EP2852693B1 - Procédé de production d'un assemblage de pièces - Google Patents

Procédé de production d'un assemblage de pièces Download PDF

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Publication number
EP2852693B1
EP2852693B1 EP13721743.6A EP13721743A EP2852693B1 EP 2852693 B1 EP2852693 B1 EP 2852693B1 EP 13721743 A EP13721743 A EP 13721743A EP 2852693 B1 EP2852693 B1 EP 2852693B1
Authority
EP
European Patent Office
Prior art keywords
sheet metal
metal formed
formed part
heat treatment
coating
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.)
Not-in-force
Application number
EP13721743.6A
Other languages
German (de)
English (en)
Other versions
EP2852693A1 (fr
Inventor
Matthias LOIDL
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP2852693A1 publication Critical patent/EP2852693A1/fr
Application granted granted Critical
Publication of EP2852693B1 publication Critical patent/EP2852693B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • 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
    • C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
    • C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/56—Electroplating: Baths therefor from solutions of alloys
    • C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • 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

Definitions

  • the invention relates to a method for producing a component composite for a motor vehicle body, comprising at least one formed from a high-strength steel sheet material and provided with a metallic corrosion protection coating sheet metal part.
  • the invention further relates to a component composite produced by this method for a motor vehicle body.
  • the electrolytically applied metallic corrosion protection coating is generally brittle and constitutes a weak point in the case of bonding the sheet metal part (via the electrolytically applied metallic corrosion protection coating) to another component.
  • the invention has for its object to remedy this situation.
  • the above-mentioned method steps are carried out or carried out chronologically in the specified sequence, it being possible for pauses and / or transport paths to be provided between the individual steps.
  • the method according to the invention can include intermediate steps (eg cutting operations, parts transport, quality controls, etc.) that are not specified or sub-steps that are not explained in greater detail.
  • the heat treatment of the adhesive-bonded parts composite serves to increase the adhesion or adhesion of the electrolytically applied metallic corrosion protection coating on the base material of the sheet metal part concerned and thereby permanently improve the durability of the bond.
  • a heat treatment is also in the DE 10 2009 053 368 A1 described. Different to However, in the method according to the invention this serves to counteract hydrogen embrittlement of the base material.
  • the other component may be any body part. It is preferably provided that the other component is likewise a sheet-metal shaped part, wherein this shaped sheet metal part can likewise be formed from a higher-strength sheet metal material. Furthermore, the other component can also be provided with a metallic corrosion protection coating and in particular with an electrolytically applied metallic corrosion protection coating.
  • a higher-strength steel sheet material is understood to be a sheet material made of a steel material whose tensile strength is at least 800 MPa, preferably at least 900 MPa, particularly preferably at least 1000 MPa and in particular at least 1100 MPa.
  • the term "high-strength steel sheet material” thus also includes high-strength and ultra-high-strength steel sheet materials.
  • the starting sheet material already has higher-strength properties. Rather, these can also be formed in the course of the process according to the invention.
  • the forming of the starting sheet material includes or includes press-hardening or hardening.
  • press-hardening the sheet material previously heated to over 900 ° C is formed in a chilled tool and simultaneously cooled at high speed during molding to obtain an increase in strength.
  • press hardening z. A 16MnB5 or a 22MnB5 material.
  • the sheet metal material is preferably a thin sheet with a sheet thickness of up to 3.0 mm, preferably of up to 2.0 mm, particularly preferably of up to 1.5 mm and in particular of up to 1.0 mm.
  • An electrolytic or galvanic coating is understood to mean the electrochemical deposition of metallic deposits or coatings on the base material of the sheet metal part in question.
  • the applied metallic coating or corrosion protection coating can be single-layer or even be multilayered.
  • the metallic coating is at least partially applied to the sheet metal part. It is preferably provided that the coating is applied over the entire surface and in particular also on both sheet metal sides of the sheet metal part.
  • the metallic corrosion protection coating deposited in the electrolytic coating process may be a zinc-nickel (ZnNi) layer. It is preferably provided that the layer thickness of the electrolytically applied corrosion protection coating is less than or equal to 15 microns. In the case of a zinc-containing anticorrosion coating, it is provided that the layer thickness is greater than or equal to 5 ⁇ m and less than or equal to 15 ⁇ m and in particular amounts to approximately 7.5 ⁇ m.
  • the heat treatment of the part composite produced by bonding is carried out at a temperature of not more than 220 ° C.
  • the heat treatment time is 20 to 40 minutes and can be in particular about 30 minutes.
  • the heat treatment substantially completes the component composite.
  • the heat treatment takes place in the course of a painting process, wherein it is provided in particular that the parts composite produced by bonding has previously been incorporated into a larger part assembly (such as a motor vehicle body). Is it z. B. to a parts network or component composite for the Karosserierohbau so the heat treatment can be done relatively late or after completion of the body shell. In this way, one can make use of the heat treatment often required in the painting process, so that a separate heat treatment of the component composite produced by bonding can be omitted, which is particularly advantageous from an economic and ecological point of view.
  • the heat treatment in the course of a painting process can also be used to cure the adhesive used. It is preferably provided that during the painting process the bonding site is painted over.
  • a motor vehicle body is, for example, subjected to cathodic dip painting (KTL)
  • the baking process which is required in this case can be carried out, the motor vehicle body following the dip painting being a heating oven or the like is used for the heat treatment of the parts composite produced by bonding, especially since the parts composite and the sheet metal part incorporated therein with the electrolytically applied metallic corrosion protection coating must pass through this baking process anyway.
  • the solution of the problem also extends to a component assembly for a motor vehicle body, which was produced in particular by a method according to the invention, said component composite a first sheet metal part, which is formed from a high-strength steel sheet material and provided with an electrolytically applied metallic corrosion protection coating, and at least one second sheet metal part and wherein the two sheet metal parts are joined together by gluing.
  • the first sheet-metal shaped part is a reinforcing part and in particular an inner reinforcing part for the foot region of a B-pillar, as explained in more detail below in connection with the figures.
  • Fig. 1 shows the foot area of a B-pillar for a motor vehicle body.
  • the foot area of the B-pillar is designated overall by 10.
  • the B-pillar 10 merges into the lower side sill 11.
  • Both the B-pillar 10 and the side skirts 11 are sheet metal parts. It may be provided a one-piece design of the B-pillar 10 and the side sill 11 or a weld.
  • Fig. 1 further shows an inner reinforcement member 20 which is inserted from the inside or as shown from below into the transition region between the B-pillar 10 and side skirts 11, wherein bonding of a component composite is brought about.
  • the reinforcing member 20 could also be adhered from the outside.
  • the inner reinforcing member 20 is a sheet metal molding of a high-strength steel sheet material. In particular, it is a press-hardened sheet metal part.
  • the inner reinforcement part 20 is provided with an electrolytically applied metallic corrosion protection coating, which is in particular a ZiNi coating.
  • the B-pillar 10 and the side skirts 11 may be provided with such a corrosion protection coating.
  • step I a supplied starting sheet material is formed into the inner reinforcing member 20, which forming may include press-hardening. Subsequently, in step II, the inner reinforcement part 20 is cleaned. In step III, a metallic anticorrosion coating is applied to the inner reinforcement member 20 in an electrolytic deposition process. Subsequently, in step IV, the inner reinforcing member 20 provided with the electrolytically deposited metallic anticorrosive coating is adhered by bonding to the B-pillar 10 and the sill 11, as shown in FIG Fig. 1 illustrated by the arrow.
  • step V which follows directly or at a later time, the component bond produced by bonding between the sheet metal parts 20 and 10 or 11 is heat treated in order to increase the adhesive strength of the metallic corrosion protection coating on the base material of the inner reinforcement part 20 and thereby the resistance of the bond between the To improve components 10 and 11 and 20.
  • the heat treatment takes place in particular in the course of a painting process or following a painting process, as explained above. That in connection with the Fig. 2 explained method may include further intermediate steps and sub-steps.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Electroplating Methods And Accessories (AREA)

Claims (10)

  1. Procédé de fabrication d'un élément composite pour une carrosserie de véhicule avec au moins une préforme en tôle (20) réalisée en une tôle d'acier de grande résistance et équipée d'un revêtement métallique anticorrosion comprenant les étapes suivantes consistant à :
    - mettre en forme un matériau en tôle de départ fourni pour obtenir une préforme en tôle (20),
    - nettoyer la préforme en tôle (20),
    - appliquer un revêtement de protection anticorrosion métallique sur la préforme en tôle (20) par revêtement par voie électrolytique,
    - assembler la préforme en tôle (20) équipée du revêtement de protection anticorrosion métallique avec au moins un autre élément (10, 11) par collage, puis
    - traiter thermiquement l'élément composite obtenu par collage à une température ne dépassant pas 220°C et pendant une durée de traitement thermique de 20 à 40 minutes pour permettre d'augmenter l'adhérence du revêtement de protection anticorrosion métallique sur le matériau de base de la préforme en tôle (20) et ainsi améliorer la stabilité de l'adhésion.
  2. Procédé conforme à la revendication 1,
    dans lequel la mise en forme du matériau en tôle de départ comprend une trempe à la presse.
  3. Procédé conforme à la revendication 1 ou 2,
    caractérisé en ce que
    le traitement thermique est effectué à une température de 180°C.
  4. Procédé conforme à l'une des revendications précédentes,
    caractérisé en ce que
    la durée du traitement thermique est de 30 minutes.
  5. Procédé conforme à l'une des revendications précédentes 1 à 4,
    caractérisé en ce que
    le traitement thermique est effectué au cours d'un processus de laquage.
  6. Procédé conforme à l'une des revendications précédentes 1 à 4,
    caractérisé en ce que
    le traitement thermique est effectué au cours du processus de cuisson à la suite d'un laquage par immersion cathodique.
  7. Procédé conforme à la revendication 5 ou 6,
    caractérisé en ce que
    pendant le processus de laquage, les parties d'adhésion sont sur laquées.
  8. Procédé conforme à l'une des revendications précédentes,
    caractérisé en ce que
    le revêtement de protection anticorrosion métallique se séparant lors du processus de revêtement par voie électrolytique est une couche de zinc-nickel.
  9. Procédé conforme à l'une des revendications précédentes,
    caractérisé en ce que
    l'épaisseur de couche du revêtement de protection anticorrosion appliqué par voie électrolytique est inférieure ou égale à 15 µm.
  10. Elément composite destiné à une carrosserie de véhicule obtenu par la mise en oeuvre du procédé conforme à l'une des revendications précédentes,
    comprenant :
    - une première préforme en tôle (20) constituée par une pièce de renfort interne pour la zone de base d'une colonne B (10) qui est réalisée en une matériau en tôle d'acier de grande résistance et est équipée d'un revêtement de protection anticorrosion métallique appliqué par voie électrolytique, et
    - au moins une seconde préforme en tôle (10, 11) constituée par la zone de transition entre une colonne B (10) et un marchepied latéral (11),
    les deux préformes en tôle (20 ; 10, 11) étant assemblées par collage de sorte que la première préforme en tôle (20) soit introduite par l'extérieur dans la zone de transition entre la colonne B (10) et le marchepied latéral (11) et que l'élément composite soit obtenu par collage.
EP13721743.6A 2012-05-22 2013-05-08 Procédé de production d'un assemblage de pièces Not-in-force EP2852693B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012208494A DE102012208494A1 (de) 2012-05-22 2012-05-22 Verfahren zum Herstellen eines Bauteilverbunds
PCT/EP2013/059601 WO2013174655A1 (fr) 2012-05-22 2013-05-08 Procédé de production d'un assemblage de pièces

Publications (2)

Publication Number Publication Date
EP2852693A1 EP2852693A1 (fr) 2015-04-01
EP2852693B1 true EP2852693B1 (fr) 2017-01-04

Family

ID=48407554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13721743.6A Not-in-force EP2852693B1 (fr) 2012-05-22 2013-05-08 Procédé de production d'un assemblage de pièces

Country Status (3)

Country Link
EP (1) EP2852693B1 (fr)
DE (1) DE102012208494A1 (fr)
WO (1) WO2013174655A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021120263A1 (de) 2021-08-04 2023-02-09 Bayerische Motoren Werke Aktiengesellschaft Verfahren und Vorrichtung zum Herstellen eines beschichteten Strukturbauteils

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10256608A1 (de) * 2002-12-03 2004-07-01 Wilhelm Karmann Gmbh Seitenwandmodul für ein Kraftfahrzeug und Herstellungsverfahren für eine Kraftfahrzeugkarosserie
DE102009015160A1 (de) * 2009-03-26 2010-09-30 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Herstellung eines beschicht- und/oder fügbaren Blechformteils mit einer Korrosionsschutzbeschichtung
DE102009016852A1 (de) * 2009-04-08 2010-10-14 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Herstellung wärmebehandelter Blechformteile aus einem Stahlblechmaterial mit einer Korrosionsschutzbeschichtung und derartiges Blechformteil
JP4849186B2 (ja) * 2009-10-28 2012-01-11 Ｊｆｅスチール株式会社 熱間プレス部材およびその製造方法
DE102009053367A1 (de) * 2009-11-14 2011-05-19 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Erzeugung einer Korrosionsschutzbeschichtung auf einem höherfesten Stahlblechmaterial
DE102009053368A1 (de) 2009-11-14 2011-05-19 Bayerische Motoren Werke Aktiengesellschaft Verfahren und Fertigungsanlage zum Herstellen eines Blechformteils mit einer Korrosionsschutzbeschichtung
DE102010030465B4 (de) * 2010-06-24 2023-12-07 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Herstellen eines Blechformteils aus einem höherfesten Stahlblechmaterial mit einer elektrolytisch aufgebrachten Zink-Nickel-Beschichtung

Non-Patent Citations (1)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021120263A1 (de) 2021-08-04 2023-02-09 Bayerische Motoren Werke Aktiengesellschaft Verfahren und Vorrichtung zum Herstellen eines beschichteten Strukturbauteils

Also Published As

Publication number Publication date
EP2852693A1 (fr) 2015-04-01
WO2013174655A1 (fr) 2013-11-28
DE102012208494A1 (de) 2013-11-28

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