DE19605341B4 - Method for welding two galvanized sheets to be joined - Google Patents

Method for welding two galvanized sheets to be joined Download PDF

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Publication number
DE19605341B4
DE19605341B4 DE19605341A DE19605341A DE19605341B4 DE 19605341 B4 DE19605341 B4 DE 19605341B4 DE 19605341 A DE19605341 A DE 19605341A DE 19605341 A DE19605341 A DE 19605341A DE 19605341 B4 DE19605341 B4 DE 19605341B4
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Prior art keywords
welding
sheets
weld
edge regions
joined
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Expired - Fee Related
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DE19605341A
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German (de)
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DE19605341A1 (en
Inventor
Manfred Babel
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Volkswagen AG
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Volkswagen AG
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Priority to DE19605341A priority Critical patent/DE19605341B4/en
Publication of DE19605341A1 publication Critical patent/DE19605341A1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K33/00Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/16Removal of by-products, e.g. particles or vapours produced during treatment of a workpiece
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20Bonding
    • B23K26/21Bonding by welding
    • B23K26/22Spot welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20Bonding
    • B23K26/21Bonding by welding
    • B23K26/24Seam welding
    • B23K26/244Overlap seam welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20Bonding
    • B23K26/32Bonding taking account of the properties of the material involved
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/34Coated articles, e.g. plated or painted; Surface treated articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00Materials to be soldered, welded or cut
    • B23K2103/08Non-ferrous metals or alloys
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00Materials to be soldered, welded or cut
    • B23K2103/50Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26

Abstract

Verfahren zum Schweißen zweier zu verbindender verzinkter Bleche (1, 2) mit einander überlappenden Randbereichen (3, 4; 18, 19), insbesondere im Karosseriebau, wobei die Randbereiche (3, 4; 18, 19) sich unter Bildung eines taschenförmigen Spaltes (8; 20) längs einer anzubringenden Schweißnaht (9; 23) wenigstens beinahe berühren und der Spalt (8, 20) in vorgegebenen Abständen unterbrochen ist und daß die Randbereiche (3, 4; 18, 19) im Bereich dieser Unterbrechungen (5, 6; 16, 17) vollflächig aufeinanderliegen, dadurch gekennzeichnet, dass die Bleche durch Punktschweißung (10, 11; 21, 22) der Unterbrechungen (5, 6; 16, 17) geheftet werden bevor die Schweißnaht (9; 23) gelegt wird.Method for welding two galvanized sheets (1, 2) to be joined with overlapping edge regions (3, 4, 18, 19), in particular in the bodywork, the edge regions (3, 4, 18, 19) forming a pocket-shaped gap (3, 4, 18, 19) 8, 20) are at least almost in contact with one another along a weld seam (9, 23) to be attached, and the gap (8, 20) is interrupted at predetermined intervals, and in that the edge regions (3, 4, 18, 19) in the region of these interruptions (5, 6 16, 17) over the entire surface, characterized in that the sheets are tacked by spot welding (10, 11, 21, 22) of the interruptions (5, 6, 16, 17) before the weld (9, 23) is laid.

Figure 00000001
Figure 00000001

Description

Die Erfindung betrifft ein Verfahren gemäß dem Oberbegriff des Patentanspruchs.The The invention relates to a method according to the preamble of the claim.

Im Karosseriebau werden aus Korrosionsschutzgründen bisweilen verzinkte Bleche benutzt. Bei der Verbindung zweier solcher Bleche durch Schweißen sind besondere Gestaltungsregeln zu beachten, damit einerseits eine dauerhafte Schweißverbindung überhaupt zustande kommt und andererseits eine Verletzung der Zinkhaut weitestgehend vermieden wird.in the Bodywork corrosion protection reasons sometimes galvanized sheets used. When connecting two such sheets by welding special design rules to be observed, so on the one hand a permanent Welded joint at all on the other hand, a violation of the zinc skin largely avoided becomes.

Ein gattungsgemäßes Verfahren ist aus der US 46 82 002 A bekannt, die sich auf ein Laserschweißverfahren von Metallblechen bezieht, die durch ein bei niedrigen Temperaturen verdampfendes Material, beispielsweise Zink, geschützt sind. Dabei ist ein Strömungsdurchlass durch eine spezielle Form der Bleche bestimmt, die durch Klemmmittel fixiert sind.A generic method is from the US 46 82 002 A known, which relates to a laser welding of metal sheets, which are protected by a low-temperature evaporating material, such as zinc. In this case, a flow passage is determined by a special shape of the sheets, which are fixed by clamping means.

Die DE 38 12 448 C1 bezieht sich auf zwei durch Laserschweißen miteinander zu verbindende beschichtete Dünnbleche. Diese stoßen im Verbindungsbereich entlang der Schweißnaht mit unterschiedlichen Krümmungsradien aufeinander und sind beidseitig der Schweißnaht voneinander beabstandet. Auf diese Weise werden Entgasungskammern zur Aufnahme der sich beim Schweißvorgang bildenden gasförmigen Beschichtungsstoffe gebildet.The DE 38 12 448 C1 refers to two coated thin sheets to be joined together by laser welding. These abut one another in the connection region along the weld seam with different radii of curvature and are spaced from each other on both sides of the weld seam. In this way, degassing chambers are formed for receiving the gaseous coating materials which form during the welding process.

Weiterhin sind auch durch die JP 070 32 180 A die JP 610 27 189 A sowie die JP 602 55 294 A Verfahren zum Verschweißen von Blechen bekannt, die ein ungehindertes Entweichen von Schweißgasen gestatten.Furthermore, also by the JP 070 32 180 A the JP 610 27 189 A as well as the JP 602 55 294 A A method for welding sheets known that allow unhindered escape of welding gases.

Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Verfahren aufzuzeigen, das die Schweißbarkeit der Bleche verbessert.Of the Invention is based on the object, a generic method demonstrate the weldability the sheets improved.

Diese Aufgabe wird mit den kennzeichnenden Merkmalen des Patentanspruchs 1 gelöst.These Task is with the characterizing features of the claim 1 solved.

Eine vorteilhafte Ausgestaltung der Erfindung ist Gegenstand des Unteranspruchs. Eine solche Ausführung läßt sowohl eine Punktschweißung als auch eine Nahtschweißung zu. Dabei können mit der Punktschweißung die Bleche zunächst geheftet werden; mit der anschließenden Nahtschweißung, beispielsweise mittels einer Laserstrahlschweißeinrichtung, wird dann die erforderliche Festigkeit, gegebenenfalls auch eine Dichtheit im Übergangsbereich zwischen den beiden Blechen erreicht.A advantageous embodiment of the invention is the subject of the subclaim. Such an execution lets both a spot weld as also a seam weld to. It can with spot welding the sheets first be stapled; with the subsequent seam welding, for example by means of a laser beam welding device, then becomes the required strength, optionally also a Tightness in the transition area between reached the two sheets.

Zwei Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnungen erläutert. Darin zeigen:Two embodiments The invention will be explained below with reference to the drawings. In this demonstrate:

1 in perspektivischer Darstellung ein erstes Ausführungsbeispiel einer Schweißverbindung zweier verzinkter Bleche; 1 a perspective view of a first embodiment of a welded joint of two galvanized sheets;

2 einen Schnitt durch die Schweißverbindung entsprechend der Schnittlinie II-II in 1; 2 a section through the welded joint according to the section line II-II in 1 ;

3 als zweites Ausführungsbeispiel die Draufsicht auf einen Dachkanal einer Fahrzeugkarosserie; 3 as a second embodiment, the plan view of a roof duct of a vehicle body;

4 einen Schnitt durch den Dachkanal entsprechend der Schnittlinie IV-IV in 3 und 4 a section through the roof channel according to the section line IV-IV in 3 and

5 einen Schnitt durch den Dachkanal entsprechend der Schnittlinie V-V in 3. 5 a section through the roof channel corresponding to the section line VV in 3 ,

Gemäß 1 und 2 sind zwei verzinkte Bleche 1 und 2 in ihren Randbereichen 3 und 4 miteinander verschweißt. Während das Trägerblech 2 einen im wesentlichen ebenen Randbereich 4 aufweist, ist der Randbereich 3 des Deckbleches 1 profiliert. Zwischen zwei Bereichen 5, 6, in denen die Randbereiche 3, 4 plan aufeinanderliegen, weist das Deckblech 1 einen Abschnitt 7 auf, in dem der Randbereich 3 über seine ganze Länge nach oben ausgestellt ist. Dieser Abschnitt 7 stellt eine nach außen offene Tasche 8 dar, deren Boden eine die beiden Bleche 1, 2 miteinander verbindende Schweißnaht 9 ist, die beispielsweise als Laserschweißnaht ausgebildet ist. Bevor diese Schweißnaht 9 gelegt wird, werden die beiden Bleche 1, 2 durch Schweißpunkte 10, 11 in den Bereichen 5, 6 geheftet. Beim Anbringen der Schweißnaht 9 dient die offene Tasche 8 der Abführung der beim Schweißen verzinkter Bleche freiwerdenden Gase. Erforderlichenfalls kann die Tasche 8 anschließend mit einem Dichtmittel verschlossen werden.According to 1 and 2 are two galvanized sheets 1 and 2 in their peripheral areas 3 and 4 welded together. While the carrier sheet 2 a substantially flat edge region 4 has, is the border area 3 of the cover plate 1 profiled. Between two areas 5 . 6 in which the border areas 3 . 4 plan on each other, assigns the cover plate 1 a section 7 on, in which the border area 3 is issued over its entire length upwards. this section 7 represents a bag that opens to the outside 8th whose bottom one the two sheets 1 . 2 interconnecting weld 9 is, which is formed for example as a laser weld. Before this weld 9 is laid, the two sheets are 1 . 2 by welding points 10 . 11 in the fields of 5 . 6 stapled. When attaching the weld 9 serves the open pocket 8th the discharge of gases released during welding of galvanized sheets. If necessary, the bag can 8th then sealed with a sealant.

Das gleiche Prinzip wie soeben beschrieben wird auch bei dem zweiten Ausführungsbeispiel gemäß den 3 bis 5 angewendet, in denen der Bereich eines Dachkanals 12 einer Fahrzeugkarosserie dargestellt ist. In ihm sind das Dach 13 und ein Karosserieseitenteil 14 miteinander verschweißt.The same principle as just described is also in the second embodiment according to the 3 to 5 applied in which the area of a roof duct 12 a vehicle body is shown. In it are the roof 13 and a body-side part 14 welded together.

Die in 3 gezeigte Draufsicht auf den Dachkanal 12 läßt wiederum einen mit 15 bezeichneten Abschnitt zwischen zwei Bereichen 16, 17 erkennen. Der Boden des Dachkanals 12 besteht aus zwei sich überlappenden und miteinander verschweißten Flanschen, dem ebenen Dachflansch 18 und dem profilierten Seitenteilflansch 19. Dieser ist nämlich im Abschnitt 15, sozusagen eine Tasche 20 bildend, ausgestellt und liegt in den Bereichen 16, 17 plan am Dachflansch 18 an. In diesen beiden Bereichen 16, 17 wurden die beiden Flansche 18, 19 vorab durch die Schweißpunkte 21, 22 miteinander verbunden; danach wurde am freien Ende des Dachflansches 18 eine durchgehende Schweißnaht 23 gelegt, die den Wasserdurchtritt von außen nach innen verhindert. Diese Schweißnaht 23 kann beispiels weise im Laserschweißverfahren hergestellt sein. Dabei kann das aus den verzinkten Blechen austretende Gas aus der Tasche 20 entweichen.In the 3 shown top view of the roof channel 12 lets one in turn 15 designated section between two areas 16 . 17 detect. The bottom of the roof channel 12 consists of two overlapping and welded together flanges, the flat roof flange 18 and the profiled side panel flange 19 , This is namely in the section 15 a bag, so to speak 20 educating, exhibiting and lying in the fields 16 . 17 plan on the roof flange 18 at. In these two areas 16 . 17 were the two flanges 18 . 19 in advance through the welds 21 . 22 connected with each other; afterwards it was at the free end of the roof flange 18 a continuous weld 23 placed, which prevents the passage of water from outside to inside. This weld 23 For example, can be made by laser welding. Here, the gas escaping from the galvanized sheets from the bag 20 escape.

Claims (2)

Verfahren zum Schweißen zweier zu verbindender verzinkter Bleche (1, 2) mit einander überlappenden Randbereichen (3, 4; 18, 19), insbesondere im Karosseriebau, wobei die Randbereiche (3, 4; 18, 19) sich unter Bildung eines taschenförmigen Spaltes (8; 20) längs einer anzubringenden Schweißnaht (9; 23) wenigstens beinahe berühren und der Spalt (8, 20) in vorgegebenen Abständen unterbrochen ist und daß die Randbereiche (3, 4; 18, 19) im Bereich dieser Unterbrechungen (5, 6; 16, 17) vollflächig aufeinanderliegen, dadurch gekennzeichnet, dass die Bleche durch Punktschweißung (10, 11; 21, 22) der Unterbrechungen (5, 6; 16, 17) geheftet werden bevor die Schweißnaht (9; 23) gelegt wird.Method for welding two galvanized sheets to be joined ( 1 . 2 ) with overlapping edge regions ( 3 . 4 ; 18 . 19 ), in particular in the body construction, wherein the edge regions ( 3 . 4 ; 18 . 19 ) to form a pocket-shaped gap ( 8th ; 20 ) along a weld to be attached ( 9 ; 23 ) at least almost touch and the gap ( 8th . 20 ) is interrupted at predetermined intervals and that the edge regions ( 3 . 4 ; 18 . 19 ) in the area of these interruptions ( 5 . 6 ; 16 . 17 ) over the entire surface, characterized in that the sheets by spot welding ( 10 . 11 ; 21 . 22 ) of interruptions ( 5 . 6 ; 16 . 17 ) before the weld ( 9 ; 23 ) is placed. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Schweißnaht (9; 23) im Laserschweißverfahren hergestellt wird.A method according to claim 1, characterized in that the weld ( 9 ; 23 ) is produced by laser welding.
DE19605341A 1995-02-24 1996-02-14 Method for welding two galvanized sheets to be joined Expired - Fee Related DE19605341B4 (en)

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DE19605341A DE19605341B4 (en) 1995-02-24 1996-02-14 Method for welding two galvanized sheets to be joined

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DE19506474.7 1995-02-24
DE19506474 1995-02-24
DE19605341A DE19605341B4 (en) 1995-02-24 1996-02-14 Method for welding two galvanized sheets to be joined

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DE19605341B4 true DE19605341B4 (en) 2009-07-09

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19757245A1 (en) * 1997-12-22 1999-06-24 Eko Stahl Gmbh Process for joining sheet metal parts
DE10053789B4 (en) * 2000-10-30 2009-11-26 Volkswagen Ag Laser welding
US6794603B1 (en) * 2003-03-03 2004-09-21 Dana Corporation Laser joint welding metal material
JP5159019B2 (en) * 2003-09-19 2013-03-06 ダイムラー・アクチェンゲゼルシャフト Method for laser beam welding with tack welding
DE102005040200A1 (en) 2005-08-25 2007-03-01 Volkswagen Ag Distance powder for laser welding
DE102006014707A1 (en) * 2006-03-30 2007-10-04 Bayerische Motoren Werke Ag Joint connection for a motor vehicle attachment
DE102008019309A1 (en) 2007-11-27 2009-06-04 Johnson Controls Gmbh Structure component e.g. lower cross bar, of backrest and/or seat part frame for seat structure of vehicle i.e. motor vehicle, has compressing area serving for length adjustment, where area is rectangular or trapezoidal in shape
DE102017202671A1 (en) * 2017-02-20 2018-08-23 Bayerische Motoren Werke Aktiengesellschaft Method for welding two sheet metal components and composite component
DE102020103356A1 (en) * 2020-02-11 2021-08-12 Bayerische Motoren Werke Aktiengesellschaft Component arrangement and method for producing a component arrangement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60255294A (en) * 1984-05-31 1985-12-16 Kubota Ltd Laser beam welding method
JPS6127189A (en) * 1984-07-17 1986-02-06 Mitsubishi Electric Corp Laser welding method
US4682002A (en) * 1984-09-20 1987-07-21 Prima Progetti S.P.A. Method of laser welding sheet metal protected by low-vaporizing-temperature materials
DE3812448C1 (en) * 1988-04-14 1989-06-15 Bayerische Motoren Werke Ag, 8000 Muenchen, De
JPH0732180A (en) * 1993-07-13 1995-02-03 Nippon Steel Corp Laser beam welding method for galvanized steel sheets

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60255294A (en) * 1984-05-31 1985-12-16 Kubota Ltd Laser beam welding method
JPS6127189A (en) * 1984-07-17 1986-02-06 Mitsubishi Electric Corp Laser welding method
US4682002A (en) * 1984-09-20 1987-07-21 Prima Progetti S.P.A. Method of laser welding sheet metal protected by low-vaporizing-temperature materials
DE3812448C1 (en) * 1988-04-14 1989-06-15 Bayerische Motoren Werke Ag, 8000 Muenchen, De
JPH0732180A (en) * 1993-07-13 1995-02-03 Nippon Steel Corp Laser beam welding method for galvanized steel sheets

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