WO2019242901A1 - Procédé de fabrication d'éléments en tôle optimisés en charge - Google Patents

Procédé de fabrication d'éléments en tôle optimisés en charge Download PDF

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Publication number
WO2019242901A1
WO2019242901A1 PCT/EP2019/058743 EP2019058743W WO2019242901A1 WO 2019242901 A1 WO2019242901 A1 WO 2019242901A1 EP 2019058743 W EP2019058743 W EP 2019058743W WO 2019242901 A1 WO2019242901 A1 WO 2019242901A1
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WO
WIPO (PCT)
Prior art keywords
component
sheet metal
preformed
mpa
less
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.)
Ceased
Application number
PCT/EP2019/058743
Other languages
German (de)
English (en)
Inventor
Martin Kibben
Lars Bode
Thomas Steier
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.)
ThyssenKrupp Steel Europe AG
ThyssenKrupp AG
Original Assignee
ThyssenKrupp AG
ThyssenKrupp Steel AG
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 ThyssenKrupp AG, ThyssenKrupp Steel AG filed Critical ThyssenKrupp AG
Priority to EP19717265.3A priority Critical patent/EP3810349A1/fr
Publication of WO2019242901A1 publication Critical patent/WO2019242901A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • 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
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/08—Upsetting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

Definitions

  • the invention relates to a method for producing sheet metal components from a material, in particular for an automobile body, comprising the
  • Method steps preforming a workpiece into a preformed component, excess material being introduced into the preformed component at least in regions, and calibrating the preformed component into an at least partially final molded component using the excess material, in particular wherein the preformed component is compressed at least in sections.
  • the invention relates to the use of a sheet metal component.
  • Molded sheet metal components are used on an industrial scale, in particular
  • Half-shells usually produced by a deep-drawing process (with and without hold-down devices) from sheet metal blanks, ie essentially flat sheets
  • Conventional deep drawing is a sheet metal blank formed into a half-shell by tensile pressure forming in accordance with DIN 8584.
  • a hold-down device is used to prevent the board material from buckling and wrinkling when it flows into the die under the effect of the tangential compressive stress.
  • the hold-down device presses on the edge of the sheet and this against the edge of the die, causing frictional tension between the edge of the sheet and the hold-down device.
  • a disadvantage of this, however, is that the sheet-metal blank undergoes a strong deformation during deep drawing and the frictional stresses due to batch-dependent
  • Deep-drawn components whether with or without the use of a hold-down device, generally require a final edge trimming in which excess areas of the deep-drawn component are cut off. In the case of parts with flanges, this can be done, for example, by one or more trimming tools, some or all of the flange from above or obliquely in the desired manner
  • trimming With flangeless parts, on the other hand, trimming is already essential more complex, because it has to be cut off from the side, for example via a wedge gate valve.
  • the trimming operations are disadvantageous in that the trimming usually requires one or even several separate operations, which often also require their own tool technology and their own logistics system. In addition, trimming operations often reduce that
  • Adding material for the subsequent calibration step may leave the permissible, process-reliably controllable range of values.
  • thermoforming dispenses with active, external sheet metal storage.
  • active, external sheet metal storage When producing the preform, however, less plastic stretching occurs in particular in the component frames.
  • the disadvantage here is that the reduced elongation of the material used, especially in the frames, less solidified than in deep-drawn components. Under solidification, one becomes
  • Sheet thickness of the component is increased when calibrating the preform. Because here the distributed material addition of the preform is compressed in the direction of the sheet plane, which leads to a further increase in the sheet thickness in the component. This leads to higher required forces and tool loads. Overall, this leads to an increased sheet thickness of the formed component compared to the conventional method.
  • Forming means that the forming capacity of the high-strength material used is already largely consumed during the forming process and the finished component can therefore hardly bear any plastic deformation.
  • the load on the component for example in the case of body components in the event of a crash, this can mean that the material fails when it is folded or buckled due to tearing, and the component therefore cannot withstand the required level of energy and force. Such failure thus has a negative impact on the deformation behavior of the components in the event of a crash and thus on vehicle safety. But also for
  • Placing collars may no longer provide sufficient plastic forming capacity after the main shaping.
  • the present invention has for its object to provide a method for producing sheet metal components, with which the advantages of the
  • Deep drawing and trimming-free calibrating deep drawing can be combined, that is to say in particular high-precision sheet metal components can be produced can, the at least similar advantageous mechanical properties [about consolidation) as appropriately dimensioned deep-drawn
  • the present invention is based on the object of specifying the use of a corresponding sheet metal component.
  • This object is achieved according to a first teaching of the present invention in a method for producing sheet metal components from a material, in particular for an automobile body, comprising preforming a workpiece into a preformed component, excess material being introduced into the preformed component at least in regions, and calibrating the preformed component to an at least partially final molded component using the
  • the preformed component can be formed in one or more steps using various shaping processes that can also be combined with one another
  • the preforming can be, for example, deep-like
  • Forming step include.
  • the sheet metal component can in particular be a flanged or flangeless half-shell.
  • the preforming can also involve multi-stage shaping, for example embossing the base to be created and raising the frames to be created or optionally placing the flanges to be created. Special forms of deep drawing are also conceivable, such as combinations of folding and / or stamping.
  • the preformed component obtained by the preforming can in particular be regarded as a near-net shape component which is the intended one
  • Calibration can be understood in particular to mean final shaping of the preformed component, which can be achieved, for example, by a pressing process.
  • the final molded component can be essentially one
  • Processing steps can be subjected, such as an insertion of connection holes.
  • the aim is to design the calibration form in such a way that, if possible, no further shaping steps are necessary.
  • the workpiece is, for example, an essentially flat sheet metal blank.
  • the material from which the workpiece is produced is in principle any material which has the ratio of yield strength to tensile strength according to the invention.
  • the material is preferably a malleable metal, in particular a steel material, preferably a multi-phase steel.
  • Sheet thickness or the actually developed cross-sectional length of the finally formed sheet metal component would actually be necessary. This excess material is used for
  • the excess material can be provided, for example, as a material reserve in the floor area, in the frame area, in the flange area and / or in a transition area between the flange and frame area or frame and floor area.
  • the yield strength R p0 , 2 and the tensile strength R m as well as other parameters described here, such as the elongation at break, are in the sense of the invention in particular in a tensile test according to DIN EN ISO 6892-1: 2017-02, z. B.
  • a generic method » in particular a trimmed or reduced-calibrating deep-drawing process (hereinafter also referred to as the “BKT method”), can be used in such a way that high-dimensional sheet metal components, in particular half-shells, that can produce similar have partly identical or even improved mechanical properties as appropriately dimensioned conventionally deep-drawn sheet metal components, but require a lower operating weight and can also be manufactured true to size and process reliably. It has been shown that the skillful selection of materials described achieves that the final molded component is at least similar or essentially identical mechanical
  • Sheet metal component This means that the selection of materials according to the invention means that sheet metal components can be provided, which on the one hand have dimensional accuracy familiar from the BKT process on the one hand, and on the other hand the usual low wall thicknesses and mechanical properties, such as the rest, that are familiar from conventional deep drawing (with or without the use of a hold-down device) - Formability (that is, the possibility of plastic deformation that a material can withstand without cracking, such as the elongation at break and the
  • Yield strength R p o, 2 and / or tensile strength R m Yield strength R p o, 2 and / or tensile strength R m ).
  • these mechanical properties known from conventional deep drawing, such as the residual formability can also be exceeded with the same starting material.
  • the properties of the material described relate to the unformed state.
  • Embodiments of the B KT method attributed to the applicant are described, for example, in German Offenlegungsschriften DE 10 2007 059 251 Al, DE 10 2008 037 612 Al, DE 10 2009 059 197 Al, DE 10 2013 103 612 Al, DE 10 2013 103 751 Al , DE 10 2016 118 418 Al and DE 10 2016 118 419 Al, the content of which is incorporated by reference.
  • the features of the BKT process have in common that in a first process step with a modified A preform is produced that comes as close as possible to the final shape or finished shape of the component, but with the difference that in the
  • component sections such as flange, frame and / or floor
  • Excess material are introduced, which are shaped out again in a second method step by a special upsetting of the at least sectionally, in particular entire, preformed component during calibration.
  • the entire cross section of the preformed component has excess board material due to its geometric shape, due to the excess material during the forming of the
  • the preformed component has excess board material due to its geometric shape, the excess material during the shaping of the preformed component into its final shape by at least one further pressing process Component is compressed to the final molded component, the preformed component having the excess board material in the transition region between the frame region and the flange region.
  • a material quantity adjustment is set in the preformed component, the material quantity adjustment being set with a floor-specific, frame-specific, radius-specific and / or flange-specific material quantity adjustment.
  • the bottom area of the preformed component essentially has the geometry and / or the local cross sections of the bottom area of the at least partially finished component.
  • Residual forming capacity positively influenced.
  • the introduced excess material is compressed in the direction of the sheet metal plane, which leads to the fact that the springback of the sheet metal components is essentially eliminated, since the introduced compressions overlap the springback forces or transform stresses in the sheet metal component that trigger a springback.
  • Conventional deep drawing can advantageously be compensated for by using a material with a higher yield point than the material used in conventional deep drawing.
  • the final molded component can then have similar or essentially identical mechanical characteristics than if it had been thermoformed.
  • the increased wall thickness or sheet thickness of the finally formed sheet metal component compared to sheet metal components produced by conventional deep drawing can also be advantageously used in such a way that a sheet metal blank of reduced thickness is now used. In particular with regard to a possible elimination of the edge trim, the operating weight can thus be reduced even further.
  • the described method can be used to provide components which, with a lower operating weight and less equipment, require high dimensional accuracy of a BKT method and still both a similar or essentially identical geometry as well as similar or essentially identical
  • the preforming of the workpiece into the preformed component takes place essentially without holding.
  • This is understood in particular to mean that the method is carried out with a distanced, with a non-force-loaded or even without hold-down or sheet holder.
  • the workpiece is therefore preferably not clamped during preforming. This can be achieved by preforming, for example, using a special form of deep drawing, the so-called “crash forming” or “embossing with folding”.
  • the material (in the unformed state) has a ratio of yield strength R p0.2 to strength R m of> 0.56, preferably> 0.6, preferably> 0.62, particularly preferably> 0 , 64, more preferably from> 0.66, more preferably> 0.7.
  • R p0.2 to strength R m of particularly preferably> 0.64, it is possible to improve the material properties
  • Sheet metal components can, however, be manufactured more dimensionally than with conventional deep drawing. Another improvement in aligning the
  • the finally formed sheet metal components can be produced in a dimensionally stable form without excessive local loads
  • the sheet metal component is a half-shell-shaped sheet metal component, in particular an im
  • the workpiece is a sheet metal blank.
  • the sheet metal plate has a thickness of less than 3.5 mm, preferably less than 3 mm, particularly preferably less than 2.4 mm.
  • the sheet metal plate can have a thickness between 0.7 mm and 1.8 mm. The method according to the invention can be used particularly advantageously directly on sheet metal blanks, further preforming steps can thus be avoided.
  • the material in the non-deformed state has a tensile strength R m of at least 500 MPa, preferably at least 600 MPa, particularly preferably at least 700 MPa along and / or transversely to the rolling direction.
  • the material has a tensile strength R m of at least 800 and / or at most 1250 MPa along and / or across the rolling direction. It has been shown that, in particular by using materials with a tensile strength in the specified range, it is possible to produce sheet metal components with shaped properties that are similar or identical to conventionally dimensioned, deep-drawn sheet metal components.
  • the material preferably has a tensile strength R m of 900 to 1200 MPa along and / or across the rolling direction. With such a material, a further improved adjustment of the properties of the finally formed sheet metal component to a similarly or essentially identically dimensioned conventionally deep-drawn sheet metal component can be achieved.
  • the material has a yield strength R p o » z of at least 400 MPa, preferably at least 500 MPa, more preferably at least 600 MPa along and / or across
  • the material has a yield strength R p0 , 2 of at least 700 and / or at most 950 MPa along and / or across the rolling direction. It has been shown that, in particular, by using such a material, a further improved matching of the properties of the finally formed sheet metal component to a similarly or essentially identically dimensioned conventionally deep-drawn sheet metal component can be achieved. At the same time, however, it has been shown that, despite the reshaping with a comparatively high yield strength compared to conventional deep drawing, a high degree of dimensional accuracy can be achieved, in particular due to the lower equipment expenditure and the reduced operating weight.
  • the material has an elongation at break Aeo of less than 30%, in particular less than 25%, preferably less than 20%, preferably less than 15%, particularly preferably less than 10%.
  • the material is a steel, in particular a multi-phase steel, preferably a dual-phase steel. It was recognized that the method according to the invention can advantageously be used for the production of sheet metal components made of steel, in particular of multi-phase steel, preferably of dual-phase steel.
  • the material is a steel which has one or more (in particular all) of the following alloy components in percent by weight (% by weight):
  • Material according to the invention with the method steps according to the invention can thus be cost-effectively provided with sheet metal components with essentially identical properties as in conventional deep drawing.
  • the invention also relates to the use of a sheet metal component produced using a method according to the invention
  • Automotive body component in particular as a component of a frame, a longitudinal or cross member, a column or a crash structure.
  • it is a component that is relevant for crash safety. It has been shown that The sheet metal components produced according to the invention are optimally suited for use as an automotive body component.
  • the car body components previously used by conventional deep drawing can thus be replaced by appropriate alternatives.
  • Sheet thickness of 1.35 mm there is an average elongation of 10% during forming on the sheet metal component. Due to the expansion of the material and the simultaneous hardening, there is still a possible residual expansion of 8% in the sheet metal component before cracks occur, so that the forming capacity is limited accordingly. In addition, there is an increased yield strength of 700 MPa for this conventionally deep-drawn sheet metal component.
  • a material is first selected which is a
  • the material should have essentially the same mechanical properties after forming as the conventionally deep-drawn sheet metal component, a yield strength of 700 MPa and a minimum elongation at break of 8%. This is so that the final shape After forming, the component has essentially the same wall thickness or sheet thickness as the deep-drawn sheet metal component, a flat sheet metal plate with a thickness of 1.35 mm to 1.4 mm reduced compared to the deep drawing shown above is selected Thickness of 1.4 mm used, which has a ratio of yield strength R p0.2 to strength R m of particularly preferably> 0.64.
  • the sheet metal blank made of this material is first preformed into a preformed component, excess material being introduced into the preformed component at least in some areas, and then the preformed component is calibrated to an at least partially finished component using the excess material.
  • the final molded component produced in this way has a geometry that is essentially identical to that of the conventionally deep-drawn component, in particular an essentially identical wall thickness, and also has mechanical properties and crash properties similar to this, but could be produced reliably with high dimensional accuracy.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

L'invention concerne un procédé de fabrication d'éléments en tôle à partir d'un matériau, en particulier pour une carrosserie d'automobile. Le procédé comprend les étapes : de préformage d'une pièce de manière à obtenir un élément préformé, une matière excédentaire au moins par endroits étant introduite dans l'élément préformé ; et d'étalonnage de l'élément préformé de manière à obtenir un élément fini au moins par endroits au moyen de la matière excédentaire, l'élément préformé étant en particulier au moins en partie refoulé. L'invention est caractérisée en ce que le matériau présente un rapport de la limite d'élasticité apparente Rp0,2 sur la résistance à la traction Rm de Rp0,2/Rm ≥ 0,53.
PCT/EP2019/058743 2018-06-19 2019-04-08 Procédé de fabrication d'éléments en tôle optimisés en charge Ceased WO2019242901A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19717265.3A EP3810349A1 (fr) 2018-06-19 2019-04-08 Procédé de fabrication d'éléments en tôle optimisés en charge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018114653.1A DE102018114653A1 (de) 2018-06-19 2018-06-19 Verfahren zur Herstellung lastoptimierter Blechbauteile
DE102018114653.1 2018-06-19

Publications (1)

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WO2019242901A1 true WO2019242901A1 (fr) 2019-12-26

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DE (1) DE102018114653A1 (fr)
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DE102013103612A1 (de) 2013-04-10 2014-10-16 Thyssenkrupp Steel Europe Ag Verfahrung und Stauchwerkzeug zum Herstellen von hochmaßhaltigen Halbschalen
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US20150059935A1 (en) * 2012-03-30 2015-03-05 Voestalpine Stahl Gmbh High strength cold rolled steel sheet and method of producing such steel sheet
US9115416B2 (en) * 2011-12-19 2015-08-25 Kobe Steel, Ltd. High-yield-ratio and high-strength steel sheet excellent in workability
DE102016116759A1 (de) * 2016-09-07 2018-03-08 Thyssenkrupp Ag Verfahren und Werkzeug zur Herstellung von Blechbauteilen
DE102016118419A1 (de) 2016-09-29 2018-03-29 Thyssenkrupp Ag Verfahren und Vorrichtung zum Herstellen von Bauteilen mit angepasstem Bodenbereich
DE102016118418A1 (de) 2016-09-29 2018-03-29 Thyssenkrupp Ag Verfahren zur Herstellung eines geformten Bauteils mit einem maßhaltigen Zargenbereich

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