EP2586881A2 - Method for producing a moulded part from high-strength steel - Google Patents

Method for producing a moulded part from high-strength steel Download PDF

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Publication number
EP2586881A2
EP2586881A2 EP11009503.1A EP11009503A EP2586881A2 EP 2586881 A2 EP2586881 A2 EP 2586881A2 EP 11009503 A EP11009503 A EP 11009503A EP 2586881 A2 EP2586881 A2 EP 2586881A2
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EP
European Patent Office
Prior art keywords
heated
hot
circuit board
zones
tool
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Granted
Application number
EP11009503.1A
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German (de)
French (fr)
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EP2586881B1 (en
EP2586881A3 (en
Inventor
Gerhard Heuel
Winfried Freitag
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GEDIA Gebrueder Dingerkus GmbH
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GEDIA Gebrueder Dingerkus GmbH
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/673—Quenching devices for die quenching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/065—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes starting from a specific blank, e.g. tailored blank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/208—Deep-drawing by heating the blank or deep-drawing associated with heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
    • B21D35/006—Blanks having varying thickness, e.g. tailored blanks
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2221/00—Treating localised areas of an article

Definitions

  • the invention relates to a method for producing a molded part of preferably high-strength or high-strength steel, wherein a hardenable steel board is heated to Austenitmaschinestemperatur, the heated board is hot-formed in a forming tool and cured in the tool or subsequent to the molding process by rapid cooling, so that the ferritic structure of the heated starting material is converted into a martensitic structure.
  • the invention relates to a hot-formed component made of high-strength or ultra-high-strength steel.
  • the present invention seeks to provide a method for producing a molded part of the type mentioned, are formed in the zones of different load capacity on the finished molded part and this is inexpensive and easy to produce in only one tool .
  • the invention proposes to solve the problem that during the forming, the board is pressed simultaneously, so that sections or zones are produced with different material thickness.
  • the board is heated to Austenitmaschinestemperatur before the forming process, then the board is pressed so that sections or zones with different Material thickness are generated, then the thus pretreated board is heated again to Austenitmaschinestemperatur and subsequently formed in a forming tool and then cured.
  • the forming and the material compression in zones of different material thickness is performed within a tool in two successive steps.
  • the board is provided with an aluminum-silicon coating or a zinc-nickel coating before the forming process.
  • the invention relates to a hot-formed component made of high-strength or ultrahigh-strength steel, which is characterized in that the component has hot-pressed zones of different thickness.
  • the component is a motor vehicle component such as a B-pillar, a side impact beam or a sill.
  • a B-pillar, a side impact beam or a sill are motor vehicle parts that have different load-bearing zones, for example, to absorb crash-related forces or targeted crash-induced deformation for the purpose of power.
  • FIG. 1 and 1A a hot formed part 1 of high strength steel is partially shown.
  • the component 1 has hot-pressed zones 2, 3, 4 of different thickness and is U-shaped in cross-section as in FIG Figure 1A is shown.
  • the component is made of a plate 1 'made of hardenable steel, as in FIG. 2 in plan view and in FIG. 3 shown in section, which is heated to Austenitmaschinestemperatur, then formed in a forming tool and cured in the tool by rapid cooling, so that ferritic microstructure of the heated starting material is converted into martensitic structure.
  • the board 1 ' is simultaneously pressed during or before the forming of the board 1', so that zones 2, 3, 4 of different material thickness are produced.
  • a manufactured according to such a method component has through the zones 2,3,4 different thickness areas with different load characteristics, so that according to the desired load, a corresponding component can be formed.
  • FIG. 2 is a corresponding board 1 'after the compression for forming the zones 2,3,4, but shown before the forming of the finished molded part.
  • this board 1 ' is shown in longitudinal section AA.
  • Such a component can optionally be formed with a tool in only one operation, curable and compressible, so that only low production costs.
  • the rolling fibers are not destroyed, so that a homogeneous transition of the zones of different material thickness and hardness arises. This also increases the load capacity.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Heat Treatment Of Articles (AREA)
  • Body Structure For Vehicles (AREA)
  • Forging (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The method comprises heating a circuit board (1) made of hardenable steel to an austenitizing temperature before a forming process, where the heated circuit board is hot-formed in a material-deforming tool and is hardened in the tool or subsequent to a molding process by a rapid cooling so that a ferritic structure of a heated starting material is converted into a martensitic structure, and pressing the circuit board during a transformation so that portions or zones (2, 3, 4) are produced with different material thicknesses. The pretreated circuit board is again heated to the temperature. The method comprises heating a circuit board (1) made of hardenable steel to an austenitizing temperature, before a forming process, where the heated circuit board is hot-formed in a material-deforming tool and is hardened in the tool or subsequent to a molding process by a rapid cooling so that a ferritic structure of a heated starting material is converted into a martensitic structure, and pressing the circuit board during a transformation so that portions or zones (2, 3, 4) are produced with different material thicknesses. The pretreated circuit board is again heated to the austenitizing temperature and is subsequently hot formed in the forming tool. The circuit board is provided, before the forming process, with an aluminum-silicon-coating or a zinc-nickel-coating. An independent claim is included for a hot-formed component made of high-strength or high-fixed steel.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines Formteiles aus vorzugsweise hochfestem oder höchstfestem Stahl, wobei eine Platine aus härtbarem Stahl auf Austenitisierungstemperatur erwärmt wird, die erwärmte Platine in einem Umformwerkzeug warmumgeformt und im Werkzeug oder anschließend an den Formgebungsvorgang durch schnelle Abkühlung gehärtet wird, so dass das ferritische Gefüge des erwärmten Ausgangsmaterials in martensitisches Gefüge umgewandelt wird.The invention relates to a method for producing a molded part of preferably high-strength or high-strength steel, wherein a hardenable steel board is heated to Austenitisierungstemperatur, the heated board is hot-formed in a forming tool and cured in the tool or subsequent to the molding process by rapid cooling, so that the ferritic structure of the heated starting material is converted into a martensitic structure.

Ferner betrifft die Erfindung ein warmumgeformtes Bauteil aus hochfestem oder höchstfestem Stahl.Furthermore, the invention relates to a hot-formed component made of high-strength or ultra-high-strength steel.

Im Stand der Technik ist es bekannt, insbesondere in der Herstellung von Kraftfahrzeug-Zulieferteilen mittels Formhärten, welches auch als Presshärten bezeichnet wird, Kraftfahrzeugteile, die hohen Belastungen standhalten, herzustellen. Beim Formhärten wird in einem ersten Arbeitsschritt eine Platine aus härtbarem Stahl auf Austenitisierungstemperatur von etwa 920 ° bis 950 ° erwärmt und anschließend während der Formgebung derart abgekühlt, dass sich das Gefüge aus einem ferritischen Ausgangsgefüge in ein martensitisches Gefüge umwandelt.In the prior art it is known, in particular in the manufacture of automotive parts by means of form hardening, which is also known as press hardening, motor vehicle parts, the high loads withstand, manufacture. In the case of mold hardening, in a first working step a hardenable steel board is heated to an austenitizing temperature of about 920 ° to 950 ° and then cooled during shaping in such a way that the structure is transformed from a ferritic starting structure into a martensitic structure.

Es wird also in einem Schritt umgeformt und im gleichen Werkzeug gleichzeitig oder zeitnah gehärtet.It is thus formed in one step and cured in the same tool simultaneously or in a timely manner.

Häufig werden im Fahrzeugbau Platinen aus einem hochfesten oder höchstfesten Stahl verwendet, die mit einer Aluminium-Silizium-Beschichtung oder einer Nickel-Zink-Beschichtung versehen sind.Frequently used in vehicle construction boards made of a high-strength or high-strength steel, which are provided with an aluminum-silicon coating or a nickel-zinc coating.

Die Anforderung an spezielle Teile am Fahrzeug, nämlich Bereiche mit unterschiedlichen Belastungseigenschaften zur Verfügung zu stellen, kann nicht allein durch das gezielte Härten einzelner Bereiche realisiert werden.The requirement for special parts on the vehicle, namely to provide areas with different load characteristics, can not be realized solely by targeted hardening of individual areas.

Aufgrund des eingangs genannten Standes der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, ein Verfahren zur Herstellung eines Formteils der eingangs genannten Art zu schaffen, bei dem Zonen unterschiedlicher Belastbarkeit am fertigen Formteil ausgebildet werden und das dabei kostengünstig und einfach in nur einem Werkzeug herstellbar ist. Verfahrensmäßig schlägt die Erfindung zur Lösung der Aufgabe vor, dass während der Umformung die Platine gleichzeitig verpresst wird, so dass Abschnitte oder Zonen mit unterschiedlicher Materialdicke erzeugt werden.Due to the above-mentioned prior art, the present invention seeks to provide a method for producing a molded part of the type mentioned, are formed in the zones of different load capacity on the finished molded part and this is inexpensive and easy to produce in only one tool , In terms of method, the invention proposes to solve the problem that during the forming, the board is pressed simultaneously, so that sections or zones are produced with different material thickness.

Durch die gleichzeitige Verpressung zur Erzeugung verschieden dicker Zonen oder Abschnitte während der Umformung der Platine werden ohne großen Mehraufwand Zonen oder Abschnitte mit zueinander unterschiedlicher Belastbarkeit erzeugt.Due to the simultaneous compression to produce different thick zones or sections during the forming of the board zones or sections are generated with mutually different load capacity without much additional effort.

Hierdurch ist es ermöglicht, Formteile mit genau definierten unterschiedlichen Beanspruchungsbereichen herzustellen, die dabei kostengünstig und einfach in nur einem Arbeitsgang im gleichen Werkzeug umformbar und pressbar sind. Ein weiterer großer Vorteil einer auf diese Art und Weise umgeformten Platine ist, dass zwischen den Zonen verschiedener Dicke ein homogener Übergang von Zone zu Zone erfolgt. Dies ist beispielsweise bei spanabhebend bearbeiteten Werkstücken zur Erzeugung unterschiedlicher Materialdicke nicht möglich. Insbesondere ist die Walzfaser nicht gestört, so dass das entstehende Formteil besonders hoch belastbar ist, da keine Bruchzonen oder Kerbbereiche bei der Umformung und Verpressung entstehen.This makes it possible to produce molded parts with precisely defined different stress areas, which are cost-effective and easy in only one operation in the same tool can be deformed and pressed. Another great advantage of a board formed in this way is that there is a homogeneous zone-to-zone transition between zones of different thicknesses. This is not possible, for example, in the case of machined workpieces for producing different material thicknesses. In particular, the rolling fiber is not disturbed, so that the resulting molded part is particularly high load, since no fracture zones or notch areas arise during the forming and compression.

Alternativ kann vorgesehen sein, dass die Platine vor dem Umformvorgang auf Austenitisierungstemperatur erwärmt wird, anschließend die Platine verpresst wird, so dass Abschnitte oder Zonen mit unterschiedlicher Materialdicke erzeugt werden, dann die so vorbehandelte Platine nochmals auf Austenitisierungstemperatur erwärmt wird und nachfolgend in einem Umformwerkzeug umgeformt und anschließend gehärtet wird.Alternatively it can be provided that the board is heated to Austenitisierungstemperatur before the forming process, then the board is pressed so that sections or zones with different Material thickness are generated, then the thus pretreated board is heated again to Austenitisierungstemperatur and subsequently formed in a forming tool and then cured.

Hierbei wird das Umformen und das Materialverpressen in Zonen verschiedener Materialdicke innerhalb eines Werkzeugs in zwei aufeinanderfolgenden Schritten vollzogen.Here, the forming and the material compression in zones of different material thickness is performed within a tool in two successive steps.

Weiter kann besonders bevorzugt vorgesehen sein, dass die Platine vor dem Umformvorgang mit einer Aluminium-Silizium-Beschichtung oder einer Zink-Nickel-Beschichtung versehen wird.Furthermore, it can be particularly preferably provided that the board is provided with an aluminum-silicon coating or a zinc-nickel coating before the forming process.

Insbesondere bei mit Aluminium-Silizium beschichteten Platinen muss eine genaue Erwärmung auf Austenitisierungstemperatur erfolgen, ohne dabei über die Austenitisierungstemperatur hinaus zu erwärmen, um die Beschichtung nicht zu beschädigen. Ferner darf eine derart beschichtete Platine nur eine gewisse Zeitdauer auf Austenitisierungstemperatur gehalten werden, um die Beschichtung nicht zu beschädigen. Dies ist durch das gleichzeitige oder zeitnahe Umformen, Verpressen und Härten ermöglicht.In particular, with aluminum-silicon coated boards, accurate heating to austenitizing temperature must be achieved without heating beyond the austenitizing temperature to avoid damaging the coating. Furthermore, such a board should be kept at Austenitisierungstemperatur only for a certain period of time, so as not to damage the coating. This is made possible by the simultaneous or timely forming, pressing and hardening.

Derartige Verfahren zur Warmumformung stellen einen erheblichen Kostenvorteil gegenüber herkömmlichen Verfahren dar.Such methods for hot forming represent a significant cost advantage over conventional methods.

Zudem betrifft die Erfindung ein warmumgeformtes Bauteil aus hochfestem oder höchstfestem Stahl, welches sich dadurch auszeichnet, dass das Bauteil warmverpresste Zonen unterschiedlicher Dicke aufweist.Moreover, the invention relates to a hot-formed component made of high-strength or ultrahigh-strength steel, which is characterized in that the component has hot-pressed zones of different thickness.

Dabei kann besonders bevorzugt vorgesehen sein, dass das Bauteil ein Kraftfahrzeugbauteil wie beispielsweise eine B-Säule, ein Seitenaufprallträger oder ein Schweller ist.It may be particularly preferably provided that the component is a motor vehicle component such as a B-pillar, a side impact beam or a sill.

Gerade im Kraftfahrzeugbau werden Teile mit verschieden belastbaren Zonen an verschiedenen Stellen eines Fahrzeugs benötigt. Beispielsweise eine B―Säule, ein Seitenaufprallträger oder ein Schweller stellen Kraftfahrzeugteile dar, die verschieden belastbare Zonen beispielsweise zur Aufnahme von crashbedingten Kräften oder zur gezielten crashbedingten Umformung zum Zwecke der Kraftaufnahme aufweisen.Especially in the automotive industry parts are required with different loadable zones at different points of a vehicle. For example, a B-pillar, a side impact beam or a sill are motor vehicle parts that have different load-bearing zones, for example, to absorb crash-related forces or targeted crash-induced deformation for the purpose of power.

Ein Ausführungsbeispiel der Erfindung ist in den Figuren dargestellt und im Folgenden näher beschrieben.An embodiment of the invention is illustrated in the figures and described in more detail below.

Es zeigt:

Figur 1
ein erfindungsgemäßes Warmumgeformtes Formteil in Draufsicht;
Figur 1 A
desgleichen in Stirnansicht;
Figur 2
eine Variante in Draufsicht;
Figur 3
die Variante im Schnitt A-A der Figur 2 gesehen.
It shows:
FIG. 1
a hot-formed molded part according to the invention in plan view;
Figure 1 A
likewise in front view;
FIG. 2
a variant in plan view;
FIG. 3
the variant in section AA the FIG. 2 seen.

In den Figuren 1 und 1A ist ein warmumgeformtes Bauteil 1 aus hochfestem Stahl teilweise gezeigt. Das Bauteil 1 weist warm verpresste Zonen 2,3,4 unterschiedlicher Dicke auf und ist im Querschnitt U-förmig wie in Figur 1A gezeigt ist.In the Figures 1 and 1A a hot formed part 1 of high strength steel is partially shown. The component 1 has hot-pressed zones 2, 3, 4 of different thickness and is U-shaped in cross-section as in FIG Figure 1A is shown.

In den Figuren ist lediglich ein Teilabschnitt eines entsprechenden Bauteiles gezeigt. Das Bauteil wird aus einer Platine 1' aus härtbarem Stahl gefertigt, wie in Figur 2 in Draufsicht und in Figur 3 im Schnitt gezeigt, welche auf Austenitisierungstemperatur erwärmt wird, anschließend in einem Umformwerkzeug umgeformt und im Werkzeug durch schnelle Abkühlung gehärtet wird, so dass ferritisches Gefüge des erwärmten Ausgangsmaterials in martensitisches Gefüge umgewandelt wird. Erfindungsgemäß wird während oder vor der Umformung der Platine 1' gleichzeitig die Platine 1' verpresst, so dass Zonen 2,3,4 unterschiedlicher Materialdicke erzeugt werden. Ein nach einem derartigen Verfahren hergestelltes Bauteil weist durch die Zonen 2,3,4 unterschiedlicher Dicke Bereiche mit unterschiedlichen Belastungseigenschaften auf, so dass entsprechend der gewünschten Belastung ein entsprechendes Bauteil ausgebildet werden kann.In the figures, only a portion of a corresponding component is shown. The component is made of a plate 1 'made of hardenable steel, as in FIG. 2 in plan view and in FIG. 3 shown in section, which is heated to Austenitisierungstemperatur, then formed in a forming tool and cured in the tool by rapid cooling, so that ferritic microstructure of the heated starting material is converted into martensitic structure. According to the invention, the board 1 'is simultaneously pressed during or before the forming of the board 1', so that zones 2, 3, 4 of different material thickness are produced. A manufactured according to such a method component has through the zones 2,3,4 different thickness areas with different load characteristics, so that according to the desired load, a corresponding component can be formed.

In Figur 2 ist eine entsprechende Platine 1' nach der Verpressung zur Formung der Zonen 2,3,4, aber vor der Umformung zum fertigen Formteil gezeigt. In Figur 3 ist diese Platine 1' im Längsschnitt A-A gezeigt.In FIG. 2 is a corresponding board 1 'after the compression for forming the zones 2,3,4, but shown before the forming of the finished molded part. In FIG. 3 this board 1 'is shown in longitudinal section AA.

Ein derartiges Bauteil ist mit einem Werkzeug gegebenenfalls in nur einem Arbeitsgang umformbar, härtbar und verpressbar, so dass nur geringe Herstellungskosten entstehen. Zudem wird bei einem derartigen Bauteil während der Herstellung die Walzfasern nicht zerstört, so dass ein homogener Übergang der Zonen unterschiedlicher Materialdicke und Härte entsteht. Auch hierdurch wird die Belastbarkeit erhöht.Such a component can optionally be formed with a tool in only one operation, curable and compressible, so that only low production costs. In addition, in such a component during production, the rolling fibers are not destroyed, so that a homogeneous transition of the zones of different material thickness and hardness arises. This also increases the load capacity.

Die Erfindung ist nicht auf das Ausführungsbeispiel beschränkt, sondern im Rahmen der Offenbarung vielfach variabel.The invention is not limited to the embodiment, but in the context of the disclosure often variable.

Alle neuen, in der Beschreibung und/oder Zeichnung offenbarten Einzel- und Kombinationsmerkmale werden als erfindungswesentlich angesehen.All new, disclosed in the description and / or drawing single and combination features are considered essential to the invention.

Claims (5)

Verfahren zur Herstellung eines Formteiles aus vorzugsweise hochfestem oder höchstfestem Stahl, wobei eine Platine (1) aus härtbarem Stahl auf Austenitisierungstemperatur erwärmt wird, die erwärmte Platine (1) in einem Umformwerkzeug warmumgeformt und im Werkzeug oder anschließend an den Formgebungsvorgang durch schnelle Abkühlung gehärtet wird, so dass das ferritische Gefüge des erwärmten Ausgangsmaterials in martensitisches Gefüge umgewandelt wird, dadurch gekennzeichnet, dass während der Umformung die Platine (1) gleichzeitig verpresst wird, so dass Abschnitte oder Zonen (2,3,4) mit unterschiedlicher Materialdicke erzeugt werden.A method for producing a molded part of preferably high-strength or ultra-high-strength steel, wherein a hardenable steel blank (1) is heated to austenitizing temperature, the heated blank (1) is hot-worked in a forming tool and hardened in the tool or subsequent to the shaping operation by rapid cooling, so that the ferritic structure of the heated starting material is converted into a martensitic structure, characterized in that the board (1) is pressed simultaneously during the forming, so that sections or zones (2, 3, 4) having different material thickness are produced. Verfahren nach dem Oberbegriff des Anspruchs 1, dadurch gekennzeichnet, dass die Platine (1) vor dem Umformvorgang auf Austenitisierungstemperatur erwärmt wird, anschließend die Platine (1) verpresst wird, so dass Abschnitte oder Zonen (2,3,4) mit unterschiedlicher Materialdicke erzeugt werden, dann die so vorbehandelte Platine (1) nochmals auf Austenitisierungstemperatur erwärmt wird und nachfolgend in einem Umformwerkzeug warmumgeformt und anschließend gehärtet wird.Method according to the preamble of claim 1, characterized in that the blank (1) is heated to Austenitisierungstemperatur before the forming process, then the board (1) is pressed so that sections or zones (2,3,4) produced with different material thickness are then heated again to Austenitisierungstemperatur the pretreated board (1) and subsequently hot-formed in a forming tool and then cured. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Platine (1) vor dem Umformvorgang mit einer Aluminium-Silizium-Beschichtung oder einer Zink-Nickel-Beschichtung versehen wird.A method according to claim 1, characterized in that the board (1) before the forming process with an aluminum-silicon coating or a zinc-nickel coating is provided. Warmumgeformtes Bauteil aus hochfestem oder höchstfestem Stahl, dadurch gekennzeichnet, dass das Bauteil warmverpresste Zonen (2,3,4) unterschiedlicher Dicke aufweist.Hot-formed component of high-strength or high-strength steel, characterized in that the component has hot-pressed zones (2,3,4) of different thickness. Warmumgeformtes Bauteil nach Anspruch 4,
dadurch gekennzeichnet, dass das Bauteil ein Kraftfahrzeugbauteil wie beispielsweise eine B― Säule, ein Seitenaufprallträger oder ein Schweller ist.Hot-formed component according to claim 4,
characterized in that the component is a motor vehicle component such as a B-pillar, a side impact beam or a sill.
EP11009503.1A 2011-10-28 2011-12-01 Method for producing a moulded part from high-strength steel Active EP2586881B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011117265A DE102011117265A1 (en) 2011-10-28 2011-10-28 Process for producing a molded part from high-strength or ultra-high-strength steel

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Publication number Priority date Publication date Assignee Title
CN109153060A (en) * 2016-05-18 2019-01-04 新日铁住金株式会社 The manufacturing method and production line of compression moulding product

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DE102013014814A1 (en) 2013-09-05 2015-03-05 Technische Universität Bergakademie Freiberg Process for producing a high-strength or high-strength molded part made of hardenable steel

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DE102007030388A1 (en) * 2007-06-29 2008-02-21 Daimler Ag Method for the production of a hardened sheet metal component comprises deforming a flexible rolled metal strip with different thickness regions in a deforming tool and pressure hardening
DE102008020473A1 (en) * 2008-04-23 2009-10-29 Benteler Automobiltechnik Gmbh Method of producing thickness-varying sheet metal blanks
DE102009025821B4 (en) * 2009-05-18 2011-03-31 Thyssenkrupp Steel Europe Ag Method for producing a metal component
AT509597B1 (en) * 2010-06-30 2011-10-15 Ebner Ind Ofenbau METHOD AND DEVICE FOR PRODUCING A SHAPE COMPONENT

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109153060A (en) * 2016-05-18 2019-01-04 新日铁住金株式会社 The manufacturing method and production line of compression moulding product
US10744547B2 (en) * 2016-05-18 2020-08-18 Nippon Steel Corporation Method of producing press-formed product
CN109153060B (en) * 2016-05-18 2021-06-25 日本制铁株式会社 Method and production line for manufacturing press-molded article

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