WO2024251590A1 - Assemblage structural mixte - Google Patents

Assemblage structural mixte Download PDF

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Publication number
WO2024251590A1
WO2024251590A1 PCT/EP2024/064801 EP2024064801W WO2024251590A1 WO 2024251590 A1 WO2024251590 A1 WO 2024251590A1 EP 2024064801 W EP2024064801 W EP 2024064801W WO 2024251590 A1 WO2024251590 A1 WO 2024251590A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal part
sheet metal
flange
bead
seam
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/EP2024/064801
Other languages
German (de)
English (en)
Inventor
Frank Stohler
Jochen Rintelmann
Jan-Oliver Brassel
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.)
Audi AG
Original Assignee
Audi 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 Audi AG filed Critical Audi AG
Priority to CN202480021284.4A priority Critical patent/CN120897816A/zh
Publication of WO2024251590A1 publication Critical patent/WO2024251590A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/005—Soldering by means of radiant energy
    • B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, electron beams [EB]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00
    • B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00 relating to investigating the properties, e.g. the weldability, of materials
    • B23K31/125—Weld quality monitoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • B23K33/004—Filling of continuous seams
    • B23K33/008—Filling of continuous seams for automotive applications
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/006—Vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof

Definitions

  • the invention relates to a mixed construction connection according to the preamble of claim 1 and a process arrangement for producing such a mixed construction connection according to claim 9.
  • soldering processes are established in which the brazing solder is melted using an industrial laser.
  • Laser beam soldering can be used to join a mixed construction made of a cast metal part and a sheet metal part.
  • Such a composite joint has the following advantages: Laser beam soldering is a non-destructive joining process in which the crystalline (i.e. non-formable) structure of the metal casting is not affected, meaning there is no risk of notching that could lead to premature component cracking/breakage.
  • the soldering seam creates a large-area force-transmitting connection between the sheet metal part and the metal casting, so that mechanical component stresses from the sheet metal part can be introduced into the metal casting over a large area. This reduces the risk of stress cracks in the extremely brittle metal casting.
  • a generic mixed construction connection has a metal casting and a sheet metal part.
  • the sheet metal part can be designed as an angle profile, with a sheet metal part base section and a sheet metal part flange set off from it. This, together with the metal casting, can limit a joint gap that is filled with weld or soldering material up to a seam depth in the welding or soldering process, forming a connecting seam that extends over a seam length between the metal casting and the sheet metal part. Due to the high process temperature at the soldering point, mechanical component stresses arise in the sheet metal part, which act via the connecting seam on the brittle, non-formable metal casting with a crystalline microstructure.
  • a connecting seam between two thin-walled sheet metal components is known from DE 10 2014 000 618 B4.
  • the two sheet metal components each have flange sections that delimit a joint gap that is filled with the solder. Beads are formed in the flange sections that are completely covered with weld or solder material after the welding or soldering process.
  • a process arrangement is known from DE 10 2015 016 513 B4 by means of which two components are joined in a laser beam welding process. The welding system of the process arrangement is integrated into a control loop in order to guarantee weld seam quality.
  • the object of the invention is to provide a hybrid construction connection with a metal casting and a sheet metal part, in which the component stresses acting on the metal casting can be reduced in a simple manner compared to the prior art.
  • the invention is based on a mixed construction connection with a cast metal part and a sheet metal part.
  • the sheet metal part can be an angle profile with a sheet metal part base section and a sheet metal part flange set off from it. This, together with the cast metal part, can delimit a joint gap which is filled with weld or solder material up to a seam depth in the welding or soldering process, specifically to form a connecting seam which extends over a seam length between the cast metal part and the sheet metal part.
  • the welding or soldering process according to the invention is preferably a laser soldering process in which the laser beam is guided along the joint gap, where it melts the brazing material, for example a copper-silicon wire.
  • a bead can be formed in the sheet metal part base section of the sheet metal part, offset parallel to the connecting seam. With the help of this bead, the component stresses that form during the soldering process can be reduced; this reduces the transfer of component stresses to the metal casting.
  • the base section bead formed in the sheet metal part base section can run at a distance from the connecting seam so that the base section bead is out of contact with the connecting seam.
  • a flange bead should also be provided in the sheet metal part flange. This can also relieve component stresses in the sheet metal part during the soldering process.
  • the flange bead is - in contrast to the base section bead - completely covered by the soldering material after the connecting seam has been formed.
  • the base section bead and the flange bead run parallel to each other along the seam length of the connecting seam.
  • the base section bead (and possibly also the flange bead) is completely continuous and/or uninterrupted over the seam length of the connecting seam.
  • the metal casting is free of beads to relieve component stresses. Due to the crystalline microstructure, the metal casting cannot deform during the welding or soldering process, but rather remains deformation-free.
  • a process arrangement for producing the composite joint according to the invention can be implemented as follows:
  • a soldering device of the process arrangement can be integrated into a control loop together with an electronic control unit and a detector.
  • the detector can record an actual process parameter during the welding or soldering process that correlates with the quality of the joint seam.
  • the electronic control unit can control the soldering device with a control signal depending on the recorded actual process parameter.
  • the electrical control unit is assigned a comparator module that compares the recorded actual process parameter with a stored target value.
  • the electronic control unit can determine the control signal for controlling the soldering device based on the difference between the actual process parameter and the target value.
  • the detector may be a radiometric device. This may consist of a radiation source generating X-rays or gamma rays and an imaging detection module.
  • the radiation source can be used as a transmitted light radiation source that illuminates the joining area, i.e. the soldering point.
  • the imaging detection module creates a radiation intensity image of this illuminated joining area.
  • the actual process parameter is determined by evaluating the radiation intensity image. This is forwarded to the electronic control unit, in which the target value/actual value comparison is carried out.
  • the actual process parameter can be a seam depth, an offset of the connecting seam to the joint between the two components and/or a material cross-section of the soldering material in the joint gap.
  • a riveting process is - just like the welding process described above - also a destructive joining process in which the crystalline microstructure of the metal casting is impaired, which creates the risk of notch formation, which leads to premature component cracking in the metal casting.
  • the sheet metal part flange can be divided transversely to the connecting seam into an overlap segment and a deformation segment.
  • the overlap segment overlaps with the metal casting and is connected to it in an overlap weld connection.
  • the deformation segment of the sheet metal part flange adjoining the overlap segment does not overlap with the metal casting and merges into the sheet metal part base section at a transition edge.
  • the bead is formed in the deformation segment of the sheet metal part flange.
  • Figure 1 shows a completed hybrid construction connection which is formed from a metal casting 1, for example from die-cast metal or specifically from die-cast aluminum, and a sheet metal part 3, for example an aluminum or sheet steel part.
  • the sheet metal part 3 is realized as a thin-walled angle profile which has a sheet metal part base section 5 and a sheet metal part flange 7 angled therefrom.
  • the metal casting 1 is also realized as a thin-walled angle profile which has a metal casting base section 9 and a metal casting flange 11.
  • the base sections 5, 9 of the two joining partners 1, 3 merge flush into one another at a connecting joint, while a joining gap 15 which is filled with soldering material 17 is defined between the flanges 7, 11 of the two joining partners 1, 3.
  • the soldering material 17 forms a connecting seam 19 which extends over a seam length I between the metal casting 1 and the sheet metal part 3.
  • the metal casting 1 can be a body-side cast frame to which the sheet metal part 3 is connected.
  • the sheet metal part 3 can be, for example, a side wall, a floor panel, an interior panel or an outer skin of the vehicle.
  • the sheet metal part 3 can be an intermediate support to which another add-on sheet metal part is attached using a point-punched riveting process.
  • a direct connection of the add-on part to the metal casting 1 via the punch rivet connection would, however, possibly lead to the formation of notches, which would cause the metal casting 1 to tear or break prematurely.
  • a base section bead 21 is formed in the sheet metal part base section 5, offset parallel to the connecting seam 19, by means of which component stresses in the sheet metal part 3 that form during the soldering process can be reduced. This can reduce the transmission of component stresses from the sheet metal part 3 to the cast metal part 1.
  • the base section bead 21 can preferably be positioned in a hidden area in order to avoid any impairment of the external appearance of the composite construction connection.
  • the base section bead 21 runs at a distance from the connecting seam 19, so that the base section bead 21 remains out of contact with the connecting seam 19 and is therefore freely deformable.
  • a flange bead 23 is formed in the sheet metal part flange 7 of the sheet metal part 3, which also relieves component stresses in the sheet metal part 3 during the welding or soldering process.
  • the flange bead 23 can no longer be deformed to relieve stress after the soldering process has taken place.
  • the flange bead 23 - in contrast to the base section bead 21 - is completely in a material connection with the weld or solder material 17 after the connecting seam 19 has been formed.
  • Both the base section bead 21 and the flange bead 23 extend over the entire seam length I of the connecting seam 19 completely continuously and without interruption.
  • the composite joint shown in Figure 1 is produced by a laser beam soldering process, as indicated in Figure 2. Accordingly, a laser beam 27 generated by a laser device 25 is guided along the connecting joint, where it melts the brazing material 29, for example a copper-silicon wire. The melted brazing material 29 flows into the joint gap 15, forming the connecting seam 19.
  • the soldering device 25 is integrated into a control loop together with an electronic control unit 31 and a detector. In the control loop, the detector records an actual process parameter x during the welding or soldering process, which correlates with the quality of the connecting seam.
  • the electrical control unit 31 is assigned a comparator module, which compares the recorded actual process parameter x with a target value z. Based on the difference between the actual process parameter x and the target value z, the control unit 31 determines a control signal y for controlling the laser device 25.
  • the detector is designed as a radiometric device.
  • This has a radiation source 35 that generates X-rays or gamma radiation and an imaging detection module 37.
  • the radiation source 35 is used as a transmitted light radiation source that illuminates the joining area.
  • the imaging detection module 37 generates a radiation intensity image of the illuminated joining area.
  • the actual process parameter is determined by evaluating the radiation intensity image and is fed to the electronic control unit 31.
  • the actual process parameter x can be a seam depth, an offset of the connecting seam to the joint path and/or a material cross-section of the soldering material 17 located in the joint gap 15.
  • FIG 3 or 4 further variants of a mixed construction connection are shown, in which the metal casting 1 and the sheet metal part 3 are welded together via weld seams 19, namely an overlap weld seam and a fillet weld running parallel thereto.
  • the sheet metal part flange 7 is divided transversely to the two weld seams 19 into an overlap segment 41 and a deformation segment 43.
  • the Overlap segment 41 overlaps with the metal casting 1 and is welded to it.
  • the deformation segment 43 of the sheet metal part flange 7 adjoining the overlap segment 41 does not overlap with the metal casting 1 and merges into the sheet metal part base section 5 at a transition edge 45.
  • the freely deformable bead 21 is formed in the deformation segment 43 of the sheet metal part flange 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Laser Beam Processing (AREA)

Abstract

L'invention concerne un assemblage structural mixte comprenant une pièce métallique coulée (1) et une pièce métallique en tôle (3), cette pièce métallique en tôle (3) comprenant une bride de pièce en tôle (7) qui a été reliée par soudage ou brasage à la pièce métallique coulée (1) par l'intermédiaire d'un cordon de liaison (19) qui s'étend sur une longueur de cordon (l) entre la pièce métallique coulée (1) et la pièce métallique en tôle (3). Selon l'invention, un collet (21) formé dans la pièce métallique en tôle (3), parallèlement et de manière décalée à côté du cordon de liaison (19), permet de réduire des tensions structurales dans la partie en tôle métallique (3).
PCT/EP2024/064801 2023-06-06 2024-05-29 Assemblage structural mixte Ceased WO2024251590A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202480021284.4A CN120897816A (zh) 2023-06-06 2024-05-29 混合结构连接组件

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023114823.0 2023-06-06
DE102023114823.0A DE102023114823A1 (de) 2023-06-06 2023-06-06 Mischbauverbindung

Publications (1)

Publication Number Publication Date
WO2024251590A1 true WO2024251590A1 (fr) 2024-12-12

Family

ID=91376981

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/064801 Ceased WO2024251590A1 (fr) 2023-06-06 2024-05-29 Assemblage structural mixte

Country Status (3)

Country Link
CN (1) CN120897816A (fr)
DE (1) DE102023114823A1 (fr)
WO (1) WO2024251590A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES3050123T3 (en) * 2023-10-12 2025-12-19 Benteler Automobiltechnik Gmbh Method for the production of a motor vehicle component

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19928537A1 (de) * 1999-06-22 2001-01-04 Volkswagen Ag Verbundlenkerachse
EP1203678A2 (fr) * 2000-11-03 2002-05-08 Bayerische Motoren Werke Aktiengesellschaft Pièce coulée pour répartir la force lors de la fixation de la structure porteuse d'une partie de la carrosserie
EP0921052B1 (fr) * 1997-12-06 2004-09-01 Volkswagen Aktiengesellschaft Elément structurel avec au moins une pièce de coulée en métal léger
DE102014000618B4 (de) 2014-01-18 2016-09-22 Audi Ag Verbindungsnaht zwischen zwei dünnwandigen Blechbauteilen
DE102015016513B4 (de) 2015-12-18 2021-08-05 Audi Ag Online-Prozessüberwachung und Online-Prozessregelung beim Verfahren zum form- oder stoffschlüssigen Verbinden zumindest zweier Bauteile durch ein Fügeverfahren mittels einer Radiometrievorrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2011339365B2 (en) * 2010-12-06 2016-02-11 Honda Motor Co., Ltd. Subframe structure
DE102011006364A1 (de) * 2010-12-06 2013-03-21 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Verfahren zum Verbinden eines ersten Bauteils mit einem zweiten Bauteil, Verwendung elektromagnetischen Pulsumformens zum Herstellen einer Verbindung, Kraftfahrzeugsitz, Kraftfahrzeugtür sowie Kraftfahrzeug
DE102018128402A1 (de) * 2018-11-13 2020-05-14 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Herstellung einer Laserschweißverbindung
DE102019219743A1 (de) * 2019-12-16 2021-06-17 PLR Prüftechnik Linke & Rühe GmbH Verfahren zur Charakterisierung einer Schweißnaht
DE102020215071A1 (de) * 2020-11-30 2022-06-02 Volkswagen Aktiengesellschaft Verfahren zur Herstellung eines Batterieelements
DE102021207519A1 (de) * 2021-07-14 2023-01-19 Technische Universität München, Körperschaft des öffentlichen Rechts Methode zur 3D-Charakterisierung von Schweißnähten im Hinblick auf Defekte und die Schweißnahtgeometrie

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0921052B1 (fr) * 1997-12-06 2004-09-01 Volkswagen Aktiengesellschaft Elément structurel avec au moins une pièce de coulée en métal léger
DE19928537A1 (de) * 1999-06-22 2001-01-04 Volkswagen Ag Verbundlenkerachse
EP1203678A2 (fr) * 2000-11-03 2002-05-08 Bayerische Motoren Werke Aktiengesellschaft Pièce coulée pour répartir la force lors de la fixation de la structure porteuse d'une partie de la carrosserie
DE102014000618B4 (de) 2014-01-18 2016-09-22 Audi Ag Verbindungsnaht zwischen zwei dünnwandigen Blechbauteilen
DE102015016513B4 (de) 2015-12-18 2021-08-05 Audi Ag Online-Prozessüberwachung und Online-Prozessregelung beim Verfahren zum form- oder stoffschlüssigen Verbinden zumindest zweier Bauteile durch ein Fügeverfahren mittels einer Radiometrievorrichtung

Also Published As

Publication number Publication date
DE102023114823A1 (de) 2024-12-12
CN120897816A (zh) 2025-11-04

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