DE102015122410A1 - Process for the production of components with finished areas mainly of metal as well as a component with finished areas - Google Patents

Abstract

The invention relates to a method for the production of components with Doppler / Doppeldopplern / amplifiers, etc., and metal components with Doppler preferably metal - wherein at least one partner / body is preferably made of metal as a base partner and at least a "Doppler" preferably is positioned on the partner completely or partially overlapping and fixed, so that the partner in its thickness by the "Doppler" reinforced / refined, - wherein the component or at least one base partner at least one connection point for Doppler with a or, conversely, the Doppler is provided with a V-structure or both partners with a complementary V-structure / form-locking V-structure, at least one "Doppler" at the connection point to the V-structure provided area of the base partner page is launched / merged, or u reversed - blanks which are processed for forming a composite partner to the component connected in particular cold or hot formed, thereby at least an at least partial positive connection between the partner in the V-structured region and the Doppler is generated or vice versa and in the Case of the "Doppeldopplers" advantageous all partners with each other in all forms at least partially positively and advantageously also at least partially cohesively connected to each other.

Description

• – das Aufbringen eines „Dopplers“/Verstärkers vorteilhaft aus einem Leichtmaterial (L-Material) und /oder hochfesten, Material (H-Material) auf ein Produkt auch sich bereits zumindest wesentlich in Endform befindliches Produkt oder Rohling/Rohlingverbund usw. der vorzugsweise für hohe Festigkeit aus höherfesterem Material (H-Material)gewählt sein sollte wie beispielsweise für den Automobilbau härtbaren Stahl wie den 22MnB5, mit der Zielsetzung beispielsweise mit einem L-Material die Torsionssteifigkeit und/oder Biegesteifigkeit und/oder Festigkeit und/oder andere Fähigkeiten wie beispielsweise Anbindungsmöglichkeiten des Bauteils/Rohteils/Rohteilverbundes deutlich und gezielt zu erhöhen, ohne das Gesamtgewicht des fertigen Bauteils wesentlich zu erhöhen. In der umgekehrten Anordnung, also beispielsweise Aufbringen eines Dopplers/Verstärkers aus hochfestem Material (H-Material)und/oder aus Leichtmaterial (L-Material) auf ein Leichtbauprodukt/-rohling/-rohlingverbund (L-Material) und/oder ein kaltumformbares Material (K-Material) usw. kann beispielsweise die Festigkeit/Steifigkeit/Anbindungsmöglichkeit usw. örtlich deutlich erhöht werden, ohne das Gesamtgewicht des Bauteils wesentlich zu erhöhen, wie beispielsweise im Automobilbau die Bereiche einer A- oder B-Säule die beispielsweise aus einer Platine oder auch mehreren Platinen hergestellt sein können im Bereich der Türscharnieranbringung usw. oder zusätzliche Funktionsbereiche wie beispielsweise Befestigungsmöglichkeiten bereitstellen. Selbstverständlich können auch beispielsweise Produkte aus H-Material mit dünner Wandung wie beispielsweise aus 22MnB5 mit einem Doppler aus gleichem oder ähnlichem Material in allen denkbaren Wanddickenstärkenkombinationen örtlich verstärkt werden. Dementsprechend sind alle möglichen und sinnvollen Materialkombinationen angedacht.
• – z.B. im Falle gleicher Art des Basismaterials für den Doppler und zu verstärkendes Material beispielsweise St-Legierung / St-Legierung oder Al-Legierung / Mg-Legierung die miteinander verbunden werden sollen, werden die Partner positionsgerecht geheftet/fixiert/gelötet usw.

The invention relates to a method for the production of components with at least one finished area such as, for example, a Doppler consisting advantageously of metal and / or sheet metal, wherein

• - The application of a "Doppler" / amplifier advantageous from a light material (L-material) and / or high-strength, material (H-material) on a product already at least substantially in final form product or blank / blank assembly, etc. preferably for high strength of higher strength material (H-material) should be selected such as for automotive hardenable steel such as the 22MnB5, with the objective for example, with an L-material, the torsional stiffness and / or bending stiffness and / or strength and / or other capabilities such as To increase connection possibilities of the component / raw part / raw material composite clearly and purposefully, without substantially increasing the total weight of the finished component. In the reverse arrangement, for example, applying a Doppler / amplifier of high-strength material (H-material) and / or light material (L-material) on a lightweight product / blank / blank compound (L-material) and / or a kaltumformbares material (K-material), etc., for example, the strength / rigidity / connection possibility etc. can be significantly increased locally, without significantly increasing the total weight of the component, such as in automotive the areas of an A or B pillar, for example, from a board or can also be made of multiple boards in the field of door hinge attachment, etc., or provide additional functional areas such as mounting options. Of course, for example, products made of H-material with a thin wall such as 22MnB5 with a Doppler of the same or similar material in all conceivable Wanddickenstärkenkombinationen be strengthened locally. Accordingly, all possible and useful material combinations are being considered.
• - For example, in the case of the same type of base material for the Doppler and reinforcing material, for example, St alloy / St alloy or Al alloy / Mg alloy to be joined together, the partners are stapled / fixed / soldered position correct ..

Case 1:

• For example, the partner / base body equipped with a Doppler / amplifier or partner subgroups, equipped with at least one Doppler / amplifier, and thus possibly formed shell sub-groups may be trimmed shaping, perforated, etc. and then the overall connection with partners or partner subgroups of strange materials / Alloys such as aluminum and / or Al alloy / Al alloy supplied with subsequent or simultaneous shaping.

Case 2:

• For example, a B-post made entirely from an Al-board (exemplified by a natural-hardening alloy) is supplied in cold or advantageous at the junction with elevated temperature advantageously already finished shaped Doppler 22MnB5 provided with its Austinitisierungstemperatur and with its V-structure connected while the Doppler is cured, etc.

State of the art, for example, in the production of crash-relevant body components methods in which materials are used, which are tailored to the component requirements. For example, forming plates are used which have different material thicknesses and / or qualities. So-called flexible rolled sheets (TRB = Tailored Rolled Blanks), for example, described in the DE102011001320A1 ; DE102010026253A1 ; DE102011005977A1 ; DE202009009143U1 ; DE 102004037206A1 have matched to the requirement different material thicknesses with the same material quality. For example, in welded blanks (TWB = Tailored Welded Blanks) DE102012001117A1 In addition to the material thickness, the material quality can also be changed. The TRB process requires expensive cold rolling of the blanks. In the TWB method, it is necessary to connect the individual boards, for example by means of laser welding.

Components for which such methods are contemplated can be found, for example, for the automotive industry throughout the bodyshell of vehicles, such as A-pillars, B-pillars, side rails, cross members, bumpers, side impact beams, wheel arches, and the like.

Based on this prior art, the invention has for its object to provide a method and a component, or its production allows a significant torsional and / or bending stiffness as well as partial increase in strength and / or additional integration of functional possibilities of the final product, without the weight to increase the finished product significantly, or a locally partial increase in strength of the finished product offers little effort and cost-effective process steps, as well as new material combinations allowed.

The solution to this problem is specified in the claims.

• I. Die Verbindung/Umformung der Partner in allen Kombinationen kann in allen Temperaturbereichen und Temperaturkombinationen durchgeführt werden.
• II. Die Verbindung/Umformung kann sowohl in Teiloperationen oder insgesamt unter Schutzgas vorgenommen werden bzw. mit entsprechenden oxidhemmenden und/oder diffusionfördernden Maßnahmen vorgenommen werden. Die nachfolgenden Beispiele beziehen sich weitgehend auf die Vorgänge/Operationen an Luft also in oxidbildender Atmosphäre/Umgebung.
• III. Alle Verbindungen versehen mit einer V-Struktur bzw. komplementärer V-Struktur können entweder von der dem Partner abgewandten Seite offen gelassen bleiben oder zusätzlich mit einem „Abdeckpartner“ (A-Partner) bzw. Doppeldoppler versehen werden, wobei die Eigenschaften der Verbindung zusätzlich verbessert werden. In den Fällen der komplementären Verbindung können beide Seiten oder nur eine Seite mit einem A-Partner versehen werden. Der „Abdeckpartner“ (A-Partner)vorteilhafterweise als Platine/Blech/Folie/Lotfolie usw. kann zumindest teilweise formschlüssig und/oder Stoffflüssig mit der V-Struktur und deren Umgebung verbunden werden. In den nachfolgenden Beispielen wird im Wesentlichen nur die einfache Verbindung (ohne A-Partner/Doppeldoppler) abgehandelt.
• IV. Die Position und/oder Art der Verbindung (V-Struktur) bezogen auf das Gesamtprodukt so gewählt wird, dass das Gesamtprodukt durch die Verbindung möglichst nicht beeinträchtigt wird beziehungsweise durch die Ausgestaltung der Verbindung zusätzliche positive Eigenschaften des Gesamtproduktes erzeugt werden.
• V. Generell ist auch die Option angedacht auch bei den Partnern aus deutlich weicherem Material (L-Partner) zumindest für die Verbindung vorgesehene Fläche zu dem Verbindungspartner (H-Partner) insgesamt oder zumindest teilweise komplementär anzuformen. Beispielhaft vorteilhaft für nicht flache Produkte, da eine zwischenzuschaltende Operation der Verbindung vor der Umformung wegfallen kann.
• VI. Vorteilhaft kann mit Hilfe eines vor der Erwärmung aufgetragenen Zusatzlots (vorteilhaft aufgetragen auf der nicht V-strukturierten Verbindungsfläche) auch noch zusätzlich der anschließende Formschluss verbessert werden in dem die „Leerstellen“ auch in der V-Verbindung mit Lot gefüllt werden, wie auch der Korrosionsschutz (Spaltkorrosion) verbessert werden kann.
• VII. Alle Kombinationen insbesondere mit Partnern bestehend aus wärmevergütbaren Al-Legierungen können aus der Umformwärme direkt einer Wärmevergütung zugeführt werden.
• VIII. Zum Verbund als fertiges Bauteil gehören alle möglichen Kombinationen von Bauteilen und Rohlingen wie beispielsweise zwei bereits zumindest weitgehend in der Endform befindliche Bauteile/Partner die „nur“ miteinander verbunden werden usw.
• IX. Die V-Struktur/komplementäre V-Struktur kann sowohl separat, das heißt Partnerbezogen einzeln hergestellt werden, wie eben auch erst nach dem Zusammenführen der Partner, eventuellem Fixieren usw., eventuellem Beschneiden usw. in einem Vorgang V-Strukturiert/V-Komplementär strukturiert/Formschlüssig strukturiert = Formschluss-V-Struktur auch vor der eventuellen Erwärmung oder direkt in dem eventuell angeordnetem Verbindungsprozessschritt bzw. während des Umformschritts in zusammengeführten Lage hergestellt werden, wie beispielsweise „viele Miniverclinchungen“ usw.

According to the invention, provision is made for components:
The following generally applies to all claims / procedural steps / operations / configurations:

• I. The connection / transformation of the partners in all combinations can be carried out in all temperature ranges and temperature combinations.
• II. The compound / transformation can be carried out either in partial operations or in total under protective gas or be carried out with appropriate oxide-inhibiting and / or diffusion-promoting measures. The following examples relate largely to the processes / operations in air, ie in an oxide-forming atmosphere / environment.
• III. All compounds provided with a V-structure or complementary V-structure can either be left open from the side facing away from the partner or additionally provided with a "cover partner" (A-partner) or double Doppler, the properties of the compound additionally being improved become. In the case of the complementary connection, both sides or only one side can be provided with an A-partner. The "cover partner" (A-partner) advantageously as a board / sheet / foil / solder foil, etc. can be at least partially positively and / or fluidly connected to the V-structure and its environment. In the following examples, essentially only the simple connection (without A-partner / double Doppler) is dealt with.
• IV. The position and / or type of compound (V-structure) based on the total product is chosen so that the total product is not affected by the compound as possible or generated by the design of the compound additional positive properties of the total product.
• V. In general, the option is also considered to form all or at least partially complementary surfaces of the partners made of much softer material (L-partner) at least for the connection intended area to the connection partner (H-partner). Exemplary advantageous for non-flat products, since a zwischenzuschaltende operation of the connection can be omitted before forming.
• VI. Advantageously, with the aid of an additional solder applied before heating (advantageously applied to the non-V-structured connection surface), the subsequent positive connection can also be improved in which the "voids" are also filled with solder in the V connection, as well as the corrosion protection (Crevice corrosion) can be improved.
• VII. All combinations, especially with partners consisting of heat-treatable Al alloys can be fed directly from the forming heat a heat compensation.
• VIII. The composite as a finished component includes all possible combinations of components and blanks such as two already at least largely in the final form located components / partners that are "only" connected to each other, etc.
• IX. The V-structure / complementary V-structure can be produced separately, that is to say partner-related, as well as after the merging of the partners, possible fixation, etc., possibly trimming etc. in a process V-structured / V-complementary structured / Form-fitting structured = form-fitting V-structure also be prepared before the eventual heating or directly in the possibly arranged connection process step or during the forming step in a merged position, such as "many Miniverclinchungen" etc.

 The other embodiments largely relate to the advantageous separate V-structuring, whereby a positive-locking V-structure can also be largely provided for these cases as well.

1) For example, consisting of only one base material group

• 1a), for example, with at least partially hardened region of the end product, for example, only steel blanks / steel parts advantageously provided in this case with an oxide protective layer for the base material such as an AlSi layer for steel alloys, wherein at least one area or a partner of the final product of high-strength hardened alloy For example, in one case of a 22MnB5 alloy, the end product or at least one of the partners that is to be partially doped locally with a Doppler to increase strength with H material, at this point with a targeted for a positive fit and at the same time the purpose of the Doppler ( eg stiffness and / or strength increase) according to selected and suitable connection geometry (further referred to as V-structure) such as perforations, perforations, extensions, Verclinchungen, wells, ribs with undercut is provided, etc., where the VS advantageous structure in the high-strength partner (H-partner) or complementary designed can be provided, wherein the H-material during the compound forming represents the higher-strength alloy and largely does not flow plastically in the material thickness during the joint forming and the V-structure, in particular the perforation is largely maintained. - The Doppler is prepared, which may consist of the same base material possibly also the same alloy (similar strength of the V-structure) dimensioned with the increase in strength of appropriate thickness and reasonable surface dimensions and a complementary perforation, positive deformations, etc. to the partner in the connection area and at the Junction is placed on the V-structured, in particular perforated region of the partner or placed under the perforated area or is supplied. In the case of a partner alloy of the same base material and other alloy with significantly lower strength at the connection temperature, the connection area of the much softer partner (L-partner) may optionally remain without complementary V-structure, during the compound the softer material into the V-structure the harder partner flows in and forms at least partially form-fitting. In addition, also in this case, a complementary V-structure can be provided in less solid material of the Doppler or generated in the collapsed state. Of course, in all cases of this invention, for reasons of fatigue strength / fatigue strength / crash behavior, the V-structure / complementary V-structure / form-fitting V-structure can be chosen and arranged so that the optimal solution / combination is used for the overall strength, for example. The partners prepared in this way, which may already have an oxide-inhibiting layer for the base material in an oxidizing environment, at least at an elevated temperature, such as, for example, an AlSi layer for steels, stapled / fixed / soldered in position-retaining fashion. Based on the desired material bond in the connection region, at least for procedure in an oxidizing environment between the surfaces to be joined, a solder or a metal / metal alloy with appropriate melting temperature, for example, an additional AlSi solder or Sn solder or brass, etc. and optionally, advantageously, a flux be positioned. It can also be provided to connect the partners with a cold / warm plating technology in an inert oxidizing inert environment. For example, the Doppler on a partner or on the overall blank formed from partners is optionally heated to a suitable temperature for forming, the heated largely flat overall blank including the Doppler / Doppler is hot-formed and for more curved / shaped components before the forming step, an intermediate connection step is carried out, wherein the forming at least one at least partial positive connection between the V-structure / form-fitting V-structure z. B. a circuit board and the area lying thereon or below of the / Doppler is generated, wherein an additional at least partially compound compound is advantageous.
• 1b) For example, products without required prior thermal anneal such as cure / austenitization for St base material. In this case, for example, products such as individual partners / single boards are used from the same base material that does not require special heat treatment, which are pretreated as described under point 1a), as well as also have the V-structure, of which in each case at least one of the superimposed partner has the V-structure at the later connection point. A Doppler partner with a corresponding region without V-structure or at least partially complementary V-structure can be applied to this V-structure. It can also be provided on a blank or blank composite several Doppler, which will eventually form the corresponding product. Of course, the V-structure arrangement is chosen so that the finished component reaches the best properties. To preliminarily position / fix the prepared partners, they are preferably stapled / glued / soldered, etc., so that the prepared position is maintained until the molding process is completed. The overall blank formed from the stapled / fixed / brazed partners is optionally heated to a temperature favorable for hot forming temperature and / or optionally a temperature profile, advantageously at least heated with respect to the target substance to appropriate soldering temperature, for example, for base material for St alloys with an example AlSi layer or solder base on at least their melting temperature. Also, the possibilities of plating should be considered. The at least partially heated blank assembly is then completely formed for largely flat components, wherein the forming at least an at least partial positive connection between the V-structured region of a partner and the subsequent or underlying area of another partner is generated. For more curved components, the connections are advantageously made before the cold / Made hot forming, where appropriate, the non-connectable areas are kept or brought to at least the advantageous hot forming temperature.

This ensures that the joining of the parts is integrated into the cold / hot forming process, so largely caused no further effort.

In contrast to the TRB process, this eliminates the need for expensive cold rolling of the blanks, while the process step of laser welding and its WEZ weak point of the blanks / partners is eliminated in comparison to the TWB process.

By a sensible arrangement of a V-structure at the junction, the corresponding connection of the parts in this connection region is promoted and achieved, advantageously the high temperatures during hot forming and achieved as a result of temperature, especially in steel material ductility of the material for the connection process is conducive and beneficial in particular at least partially produced in an inert environment (oxide-inhibiting environment).

In a further development, the invention proposes that a product / blank / blank assembly, etc., be provided with at least one point to be reinforced with a V-structure and a Doppler to the partner for alloys with significant difference in strength at the connection temperature at its junction not advantageous with V Structure is provided or vice versa V-structured. If the difference in strength is too small and the V-structure is impermissibly deformed for a sensible positive connection, a complementary V-structure is sensibly arranged. The complementary V-structure can also be advantageously used for more complex, more curved components.

Accordingly, it is possible, for example, to provide a partner / blank / blanket assembly, etc. at a / corresponding joint / s with the V-structure (s). The amplifying Doppler (even several) may remain in the region forming the joint possibly without V-structure or have complementary V-structure and placed over and / or below the V-structure zone of the partner / blank / blank composite and connected to this so that the desired connection is achieved. Respectively the material strength of the partners to be connected adapted inversely V-structured. There are any combinations of V-structures in the base partner / partner network and not provided with V-structure or complementary V-structure Doppler and vice versa, which is advantageous in each case the strength difference between the alloys to be joined at the connection temperature is considered as well as the strength / Stiffness of the final product. It may also be advantageous to equip the base component at the same location of both surfaces with materials / Dopplers that are different on both sides, whereby advantageously all three partners should also be connected to each other at least partially by material engagement so that the base component appears as "cast in" at this point.

In order to achieve as far as possible a continuous planar contour of the component in the finished component on a surface, it can be provided that the partner in the region of the connection point, on which the Doppler is / are positioned, is so cranked that after the connection the desired page creates a layer. For example, cranking according to the difference between the Doppler thickness forming the plane minus the depression depth of the Doppler to be punched in (in cases when the partner to be pressed is thinner or the same thickness or the offset is not used in its entirety, then the thinner partner to be cranked is the one to select the plane) , It can also be cranked vice versa, depending on which component side the flat surface is to be realized.

By the offset is achieved that at least one side of the finished component on the desired side / joint a flat continuous surface is provided.

2) For example consisting of different base material products / groups

• 2a) Beispielsweise Partner auch Partnerverbunde aus gleichem Basismaterial auch unterschiedlicher Dicke und möglicherweise verschiedenen Legierungen, wobei für Basismaterial für Stahllegierungen vorteilhaft zumindest ein Partner austenitisiert und/oder gehärtet werden soll. Durch die Anordnung von Partnern auch mehreren Partnern, die das spätere Bauteil bilden, ist es möglich, auch bei Partnern mit unterschiedlicher Dicke oder auch unterschiedlicher Legierungen des Basismaterials beispielsweise 22MnB5 und einer ZStE Stahllegierung mit einem oder mehreren Doppler/-n sowohl nur einseitig wie auch beidseitig zu versehen, wobei die entsprechenden Verbindungsmechanismen vorgesehen sind, die bereits teilweise vorhergehend angegeben sind. Zusätzlich ist vorgesehen: – Alle Partnerverbindungsstellen (Bereiche für Dopplerverstärkung oder für einen Anschlusspartner für Partnerverbund) beispielsweise für Basismaterial für Stahl/Stahl-Legierungen der beispielsweise mit beidseitiger AlSi-Schicht oder anderem Lotmittel vorteilhaft versehenen Stahlbleche die vorteilhaft zumindest in Teilschritten in einer oxidbildenden Umgebung hergestellt werden sollen ohne/mit V-Struktur werden vorzugsweise für AlSi-Schicht oberhalb ca. 660°C (Schmelzbereich der AlSi-Schicht)erwärmt, ohne die AlSi Bestandteile völlig zu oxidieren. Die Erwärmung der zu verbindenden Stellen, sollte vorteilhaft in einer oxidbildender Umgebung schnell ablaufen, vorzugsweise induktiv oder durch Widerstandserwärmung und vorteilhafterweise mit Unterstützung eines Zusatzlots bzw. Flussmittels. – Alle Partner-/Dopplerverbindungsstellen (Bereiche) der beispielsweise für Stahlbasispartner mit beidseitiger AlSi-Schicht versehenen Stahlpartner gleicher oder unterschiedlicher Wanddicke und/oder Legierung mit V-Struktur bzw. komplementärer V-Struktur bzw. Formschluss-V-Struktur werden vorteilhafterweise in einer nicht oxidbildender Umgebung (Schutzgasumgebung) angewärmt vorzugsweise auf Temperaturdifferenz bei der eine Verformung der V-Struktur (Legierungsabhängig) während des Verbindungsvorgangs vermieden wird, und so, dass während der Verbindung der Schmelzbereich der AlSi-Schicht erreicht wird (= Löten). Während des Verpressens und/oder Verbindens und/oder Umformens soll an den Verbindungsoberflächen mindestens die Schmelztemperatur der AlSi-Schicht erreicht werden, ohne dass diese weitgehend oxidiert, vorzugsweise ca. 680°C. Die AlSi-Schicht sollte aber vorteilhaft in den übrigen Bereichen zum Al-Oxid umgewandelt werden bzw. andersartig vor Korrosion geschützt werden. – Beispielsweise für stark verformte Bauteile mit steilen Wänden werden die Partner und Doppler zumindest partiell erwärmt vorteilhafterweise in eine Stauchvorrichtung (Presse) positionsgerecht eingelegt und miteinander ohne wesentlicher Verformung der nicht zu verbindenden Bereiche flächig verbunden, wobei z. B. die Produktauflagen und Stempel temperiert bzw. gekühlt sein können vorteilhaft in einer nicht oxidbildender Umgebung. – Während der beispielhaften Stauchung mit einer glatten nicht mit V-Struktur versehene Verbindungsstelle (Verbindung)vorteilhafterweise mit gekühlten Stauchwerkzeugen zumindest auf der mit V-Struktur versehenen Seite wird das mit V-Struktur kalte/kältere Material (höhere Festigkeit) in das weichere vorzugsweise warme/wärmere Vollmaterial vorteilhaft vollflächig eingedrückt. Dadurch entsteht im gesamten überlappten Bereich ein weitgehend gleichmäßiger Formschluss, wobei die auf beiden Oberflächen der Verbindung angeschmolzene AlSi-Schicht vorteilhafterweise mit Unterstützung eines zusätzlichen Lotes die zwei überlappten Oberflächen zumindest teilweise verlötet, wodurch ein Stoff- und vorteilhafterweise Formschluss zumindest teilweise im überlappten Bereich zwischen den jeweils zwei zu verbindenden Platinen entsteht. Ebenfalls kann noch zusätzlich gesehen von der zweiten Produktseite ein „Abdeckblech“ oder zusätzlicher Doppler angeordnet werden. – Die so zum Rohling verbundenen Einzelpartner (Doppler mit Produkt/Produktverbund usw.) können sofort einem weiteren Verfahrensschritt beispielsweise der Austenitisierung und anschließendem Presshärten wie gewohnt zugeführt werden. Während der Abkühlung des Bauteils/Verbindungsstellen sollte vorteilhafterweise auf die Wirkung der unterschiedlichen Wärmeausdehnungskoeffizienten geachtet werden, um einen zusätzlichen „Schrumpfungseffekt“ zu nutzen.

Furthermore, it is preferably provided that products / product composites of different base material compared to the Doppler, for example, steel alloys / aluminum alloys are joined together at the connection points.

• 2a) For example, partners also partner composites of the same base material and different thickness and possibly different alloys, wherein for base material for steel alloys advantageously austenitized and / or hardened at least one partner. Due to the arrangement of partners also several partners, which form the later component, it is possible, also with partners with different thickness or also different alloys of the base material, for example 22MnB5 and a ZStE steel alloy with one or more Doppler / -n both only on one side as well provided on both sides, wherein the corresponding connection mechanisms are provided, which are already partially specified above. In addition, the following is planned: - All partner connection points (areas for Doppler amplification or for one Connection partner for partner network), for example, for base material for steel / steel alloys of the example provided with double-sided AlSi layer or other solder advantageously provided steel sheets which are advantageously prepared at least in substeps in an oxide-forming environment without / with V-structure are preferably for AlSi layer heated above about 660 ° C (melting range of the AlSi layer) without completely oxidizing the AlSi components. The heating of the points to be connected should advantageously take place rapidly in an oxide-forming environment, preferably inductively or by resistance heating and advantageously with the assistance of an additional solder or flux. - All partner / Doppler junctions (areas) of the example provided for steel base partners with double-sided AlSi layer steel partner same or different wall thickness and / or alloy with V-structure or complementary V-structure or positive V-structure are advantageously not in one heated to an oxide-forming environment (inert gas environment) preferably to temperature difference at which a deformation of the V-structure (alloy-dependent) during the bonding process is avoided, and so that during the connection of the melting range of the AlSi layer is achieved (= soldering). During the pressing and / or bonding and / or reshaping, at least the melting temperature of the AlSi layer is to be achieved at the bonding surfaces, without these being largely oxidized, preferably about 680 ° C. The AlSi layer should, however, advantageously be converted into the Al oxide in the other regions or otherwise protected against corrosion. For example, for heavily deformed components with steep walls, the partners and Doppler are at least partially heated advantageously placed in a compression device (press) in position and connected to each other without substantial deformation of the non-connecting areas areal, wherein z. B. the product supports and stamp tempered or cooled may be advantageous in a non-oxide-forming environment. During the exemplary upset with a smooth non-V-shaped joint advantageously with cooled upsetting tools at least on the V-structured side, the V-structure cold / colder material (higher strength) in the softer one is preferably warm / warmer solid material is advantageously pressed over the entire surface. This results in a substantially uniform positive locking in the entire overlapped area, wherein the melted on both surfaces of the compound AlSi layer advantageously with the support of an additional solder, the two overlapped surfaces at least partially soldered, whereby a material and advantageously positive locking at least partially in the overlapped area between the in each case two boards to be connected is formed. Also seen in addition to the second product page, a "cover plate" or additional Doppler can be arranged. - The so connected to the blank individual partners (Doppler with product / product composite, etc.) can be immediately fed to another process step, for example, austenitization and subsequent press hardening as usual. During the cooling of the component / joints should be paid attention to the effect of different coefficients of thermal expansion advantageously to use an additional "shrinkage effect".

• 2b) Beispielsweise Partner aus unterschiedlichem Basismaterial gleicher oder unterschiedlicher Dicke und möglicherweise verschiedenen Legierungen, wobei für Basismaterial für Stahllegierungen vorteilhafterweise zumindest ein Partner austenitisiert und gehärtet werden soll.

It is also preferably provided that the partners, for example made of steel with partners made of other base material, for example, aluminum are connected to the composite sites.

• 2b) For example, partners made of different base material of the same or different thickness and possibly different alloys, wherein for base material for steel alloys advantageously at least one partner is austenitized and hardened.

• I. Beispielsweise Stahlplatinen/-partner aus hochfesten Stahllegierungen wie dem 22MnB5 oder dem Lufthärter ROBUSAL900 in Kombination mit niedrigerfesten St-Legierungen, wie beispielsweise einer ZStE Stahllegierung, die an mindestens einer Stelle und zumindest mit einem Doppler an dieser Stelle verstärkt werden sollen. – Vorteilhafterweise sollten alle Oberflächen der Partner in diesem Fall aus Stahl zumindest für die Herstellung in einer oxidbildender Umgebung mit einem oxidhemmendem Schutz in diesem Fall beispielsweise mit einer AlSi-Schicht versehen werden. – Die höherfesteren Partner werden vorteilhaft wie bereits im Vorhergehenden beschrieben mit V-Struktur an den zu verbindenden Stellen versehen. – Die weicheren Partner und oder Doppler werden vorteilhaft wie bereits beschrieben nach Bedarf mit einer zu der Partnerverbindungsstruktur komplementären V-Struktur versehen. – Alle Verbindungsoberflächen werden vorteilhafterweise wie bereits beschrieben vorteilhaft für zumindest Verfahrensschritte in einer oxidbildender Umgebung mit einer Lot-Schicht wie beispielsweise einer AlSi-Schicht zusätzlich zu beschichten gegebenenfalls noch vorteilhaft mit einem Flussmittel versehen. – Alle Partner/Doppler und Partnerverbunde mit Dopplern/Doppeldopplern/Abdeckteilen zueinander positionieren und mittels „Haftung/Fixierung/Lötung“ verbinden. – Den Partnerverbund mit positionierten Dopplern/Doppeldopplern usw. entsprechend behandeln, wie beispielsweise beschneiden, lochen und ähnliches und vorteilhaft anschließend der Erwärmung zuführen vorteilhaft in einer nicht oxidbildender Umgebung. – Bei stärker gekrümmten Bauteilen ist es vorteilhaft, vor dem Umformprozess die Verbindung zwischen den Partnern möglichst im flachen Zustand beispielhaft durch Verpressen herzustellen, um dann sofort dem Umformvorgang zuzuführen. Hierbei ist der Partnerverbund zumindest in den Bereichen, die hochfest vergütet werden sollen, auf der Vergütungstemperatur zu halten. Bei weitgehend flachen Bauteilen bzw. Bauteilen, bei denen der Formschluss nicht unbedingt vollflächig ausgeführt sein muss kann der Partner/Partnerverbund mit dem Doppler/-n dem Umformvorgang direkt zugeführt werden bei dem auch gleichzeitig die Verbindung/-en verbunden bzw. hergestellt wird/werden bzw. kann eine komplementäre V-Struktur angeordnet werden. – Die Verbindung/-en soll möglichst vollflächig als form- und zumindest teilweise stoffschlüssig ausgeführt werden unter Berücksichtigung der Anforderungen an das fertige Bauteil. – Der Umformvorgang wird mit den bereits zusammengeführten Partnern/Dopplern/Doppeldopplern usw. durchgeführt, bei weitgehend flachen Bauteilen beispielsweise direkt aus der Erwärmung, bei stärker gekrümmten Bauteilen und höheren Anforderungen an die Verbundfestigkeit mit dem Zwischenschritt der vorherigen Verbindung im möglichst flachem Partnerzustand. Während der Abkühlung sollte vorteilhafterweise auf die Wirkung der unterschiedlichen Wärmeausdehnungskoeffizienten geachtet werden um einen zusätzlichen „Schrumpfungseffekt“ zu nutzen.
• II. Beispielsweise L-Basismaterial wie Aluminiumpartner aus hochfesten Al-Legierungen wie beispielsweise EN AW7020 oder 7075 in Verbindung mit H-Basismaterial wie hochfesten Stahllegierungen wie den 22MnB5 oder ROBUSAL900

By way of example, important options / connections are discussed, especially for the automotive industry, such as:

• I. For example, steel blanks / partners of high strength steel alloys such as the 22MnB5 or the air hardener ROBUSAL900 in combination with lower strength St alloys, such as a ZStE steel alloy, to be reinforced at least one location and at least one Doppler at that location. Advantageously, all surfaces of the partners in this case made of steel, at least for production in an oxide-forming environment, should be provided with an oxide-inhibiting protection in this case, for example with an AlSi layer. - The higher-strength partners are advantageously provided as previously described with V-structure at the points to be connected. Advantageously, the softer partners and or Doppler are provided with a V-structure which is complementary to the partner connection structure, as already described. Advantageously, as already described, all connecting surfaces are advantageously additionally provided with a flux for at least process steps in an oxide-forming environment with a solder layer, for example an AlSi layer, in addition to coating. - Position all partners / Doppler and partner networks with Doppler / double Doppler / cover parts to each other and connect by means of "adhesion / fixation / soldering". - Treat the partner network with positioned Dopplers / Doppeldopplern, etc. accordingly, such as pruning, punching and the like and advantageously then the heating supply advantageous in a non-oxide-forming environment. - For more curved components, it is advantageous before the forming process, the connection between the partners as flat as possible, for example, by pressing to produce, and then immediately supply the forming process. Here, the partner network is at least in the areas that are to be coated high-strength, to keep the tempering temperature. In the case of largely flat components or components in which the form-fit does not necessarily have to be executed over the entire surface, the partner / partner composite can be fed directly to the forming process with the Doppler / -n in which the connection / s is connected or produced simultaneously or a complementary V-structure can be arranged. - The compound / -en should as far as possible over the entire surface as a form and at least partially cohesively performed, taking into account the requirements of the finished component. - The forming process is carried out with the already merged partners / Dopplers / Doppeldopplern etc., with largely flat components, for example, directly from the heating, with more curved components and higher demands on the bond strength with the intermediate step of the previous connection in the lowest possible partner state. During cooling, the effect of the different thermal expansion coefficients should advantageously be taken into account in order to utilize an additional "shrinkage effect".
• II. For example, L-base material such as aluminum partner of high-strength Al alloys such as EN AW7020 or 7075 in conjunction with H-base material such as high-strength steel alloys such as the 22MnB5 or ROBUSAL900

Furthermore, it is provided in particular hereby that, for example, a partner / Doppler / double Doppler consisting of an H-material such as high-strength steel, for example a 22MnB5, is provided with an AlSi coating and provided with a V-structure in the region of the connection point and an example of L-material such as aluminum or aluminum alloy existing partner / Doppler is provided with its connection point.

The connection point of the H partner / steel partner / Doppler provided at least partially with V structure is provided with an oxide-inhibiting layer, advantageously the AlSi layer applied to the H partner / steel partner in the connection region at least in the region provided with V structure is advantageously removed for the process steps in oxide-forming environment prior to application of the solder layer or is supplemented with a compatible solder that does not oxidize the Doppler / steel partner itself during Austenitisieren largely and continue to diffusion in the partner to be joined, for example, aluminum is ready, for example, a Ni, Zn layer or Sn layer or brass layer.

• – Alle V-Strukturen sind vorteilhaft in den Stahlpartnern (H-Partnern) angeordnet bzw. immer, wenn sinnvoll, in der bei der Verbindungstemperatur höher festeren Legierung. Sollten hohe Anforderungen an das Endbauteil gestellt sein, die die V-Struktur im bestimmten Partner nicht zulassen, dann kann eine umgekehrte „komplementäre“ V-Struktur vorteilhafter sein wie auch für stark gekrümmte Fertigprodukte.
• – Vorteilhaft sind alle V-Strukturen für Verfahrensschritte in einer oxidbildender Umgebung mit einer oxidhemmenden Schicht/-en zu versehen, die nach dem Austenitisieren weitgehend diffusionsfähig bleibt, beispielsweise mit einer Ni-, Zn-Schicht oder Messingschicht versehen.
• – Das Verbindungswerkzeug/-vorrichtung sollte vorteilhaft (L-materialseitig) entsprechend aluseitig in dem zu verbindenden Bereichen auf ca. 550°C oder darunter temperiert sein und in den übrigen Bereichen, in denen sich die Al-Partner befinden, unterhalb 450 °C, in den Bereichen der beispielhaften St-Partner sollte die Temperatur vorteilhafterweise oberhalb ca. 660°C gehalten werden wie auch beispielhaft der Stempel beim H-Material entsprechend stahlseitig auf eine Temperatur, die einerseits das Härten des beispielsweise Stahlbereichs nicht wesentlich beeinträchtigt und andererseits den Al-Partner nicht verschmilzt, vorteilhafterweise um oder oberhalb von ca. 660°C.

For example, for the bond between partners / Dopplers such as steel partners, which must be austenitized / hardened, and for example aluminum or aluminum alloys is advantageous:

• - All V-structures are advantageously arranged in the steel partners (H-partners) or always, if appropriate, in the higher bond strength at the bonding temperature. If high demands are placed on the final component, which do not allow the V-structure in the particular partner, then a reverse "complementary" V-structure may be more advantageous as well as for highly curved finished products.
• Advantageously, all V-structures for process steps in an oxide-forming environment are to be provided with an oxide-inhibiting layer / s which, after austenitizing, remains largely diffusible, for example provided with a Ni, Zn or brass layer.
• The bonding tool / device should advantageously (L-material side) according to the aluminum side in the areas to be connected to about 550 ° C or below tempered and in the other areas where the Al partners are below 450 ° C, in the areas of the exemplary St-partners, the temperature should advantageously be kept above about 660 ° C as well as the example of the stamp in the H-material according to the steel side to a temperature that does not substantially affect the hardening of the example steel area on the one hand and on the other hand the Al Partner does not fuse, advantageously at or above about 660 ° C.

• – Bereitstellen der H-Partner wie Stahlpartner/Doppler/Doppeldoppler aus dem Material beispielhaft 22MnB5 / ROBUSAL900 mit den entsprechenden V-Strukturen und speziellen V-Strukturen für die Dopplerbereiche
• – Bereitstellen der H-Partner/L-Partner Stahlpartner/Doppler/Doppeldoppler usw. aus den Legierungen, die nicht gehärtet sein müssen, mit den entsprechenden V-Strukturen und/oder bzw. komplementären V-Strukturen für die Verbunde der einzelnen Partner wie auch desgleichen für die vorgesehenen Doppler
• – Bereitstellen der L-Partner/L-Doppler wie Aluminiumpartner / Al-Legierungen-Partner zum Verbinden vorteilhafterweise versehen an den zu verbinden Stellen mit Lotmittel und eventuell Flussmittel wie auch desgleichen jedoch mit speziellen V-Struktur versehen für die Dopplerbereiche
• – Austenitisieren der 22MnB5 / ROBUSAL900 Partner/Doppler, wobei die Verbindungsbereiche inkl. der V-Struktur mit oxidhemmenden Schicht beispielsweise Ni-, Zn- und/oder Messing-Schicht versehen sind und gegebenenfalls mit einem Flussmittel(eventuelle Entfernung der AlSi-Schicht an den überlappten Verbindungsoberflächen, V-strukturierten Oberflächen beidseitig).
• – Paralleles zeitabgestimmtes Erwärmen der nicht zu härtenden H-Partner/Doppler entsprechend St-Partner/Doppler usw. auf oberhalb von ca. 660°C, wobei zumindest die vorher mit V-Struktur versehenen Verbindungsoberflächen zu den L-Partnern/Dopplern entsprechend Al-Partnern/Dopplern usw. mit einer Lotschicht beispielhaft einer AlSi-Schicht zu versehen sind und gegebenenfalls mit einem Flussmittel, wobei die mit V-Struktur versehenen Oberflächen vorteilhaft gänzlich mit der Lotschicht und gegebenenfalls Flussmittel zu benetzen sind. Die Verbindungsoberflächen (glatt) zu den austenitisierten (hochfesten Stählen) sind ebenfalls vorteilhafterweise mit einer Lotschicht beispielsweise einer AlSi-Schicht oder Zn-Schicht oder Messing- Bronzeschicht zu versehen zumindest für Verfahrensschritte in oxidbildender Umgebung.
• – Paralleles Erwärmen der L-Partner/L-Doppler entsprechend Al-Partner/-en bzw. Al-Doppler usw. auf ca. 450°C wobei die Verbindungsbereiche vorteilhafterweise auf ca. 550 °C erwärmt werden sollten, deren Verbindungsoberflächen vorteilhafterweise mit einem Lot (AlSi-Basis – sollten mit dem Lot auf der austenitisierten Platine/Doppler verträglich/kompatibel sein) und vorteilhafterweise zusätzlich mit einem Flussmittel versehen sein sollten.
• – Bereitstellen einer Verbindungsvorrichtung für Bauteile mit beispielsweise steilen Wänden in der sich weitgehend an den zu verbindenden Stellen/Bereichen weitgehend flache (können auch schon leicht vorgeformt sein)Dopplerverbindenden bzw. Partner- bzw. Partnerverbundpositionierende Aufnahmen befinden, die auch temperiert (erwärmt oder gekühlt)sein können. Der Verbindungsstempel (Druckstempel der Auflagengeometrie konform ausgebildet) kann beliebig gestaltet werden als einstückig mit Ausnehmungen in den nicht zu verbindenden Bereichen für die Doppler bzw. Rohlinge oder als beliebige Vielzahl von Stempeln, die individuell temperiert sein können.
• – Auflegen/Zuführen der vorteilhafterweise flachen erwärmten Partnern/Dopplern und/oder Partnerverbunden vorteilhaft in der Reihenfolge, dass die L-Partner wie AL-Partner/Verbunde unten auf den Auflagen positioniert sind, dann darüber die H-Partner wie St-Partner entsprechend positioniert werden. Im Verbindungsbereich St-St sollte vorteilhafterweise die V-Struktur unten positioniert werden. Damit wird vorteilhafterweise der Partner mit höchster Temperatur (Weichzustand) zuletzt aufgelegt. Das gleiche gilt für die Behandlung der Verbindung/-en zwischen den Partnern und Dopplern.
• – Bei stark/stärker gekrümmten Bauteilen ist vorteilhaft das Verbinden der Partner untereinander wie auch zwischen den Partnern und deren Dopplern infolge beispielhaft einer Stempeldruckaufbringung, wobei der Stempel wie auch die zugehörige Matrize eines Werkzeugs vorteilhafterweise bei erwärmten Partnern/Dopplern weitgehend nur die zu verbinden Bereiche berührt, wobei vorteilhafterweise die einzelnen Verbindungsstellen auch einzeln verbunden werden können. Der Stempel wie auch die Auflage kann/können entsprechend temperiert sein. Während dieser Operation ist darauf zu achten, dass die austenitisierten Partner/Doppler ihre Austenitisierungstemperatur außerhalb der Verbindungsstellen weitgehen behalten.
• – Zuführen der verbundenen Partner mit Dopplern bzw. Partnerverbunde mit Dopplern dem Presshärteumformwerkzeug oder sonstigem Umformwerkzeug vorteilhafterweise bei erhöhter Temperatur vorteilhaft in einer nicht oxidbildender Umgebung.
• – Bei Verwendung von Partnern/Dopplern, die nicht wärmebehandelt sein müssen und/oder auch bei der Raumtemperatur geformt werden können, können die verbundenen Partner mit Dopplern bzw. zu Partnerverbunden mit Dopplern auch abgelegt und später der Umformung bei Raumtemperatur zugeführt werden.
• – Bei Verwendung von höherfesteren L-Materialien entsprechend Al-Legierungen wie beispielsweise ENAW 7020 sollte vorteilhaft auch das Umformwerkzeug zumindest in dem Bereich der hochfesten Al-Legierung temperiert sein, vorteilhafterweise im Bereich um ca. 450°C und/oder die Al-Legierung eine Temperatur in diesem Bereich besitzen. In den Bereichen des/der austenitisierten St-Partner/Doppler soll das Umformwerkzeug vorteilhafterweise gekühlt bleiben. Während der Abkühlung sollte vorteilhafterweise auf die Wirkung der unterschiedlichen Wärmeausdehnungskoeffizienten geachtet werden, um einen zusätzlichen „Schrumpfungseffekt“ in der Doppler-V-Struktur zu nutzen.

Exemplary the manufacturing steps for 22MnB5 / ROBUSAL900 & ZStE & Alu:

• Providing the H partners such as steel partners / Doppler / double Doppler from the material exemplified by 22MnB5 / ROBUSAL900 with the corresponding V structures and special V structures for the Doppler regions
• - Providing the H-Partner / L-partners steel partners / Doppler / Doppeldoppler etc. from the alloys that need not be hardened, with the appropriate V-structures and / or complementary V-structures for the bonds of each partner as well likewise for the intended Doppler
• Provide the L-partner / L-Doppler as aluminum partner / Al alloy partner for connecting advantageously provided at the points to be joined with solder and possibly flux as well as the like but provided with special V-structure for the Doppler areas
• Austenitizing the 22MnB5 / ROBUSAL900 partners / Doppler, wherein the connection areas including the V-structure are provided with oxide-inhibiting layer, for example Ni, Zn and / or brass layer and optionally with a flux (possible removal of the AlSi layer to the overlapped joint surfaces, V-textured surfaces on both sides).
• Parallel time-matched heating of the non-hardening H-partners / Doppler according to St-Partner / Doppler etc. above about 660 ° C., whereby at least the previously V-structured connection surfaces to the L-partners / Dopplers corresponding to Al Partners / Dopplers, etc. are provided with a solder layer exemplified by an AlSi layer and optionally with a flux, wherein the V-structured surfaces are advantageous to wet completely with the solder layer and optionally flux. The joining surfaces (smooth) to the austenitized (high-strength steels) are likewise advantageously provided with a solder layer, for example an AlSi layer or Zn layer or brass bronze layer, at least for method steps in an oxide-forming environment.
• Parallel heating of the L-partner / L-Doppler according to Al partners / Al-Doppler etc. to about 450 ° C wherein the connection areas should be heated advantageously to about 550 ° C, the connecting surfaces advantageously with a Lot (AlSi base - should be compatible / compatible with the solder on the austenitized board / Doppler) and advantageously additionally provided with a flux.
• Providing a connection device for components with, for example, steep walls in which largely largely flat (can already be easily preformed) at the points / areas to be connected) Doppler connecting or partner or Partnerverbundpositionierende recordings are also tempered (heated or cooled) could be. The connecting punch (plunger of the pad geometry conformed formed) can be arbitrarily designed as integral with recesses in the unconnected areas for the Doppler or blanks or any number of punches that can be tempered individually.
• - Laying / feeding the advantageously flat heated partners / Dopplers and / or partner associations advantageously in the order that the L partners are positioned like AL partners / composites on the lower part of the supports, then above the H partners as St partners positioned accordingly become. In the connecting region St-St, the V-structure should advantageously be positioned at the bottom. Thus, the partner with the highest temperature (soft state) is advantageously placed last. The same applies to the treatment of the connection between partners and Dopplers.
• - For strongly / more curved components is advantageous to connect the partners with each other as well as between the partners and their Dopplern as an example of a stamp printing application, the stamp as well as the associated die of a tool advantageously with heated partners / Doppler largely touches only to connect areas , wherein advantageously the individual connection points can also be connected individually. The stamp as well as the support can / can be tempered accordingly. During this operation, care must be taken that the austenitized partners / Doppler retain their austenitizing temperature outside the junctions.
• - Supplying the associated partners with Dopplers or partner compounds with Dopplers the Presshärteumformwerkzeug or other forming tool advantageously at elevated temperature advantageous in a non-oxide-forming environment.
• - When using partners / Dopplers, which need not be heat-treated and / or can be molded at room temperature, the connected partners can also be deposited with Dopplers or to Doppler partner connections and later supplied with the transformation at room temperature.
• - When using higher-strength L-materials corresponding to Al alloys such as ENAW 7020 should also be advantageous tempered the forming tool at least in the range of high-strength Al alloy, advantageously in the range of about 450 ° C and / or the Al alloy have a temperature in this range. In the areas of the austenitized St-partner / Doppler, the forming tool should advantageously remain cooled. During cooling, attention should advantageously be paid to the effect of the different thermal expansion coefficients in order to utilize an additional "shrinkage effect" in the Doppler V-structure.

• III. For example, L-partner / Doppler according aluminum partners / Doppler made of aluminum or high-strength Al alloys such as EN AW 7020 or 7075 in conjunction with cold-formable H-partners / H-Dopplers in accordance with steel alloys such as the ZStE steel alloy.

For this purpose, it is particularly provided that the partners / Doppler / Doppeldoppler etc. in the region of the connection point / -en are advantageously connected by a hot connection with at least at the connection points heated partner / Doppler areas and optionally cold or hot formed according to the alloys used, wherein the partners are at least partially positively and advantageously also at least partially cohesively connected. In addition, it can be provided that the position-retaining affiliated partner compounds with Dopplers / Doppeldopplern etc. before forming cold trimmed shape, perforated, etc., and then or advantageously cold-formed simultaneously.

• – Bereitstellen der H-Partner/H-Doppler wie Stahlpartner aus dem Material beispielhaft ZStE Stahllegierungen mit den entsprechenden V-Strukturen und vorteilhafterweise versehen mindestens an den zu verbinden Stellen/V-Strukturen mit Lotmittel und eventuell Flussmittel
• – Bereitstellen der L-Partner/L-Doppler wie Aluminiumpartner / Al-Legierungen-Partner zum Verbinden vorteilhafterweise versehen an den zu verbinden Stellen mit Lotmittel und eventuell Flussmittel.
• – Erwärmen zumindest der Verbindungsbereiche der St-Partner/Doppler auf oberhalb von ca. 660°C oder mehr, wobei die Verbindungsbereiche inkl. der V-Strukturoberflächen vorteilhaft mit oxidhemmenden und diffusionsfähigen Schicht/-en beispielsweise AlSi-Schicht oder einer Zn-Schicht versehen sind und gegebenenfalls mit einem Flussmittel vorteilhaft zumindest für die Verbindung in einer oxidbildender Umgebung.
• – Vorteilhaftes paralleles Erwärmen des/der L-Partner/L-Doppler wie Al-Partner bzw. deren Legierten-Partnern auf ca. 450°C oder mehr, wobei zumindest die Verbindungsbereiche vorteilhafterweise auf ca. 550 °C erwärmt werden sollten, deren Verbindungsoberflächen vorteilhafterweise mit einem Lot (AlSi-Basis – sollte mit dem Lot auf dem St-Partner verträglich/kompatibel sein) und vorteilhafterweise zusätzlich mit einem Flussmittel versehen sein.
• – Bereitstellen einer Verbindungsvorrichtung für Bauteile/Produkte mit steilen Wänden in der sich weitgehend an den zu verbindenden Stellen/Bereichen weitgehend flache (können auch schon vorgeformt sein) partner-/doppler- bzw. partnerverbundpositionierende Aufnahmen befinden, die auch temperiert (erwärmt oder gekühlt)sein können. Der beispielsweise Verbindungsstempel (Druckstempel der Auflagengeometrie konform ausgebildet) kann beliebig gestaltet werden als einstückig mit Ausnehmungen in den nicht zu verbindenden Bereichen oder als beliebige Vielzahl von Stempeln, die individuell temperiert sein können. Die Erwärmung der Verbindungsbereiche kann auch direkt in der Verbindungsvorrichtung stattfinden beispielsweise induktiv/konduktiv vorteilhaft in einer nicht oxidbildender Umgebung.
• – Vorteilhaftes Auflegen/Zuführen der beispielsweise erwärmten Partner/Doppler und/oder Partnerverbunde mit/ohne Dopplern usw. in der Reihenfolge, dass die L-Partner wie Al-Partnern/Verbunde vorteilhafterweise unten auf den Auflagen positioniert sind, dann darüber die H-Partner wie St-Partner entsprechend positioniert werden. Im Verbindungsbereich St-St sollte vorteilhafterweise die V-Struktur unten positioniert werden. Damit wird vorteilhafterweise der Partner mit höchster Temperatur zuletzt aufgelegt.
• – Verbinden der Partner untereinander bzw. Partner/Partnerverbunde mit Dopplern usw. infolge einer beispielsweisen Stempeldruckaufbringung, wobei der Stempel wie auch die Matrize vorteilhafterweise weitgehend nur die zu verbinden Bereiche berührt, wobei vorteilhafterweise die einzelnen Verbindungsstellen auch einzeln verbunden werden können. Der beispielhafte Stempel wie auch die Auflage kann/können entsprechend temperiert sein.
• – Zuführen des verbundenen Partners mit dem/den Doppler/-n bzw. Partnerverbunds mit dem/den Doppler/-n usw. dem Umformwerkzeug oder sonstigem Formwerkzeug vorteilhafterweise bei erhöhter Temperatur für höherfestere Aluminiumlegierungen.
• – Bei Verwendung von allen Partnern/Dopplern, die auch bei der Raumtemperatur geformt werden können, können die verbundenen Partner/Doppler auch abgelegt und später der Umformung bei Raumtemperatur zugeführt werden.
• – Beispielhaft bei Verwendung von höherfesteren L-Partnern wie Al-Legierungen wie beispielsweise En AW 7020 sollte vorteilhaft auch das Umformwerkzeug zumindest in dem Bereich der hochfesten Al-Legierung temperiert sein, vorteilhafterweise im Bereich um ca. 450°C, und/oder die Al-Legierung eine Temperatur in diesem Bereich besitzen. In den Bereichen der H-Partner wie austenitisierten St-Platine/-en soll das Umformwerkzeug vorteilhafterweise gekühlt bleiben. Das Beschneiden der positionshaltend verbundenen Partner/Dopplern kann vor der Erwärmung und insbesondere vor der Kaltumformung erfolgen, oder aber auch bei der Erwärmung oder auch zeitgleich mit der Kaltumformung im Kaltumformwerkzeug.

For example, the manufacturing steps for example Kaltformbaren St for example, the ZStE steel alloy as H-Partner & Alu / Al alloys as L-partner:

• - Provide the H-partner / H-Doppler as steel partners from the material example ZStE steel alloys with the corresponding V-structures and advantageously provided at least at the connect points / V-structures with solder and possibly flux
• Provide the L-partner / L-Doppler as aluminum partner / Al alloy partner for connecting advantageously provided at the points to be joined with solder and possibly flux.
• - Heating at least the connection areas of the St-partner / Doppler above about 660 ° C or more, wherein the connection areas including the V-structure surfaces advantageously provided with oxide-inhibiting and diffusible layer / -en example AlSi layer or a Zn layer and optionally with a flux are advantageous at least for the compound in an oxide-forming environment.
• - Advantageous parallel heating of the / the L-partner / L-doppler such as Al partners or their alloyed partners to about 450 ° C or more, wherein at least the connecting portions should be heated advantageously to about 550 ° C, the connecting surfaces advantageously with a solder (AlSi base - should be compatible with the solder on the St partner / compatible) and advantageously additionally provided with a flux.
• - Providing a connection device for components / products with steep walls in which largely at the points / areas to be connected largely flat (may also be preformed) partner / doppler or partnerverbundpositionierende recordings are also tempered (heated or cooled) could be. The example of a connection punch (pressure stamp of the pad geometry conformed) can be designed arbitrarily as integral with recesses in the unconnected areas or any number of punches that can be tempered individually. The heating of the connection regions can also take place directly in the connection device, for example inductively / conductively advantageously in a non-oxide-forming environment.
• - Advantageous laying on / supplying the example heated partners / Doppler and / or partner networks with / without Doppler etc. in the order that the L-partners as Al partners / composites are advantageously positioned on the bottom of the pads, then about the H-partner how St partners are positioned accordingly. In the connecting region St-St, the V-structure should advantageously be positioned at the bottom. Thus, the partner with the highest temperature is advantageously launched last.
• - Connect the partners with each other or partners / partner networks with Dopplers, etc. as a result of an example stamping application, the stamp as well as the die advantageously largely only touches the areas to be connected, advantageously the individual joints can also be connected individually. The exemplary stamp as well as the edition can / can be tempered accordingly.
• Supplying the connected partner with the Doppler (s) or partner composite with the Doppler (s) etc. to the forming tool or other molding tool, advantageously at elevated temperature for higher-strength aluminum alloys.
• - When using all partners / Dopplers, which can also be molded at room temperature, the connected partners / Doppler can also be deposited and later fed to the forming at room temperature.
• - Exemplary when using higher-strength L-partners such as Al alloys such as En AW 7020 should also be advantageous tempered the forming tool at least in the range of high-strength Al alloy, advantageously in the range of about 450 ° C, and / or the Al alloy have a temperature in this range. In the areas of H-partners such as austenitized St-board / -en the forming tool should remain advantageously cooled. Pruning the positionally-retaining affiliated partners / Dopplers may be prior to heating and in particular before cold forming, or even during heating or at the same time as cold forming in the cold forming tool.

The required for the production of a corresponding component / product partners / Doppler can from the outset have dimensions that correspond approximately or exactly the dimension of the finished component / product, so that not all partners / Doppler of the product / composite have the same dimensions, but different Dimensions, as explained later in the embodiment. The trimming, perforation, etc. frees the partners of superfluous material, which then does not have to be reshaped in the subsequent forming process and must be removed later, but the trimming can be made cost-saving before forming or integrated in the forming process.

Due to the inventive design of the method, it is possible to produce components with reinforced zones / areas in mixed construction of any kind that meet the high requirements in lightweight body construction, the specified joining connection technology is well controlled and inexpensive, so that corresponding parts in Mixed construction / lightweight construction can be provided inexpensively and at the same time meet high demands on strength and / or stiffness and / or crash behavior, etc. in uncompromising lightweight construction.

The invention further relates to a cold- and / or hot-formed component / product advantageously made of metal or at least partially made of metal, as specified in claims 15 to 19. This is formed at least from a base material (partner) and at least one Doppler / Doppeldoppler / cover / connection part, etc. of any material preferably metal or example more than at least two, in each case directly adjacent connection points connected partners, for example, boards / components that at least at one Position a Doppler, etc. have, for example, the junction of a first partner is provided with V-structure and the junction of a following partner, the V-structure is connected across the V-structure region and at least partially have a complementary V-structure can, or is provided directly with a positive connection V-structure, in particular produced by the method according to one of claims 1 to 14 wherein the base body can be made in principle with any technologies of any combination of materials, any shapes, etc.

In this case, it may be provided that the partners / partner networks with the Dopplers in the region of the V-structure are connected to one another at least partially positively and advantageously also at least partially cohesively.

It can also be provided that the V-structured connection region of the partner for Doppler etc. is cranked around the overlapping Doppler in order to achieve a flat surface / surface.

Furthermore, it is preferably provided that the H-partner / Doppler advantageously made of steel and advantageous for hot forming in an oxide-forming environment of in particular an AlSi-coated thermoformable steel and at least one likewise thermoformable partner / Doppler etc. as another partner and / or a cold-formable partner / Doppler made of steel and / or an L-partner / Doppler example of aluminum or their alloys, etc. consists. Essentially, the proposed method makes it possible to provide components made of all material alloys, especially metal alloys, and combinations thereof with one another according to the requirements of the component, with combinations with non-metals also not being excluded.

This is finally provided that the partners / Doppler etc. preferably boards in the connection area in addition to the form-fitting are also advantageously at least partially cohesively connected to each other and / or if possible also plated connected where appropriate, advantageously using an additional solder and / or flux at least an additional positive connection to strive in the V-structure is where the solder fills in possible vacancies in the V-structure.

A schematic embodiment of the method according to the invention for components of the type specified in the claims is shown in the drawing and described in more detail below.

It shows:

1 exemplify a part of a body component in view;

2 The exemplary body component combined with Doppler amplifiers, also in view.

Based on the exemplary drawings, the method for producing corresponding, for example, cold or hot formed components made of sheet metal is explained in detail.

It can be a partner or body 1 be provided of metal, sheet metal or the like and are positioned accordingly in the preparation, wherein the partner / body 1 may initially be a planar board or a board section or can be realized in other forms.

The partner / basic body 1 is at a junction for connection to a Doppler / amplifier described later, having a connection structure 2 . 3 . 4 equipped, for example, perforated or otherwise structured.

On the connection structure 5 . 6 . 7 In the production of the corresponding component, a suitably dimensioned and formed Doppler / amplifier 2 . 3 . 4 hung up. Likewise, both partners can only be provided with a form-fit V structure at the same time after merging.

The connection structure 5 . 6 . 7 is preferably incorporated in the material which has the higher strength or hardness. For example, with a partner 1 made of steel and Doppler 2 . 3 . 4 made of light metal is the connecting structure 5 . 6 . 7 in the partner made of steel. If the partner 1 made of light metal and the Doppler 2 . 3 . 4 Made of steel, the connection structure 5 . 6 . 7 in the Dopplers 2 . 3 . 4 intended.

The correspondingly arranged parts 1 . 2 . 3 . 4 are stapled or fixed positionally. Subsequently, the overall component formed in this way can be trimmed, for example, by shaping, or even perforated or the like, so that an intermediate product is formed. This formed from the stapled or fixed components part can be heated, for example, to a suitable temperature for forming in an oven. Upon reaching a corresponding temperature, for example when austenitizing the steel component has taken place, the heated blank can be thermoformed while simultaneously or before a positive connection V-structure is generated, in particular in a corresponding hot forming tool, which at the same time partially or partially by appropriate cooling in the tool a hardening of the component can take place. The hot forming of the overall blank not only achieves the component shape as shown in the drawing figures, but it also becomes a positive fit between those with connecting structure 5 . 6 . 7 provided areas and the provided without connecting structure areas of the components to be joined together, so that the finished component is provided inexpensively.

In order to achieve that the corresponding finished component at least on one side has a substantially flat surface, the Doppler 2 . 3 . 4 each in a cranked area of the partner 1 be used or connected to such a cranked area, so that when joining the parts on one side, for example, the top as in 2 can be seen, a substantially flat surface is provided, so the Doppler 2 . 3 . 4 not over the surface of the partner 1 protrude.

The Doppler 2 . 3 . 4 may have different thickness or consist of different materials, in particular metal alloys such as steel, light metal or other materials.

Also a superposition of Dopplers 2 . 3 . 4 and partners 1 is possible, for example, a partner on the underside or top side with Dopplers 2 . 3 . 4 is provided or a partner on a page with Dopplers 2 . 3 . 4 is provided and on this part another partner 1 applied and via appropriate connection structures 5 . 6 . 7 the parts are joined together. If components made of steel are used, they are preferably provided with an oxide-inhibiting coating, for example an Al-Si coating, with the exception of the region in which the connecting structure 5 . 6 . 7 is trained. When connecting appropriate partners 1 with doppler 2 . 3 . 4 is achieved by the connection structure in the connection region of these elements that the material of the example softer element in the region of the connection structure 5 . 6 . 7 is pressed into the corresponding V-structure of the other component, so that it comes to a positive connection, preferably even to a cohesive connection.

The finished component, as for example in 2 can be shown laterally a protruding flange 14 which may also be designed as a Doppler, which then preferably consists of similar material, as to be connected body components that are present in the Karosseriefertigung and in which the corresponding component is integrated.

The Doppler 3 For example, may serve for the attachment of fasteners, while the Doppler 2 For example, suitable and intended as strength enhancement for a door lock. The Doppler or amplifier 4 can for example serve for a Torsionssteifigkeitserhöhung of the component.

The invention is not limited to the embodiments, but in the context of the disclosure often variable.

All disclosed in the description and / or drawing single and combination features are considered essential to the invention.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102011001320 A1 [0002]
• DE 102010026253 A1 [0002]
• DE 102011005977 A1 [0002]
• DE 202009009143 U1 [0002]
• DE 102004037206 A1 [0002]
• DE 102012001117 A1 [0002]

Cited non-patent literature

• EN AW7020 or 7075 [0017]
• ENAW 7020 [0021]
• EN AW 7020 or 7075 [0021]
• En AW 7020 [0023]

Claims (19)

Process for the production of components or products preferably of metal with doppler / double doublers and / or amplifiers or the like, preferably of the base material metal such as metal products, metal blanks, in particular metal sheet / metal sheet composites / sheet metal blanks / forgings / castings, where the main body is used, for example, as a component, the components or product, products with at least one Doppler / Doppeldoppler and / or amplifiers for component refinement such as increase in strength and / or increase in rigidity and / or / connectivity, etc. are provided, wherein - at least one partner may already in its final form manufactured product / body or preferably at least in some areas for the production / forming provided preliminary product / basic body preferably a metal part / metal product or metal parts, boards, PCB assemblies or blanks of, for example, metal as a base partner (Grun body) and at least one Doppler / Doppeldoppler or amplifier, etc. preferably made of metal of the same or different thickness, the partner either in the overall width and / or length or only partially overlapping, positioned and / or fixed / soldered, etc. is in such a way that the thickness of the partner is increased by the Doppler / double Doppler or amplifier, etc., and Doppler makes a strength-increasing and / or stiffness-increasing contribution depending on the combination of the material properties and / or integrates additional functions / component properties, at least one positioned in this way and / or fixed Doppler / Doppeldoppler or amplifier, etc. connected to one or the partners at adjacent points or surfaces and / or fixed in a transportable manner, - the Gesamtrohbauteil thus formed optionally trimming and / or punched and / or forward or on - deformed or shaped either at least partially connected or advantageously at least partially hot or cold formed simultaneously in all connection regions, characterized in that - at least one base partner / base body at least one connection point to Doppler / Doppeldoppler or amplifier, etc. with a suitable for a positive connection "closure Or a connection structure (V-structure) is provided, in particular a perforation, suitable recesses, openings, ribs or the like structuring, or reverse V-structure arrangement for Doppler / amplifier or vice versa at least one Doppler / Doppeldoppler, amplifier, etc. with a V-structure / closure / complementary V-structure for the connection with at least one basic partner / product / body is provided, or the partners are using a positive-locking V-structure technology (for example, "Miniverclinchen") only after merging the partner at least partially with the FVS, - at least one Doppler / Doppeldoppler or amplifier, etc. preferably of metal in any geometry for the entire product / body such as board, board composite, blank or the like at the junction with its V-structure on the area of the base partner without V- Structure or without V-structure on the provided with V-structure / complementary V-structure region of the base partner at least on one side / merged or laid under the V-structured area / merged, or in the reverse arrangement V -Structured on the surface to be joined / merges, or FVS connected, - for body or base body consisting of at least two partners / composite partners advantageously provided for forming at least cold or at least partially heated state connected to the component / body advantageously simultaneously cold - or hot formed we d / be, wherein before forming or by forming at least one at least partial positive connection in the connecting region between at least one partner of the main body or the base body and at least one Doppler / Doppeldoppler or amplifier, etc. is generated and, for example form-fitting V-structure is generated , wherein already before the connecting step with the Doppler in finished molded components, the manufacturing step of the forming is omitted. A method according to claim 1, characterized in that the Doppler / Doppeldoppler or amplifier, etc. is provided at least in the connection area with a smooth surface or with a connection structure or at least partially complementary to the connection structure of the base partner connection structure. Method according to one of claims 1 or 2, characterized in that the prepared composite partners, Doppler / Doppeldoppler or amplifier, etc. from the same or similar base material for metals with similar melting temperature, especially in the case of a required curing or other required heat treatment of at least one composite partner and / / or Doppler / double Doppler or amplifier to each other positionally stapled, soldered or fixed, with base metals with significantly different melting either advantageous subgroups / board composites in combination with all possible Dopplervarianten from at least substantially similar base metals are formed with respect to the melting temperature and / or single blanks / individual blanks / Doppler / amplifier before or after heating brought together at least in the areas to be joined, wherein the heating for the compound can also be advantageously carried out in the combined state such as inductive and in the connection area / -en at least partially positively and advantageously also at least partially cohesively connected and for the cases of the compounds with blanks which are possibly either later / or directly transformed, wherein for the connection of at least one "Doppler / Doppeldopplers" etc. with an already at least substantially in final form product, the steps for the compound or the Forming of the "Doppler / Doppler range, etc." are not required omitted. Method according to one of claims 1 to 3, characterized in that consisting of the same base material product as well as the Doppler or amplifier or from merged boards / composite partners and / or stapled / fixed / soldered composite partners / partner groups formed with at least one arranged Doppler / amplifier Gesamtrohteil is optionally heated to austenitizing, suitable for curing and / or suitable for forming temperature. Method according to one of Claims 1 or 2, characterized in that at least one partner / Doppler / amplifier is austenitized or heat-treated and the different partners / Doppler / amplifiers are made of different base materials, in particular of metals with distinctly different melting temperatures or even partner compounds / basic body with Doppler / amplifiers are brought together only after the corresponding individual heating and advantageously V-structured / form-fitting V-structured connected and / or reshaped from the partners / partner associations / blanks / Dopplers / amplifiers formed Gesamtrohteil / overall component. Method according to one of claims 1 to 5, characterized in that the partner / partner network in the region of the connection point to the "Doppler", which is placed on a "Doppler" or amplifier / merged or positioned under the Doppler or amplifier to the area the arrangement of the "Doppler" or amplifier are cranked so that after the connection / forming on one side a flat surface is formed. Method according to one of claims 1 to 6, characterized in that a plurality of partners of the base body of different thickness and / or different material quality (alloying) and / or material type (base material) are connected to each other at the connection points in particular V-structured / positive locking V-structured and preferably simultaneously at least one partner of the body is connected to at least one Doppler or amplifier etc. Method according to one of claims 1 to 7, characterized in that H-partners such as partners made of steel with L-partners such as Dopplers or amplifiers of preferably aluminum / aluminum alloys are joined together at the connection points. Method according to one of claims 1 to 8, characterized in that at least partners / Dopplern / reinforcers, preferably made of steel at least, if they are intended for hot working / hardening, provided with an oxide-inhibiting coating, preferably an AlSi coating, as well as a desired Diffusion at least for at least one process step in the heated state in an oxide-forming environment in the regions to be joined are preferably additionally provided with a solder and / or a brass / bronze alloy coating. Method according to one of claims 1 to 9, characterized in that an H-partner such as a high-strength, for example made of steel partner / Doppler / amplifier or board composite or blank with at least one arranged "Doppler / amplifier" is provided with an AlSi coating and in the region of the point of connection to other base material compounds with V-structure preferably metallic-V-structure is provided and an L-partner such as consisting of aluminum or its alloys partner / blank / Doppler / amplifier or partner network with at least one "Doppler / amplifier "Are made available from these alloys and combined after a separate at least in the connection areas required heating and connected / transformed to the overall product, Gesamtplatine / blank with the arranged Doppler, which is the cold and / or hot forming is supplied. Method according to one of claims 1 to 10, characterized in that, for example, a cold-formable, for example made of steel existing partner / Doppler / amplifier or partner network with at least one arranged Doppler / amplifier, etc. in the region of a connection point to the partner / Doppler / amplifier or partner network another base metal compound is provided with V-structure and at least one example of aluminum or its alloys existing L-partner / Doppler / amplifier or partner network with at least one Doppler / amplifier of these Alloys are made available and are advantageously combined after a separate required heating at least in the areas to be joined and connected to the overall product either or form-fitting V-structured connected and the hot or cold forming is fed / or the cold / Hot forming are fed directly and are connected directly during the forming at the connection points. Method according to one of claims 1 to 11, characterized in that the partners / Doppler / amplifiers in the region of the connection point by / during cold or hot forming at least partially positively and advantageously also at least partially cohesively connected to each other. Method according to one of claims 1 to 12, characterized in that the partners / Doppler / amplifiers in the region of the connection point in the combination of partners / Dopplers / amplifiers of different base alloy or strongly curved components in the connection area by a completed before forming the to be connected points at least partially positively and advantageously also at least partially cohesively connected. Method according to one of claims 1 to 13, characterized in that the individual partners / Doppler / amplifiers and / or positionally stapled / fixed / soldered or connected partners / Doppler / amplifiers shaping trimmed / perforated / preformed / molded or the like edited or form-locking-V -structured and then or simultaneously cold or hot formed.  A component or product consisting at least of a partner / one-piece body or blank such as already at least largely finished manufactured component or still standing for a forming / -e blank / -e such as forging blank, cast blank, sheet metal or the like metal part or plastic part, which with at least one Doppler or amplifier is preferably made of metal of any geometry and arranged at least one side or preferably also consists of a composite of several partners composite, which is advantageously formed from each connected to each other directly adjacent connection points partners / can be, advantageously the junction / At least a first partner with connection structure (V-structure) is provided and the connection point of a following partner, the V-structure is inter-connected and / or across the V-structured area, at least one of the composite partners is formed a connection with at least one Doppler / amplifier, in particular produced by the method according to one of claims 1 to 14. Component according to claim 15, characterized in that the / the partner / body / Doppler / amplifier in the region of the V-structure are at least partially positively connected to each other / is. A component according to claim 15 or 16, characterized in that a connection region of the partner provided with or without V-structure or with complementary V-structure is cranked by the thickness of the "Doppler or amplifier", so that the component on one side is a continuous one forms a flat surface. Component according to one of claims 15 to 17, characterized in that at least one component / partner / Doppler / amplifier preferably made of AlSi-coated heat-transformable steel and at least one further Doppler / amplifier / partner / component consists of a light metal alloy, in particular aluminum or aluminum alloy. Component according to one of Claims 15 to 18, characterized in that the components / partners / Doppler / amplifiers in the connection region are connected to each other at least partially by material engagement.

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