EP3607098B1 - Temperature control station for partially thermally treating a metal component - Google Patents

Description

The invention relates to a temperature control station for the partial heat treatment of a metallic component, a device for the heat treatment of a metallic component and the use of at least one tangential nozzle in a temperature control station for the partial heat treatment of a metallic component. The invention can be used in particular in connection with a press hardening line in which a press hardening tool is arranged downstream of a continuous furnace, in particular a roller hearth furnace.

To manufacture safety-relevant vehicle body components from sheet steel, it is regularly necessary to harden the sheet steel during or after the deformation to form the body component. For this purpose, a heat treatment process called "press hardening" has been established. The steel sheet, which is regularly provided in the form of a blank, is first heated in an oven and then cooled in a press during the forming process and thereby hardened.

For some years now there has been an effort by means of press hardening body components of motor vehicles, such as. B. A- and B-pillars, side impact protection beams in doors, sills, frame parts, bumper guards, cross members for the floor and roof, front and rear side members, which have different strengths in some areas, so that the body component can partially fulfill different functions. For example, the central area of a B-pillar of a vehicle should have a high degree of strength in order to protect the occupants in the event of a side impact. At the same time, the upper and lower end areas of the B-pillar should have a comparatively low strength in order to be able to absorb deformation energy during a side impact on the one hand and during a side impact on the other the assembly of the B-pillar to enable simple connectivity with other body components.

In order to form such a partially hardened body component, it is necessary for the hardened component to have different strength properties in the subregions. For this purpose it is possible, for example, to arrange one or more temperature control station (s) between the furnace and the press hardening tool. The tempering station is provided and set up to set different temperatures in the subareas of the component, which is initially uniformly heated, so that different strength properties are set in the subareas during the subsequent press hardening. Optimal cycle times, which play an important role in the vehicle industry in particular, can be achieved here in particular if the components oven, temperature control station and press hardening tool are arranged one behind the other.

It has been found to be advantageous if one or more specific sub-areas of the component, which should have a higher ductility or lower strength in the hardened component than other, hardened sub-areas of the component, are specifically cooled in the temperature control station, in particular while the others, parts of the component to be hardened are kept at a high temperature. In this context, it has been found to be particularly advantageous if air is blown at high speed through nozzles onto the corresponding sub-area or areas of the component in order to cool the specific sub-area or areas with lower strength.

With such air cooling, however, the problem regularly arises that the boundary between the sub-areas of different strength, which is also referred to as the transition area, does not arise in the component clearly enough definable and / or precisely enough adjustable. In order to achieve the most exact adjustability of the transition area possible, partitions, which are also referred to as bulkheads, are regularly used, which are arranged next to the nozzles in the temperature control station and which are provided and set up for the (thermal) delimitation of the respective sub-areas of different strength. For this purpose, the partition walls can even touch the component, if necessary, but a gap, which is to be kept as small as possible, must regularly be provided between the lower end of the respective partition and the component.

It may happen that the gap between the partition and the component is not small enough to reliably prevent a possible leakage of cold air to the hotter and hot part of the component. This leads to an unwanted blurring in the transition area, as a result of which the transition area is usually larger than necessary or desired. In addition, warping of the hot component or insufficiently precise positioning of the component can lead to undesired enlargements of the gap. However, the automotive industry is increasingly placing great importance on the smallest possible transition areas so that the subsequent crash behavior can be better mapped in the previous design, in particular in the previous simulation of the crash behavior. Therefore, there is an increasing effort to be able to set the transition areas as precisely and as small as possible, which is made more difficult in particular by the leakage flows between the partition and the component that have occurred in previous temperature control stations.

Thermal treatment methods are from the DE 10 2015 112 293 A1 and DE 10 2012 021 576 A1 known.

Proceeding from this, it is the object of the present invention to at least partially solve the problems described with reference to the prior art. In particular, a temperature control station and a device for heat treatment of a metallic component are to be specified, which it allow a transition area between differently heat-treated sub-areas of the component to be set as reliably and / or exactly as possible, in particular as small as possible. In addition, the temperature control station and the device should in particular allow contact of the component with a partition wall for (thermal) delimitation of the differently temperature-controlled subregions of the component is no longer necessary.

These objects are achieved by the features of the independent patent claims. Further advantageous configurations of the solution proposed here are specified in the dependent claims. It should be pointed out that the features listed individually in the dependent claims can be combined with one another in any desired, technologically sensible manner and define further embodiments of the invention. In addition, the features specified in the patent claims are specified and explained in more detail in the description, with further preferred embodiments of the invention being presented.

A temperature control station according to the invention for the partial heat treatment of a metallic component has at least one (horizontal) processing plane arranged in the temperature control station, in which the component can be arranged, and at least one nozzle, which is oriented towards the processing plane and for discharging a fluid flow for cooling at least a first sub-area of the component is provided and set up. The at least one nozzle is a tangential nozzle.

The tangential nozzle is characterized in particular by the fact that it generates and / or discharges a fluid flow at at least one nozzle outlet which has at least one directional component or a streamline that is essentially tangential and / or parallel to the processing plane and / or a surface of the component . The terms "essentially tangential" and "im "Essentially parallel" here includes in particular deviations from the ideal shape ("tangential" or "parallel") in the range from -10 ° to + 20 ° [degrees], preferably 0 ° to 20 °. The tangential nozzle preferably generates a horizontal flow downstream of its nozzle outlet.

For this purpose, a plane in which a nozzle outlet cross-section or an opening of a nozzle outlet of the tangential nozzle is located can enclose an angle of 0 ° to 135 ° [degrees], preferably 0 ° to 75 ° and in particular 20 ° to 75 ° with the (horizontal) processing plane . The tangential nozzle contributes in particular to directing the air flow in such a way that an air pulse in the direction of a second partial area of the component is suppressed at the nozzle outlet. It is particularly preferred if a nozzle outlet or a nozzle outlet opening of the tangential nozzle points or is directed towards the first partial area of the component and / or away from a second partial area of the component.

The solution presented here advantageously allows a type of “aerodynamic seal” to be provided in the direction of the second partial area of the component. This helps to ensure that essentially no leakage of the fluid flow reaches the second sub-area of the component, which should change its high component temperature as little or as little as possible during the cooling of the first sub-area in the temperature control station for the purpose of hardening the second sub-area. In this way, very sharply delimited transition areas can be represented in an advantageous manner. In particular, a transition area that can be achieved by means of the solution presented here lies approximately in the range from 1 mm to 60 mm [millimeters]. In an advantageous application of the solution presented here, the size, in particular the width of the transition area is mainly (only) determined by the physically unavoidable heat conduction in the component. With the solution presented here, for example, soft outer flanges can be easily produced on hard components.

The metallic component (to be treated by means of the temperature control station) is preferably a metallic blank, a sheet steel or an at least partially preformed semi-finished product. The metallic component is preferably made with or made of a (hardenable) steel, for example a boron (manganese) steel, e.g. B. with the designation 22MnB5 formed. The metallic component is further preferably provided or precoated at least to a large extent with a (metallic) coating. The metallic coating can be, for example, a (primarily) zinc-containing coating or a (primarily) aluminum and / or silicon-containing coating, in particular a so-called aluminum / silicon (Al / Si) coating. However, the metallic component can (alternatively) also be formed with or from aluminum or with or from an aluminum alloy.

The temperature control station is preferably arranged downstream of a first furnace and / or upstream of a second furnace. A processing plane in which the component can be or is arranged is arranged in the temperature control station. The processing level here refers in particular to the level into which the component can be brought for treatment in the temperature control station and / or in which the component is arranged and / or fixable during the treatment in the temperature control station. The working plane is preferably aligned essentially horizontally.

The temperature control station has at least one nozzle. The nozzle is oriented towards the working plane. In addition, the nozzle for discharging a fluid stream for cooling at least a first sub-area of the component is provided and set up, in particular so that a temperature difference between the at least one first (more ductile in the finished component) sub-area and at least one second (in the finished component in Compared to this, the harder) partial area of the component is adjustable. A plurality of nozzles is preferably provided, the nozzles particularly preferably being arranged in a nozzle field. When a plurality of nozzles are provided, at least one of the nozzles is a tangential nozzle.

The fluid flow is preferably formed with a cooling fluid. The cooling fluid can be formed with a gas, for example nitrogen, or with a gas mixture, in particular air. In addition, the cooling fluid can be formed with a gas-liquid mixture, for example an air-water mixture.

In addition to the at least one nozzle, which is designed as a tangential nozzle, the temperature control station can have one or more further nozzles which have a different, in particular structurally simpler, nozzle geometry. Thus, in addition to the at least one (tangential) nozzle, at least one further nozzle can be provided which has or forms, in particular surrounds, at least one nozzle channel running essentially perpendicular to the processing plane. The further nozzle is preferably arranged next to the (tangential) nozzle in the temperature control station, but in particular not between the (tangential) nozzle and a partition. The further nozzle and the (tangential) nozzle can be held at the same height within the temperature control station and / or above the processing plane. The at least one further nozzle is preferably designed in the manner of a shower head. In other words, this means in particular that the at least one further nozzle has a multiplicity of outlet openings on an underside pointing towards the processing plane.

A combination of (tangential) nozzles and further nozzles, each designed in the manner of a shower (also referred to as "shower heads"), is particularly advantageous in the event that large-area first partial areas of the component are to be cooled. It is particularly advantageous if the (tangential) nozzles are arranged in the area of a partition and the further nozzles (in comparison to this) are arranged more towards the center of the first partial area of the component to be cooled. If the deformation of the component due to residual stress increases over large areas so that with pure horizontal flow (from the tangential nozzles) behind the elevations, dead areas with a lower flow velocity can arise, this leads to slower cooling in places. Therefore, large areas should (also) be flown vertically. The vertical flow can be provided in a particularly advantageous manner in that, in addition to the at least one (tangential) nozzle, one or more further nozzles are provided, each of which is formed in the manner of a shower.

According to an advantageous embodiment, it is proposed that a nozzle geometry of the at least one nozzle is designed such that at least one component of the fluid flow flowing (within the nozzle) in the direction of a second sub-area of the component is deflected towards the first sub-area of the component. The component of the fluid flow is preferably deflected within the nozzle and / or directly upstream of a nozzle outlet opening towards the first partial area.

According to a further advantageous embodiment, it is proposed that the nozzle geometry of the at least one nozzle is designed such that at least one component of the fluid flow initially flows through the nozzle in a direction towards a second sub-area of the component and is then deflected towards the first sub-area. The fluid flow is preferably deflected from a deflection area of the nozzle to the first partial area, the deflection area regularly being arranged (directly) upstream of a nozzle outlet and / or a nozzle outlet opening.

According to an advantageous embodiment, it is proposed that the nozzle geometry of the at least one nozzle is designed in such a way that the (entire flowing through the respective nozzle) fluid flow initially flows through the nozzle in a direction towards a second sub-area of the component and then towards the first sub-area is diverted. (Immediately) after the fluid flow has been deflected towards the first sub-area, the fluid flow can leave the at least one nozzle essentially tangentially and / or parallel to the processing plane and / or a surface of the first sub-area of the component.

The nozzle geometry of the at least one nozzle is preferably designed in such a way that at least one component of the fluid flow, at least one (central) streamline of the fluid flow or even the entire fluid flow flowing through the respective nozzle flows through the nozzle (initially) in a first direction, then is deflected and then flows through the nozzle in a second direction. Here, the first direction (predominantly) has a directional component directed radially outward and the second direction (predominantly) has a directional component directed radially inward. The information "radially outwards" and "radially inwards" are defined in relation to a nozzle inlet section or nozzle inlet channel running essentially perpendicular to the processing plane. On its way through the nozzle, the fluid flow thus regularly or firstly flows through a nozzle inlet section or nozzle inlet channel running essentially perpendicular to the processing plane, is then deflected radially outward, then deflected so that it is radially inward in the area of a nozzle outlet or towards the nozzle outlet is directed.

The at least one nozzle preferably has a deflection area. The deflection area is particularly preferably at least partially curved or executed curved. The deflection area can be arranged directly upstream of a nozzle outlet.

According to the invention, a nozzle outlet of the at least one nozzle is designed, roughly aligned and / or arranged relative to a deflection area of the nozzle that one (each) flow pulse in the direction of a second sub-area (7) of the component (2) is suppressed at the nozzle outlet. The nozzle outlet is preferably arranged downstream and / or after a curvature of the nozzle geometry, a curved section of the nozzle and / or a deflection area of the nozzle. A concave inside of the curvature, the curvature section or the deflection region preferably points towards the first partial region of the component. Furthermore, a convex outside of the curvature, the curvature section or the deflection region preferably points towards a second partial region of the component. The nozzle outlet is particularly preferably oriented (directly) towards the first sub-area and / or in the direction of the first sub-area.

Furthermore, the at least one nozzle is preferably arranged adjacent to and / or (directly) in the area of a partition which (thermally) delimits the first sub-area from a second sub-area of the component. Here, the partition wall can be a part of the temperature control station and / or (in any case also) be arranged above the component. In addition, it is preferred if the at least one nozzle has a cranked design. The at least one nozzle is particularly preferably cranked in such a way that a nozzle outlet of the at least one nozzle has a smaller (horizontal) distance from the partition than a nozzle inlet of the at least one nozzle. As a result of the cranked design, it can be achieved in particular that the nozzle outlet can be arranged very close to or even at least partially below the partition and thus very close to the transition area to be generated, while still being sufficient remaining space between the nozzle inlet and the partition wall for thermal insulation attached to the partition wall.

According to an advantageous embodiment, it is proposed that the at least one nozzle has a deflection area which extends towards and / or at least partially below a partition wall which delimits the first partial area from a second partial area of the component. The partition is preferably a part of the temperature control station and is regularly (at least also) arranged above the component. A convex outside of the deflection area is preferably directed towards the partition and / or towards a second partial area of the component.

According to an advantageous embodiment, it is proposed that the at least one nozzle, in particular a deflection area of the at least one nozzle, is designed so that the fluid flow is directed on a side facing the processing plane and / or on an area facing a second sub-area of the component creates a negative pressure area around the nozzle. In this case, the negative pressure area is an area with a pressure that is lower than the ambient pressure. A flow pulse in the direction of the first partial area of the component is preferably to be set or adjusted by the geometry of the deflection area in such a way that a (slight) negative pressure is created on the underside of the nozzle. The resulting ejector effect even allows some warm air from the hot area of the temperature control station, i.e. H. can be deducted from the area above or below a second sub-area of the component. Due to the low density of the hot air and the small amount, the effect is on the cold side, i.e. H. regularly negligible above or below the first partial area of the component. In this way, a very sharply delimited transition area can be represented in a particularly advantageous manner.

According to an advantageous embodiment, it is proposed that a distance between the processing plane and the at least one nozzle be adjustable in this way or it is set so that the at least one nozzle does not contact the component. The distance is preferably in the range from 0.01 mm to 6 mm [millimeters], particularly preferably in the range from 0.5 mm to 5 mm or even in the range from 1 mm to 3.5 mm.

The nozzle geometry and / or an outer contour of the nozzle is preferably designed in such a way that the negative pressure area described above arises itself or, in particular, when the nozzle does not contact the component. The solution presented here can thus be designed to be very fault-tolerant with regard to positioning errors and / or temperature-related or residual stress-related geometry errors of the component.

Furthermore, the at least one nozzle in the temperature control station is preferably movable, in particular held or supported in a displaceable manner. With a correspondingly variable fastening of the nozzle, the exact position of the transition area can advantageously be readjusted in a simple manner in the horizontal direction.

At least one heat source, which is (thermally) separated from the at least one nozzle in the temperature control station, is preferably arranged in the temperature control station. Here, the heat source and the nozzle can be (thermally) separated from one another and / or shielded by means of a partition. The at least one heat source is preferably at least one radiant heat source. The heat source is preferably an actively operable, in particular electrically operable or energizable heat source. The heat source is particularly preferably formed with an electrically operated heating element (which does not physically or electrically contact the component). The heating element can be a heating loop, an all-ceramic heating element and / or a heating wire. Alternatively or in addition, the heat source with a (gas-heated) radiant tube be formed. The heat source and the nozzle are advantageously held in a nozzle box arranged in the temperature control station, the nozzle box having at least one partition between the heat source and the nozzle. It is particularly preferred if a nozzle outlet or a nozzle outlet opening of the tangential nozzle points or is directed away from the heat source.

• einen, insbesondere mittels Strahlungswärme und/oder Konvektion beheizbaren ersten Ofen,
• eine dem ersten Ofen nachgeordnete, hier vorgestellte Temperierstation.

According to a further aspect, a device for the (partial) heat treatment of a metallic component is proposed which comprises at least:

• a first furnace that can be heated in particular by means of radiant heat and / or convection,
• a temperature control station presented here, downstream of the first furnace.

• einen der Temperierstation nachgeordneten, insbesondere mittels Strahlungswärme und/oder Konvektion beheizbaren zweiten Ofen, und/oder
• ein der Temperierstation und/oder dem zweiten Ofen nachgeordnetes Presshärtewerkzeug.

According to an advantageous embodiment, it is proposed that the device further comprises at least:

• a second furnace which is arranged downstream of the temperature control station, in particular can be heated by means of radiant heat and / or convection, and / or
• a press hardening tool downstream of the temperature control station and / or the second furnace.

The press hardening tool is provided and set up in particular to reshape the component at the same time or at least partially in parallel and (at least partially) to quench it. The press hardening tool can be part of a press or be formed by a press. The first furnace, the temperature control station, the second furnace and the press hardening tool (in the order mentioned) are preferably arranged in particular directly one behind the other. However, between the first furnace and the temperature control station, between the temperature control station and the second furnace and / or between the second furnace and the press hardening tool, an optionally by means of at least one Handling device to be bridged distance be provided, which is preferably at least 0.5 m [meters].

It is particularly advantageous if at least the first furnace or the second furnace is a continuous furnace or a chamber furnace. The first furnace is preferably a continuous furnace, in particular a roller hearth furnace. The second furnace is particularly preferably a continuous furnace, in particular a roller hearth furnace, or a chamber furnace, in particular a multi-layer chamber furnace with at least two chambers arranged one above the other. The second furnace preferably has a furnace interior which can in particular (exclusively) be heated by means of radiant heat, in which an (almost) uniform internal temperature can preferably be set or set. In particular if the second furnace is designed as a multi-layer chamber furnace, several such furnace interiors can be present, depending on the number of chambers.

Radiant heat sources (exclusively) are preferably arranged in the first oven and / or in the second oven. Particularly preferably, at least one electrically operated heating element (which does not contact the component), such as at least one electrically operated heating loop, an all-ceramic heating element and / or at least one electrically operated heating wire, is arranged in an oven interior of the first oven and / or in an oven interior of the second oven . Alternatively or additionally, at least one, in particular gas-heated, radiant tube can be arranged in the oven interior of the first oven and / or the oven interior of the second oven. Preferably, a plurality of radiant tube gas burners or radiant tubes, into each of which at least one gas burner burns, are arranged in the furnace interior of the first furnace and / or the furnace interior of the second furnace. It is particularly advantageous here if the inner area of the steel pipes into which the gas burners burn is atmospherically separated from the furnace interior so that no combustion gases or exhaust gases enter enter the furnace interior and thus influence the furnace atmosphere. Such an arrangement is also referred to as "indirect gas heating".

The details, features and advantageous configurations discussed in connection with the temperature control stations can correspondingly also occur in the device presented here and vice versa. In this respect, reference is made in full to the statements made there for a more detailed characterization of the features.

According to a further aspect, the use of at least one tangential nozzle in a temperature control station is proposed for the partial heat treatment of a metallic component, in particular for the partial cooling of a first partial area of the component. The tangential nozzle is preferably used to discharge an essentially horizontally oriented air stream that flows along a surface of a first sub-area of the component in order to reduce the strength of the first sub-area (compared to a second sub-area) in the finished heat-treated (i.e. press-hardened) component cool. Here, the tangential nozzle can be aligned in such a way that the air stream flows from an edge (to be set) or a contour of the first sub-area and / or from a partition wall towards a center of the first sub-area.

The details, features and advantageous configurations discussed in connection with the temperature control station and / or the device can correspondingly also occur in the use presented here and vice versa. In this respect, reference is made in full to the statements made there for a more detailed characterization of the features.

Fig. 1:

eine schematische Darstellung einer erfindungsgemäßen Temperierstation, und

Fig. 2:

eine schematische Darstellung einer erfindungsgemäßen Vorrichtung.

The invention and the technical environment are explained in more detail below with reference to the figures. It should be pointed out that the invention is not intended to be restricted by the exemplary embodiments shown. In particular, unless explicitly stated otherwise, it is also possible to extract partial aspects of the facts explained in the figures and to combine them with other components and / or findings from other figures and / or the present description. Show it:

Fig. 1:

a schematic representation of a temperature control station according to the invention, and

Fig. 2:

a schematic representation of a device according to the invention.

Fig. 1 shows a schematic representation of a temperature control station 1 for the partial heat treatment of a metallic component 2. In the temperature control station 1, a processing plane 3 is arranged, in which the component 2 lies. In addition, a nozzle 4 is arranged in the temperature control station 1 here, by way of example, which is oriented towards the processing plane 3 and for discharging a fluid stream 5 (in Fig. 1 shown in dashed lines) is provided and set up for cooling a first partial area 6 of the component 2.

Also illustrated Fig. 1 that the nozzle 4 is a tangential nozzle 13. This is characterized in that it generates a fluid flow 5 at a nozzle outlet 9 of the nozzle 4, which is essentially tangential or parallel to a surface of the component 2, here to a surface of the first partial area 6 of the component 2. This alignment is illustrated by the arrow at the end of the fluid flow 5 shown in dashed lines. Furthermore, a (in Fig. 1 cut) nozzle geometry 8 of the nozzle 4 is designed such that at least one component of the fluid flow 5 flowing in the direction of a second sub-area 7 of the component 2 is deflected towards the first sub-area 6. According to the illustration after Fig. 1 the nozzle geometry is even designed in such a way that the entire fluid flow 5 flowing through the nozzle 4 initially flows through the nozzle 4 in one direction towards a second sub-area 7 of the component 2 and is then deflected towards the first sub-area 6 of the component 2. In order to deflect the fluid flow 5 towards the first partial area 6, the nozzle 4 has in FIG Fig. 1 a deflection area 10. A nozzle outlet 9 of the nozzle 4 follows downstream of the deflection area 10. The nozzle outlet 9 is designed, roughly aligned and arranged relative to the deflection area 10 that a flow impulse in the direction of the second sub-area 7 of the component 2 is suppressed at the nozzle outlet 9.

In Fig. 1 it is also shown that the deflection area 10 of the nozzle 4 extends towards and at least partially below a partition 11 which (thermally) delimits the first sub-area 6 of the component 2 from the second sub-area 7 of the component 2. The partition wall 11 is formed here, for example, as part of a nozzle box 19, in which a heat source 20 is kept (thermally) separated or isolated from the nozzle 4. The partition wall 11 helps to (thermally) seal off the nozzle 4 and the first sub-area 6 of the component 2 from the heat source 20 and thus the first sub-area 6 of the component 2, which is cooled by the nozzle 4, from the second sub-area 7 of the component 2, which is heated (thermally) by means of the heat source 20, so that different component temperatures can be set in the subregions 6, 7, which lead to different structures and / or strength properties in the subregions 6, 7 of the component.

In addition, in Fig. 1 shown that the nozzle 4 in Fig. 1 is designed in such a way that the fluid flow 5 is on a side of the Nozzle 4 and a negative pressure area 12 is generated at an area of the nozzle 4 pointing towards a second partial area 7 of the component 2. In addition, in Fig. 1 it can be seen that a distance between the processing plane 3 and the nozzle 4 is set in such a way that the nozzle 4 does not contact the component 2.

In addition to the nozzle 4, which is designed as a tangential nozzle 13, the temperature control station 1 has a further nozzle 18 here. The further nozzle 18 is formed, for example, in the manner of a shower and is held next to the tangential nozzle 13 in the temperature control station 1.

Fig. 2 shows a schematic representation of a device 14 according to the invention for heat treatment of a metallic component 2. The device 14 has a heatable first furnace 15, a temperature control station 1 (directly) downstream of the first furnace 15, and a heatable second furnace 16 (directly) downstream of the temperature control station 1 and a press hardening tool 17 arranged (directly) downstream of the second furnace 16. The device 14 here represents a hot forming line for (partial) press hardening. The press hardening tool 17 is part of a press or is formed by a press.

A temperature control station and a device for heat treatment of a metallic component are specified here, which at least partially solve the problems described with reference to the prior art. In particular, the temperature control station and the device allow a transition area between differently heat-treated sub-areas of the component to be set as reliably and / or exactly as possible, in particular as small as possible. In addition, the temperature control station and the device allow, in particular, that contact of the component with a partition wall for (thermal) delimitation of the differently temperature-controlled subregions of the component is no longer necessary.

List of reference symbols

1

Temperature control station

2

Component

3

Machining plane

4th

jet

5

Fluid flow

6th

first part

7th

second sub-area

8th

Nozzle geometry

9

Nozzle outlet

10

Deflection area

11

partition wall

12th

Low pressure area

13th

Tangential nozzle

14th

contraption

15th

first oven

16

second oven

17th

Press hardening tool

18th

another nozzle

19th

Nozzle box

20th

Heat source

Claims (10)

1. Temperature control station (1) for the partial heat treatment of a metal component (2), comprising a processing plane (3), which is arranged in the temperature control station (1) and in which the component (2) can be arranged, at least one nozzle (4), which is directed toward the processing plane (3) and is provided and designed for discharging a fluid stream (5) for cooling at least a first portion (6) of the component (2), wherein the at least one nozzle (4) is a tangential nozzle (13), wherein a nozzle outlet (9) of the at least one nozzle (4) is designed such that a flow pulse in the direction of a second portion (7) of the component (2) is prevented at the nozzle outlet (9).
2. Temperature control station according to claim 1, wherein a nozzle geometry (8) of the at least one nozzle (4) is designed such that at least one element of the fluid stream (5) flowing in the direction of a second portion (7) of the component (2) is deflected toward the first portion (6).
3. Temperature control station according to either claim 1 or claim 2, wherein the nozzle geometry (8) of the at least one nozzle (4) is designed such that at least one element of the fluid stream (5) flows through the nozzle (4) initially in a direction toward a second portion (7) of the component (2) and then is deflected toward the first portion (6).
4. Temperature control station according to any of the preceding claims, wherein the nozzle geometry (8) of the at least one nozzle (4) is designed such that the fluid stream (5) first flows through the nozzle (4) in a direction toward a second portion (7) of the component (2) and is then deflected toward the first portion (6).
5. Temperature control station according to any of the preceding claims, wherein the at least one nozzle (4) has a deflection region (10) which extends toward and/or at least partially below a partition (11) which separates the first portion (6) from a second portion (7) of the component (2).
6. Temperature control station according to any of the preceding claims, wherein the at least one nozzle (4) is designed such that the fluid stream (5) generates a negative pressure region (12) at a side pointing toward the processing plane (3) and/or at a region of the nozzle (4) pointing toward a second portion (7) of the component (2).
7. Temperature control station according to any of the preceding claims, wherein a distance between the processing plane (3) and the at least one nozzle (4) is adjustable such that the at least one nozzle (4) does not contact the component (2).
8. Apparatus (14) for the heat treatment of a metal component (2), comprising at least:

   - a heatable first furnace (15),

   - a temperature control station (1) downstream of the first furnace (15), which station is designed according to any of the preceding claims.
9. Apparatus according to claim 8, further comprising at least:

   - a heatable second furnace (16) downstream of the temperature control station (1), and/or

   - a press-hardening tool (17) downstream of the temperature control station (1) and/or the second furnace (16).
10. Use of at least one tangential nozzle (13) in a temperature control station (1) according to any of claims 1 to 7 for the partial heat treatment of a metal component (2).

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