EP2586881B1 - Procédé de fabrication d'une pièce moulée en acier très résistant ou extrêmement résistant - Google Patents

Procédé de fabrication d'une pièce moulée en acier très résistant ou extrêmement résistant Download PDF

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Publication number
EP2586881B1
EP2586881B1 EP11009503.1A EP11009503A EP2586881B1 EP 2586881 B1 EP2586881 B1 EP 2586881B1 EP 11009503 A EP11009503 A EP 11009503A EP 2586881 B1 EP2586881 B1 EP 2586881B1
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EP
European Patent Office
Prior art keywords
heated
producing
plate
zones
forming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11009503.1A
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German (de)
English (en)
Other versions
EP2586881A3 (fr
EP2586881A2 (fr
Inventor
Gerhard Heuel
Winfried Freitag
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEDIA Gebrueder Dingerkus GmbH
Original Assignee
GEDIA Gebrueder Dingerkus GmbH
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Publication of EP2586881A2 publication Critical patent/EP2586881A2/fr
Publication of EP2586881A3 publication Critical patent/EP2586881A3/fr
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Classifications

    • 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.
  • From the EP 2 111 937 A1 is a method for producing thickness-varying sheet metal blanks for the manufacture of components for motor vehicles specified.
  • a sheet metal blank with variable thickness is prefabricated as the starting workpiece, which is then partially reworked, in particular re-stamped, so that the thickness of the sheet metal blank, which already has a variable thickness, is locally changed. It also states that it is also possible to emboss the board, which has been heated for press-hardening, by a quick blow.
  • a method for producing a shaped component made of sheet metal wherein a separated from a sheet with respect to the thickness graded blank for a subsequent press hardening is heated in sections to different final temperature.
  • the blank is heated after separation from the sheet and graded by hot rolling or hot pressing in its thickness. Subsequently, it is conveyed through a heating element field and heated in sections transversely to the conveying direction to different final temperatures.
  • a method for producing a metal component in which the starting material is embossed and is further processed after the embossing into a component which has at least partially embossed regions, wherein the starting material is heat embossed. After embossing, the starting material can be warm-removed and / or press-hardened.
  • the present invention has the object 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 provided with an aluminum-silicon coating or a zinc-nickel coating before the forming process.
  • 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 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 is formed. This also increases the load capacity.

Landscapes

  • 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)
  • Forging (AREA)
  • Heat Treatment Of Steel (AREA)
  • Body Structure For Vehicles (AREA)

Claims (2)

  1. Procédé de fabrication d'une pièce de formage en acier de préférence à résistance haute ou à résistance la plus haute, une platine (1) en acier durcissable étant chauffée à la température d'austénitisation, la platine (1) chauffée étant formée à chaud dans un outil de matriçage à chaud, et étant durcie dans l'outil ou après le procédé de formage par refroidissement rapide, de façon que la structure ferritique du matériau premier chauffé soit transformée en une structure martensitique, caractérisé en ce que pendant le procédé de formage la platine (1) est simultanément compressée, de façon que des parties ou zones (2, 3, 4) d'épaisseur différente soient produites.
  2. Procédé selon la revendication 1, caractérisé en ce que la platine (1) est pourvue, avant le procédé de formage, d'une couche d'aluminium-silicium ou d'une couche de zinc-nickel.
EP11009503.1A 2011-10-28 2011-12-01 Procédé de fabrication d'une pièce moulée en acier très résistant ou extrêmement résistant Active EP2586881B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011117265A DE102011117265A1 (de) 2011-10-28 2011-10-28 Verfahren zur Herstellung eines Formteiles aus hochfestem oder höchstfestem Stahl

Publications (3)

Publication Number Publication Date
EP2586881A2 EP2586881A2 (fr) 2013-05-01
EP2586881A3 EP2586881A3 (fr) 2017-05-10
EP2586881B1 true EP2586881B1 (fr) 2019-02-06

Family

ID=45318763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11009503.1A Active EP2586881B1 (fr) 2011-10-28 2011-12-01 Procédé de fabrication d'une pièce moulée en acier très résistant ou extrêmement résistant

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EP (1) EP2586881B1 (fr)
DE (1) DE102011117265A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013014814A1 (de) 2013-09-05 2015-03-05 Technische Universität Bergakademie Freiberg Verfahren zur Herstellung eines hochfesten bzw. höchstfesten Formteils aus härtbarem Stahl
MX370243B (es) * 2016-05-18 2019-12-04 Nippon Steel Corp Star Metodo de produccion de producto formado en prensa y linea de produccion de productos formados en prensa.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007030388A1 (de) * 2007-06-29 2008-02-21 Daimler Ag Verfahren und Vorrichtung zur Herstellung eines gehärteten Blechbauteils sowie ein gehärtetes Blechbauteil
DE102008020473A1 (de) * 2008-04-23 2009-10-29 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung von in der Dicke variierenden Blechplatinen
DE102009025821B4 (de) * 2009-05-18 2011-03-31 Thyssenkrupp Steel Europe Ag Verfahren zur Herstellung eines Metallbauteils
AT509597B1 (de) * 2010-06-30 2011-10-15 Ebner Ind Ofenbau Verfahren und vorrichtung zum herstellen eines formbauteils

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2586881A3 (fr) 2017-05-10
DE102011117265A1 (de) 2013-05-02
EP2586881A2 (fr) 2013-05-01

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