EP1266972A1 - 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
EP1266972A1
EP1266972A1 EP02012153A EP02012153A EP1266972A1 EP 1266972 A1 EP1266972 A1 EP 1266972A1 EP 02012153 A EP02012153 A EP 02012153A EP 02012153 A EP02012153 A EP 02012153A EP 1266972 A1 EP1266972 A1 EP 1266972A1
Authority
EP
European Patent Office
Prior art keywords
bead
sheet metal
metal profile
board
collar
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.)
Granted
Application number
EP02012153A
Other languages
German (de)
English (en)
Other versions
EP1266972B1 (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 board, the board also preformed if necessary can be.
  • DE 24 52 486 A1 counts a method for producing a hardened one Sheet profile from a board in a press hardening process for State of the art in which a circuit board made of hardenable steel heated to hardening temperature, then hot formed in a press tool and then cured while the sheet profile in the press tool remains. Since the sheet profile during the hardening process cooling is clamped in the press tool, receives to get a product with good dimensional accuracy.
  • the hot forming and hardening in the press tool has due to the by combining the forming and tempering process in one tool rational way of working generally benefits.
  • WO 99/07492 provides for the above-described press hardening process to modify and the edge areas in the press tool bend from prefabricated holes so that collars are formed.
  • the holes are bent in the press tool before hardening.
  • the openings in the sheet metal profile are intended as through holes for fastening screws serve. It is conceivable to have such holes for orientation of the sheet profile in subsequent manufacturing operations.
  • Such openings with a collar are also referred to in technical terms as swings.
  • swings In practice, especially in automotive engineering, also applied to drilling or breakthroughs in automotive components, for example to reinforce cross members. These passages are supposed to avoid that the components in these areas prematurely in the event of a crash buckle and fail.
  • the object of the invention is based on the prior art based on a rational process for the production of hardened sheet metal profiles to show with swipes.
  • this object is achieved in a method according to claim 1.
  • the board has pull-throughs with protruding collars and at least one in Ribs flared in the direction of the collar.
  • Making the Draws can be done in one go or on pre-made holes. Contemporaneous or the bead or the beads are produced with a time delay.
  • the pull-throughs and the beads are preferably produced on the train the circuit board trimming.
  • the board prepared in this way can then be opened a conveyor lying in a heat treatment plant and be warmed there. After heating, the board is in one Press tool to the sheet profile hot-formed and cooled, whereby hardening occurs.
  • the passages can be used as reference points for the orientation of the sheet metal profile in subsequent manufacturing operations or to stiffen the Serve sheet metal profile or as mounting holes.
  • a blank or semi-finished product made of steel is preferably used, which is expressed in percent by weight of carbon (C) 0.19 up 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 as well Phosphate (P) in a proportion up to max. 0.025, sulfur (S) max. 0,015, Chrome (Cr) max. 0.35 and molybdenum (Mo) max. 0.35, with the rest iron (Fe) is inclusive of melting-related impurities.
  • the blank with beads and beads is heated in the heat treatment system to the hardening temperature, that is, to a temperature above Ac 3 , where the steel is in the austenitic state. As a rule, this temperature is between 775 ° C and 1000 ° C. Then the forming process takes place in the press tool, whereupon the hardening begins by cooling. This results in a fine-grained martensitic or bainitic material structure.
  • the sheet profile is clamped in the press tool during the hardening process.
  • the cooling performed here can be carried out directly or indirectly. In direct cooling, the sheet profile is brought into direct contact with a coolant. With indirect cooling, the press tool or parts thereof are cooled.
  • a bead is deeper than a collar a passage. This ensures that the board is reliably carried by the beads while lying on the conveyor.
  • the Passages or collars, however, are free at a distance from the funding.
  • the beads are designed groove-like and in the conveying direction oriented. This measure contributes to a reliable transport of the boards through the heat treatment plant.
  • the board gets stuck on the conveyor, for example between the oven rollers, is avoided.
  • the groove-like beads ensure a defined contact surface the funding.
  • the board is stiffened overall, so that it also only slight deflections of the board in the heat treatment system comes during transportation and heating.
  • the beads in the press tool can expediently leveled again before the cooling stage and thus removed be (claim 4).
  • the beads provided according to the invention in the board Due to the beads provided according to the invention in the board, the Preserve stackability of the boards. A tilting or rocking of the stack of boards is reduced or reliably prevented depending on the design of the beads.
  • the beads ensure that the Passages during transport on the conveyor through the heat treatment system not be damaged or a circuit board is attached to the conveyor remains. As mentioned earlier, the board is stiffened, so it's only going to a small deflection in the heat treatment plant during the Transport is coming.
  • FIGS 1 and 2 do not show a circuit board 1 when passing through one Heat treatment plant in the form of an oven 2, illustrated in more detail.
  • the board 1 is in this case on a conveyor formed from oven rollers 3 4 worn.
  • the circuit board 1 points downward from its plane in the image plane open passages 5 with circumferential collar 6. These are when cutting the board manufactured, as well as two covering almost the entire Length of the board 1 extending groove-like beads 7.
  • the beads 7 run parallel to the longitudinal direction of the rectangular board 1 and are in Direction of conveyance (arrow F) oriented - i.e. perpendicular to the longitudinal axis of the Oven rolls 3. It is clear from FIG. 2 that the beads 7 are deeper than that Collar 6 of the passages 5 are formed.
  • the passages 5 are consequently with ground clearance to the oven rollers 3.
  • the board 1 is from the with the Oven rollers 3 beads 7 coming into contact through oven 2 transported.
  • the beads 7 cause stiffening the circuit board 1 so that it can be used both in handling and during intermediate storage is easier to use. As a result of the stiffening, it also occurs in the oven 2 only less deflection during transport.
  • the circuit board 1 is heated to a temperature of approximately 970 ° C and then hot formed into a sheet metal profile in a press tool and then hardened.
  • the sheet profile is hardened in the press tool clamped.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (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)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Press Drives And Press Lines (AREA)
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 true EP1266972A1 (fr) 2002-12-18
EP1266972B1 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)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1300475A2 (fr) * 2001-10-05 2003-04-09 Benteler Automobiltechnik GmbH & Co. KG Procédé pour la fabrication d'un profilé de tôle durcie
DE10307184B3 (de) * 2003-02-20 2004-04-08 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines gehärteten Strukturbauteils für den Fahrzeugbau
EP2062664A1 (fr) * 2007-10-23 2009-05-27 Benteler Automobiltechnik GmbH & Co. KG Procédé de fabrication d'un profil en tôle durci
DE102008035388A1 (de) * 2008-07-29 2010-02-11 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines Kraftfahrzeug-Panzerungsbauteils
EP2457673A1 (fr) * 2010-11-26 2012-05-30 Salzgitter Flachstahl GmbH Procédé de fabrication de composants par formage à chaud de flans

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Citations (4)

* 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
DE2452486A1 (de) * 1973-11-06 1975-05-07 Norrbottens Jaernverk Ab Verfahren zur herstellung eines werkstueckes aus gehaertetem stahl
WO1999007492A1 (fr) * 1997-08-07 1999-02-18 Ssab Hardtech Ab Procede de fabrication d'un produit en tole trempee
DE19743802A1 (de) * 1996-10-07 1999-03-11 Benteler Werke Ag Verfahren zur Herstellung eines metallischen Formbauteils

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137922A (en) * 1960-02-01 1964-06-23 Leon B Schumacher Method of making a rigid structural member
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

Patent Citations (4)

* 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
DE2452486A1 (de) * 1973-11-06 1975-05-07 Norrbottens Jaernverk Ab Verfahren zur herstellung eines werkstueckes aus gehaertetem stahl
DE19743802A1 (de) * 1996-10-07 1999-03-11 Benteler Werke Ag Verfahren zur Herstellung eines metallischen Formbauteils
WO1999007492A1 (fr) * 1997-08-07 1999-02-18 Ssab Hardtech Ab Procede de fabrication d'un produit en tole trempee

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1300475A2 (fr) * 2001-10-05 2003-04-09 Benteler Automobiltechnik GmbH & Co. KG Procédé pour la fabrication d'un profilé de tôle durcie
EP1300475A3 (fr) * 2001-10-05 2004-10-06 Benteler Automobiltechnik GmbH & Co. KG Procédé pour la fabrication d'un profilé de tôle durcie
DE10307184B3 (de) * 2003-02-20 2004-04-08 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines gehärteten Strukturbauteils für den Fahrzeugbau
EP2062664A1 (fr) * 2007-10-23 2009-05-27 Benteler Automobiltechnik GmbH & Co. KG Procédé de fabrication d'un profil en tôle durci
US8756969B2 (en) 2007-10-23 2014-06-24 Benteler Automobiltechnik Gmbh Method of making a hardened sheet metal part
DE102008035388A1 (de) * 2008-07-29 2010-02-11 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines Kraftfahrzeug-Panzerungsbauteils
DE102008035388B4 (de) * 2008-07-29 2011-01-20 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines Kraftfahrzeug-Panzerungsbauteils
EP2457673A1 (fr) * 2010-11-26 2012-05-30 Salzgitter Flachstahl GmbH Procédé de fabrication de composants par formage à chaud de flans

Also Published As

Publication number Publication date
DE10128200A1 (de) 2002-12-19
DE50207361D1 (de) 2006-08-10
EP1266972B1 (fr) 2006-06-28
DE10128200B4 (de) 2004-07-22
US6949151B2 (en) 2005-09-27
US20030000606A1 (en) 2003-01-02

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