EP3585531A1 - Procédé pour la fabrication d'une pièce par mise en forme ultérieure d'un contour préformé - Google Patents

Procédé pour la fabrication d'une pièce par mise en forme ultérieure d'un contour préformé

Info

Publication number
EP3585531A1
EP3585531A1 EP18702238.9A EP18702238A EP3585531A1 EP 3585531 A1 EP3585531 A1 EP 3585531A1 EP 18702238 A EP18702238 A EP 18702238A EP 3585531 A1 EP3585531 A1 EP 3585531A1
Authority
EP
European Patent Office
Prior art keywords
temperature
subjected
forming
seconds
edge
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
EP18702238.9A
Other languages
German (de)
English (en)
Other versions
EP3585531B1 (fr
Inventor
Stefan MÜTZE
Matthias Schneider
Sebastian WESTHÄUSER
Ingwer Asmus Denks
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.)
Salzgitter Flachstahl GmbH
Original Assignee
Salzgitter Flachstahl 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 Salzgitter Flachstahl GmbH filed Critical Salzgitter Flachstahl GmbH
Publication of EP3585531A1 publication Critical patent/EP3585531A1/fr
Application granted granted Critical
Publication of EP3585531B1 publication Critical patent/EP3585531B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/16—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/10—Means for treating work or cutting member to facilitate cutting by heating
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface 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
    • C21D2261/00—Machining or cutting being involved

Definitions

  • the present invention relates to a method for producing a component by further molding a preformed contour of a circuit board according to the preamble of patent claim 1.
  • the method according to the invention is characterized in
  • a blank or sheet metal blank is understood to mean a blank of a sheet metal, in particular a sheet steel.
  • the metal sheets can be
  • a component is understood to be a component produced from a sheet metal blank by deformation by means of a forming tool at ambient temperature.
  • all sheet metal materials come into consideration as sheet materials, but especially steel.
  • Such components are mainly used in automobile construction, but also in the home appliance industry, in mechanical engineering or construction or in the field of the same offer applications.
  • the cut board After cutting the cut board is placed in a forming tool and in single or multi-stage forming steps the finished component, such as. a chassis carrier generated.
  • the cut edges especially when raised or raised, e.g. in collar operations in perforated boards, particularly stressed.
  • Topography of the cut surface is created.
  • the testing of the forming behavior of cut sheet edges with regard to their edge crack sensitivity is carried out with a hole expansion test according to ISO 16630.
  • a hole expansion test according to ISO 16630.
  • DE 10 2014 016 614 A1 describes a method for producing a component by forming a blank made of steel, in which a cut board after optional punching and / or cutting operations in the areas of
  • Seconds at least 600 ° C is subjected.
  • the heat treated edges are then cold formed at any time after being heated.
  • Manufacturing steps such as Punching or cutting operations to achieve recesses or openings, in selected, by the punching or
  • Cutting operations cold-strengthened edge regions, to obtain a preformed contour of a first deformation at ambient temperature is subjected, which is characterized in that optionally already provided for forming edge portions but at least the edge portions already subjected to the first deformation for a period of up to 10 seconds to a temperature vo n at least 600 ° C are heated and the edge areas at any time after the heat treatment of a second transformation or further transformations at ambient temperature, each with upstream again
  • both the room temperature, for example 20 ° C, and the temperature of the forming tool are considered.
  • the temperature of the forming tool can be well above the room temperature.
  • Tempering the edge portions of the preformed contour not only eliminates unwanted strain hardening but it will
  • the desired component can now be obtained.
  • each of the further forming steps also a further temperature treatment of the edge regions at least 600 ° C for the Duration of a maximum of 10 seconds, in particular for 0.02 to 10 or 0.1 to 2 seconds, precedes.
  • a component can be produced in a multi-step process in which the undesired material properties resulting from work hardening, in particular the increased susceptibility to cracking, are adjusted in the material first in each forming step, but are adjusted by the following
  • the individual forming and temperature treatment steps of the process according to the invention can be carried out at any time, i. temporally decoupled, done.
  • the inventive method is particularly applicable to any sheared material edges, in particular punched holes and edges with any contour. Due to the inventively increased Umfor mbarkeit it is possible to produce complex geometries, for which it requires, for example, several forming steps. Demanding components can also be produced in one piece, eliminating the need for additional joining operations.
  • the heat treatment is preferably carried out over the entire thickness of the board and in the plane direction of the board in a range which corresponds at most to their thickness.
  • the duration of the heat depends on the type of heat treatment process.
  • the heating itself can take place in any desired manner, for example, conductively, inductively via radiation heating or by means of laser processing.
  • Excellent for the heat treatment is the conductive heating, as it is often used in the automotive industry for example on the example of spot welds.
  • the process window for the temperature to be reached in the cutting edge area is also very large and covers a temperature range from above 600 ° C up to the solidus temperature of approx. 1500 ° C.
  • the heat treatment is carried out above Ad, it is converted into so-called metastable phases after treatment in the course of rapid cooling due to the surrounding cold material in the case of convertible steels.
  • the resulting structure then has at least the same or an increased hardness compared to the non-heat treated area.
  • the Vickers hardness increases by up to 1000 HV.
  • an advantageous development of the invention provides for rinsing these areas with inert gases, for example argon or nitrogen.
  • inert gases for example argon or nitrogen.
  • the inert gas purging takes place during the duration of the heat treatment, but can also, if necessary, even shortly before the start and / or in a limited period of time still carried out after the heat treatment.
  • the forming steps of the method according to the invention can advantageously be carried out with the forming tools already in production, e.g.
  • Temperature treatment steps of the method according to the invention in the industrial application of the method is a particularly high flexibility in
  • the heating of the cut edges can also take place immediately after the first forming step or immediately after an optional further forming step.
  • a heat treatment device of a forming device for cold forming of the board can be connected directly downstream.
  • the board itself may e.g. be rolled flexibly with different thicknesses or joined from cold or hot strip of the same or different thickness and / or quality.
  • the invention is applicable to hot or cold rolled steel strip from soft to high strength steels, which may be provided with a corrosion inhibiting layer as a metallic and / or organic coating.
  • the metallic coating may, for example, contain or consist of zinc, magnesium, aluminum and / or silicon.
  • corrosion-inhibiting layer is not or only insignificantly influenced.
  • higher-strength steels all single-phase as well as multi-phase steel grades are used. These include microalloyed, higher-strength steel grades as well as bainitic, ferritic or martensitic grades as well as dual phases,
  • the Committee can be lowered on formed components and on the other hand, previously necessary joining operations, for example, by now feasible collar operations in the formation of e.g. Saved from storage locations.
  • the inventive method also allows due to the improved formability of the cut edges areas more complex component geometries and thus greater design freedom when using the same materials.
  • the fatigue strength of the cold-formed component is expected due to the setting, although possibly compared to
  • the inventive method can be integrated in a series production, which specifies a clocking in the range of 0.1 to 10 seconds, as insects ungsuze.
  • a series production which specifies a clocking in the range of 0.1 to 10 seconds, as
  • the invention further relates to the use of a steel circuit board for the production of a component, wherein the previously cut at room temperature from a strip or a sheet metal plate after optional further at
  • Edge regions for receiving a preformed contour of a first deformation at room temperature is subjected, and wherein the first deformation
  • edge regions for a maximum of 10 seconds, preferably from 0.02 to 10 seconds or from 0.1 to 2 seconds, to a temperature of at least 600 ° C are heated and the edge portions at any time after the heat treatment of a second transformation at
  • the band or sheet, from which the board used for the production of the component is cut preformed in a pre-treatment step and then cut from the already preformed band or sheet, the board, if this makes sense in terms of manufacturing technology.
  • the preforming can also be done only on the already cut board.
  • the cutting takes place by shear cutting, wherein the term shear cutting includes both open and closed cuts, ie both cutting and punching operations.
  • the left-hand image of FIG. 1 shows the optional preforming of a circuit board already cut by shear cutting.
  • the second image from the left in FIG. 1 shows the punching of a hole in the board (step 1).
  • the cut edges of the hole are then optionally subjected to a heating according to the invention (step 1a).
  • the method according to the invention furthermore includes the
  • preformed contour for example, to an incomplete collar (step 2).
  • Edge regions has a high strain hardening, which in further
  • edge areas are then used to eliminate or reduce the edge areas
  • step 4 Due to the temperature treatment, the component is also in the claimed edge areas to a considerable extent its formability back, so that in the next step, a new, further transformation can take place (step 4).
  • the material stresses generated by the second deformation can be at least partially eliminated by a subsequent temperature treatment of at least 600 ° C. for a maximum of 10 seconds, after which a third Forming step can take place. Should the desired result not be reached as a result of the third forming step, the steps of the temperature treatment of at least 600 ° C for a maximum of 10 seconds, followed by a subsequent forming step at room temperature, as often as may be repeated.
  • Embodiments be essential.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Ceramic Capacitors (AREA)
  • Soft Magnetic Materials (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

L'invention concerne un procédé pour la fabrication d'une pièce par mise en forme ultérieure d'un contour préformé d'une plaque, la plaque découpée au préalable à température ambiante à partir d'une bande ou d'une tôle étant soumise, après d'autres étapes de finition éventuelles réalisées à température ambiante, comme par exemple des opérations d'emboutissage ou de découpage pour obtenir des évidements ou des passages, dans des zones de bord choisies, écrouies à froid par les opérations d'emboutissage ou de découpage, pour l'obtention d'un contour préformé, à un premier formage à température ambiante. On chauffe éventuellement déjà les zones de bord prévues pour le formage, mais au moins les zones de bord déjà soumises au premier formage pendant une durée d'au maximum 10 secondes à une température d'au moins 600°C et les zones de bord sont soumises à un moment quelconque après ce traitement thermique à un deuxième formage ou à d'autre formages à température ambiante, des traitements thermiques étant à chaque fois réalisés au préalable.
EP18702238.9A 2017-02-23 2018-01-26 Procédé pour la fabrication d'une pièce par mise en forme ultérieure d'un contour préformé Active EP3585531B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017103729.2A DE102017103729A1 (de) 2017-02-23 2017-02-23 Verfahren zur Herstellung eines Bauteils durch Weiterformen einer vorgeformten Kontur
PCT/EP2018/051978 WO2018153615A1 (fr) 2017-02-23 2018-01-26 Procédé pour la fabrication d'une pièce par mise en forme ultérieure d'un contour préformé

Publications (2)

Publication Number Publication Date
EP3585531A1 true EP3585531A1 (fr) 2020-01-01
EP3585531B1 EP3585531B1 (fr) 2022-10-05

Family

ID=61094510

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18702238.9A Active EP3585531B1 (fr) 2017-02-23 2018-01-26 Procédé pour la fabrication d'une pièce par mise en forme ultérieure d'un contour préformé

Country Status (7)

Country Link
US (1) US20200038933A1 (fr)
EP (1) EP3585531B1 (fr)
KR (1) KR102386137B1 (fr)
DE (1) DE102017103729A1 (fr)
ES (1) ES2930811T3 (fr)
RU (1) RU2743046C1 (fr)
WO (1) WO2018153615A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220049324A1 (en) * 2019-02-27 2022-02-17 Jfe Steel Corporation Method for manufacturing steel sheet for cold press and method for manufacturing press component
EP4201578A1 (fr) * 2021-12-24 2023-06-28 Fundación Azterlan Appareil et méthode pour former des fraises et/ou des trous de souris dans une tôle d'aluminium haute résistance emboutie

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2859510A (en) * 1955-01-13 1958-11-11 Wheeling Steel Corp Method of forming a boiler head or the like
SU795631A2 (ru) * 1978-11-24 1981-01-15 Предприятие П/Я Р-6543 Способ отбортовки
RU2105626C1 (ru) * 1993-06-15 1998-02-27 Комсомольское-на-Амуре авиационное производственное объединение Способ отбортовки отверстий
DE102009016027A1 (de) * 2009-04-02 2010-10-07 Volkswagen Ag Verfahren zur Herstellung eines Bauteils, insbesondere eines Karosserieteiles, sowie Fertigungsstraße zur Durchführung des Verfahrens
DE102009049155B4 (de) 2009-10-12 2017-01-05 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Ermittlung der Kantenrissempfindlichkeit eines Blechmaterials und Vorrichtung zum Herstellen eines Prüflings aus diesem Blechmaterial
DE102011121904A1 (de) 2011-12-21 2013-06-27 Volkswagen Aktiengesellschaft Verfahren zur scherenden Bearbeitung von Blechen mit einer anschließenden Umformung sowie ein hierzu bestimmtes Schneidwerkzeug
EP2679692A1 (fr) * 2012-06-29 2014-01-01 GEDIA Gebrüder Dingerkus GmbH Procédé de fabrication d'un composant de formage en tôle d'acier durci par une presse
DE102012014258A1 (de) * 2012-07-12 2014-01-16 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung eines Bauteils aus Stahl mit verminderter Kantenrissempfindlichkeit
KR101477375B1 (ko) * 2013-02-27 2014-12-30 현대제철 주식회사 강판 및 그 제조 방법
US20140261919A1 (en) 2013-03-14 2014-09-18 Thyssenkrupp Steel Usa, Llc Low carbon-high manganese steel and manufacturing process thereof
DE102014016614A1 (de) 2014-10-31 2016-05-04 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung eines Bauteils durch Umformen einer Platine aus Stahl
DE102014116017A1 (de) * 2014-11-04 2016-05-04 Lissmac Maschinenbau Gmbh Vorrichtung mit einer Wendeeinheit zum Wenden eines Werkstücks und Bearbeitungsvorrichtung

Also Published As

Publication number Publication date
KR102386137B1 (ko) 2022-04-12
WO2018153615A1 (fr) 2018-08-30
RU2743046C1 (ru) 2021-02-12
KR20190120205A (ko) 2019-10-23
EP3585531B1 (fr) 2022-10-05
ES2930811T3 (es) 2022-12-22
DE102017103729A1 (de) 2018-08-23
US20200038933A1 (en) 2020-02-06

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