EP1266972B1 - Procédé pour la fabrication d'un profilé de tôle durcie - Google Patents

Procédé pour la fabrication d'un profilé de tôle durcie Download PDF

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Publication number
EP1266972B1
EP1266972B1 EP02012153A EP02012153A EP1266972B1 EP 1266972 B1 EP1266972 B1 EP 1266972B1 EP 02012153 A EP02012153 A EP 02012153A EP 02012153 A EP02012153 A EP 02012153A EP 1266972 B1 EP1266972 B1 EP 1266972B1
Authority
EP
European Patent Office
Prior art keywords
sheet metal
board
metal profile
bead
press tool
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.)
Expired - Lifetime
Application number
EP02012153A
Other languages
German (de)
English (en)
Other versions
EP1266972A1 (fr
Inventor
Oliver MÜLLER
Wilhelm Dr. Arns
Peter Göer
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.)
Benteler Automobiltechnik GmbH
Original Assignee
Benteler Automobiltechnik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
Publication of EP1266972A1 publication Critical patent/EP1266972A1/fr
Application granted granted Critical
Publication of EP1266972B1 publication Critical patent/EP1266972B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • B21D19/088—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for flanging holes
    • 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
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
    • 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
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
    • 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
    • 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

Definitions

  • the invention relates to a method for producing a hardened sheet metal profile from a circuit board, wherein the board can also be preformed in case of need.
  • Hot working and tempering in the press tool generally has advantages due to the efficient operation of a tool through the combination of forming and tempering operation.
  • WO 99/07492 it is provided to modify the above-described press hardening process and to bend the edge-side areas of prefabricated holes in the press tool so that collars are formed.
  • the bending of the holes happens in the press tool before hardening.
  • the openings in the sheet profile should serve as feedthrough holes for mounting screws. It is conceivable to use such holes also for positional orientation of the sheet metal profile in subsequent manufacturing operations.
  • Such openings with collar are called technically-terminological as passages. They are also used in practice, especially in the automotive industry, to reinforce holes or breakthroughs in automotive components, such as cross members. These passages should prevent the components in these areas from prematurely buckling and failing in the event of a crash.
  • the invention is based on the prior art, the task of demonstrating a rational process for the production of hardened sheet metal profiles with passages.
  • the solution of this problem is according to the invention in a method according to claim 1.
  • the production of the passages can take place in one go or on prefabricated holes.
  • the bead or beads are produced.
  • the production of the passages and the beads takes place in the course of the blanking.
  • the thus prepared board can be transported lying on a conveyor in a heat treatment plant and heated there. After heating, the board is hot worked in a press tool to sheet metal profile and cooled, thereby curing sets.
  • the passages can serve as reference points for positional orientation of the sheet metal profile in subsequent manufacturing operations or for stiffening the sheet metal profile or as mounting holes.
  • a board or a semi-finished product made of a steel which in terms of weight percent consists of carbon (C) 0.19 to 0.25, silicon (Si) 0.15 to 0.50, manganese (Mn) 1, 10 to 1.40, titanium (Ti) 0.020 to 0.050, boron (B) 0.002 to 0.005, aluminum (Al) 0.02 to 0.06 and phosphate (P) in an amount up to max. 0.025, sulfur (S) max. 0.015, chromium (Cr) max. 0.35 and molybdenum (Mo) max. 0.35, the remainder being iron (Fe), including impurities due to melting.
  • the plate provided with passages and corrugations is heated in the heat treatment plant to hardening temperature, that is to a temperature above Ac 3 , where the steel is in an austenitic state. As a rule, this temperature is between 775 ° C and 1000 ° C.
  • the forming process takes place in the press tool, whereupon hardening begins by cooling.
  • a fine-grained martensitic or bainitic material structure arises.
  • the sheet profile is clamped during the curing process in the press tool.
  • the case made cooling can be carried out directly or indirectly. In direct cooling, the sheet metal profile is brought directly into contact with a coolant. In indirect cooling, the press tool or parts thereof is cooled.
  • a bead is formed deeper than a collar of a passage. This ensures that the board is reliably supported by the beads lying on the conveyor.
  • the passages or collar are at a distance from the funding free.
  • the beads are designed groove-like and oriented in the conveying direction. This measure contributes to a reliable transport of the boards through the heat treatment plant. A snagging of the board on the conveyor, for example between the furnace rollers, is avoided.
  • the groove-like beads ensure a defined contact surface on the conveyor.
  • the board is stiffened as a whole, so that it comes only to small deflections of the board in the heat treatment plant during transport and heating.
  • the beads can, if necessary, be leveled again before the cooling step and thus removed (claim 4).
  • the stacking capacity of the boards is maintained. Tilting or rocking of the board stack is reduced or reliably prevented depending on the formation of the beads.
  • the beads ensure, as already mentioned, that the passages are not damaged during transport on the conveyor by the heat treatment plant or a board stuck to the conveyor.
  • the board is stiffened, so that there is only a small deflection in the heat treatment plant during transport.
  • Figures 1 and 2 show a circuit board 1 when passing through a not further illustrated heat treatment plant in the form of a furnace 2.
  • the circuit board 1 is supported on a conveyor 4 formed from furnace rollers 3.
  • the board 1 has from its plane projecting in the image plane downwardly open passages 5 with circumferential collar 6. These have been produced at the blanking board, as well as two almost the entire length of the board 1 extending groove-like beads 7.
  • the beads 7 are parallel to the longitudinal direction of the rectangular board 1 and are oriented in the conveying direction (arrow F) - ie at right angles to the longitudinal axis of the Oven rolls 3.
  • the beads 7 are formed deeper than the collar 6 of the passages 5. Consequently, the passages 5 are at ground clearance to the furnace rollers 3.
  • the board 1 is carried by the beads 7 which come into contact with the furnace rollers 3 and transported through the furnace 2.
  • the board 1 is heated to a temperature of about 970 ° C and then hot-formed in a press tool for sheet metal profile and then cured. The hardening of the sheet profile is still clamped in the press tool.

Claims (4)

  1. Procédé pour la fabrication d'un profilé de tôle durcie à partir d'une platine éventuellement préformée, dans lequel tout d'abord à partir des zones planes de la platine (1) sont configurés des passages (5) avec des collerettes (6) faisant saillie ainsi qu'au moins une moulure (7) réalisée en direction de la collerette (6), la platine (1) alors munie des passages et moulure(s) étant ensuite réchauffée sur un moyen de manutention (4) dans une installation de traitement thermique (2), puis transformée à chaud en profilé de tôle dans un outil de presse et ensuite durcie.
  2. Procédé selon la revendication 1, dans lequel il est formé une moulure (7) plus profonde qu'une collerette (6).
  3. Procédé selon la revendication 1 ou 2, dans lequel la moulure (7) est configurée en forme de gorge et elle est orientée dans la direction de manutention (F).
  4. Procédé selon l'une des revendications 1 à 3, dans lequel la moulure (7) est aplanie dans l'outil de presse.
EP02012153A 2001-06-11 2002-06-01 Procédé pour la fabrication d'un profilé de tôle durcie Expired - Lifetime EP1266972B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10128200 2001-06-11
DE10128200A DE10128200B4 (de) 2001-06-11 2001-06-11 Verfahren zur Herstellung eines gehärteten Blechprofils

Publications (2)

Publication Number Publication Date
EP1266972A1 EP1266972A1 (fr) 2002-12-18
EP1266972B1 true EP1266972B1 (fr) 2006-06-28

Family

ID=7687860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02012153A Expired - Lifetime EP1266972B1 (fr) 2001-06-11 2002-06-01 Procédé pour la fabrication d'un profilé de tôle durcie

Country Status (3)

Country Link
US (1) US6949151B2 (fr)
EP (1) EP1266972B1 (fr)
DE (2) DE10128200B4 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10149221C1 (de) * 2001-10-05 2002-08-08 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines gehärteten Blechprofils
DE10307184B3 (de) * 2003-02-20 2004-04-08 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines gehärteten Strukturbauteils für den Fahrzeugbau
DE10341867B4 (de) * 2003-09-09 2012-03-08 Volkswagen Ag Verfahren und Vorrichtung zur Herstellung eines gehärteten Blechprofils
DE10360417B4 (de) * 2003-12-19 2013-11-21 Volkswagen Ag Verfahren zur Herstellung eines gehärteten Blechprofils
DE102004019693B4 (de) * 2004-04-20 2017-10-26 Volkswagen Ag Verfahren zum Herstellen eines gehärteten Blechprofils
DE102006027625B3 (de) 2006-06-13 2007-08-09 Benteler Automobiltechnik Gmbh Ofenanlage und Warmformlinie
DE102006040893B3 (de) * 2006-08-31 2008-01-10 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines Blechbauteils für Kraftfahrzeuge
DE102007050907A1 (de) * 2007-10-23 2009-04-30 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines gehärteten Blechprofils
DE102008035388B4 (de) * 2008-07-29 2011-01-20 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines Kraftfahrzeug-Panzerungsbauteils
DE102009056443A1 (de) * 2009-12-02 2011-06-09 Benteler Automobiltechnik Gmbh Crashbox und Verfahren zu deren Herstellung
DE102010004823B4 (de) * 2010-01-15 2013-05-16 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines metallischen Formbauteils für Kraftfahrzeugkomponenten
DE102010004908B4 (de) * 2010-01-19 2016-09-15 Audi Ag Gussbauteil
DE102010012831B4 (de) * 2010-03-25 2023-02-16 Benteler Automobiltechnik Gmbh Getriebetunnel
DE102011086813A1 (de) * 2011-11-22 2013-05-23 Ford Global Technologies, Llc Einstückiges Blechbauteil für ein Fahrzeug
DE102013105489B3 (de) * 2013-05-28 2014-07-31 Thyssenkrupp Steel Europe Ag Verfahren zum Warmumformen von dünnen Halbzeugen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE601644C (de) * 1932-11-29 1934-08-21 Aeg Verfahren und Vorrichtung zum Behandeln von Blechen
US3137922A (en) * 1960-02-01 1964-06-23 Leon B Schumacher Method of making a rigid structural member
SE435527B (sv) * 1973-11-06 1984-10-01 Plannja Ab Forfarande for framstellning av en detalj av herdat stal
DE3632123C2 (de) * 1986-09-22 1995-04-13 Trumpf Gmbh & Co Biegepresse
DE3740085A1 (de) * 1987-11-26 1989-06-08 Lanz Ind Technik Ag Gegen durchbiegung stabilisiertes material
DE3930162C1 (fr) * 1989-09-09 1991-01-31 Rittal-Werk Rudolf Loh Gmbh & Co Kg, 6348 Herborn, De
DE19743802C2 (de) * 1996-10-07 2000-09-14 Benteler Werke Ag Verfahren zur Herstellung eines metallischen Formbauteils
SE510056C2 (sv) * 1997-08-07 1999-04-12 Ssab Hardtech Ab Sätt att tillverka en härdad ståldetalj

Also Published As

Publication number Publication date
DE50207361D1 (de) 2006-08-10
DE10128200B4 (de) 2004-07-22
US20030000606A1 (en) 2003-01-02
DE10128200A1 (de) 2002-12-19
EP1266972A1 (fr) 2002-12-18
US6949151B2 (en) 2005-09-27

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