lower controllability of gas burners over that of electric heaters in favor of the economy for the cheaper energy gas can be accepted. The disadvantage of this method is that the regions of different temperature are not exactly separable. In addition, the heat exchange via radiation happens relatively slowly, so that several Profilieröfen must be operated in parallel in order to exploit the potential capacity of the continuous furnace can.
    German Offenlegungsschrift DE 10 2012 102 194 A1 discloses a furnace installation and a method for operating a furnace installation, wherein a radiant heat source is arranged within the furnace installation and a metallic component can be thermally treated within the furnace installation with two temperature ranges which are different from one another. Furthermore, in the furnace system, a stream of air is circulated in a second area, with which a second temperature range is thermally treated due to forced convection. In this case, the first region of the metallic component is heated by means of radiant heat to at least AC3 and / or maintained in its temperature to at least AC3 and that the second region is cooled by convection from a temperature of at least AC3 to a temperature below AC3 or that the second region is heated by convection to a temperature below AC3, wherein the resulting different temperature zones are thermally separated from each other by a separator. It is difficult to thermally separate the temperature ranges in the oven from each other. The separation device must be adapted to the contour of the metallic component in order to enable effective temperature separation. As a result, the oven is replaceable only after a conversion for other component geometries, with a furnace conversion by the size of the furnace, in particular the size of a roller hearth furnace, consuming.
    The object of the invention is to provide a method for the targeted heat treatment of sheet metal components, wherein the disadvantages described above are minimized. Furthermore, it is an object of the invention to provide a heat treatment device for targeted component zone-specific heat treatment of sheet metal components.
    According to the invention this object is achieved by a method having the features of independent claim 1. Advantageous developments of the method will become apparent from the dependent claims 2 and 3. The object is further achieved by heat treatment apparatus according to claim 4. Advantageous developments of the heat treatment device will become apparent from the dependent claims 5-11.
    The inventive method for impressing a temperature profile on a sheet steel component, wherein the sheet steel component in one or more first regions, a temperature below the AC3 temperature and a one or more second region is a temperature above the AC3 temperature aufprägbar is characterized in that the steel sheet component is first heated in a production furnace to a temperature above the AC3 temperature, the steel sheet component is subsequently transferred to a thermal aftertreatment station where it can cool to a temperature below the AC3 temperature during transfer, and optionally in the aftertreatment station the one or more first portions of the sheet steel component are maintained at a temperature below the AC3 temperature or further cooled and the one or more second portions of the sheet steel component are heated to a temperature above the AC3 temperature. It is procedurally easy to heat the entire sheet steel component, which may be a substantially flat sheet steel plate or a spatially extended sheet steel component or steel sheet profile, to a temperature above the AC3 temperature. The AC3 temperature is a temperature dependent on the material used for the sheet steel component, for example 873 ° C. During the transfer to the thermal aftertreatment station, the steel sheet component cools by natural convection in the ambient air. If the sheet steel component in the production furnace was only heated to the AC3 temperature or only to a temperature just above the AC3 temperature, it cools during the transfer to a temperature below the AC3 temperature. In the thermal aftertreatment station, a temperature above the AC3 temperature is now impressed on the second region, while the first region is further cooled down or at least kept at its temperature after the transfer. Of course, the sheet steel component may have a plurality of first and second regions. The provided with a temperature profile sheet steel component can then be supplied to the pressing tool and press-hardened there.
    The first region, which should have a high ductility in the finished component, is cooled to a recrystallization temperature below the AC3 temperature, while a second region, which should have a particularly high hardness in the finished component, at a temperature above the AC3 Temperature is maintained or reheated. In this case, the cooling from the temperature imposed by the production furnace above AC3 during the transfer of the sheet steel component from the production furnace in the thermal treatment station or in the thermal treatment station so slow that the structure can recrystallize. The AC3 temperature, like the recrystallization temperature, is alloy dependent. In the materials commonly used for vehicle body components, the AC3 temperature is around 870 ° C, while the recrystallization temperature, at which ferrite-pearlitic structure sets, is around 800 ° C.
    If coated sheet steel components are processed in which the coating is alloyed with the substrate, as in the case of AlSi-coated steel sheets, for example, the steel sheet component in the production furnace can also be heated to a diffusion temperature of, for example, 950 ° C.
    The production furnace does not have to be adapted to the geometry of the steel sheet component to be treated in the inventive method, in particular, no component geometry-dependent separating device must be provided in the oven. On the contrary, a standard oven can be used, which does not have to be converted during a production change. In particular, a standard roller hearth furnace can be used. Oven temperature control does not impose any increased quality requirements as the entire sheet steel component is heated to a temperature above the AC3 temperature. For economic reasons, it is desirable to exceed the AC3 temperature as little as possible, and for procedural reasons, it is quite possible to exceed the AC3 temperature by a greater deviation, for example several decades.
    In an advantageous embodiment, the one or more first areas of the sheet steel component in the thermal post-treatment station are cooled by convection. This can be natural or forced convection.
    For example, the first area of the sheet steel component can be targeted in each case with a gas stream which is colder than the temperature of this region of the sheet steel component at the beginning of its transfer to the thermal treatment station. The gas stream may be a gas stream having a composition corresponding to the ambient air. However, it is also possible to use another gas, for example an inert gas. The gas stream may be generated in a blower device, wherein the blower device may be located inside or outside the thermal aftertreatment station. Alternatively, the one or more first regions of the sheet steel component in the thermal post-treatment station can also be cooled by means of radiation or by heat conduction. A combination of all or some of the cooling options is conceivable. In this case, a heat radiation absorbing surface can be provided at the appropriate place in a cooling device for the dissipation of heat from the sheet steel component by means of radiation. For the heat dissipation by means of heat conduction, a surface can be provided at a corresponding point in a cooling device which is at least partially brought into contact with each of the one or more first regions of the sheet steel component.
    It has proved to be advantageous if the one or more second regions of the sheet steel component are heated in the thermal post-treatment station by means of radiation. As a source of radiation to offer electrical or powered by fuels such as gas or oil infrared heaters. Alternatively, the one or more second regions of the sheet steel component may also be heated by conduction, by convection, or electrically by induction or electrical resistance, and by a combination of all or some of these methods. For heating by means of heat conduction, a surface can be provided at a corresponding point in a heating device which can be brought at least partially into contact with each of the one or more second regions of the sheet steel component. For heating by convection, the one or more second regions of the sheet steel component can be targeted in each case with a gas stream having a temperature above the AC3 temperature of the sheet steel component. The gas stream may be a gas stream having a composition corresponding to the ambient air. However, it is also possible to use another gas, for example an inert gas. For induction heating, an induction coil may be provided at the appropriate location of the heater.
    A heat treatment apparatus according to the invention comprises a production furnace for heating the sheet steel component to a temperature above the AC3 temperature and a thermal treatment station for impressing a temperature profile on the sheet steel component, wherein the sheet steel component in one or more first areas, a temperature below the AC3 temperature and in one or more second regions, a temperature above the AC3 temperature can be imposed. In this case, the profiling device has a cooling device for cooling the one or more first regions and a heating device for heating the one or more second regions of the sheet steel component. It has proved to be advantageous if the cooling device comprises a fan for a gas flow and / or a heat radiation absorbing surface and / or a surface which is at least in contact with a part of the one or more first regions of the sheet steel component in contact.
    Furthermore, it has proved to be advantageous if the heating device comprises a heat radiation device and / or a surface which can be brought into contact with at least one part of the one or more second regions and / or a blower device for generating a gas flow and / or an induction coil.
    In an advantageous embodiment, the heat treatment device has a separating device for thermal separation of the first region from the second region of the sheet steel component. Suitable embodiments of the separation device are familiar to those skilled in the art.
    In a further advantageous embodiment, the heat treatment device has a handling device which is arranged between the production furnace and the thermal treatment station and which is adapted to spend the sheet steel component of the production furnace in the thermal treatment station. The handling device may include, for example, an industrial robot. The handling device has the advantage that the hot steel sheet components can be safely moved. In addition, it is possible with the handling device to keep the transfer times of the steel sheet components constant, so that the entire process of the heat treatment is reproducible. Furthermore, the steel sheet can be positioned with a handling device very accurate and reproducible in the profiling, whereby the process quality is further maximized.
    It has been found to be advantageous if the heat treatment device has a plurality of thermal treatment stations. By using a production furnace of appropriate capacity at the same time, by using a plurality of thermal post-treatment stations, the output of the heat treatment apparatus can be increased.
    Advantageously, in one embodiment, a continuous furnace or a batch furnace is provided as a production furnace. Continuous furnaces usually have a large capacity and are particularly well suited for mass production, since they can be fed and operated without much effort.
    In a further advantageous embodiment, a gas-fired or electrically heated production furnace is provided. Gas firing is in most cases the most economical way of heating a production furnace.
    The thermal aftertreatment device may comprise an upper part and a lower part in one embodiment, wherein the upper part is movable relative to the lower part and wherein the sheet steel component between upper part and lower part is clamped. The upper part and / or the lower part have first and second zones which can be temperature-controlled to different temperatures.
    Due to the mobility of upper part to lower part, it is possible to insert the sheet steel component in the thermal treatment station and then bring the upper and / or lower part so close to the sheet steel component that a heat transfer between the upper and lower part on the one hand the sheet steel component takes place , Upper and / or lower part have differently tempered first and second zones, so that different temperatures can be impressed on the different first and second regions of the sheet steel component.
    In a further embodiment, the steel sheet component is at least partially in contact with the upper part and the lower part in the clamped state. Due to the mobility of upper part to lower part, it is possible to insert the sheet steel component in thermal treatment station and then bring the sheet steel component at least partially in contact with the upper and lower part. The contact leads to the heat exchange by heat conduction between the surfaces of the upper or lower part with the sheet steel component.
    In an alternative embodiment, there is no contact between the upper and / or lower part on the one hand and the sheet steel component. Due to the mobility of upper part to lower part lower and / or upper part come so close to the sheet steel component, that an effective heat transfer by heat radiation and / or convection takes place, but remain spaced from her.
    When coated steel sheets are processed in which the coating is alloyed with the substrate, such as AlSi-coated steel sheets, the temperature- and time-dependent diffusion process of the coating into the substrate in the production furnace can be started while a residual diffusion time is spent in the thermal aftertreatment station.
    With the method according to the invention and the heat treatment apparatus according to the invention, steel sheet components having a plurality of first and / or second regions, which may also be complexly formed, can be economically stamped with a corresponding temperature profile, since the first and second zones of the thermal treatment station are better thermally separable from one another and there is a severer treatment of the first and second areas of the sheet steel component, as is possible in the production furnace.
    The upper part and / or the lower part may have a flat contact surface. This embodiment can be advantageously used for the heat treatment of flat sheet steel blanks.
    In an alternative embodiment, the upper part and / or the lower part on a curved contact surface in space. Advantageously, the curvature of the contact surface or of the contact surfaces of the spatial shape of the sheet steel component is adapted if curved steel sheet components are to be heat-treated in space.
    In one embodiment, at least one of the different zones in the Unterbezieh or upper part is liquid-temperature. By means of liquid temperature control, not only heat can be added, but also dissipated, so that the zones can both be heated and also selectively cooled. As suitable liquids, for example, heat transfer oils or salt melts can be used.
    Alternatively or in combination, at least one of the zones can also be electrically tempered. The cooling of a zone is done by slow cooling against the environment, this zone is not heated in this case. Advantageously, such a zone should not be thermally insulated from the environment. In this case, the electrical heating can be realized for example via induction or electrical resistance.
    In another embodiment, at least one of the zones is gas-heated. Gas may already be available for the heating of the production furnace, so that no additional expense for the gas heating is spent. Gas heating can be more economical than electric heating.
    The different Temperierungsarten can also be combined. For example, one zone may be electrically heated, while another is liquid-tempered. The electric heater has the advantage of fast response, while the liquid temperature control offers the advantage of targeted cooling.
    If certain zones have to be heated and other zones simultaneously cooled, such an embodiment offers particularly great advantages.
    At least one of the zones of the lower and / or upper part may be thermally insulated from another of the zones in the lower and / or upper part. The insulation may consist of an introduced intermediate layer, for example of a thermosetting plastic or of a ceramic material. But it is also alternatively or additionally possible to provide a gap for isolation between the zones. This gap can be filled in the simplest case with air. However, a greater isolation effect is achieved with a gap in which a suppression prevails.
    In addition, the thermal aftertreatment stations may have a product-specific adapter. This adapter can be designed, for example, as a stop for the sheet steel component, so that the sheet steel component can be inserted with great reproducibility in the thermal treatment station. This is particularly important for increasing the quality if the steel sheet component is to have small first regions which should have a high ductility in the finished component, as is the case, for example, with sheet steel body parts for the automobile industry, which are spot-welded in the following manufacturing steps. The spot welds should usually have high ductility, while in many applications the surrounding material should have high hardness. By a suitable stop, the position accuracy of the sheet steel component in the thermal post-treatment station is increased, whereby the position accuracy of the regions of different temperature is increased in the sheet steel component.
    Further advantages, features and expedient developments of the invention will become apparent from the dependent claims and the following description of preferred embodiments with reference to the figures.
    2 shows a thermal treatment station according to the invention in a side section. FIG. 3 shows the lower part of a thermal after-treatment station according to the invention with a sheet-steel component inlaid in. [0042] FIG FIG. 4 shows an example of another steel sheet component in a top view after carrying out the method according to the invention. FIG. 1 shows a heat treatment apparatus 100 according to the invention in a plan view. A sheet steel component 200 is provided by a first handling device 130 on a run-in table 120 of the heat treatment device 100. From the run-in table 120, sheet steel components 200 pass into the production furnace 110 designed as a continuous furnace and pass through it in the direction of the arrow, with their temperature rising to a temperature above the AC3 temperature. The production furnace is heated with gas burners whose flames 111 act into the furnace space. As viewed in the direction of passage behind the production furnace 110, there is an outlet table 121 onto which the heated steel sheet components 200 pass after passing through the production furnace 110. From there, the steel sheet members 200 are transferred from a second handling device 131 to one of three thermal aftertreatment devices 150. The steel sheet members 200 cool the ambient air by natural convection to a temperature level below their AC3 temperature.
    In the figure, three thermal aftertreatment stations 150 are shown, which are arranged side by side in a circular arc. This arrangement ensures that all three thermal aftertreatment stations 150 can be charged by the second handling device 131. It is also possible to provide more or fewer thermal aftertreatment stations 150. The number of thermal aftertreatment stations 150 to be advantageously provided depends on the ratio of the cycle times of the production furnace 110 and the thermal aftertreatment station 150, wherein the cycle times depend on the temperatures to be achieved and thus depend inter alia on the processed material of the sheet steel component 200. In addition Also, another arrangement of the plurality of thermal aftertreatment stations 150 possible. It is conceivable, for example, an arrangement in which a plurality of thermal post-treatment stations 150 are arranged vertically one above the other.
    FIG. 2 shows a thermal after-treatment station 150 according to the invention in a side section. The thermal post-treatment station has an upper part 160 and lower part 170, wherein upper part 160 and lower part 170 are vertically movable relative to one another, as the arrows are intended to indicate. If upper part 160 and lower part 170 are moved vertically away from one another, the thermal after-treatment station 150 is opened and a sheet steel component 200 can be inserted between the two parts 160, 170. In the figure, the thermal post-treatment station 150 is shown in the closed state, wherein a steel sheet member 200 between the upper part 160 and lower part 170 is clamped. The top 160 has first zones 161 having a temperature below the AC3 temperature and a second zone 162 having a temperature above the AC3 temperature. Likewise, the base 170 has a first zone 171 having a temperature below the AC3 temperature and a second zone 172 having a temperature above the AC3 temperature. The zones 161, 162 in the upper part 160 are separated from one another by a thermal insulation 167. Likewise, the zones 171, 172 in the lower part 170 are separated from one another by a thermal insulation 177. In addition, the outer surfaces of upper part 160 and lower part 170 each have an insulating layer 166, 176. These insulations serve for thermal separation and may consist of suitable duroplastic or ceramic materials. As thermal separation between the first zones 161, 171 and the second zones 162, 172, air gaps or evacuated interspaces, in each case between the zones, in which a negative pressure prevails up to the vacuum, come into consideration.
    In the figure, each flat contact surfaces 165, 175 of the upper part 160 and lower part 170 are shown. Such flat contact surfaces 165, 175 are suitable for the heat treatment of substantially flat sheet steel components 200. If the steel sheet components 200 to be treated are curved in space, the contact surfaces 165, 175 can be adapted to such a curvature, so that they too can be curved in space.
    FIG. 3 shows the lower part 170 of a thermal after-treatment station 150 according to the invention with inserted sheet-steel component 200 in a plan view. The sheet steel component 200 has first regions 210, which should have a high ductility in the later finished part. If the sheet steel component 200 is a vehicle body part, these first regions 210 may, for example, be the areas where the later finished part is connected to the rest of the vehicle body by means of spot welding. These first regions 210 rest on first zones 171 of the lower part 170, which have a temperature below the AC3 temperature, for example a temperature of approximately 600 ° C. Second regions 220 of the sheet steel component 200, which are to have a high hardness in the later finished part, in contrast, rest on second zones 172 of the lower part 170, which have a temperature above the AC3 temperature, for example 900 ° C. The first zones 171 are thermally isolated from the second zones 172 (not shown in the figure). Due to the thermal insulation 177 of the zones 171, 172 against each other, the thermal separation of the zones 171, 172 is maximized against each other, which also small-scale different first and second regions 210, 220 can be realized in the sheet steel component 200. Furthermore, the lower part 170 has thermal insulation 176 on its outer surfaces.
    4 shows an example of another sheet steel component 200, here a B-pillar 200 for vehicles in plan view after execution of the method according to the invention. The B pillar is the connection between the vehicle floor and the vehicle roof in the middle of the passenger compartment. The pillars in the vehicle, including the B-pillar, have the life-supporting task of stabilizing the passenger compartment against vertical deformation in the event of an accident involving vehicle overturning. Much more important is the absorption of forces in the side impact, so that the vehicle occupants remain intact. In order to be able to accomplish this task, the B-pillar 200 has first regions of high ductility 210 and second regions of high hardness 220. The B-pillar 200 has been provided with the first regions 210 and second regions 220 shown here by means of the method according to the invention in the heat treatment device according to the invention, the second regions 220 additionally being tempered.
    The embodiments shown here are only examples of the present invention and therefore should not be understood as limiting. Alternative embodiments contemplated by one skilled in the art are equally within the scope of the present invention. REFERENCE LIST: 100 heat treatment device 110 production furnace 111 flame 120 inlet table 121 outlet table 130 first handling device 131 second handling device 150 thermal aftertreatment station 160 top 161 first zone within the top 162 second zone within the top 165 contact surface of the top 166 Outer isolation of the top 167 zone isolation in the top 170 bottom 171 first zone inside the lower part 172 second zone inside the lower part 175 contact surface of the lower part 176 outer insulation of the lower part 177 zone insulation in the lower part 200 sheet steel component 210 first region 220 second region
    权利要求:
    Claims (11)
    [1]
    claims
    A method of imparting a temperature profile to a sheet steel component (200), wherein the sheet steel component (200) in one or more first regions (210) has a temperature below the AC3 temperature and a one or more second region (220) has a temperature above that AC3 temperature is characterized in that the steel sheet member (200) is first heated in a production furnace (110) to a temperature above the AC3 temperature, the steel sheet member (200) is then transferred to a thermal post-treatment station (150) it may cool to a temperature below the AC3 temperature during transfer, and selectively maintain or further cool the one or more first portions (210) of the sheet steel component (200) at the post-treatment station (150) and the one or more second regions (220) of the sheet steel component (200) to a temperature be heated above the AC3 temperature.
    [2]
    2. The method according to claim 1, characterized in that the one or more first regions (210) of the sheet steel component (200) are cooled in the thermal post-treatment station (150) by means of convection and / or by means of radiation and / or by means of heat conduction.
    [3]
    3. The method according to any one of the preceding claims, characterized in that the one or more second regions (220) of the sheet steel component (200) in the thermal post-treatment station (150) by means of radiation and / or by means of heat conduction and / or convection and / or electrically be heated by induction and / or resistance.
    [4]
    A heat treatment apparatus (100) comprising a production furnace (110) for heating a sheet steel component (200) to a temperature above the AC3 temperature, and a thermal aftertreatment station (150) for imparting a temperature profile to the sheet steel component (200), the sheet steel component (200) in one or more first regions (210) a temperature below the AC3 temperature and in one or more second regions (220) a temperature above the AC3 temperature can be imprinted, characterized in that the profiling device (150) comprises a cooling device for cooling the one or more first regions (210) and a heating device for heating the one or more second regions (220) of the sheet steel component.
    [5]
    5. A heat treatment device (100) according to claim 4, characterized in that the cooling device is a blower for a gas flow and / or a heat radiation absorbing surface and / or a surface which at least a part of the one or more first regions (210) of the sheet steel component (220 ) is in contact, has.
    [6]
    6. A heat treatment device (100) according to claim 4 or 5, characterized in that the heating device comprises a heat radiation device and / or at least a part of the one or more second regions (220) in contact surface and / or a blower device for generating a gas stream and / or has an induction coil.
    [7]
    7. A heat treatment apparatus (100) according to any one of claims 4 to 6, characterized in that the heat treatment apparatus (100) comprises a separation device for thermal separation of the first region (210) from the second region (220) of the sheet steel component.
    [8]
    A heat treatment apparatus (100) according to any one of claims 4 to 7, characterized in that the heat treatment apparatus (100) comprises a second handling device (131) disposed between the production furnace (110) and the thermal aftertreatment station (150) is designed to spend the sheet steel component (200) of the production furnace (110) in the thermal post-treatment station (150).
    [9]
    A heat treatment apparatus (100) according to any one of claims 4 to 8, characterized in that the heat treatment apparatus (100) comprises a plurality of thermal aftertreatment stations (150).
    [10]
    A heat treatment apparatus (100) according to any one of claims 4 to 9, characterized in that the production furnace (110) is a continuous furnace or a batch furnace.
    [11]
    11. Heat treatment device (100) according to one of claims 4 to 10, characterized in that the production furnace (110) is gas-fired or electrically heated. 4 sheets of drawings
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    同族专利:
    公开号 | 公开日
    DE102014201259A1|2015-07-23|
    PT2905346T|2020-11-03|
    引用文献:
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    DE102007057855B3|2007-11-29|2008-10-30|Benteler Automobiltechnik Gmbh|Production of moldings with structure zones of different ductility comprises heat treatment of aluminum-silicon coated high-tensile steel blank, followed by treating zones at different temperature|
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    DE102016202766A1|2016-02-23|2017-08-24|Schwartz Gmbh|Heat treatment process and heat treatment device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102014201259.7A|DE102014201259A1|2014-01-23|2014-01-23|Heat treatment device|
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