DE3620977A1 - Method for welding processed and corrosion-protected workpieces - Google Patents

Method for welding processed and corrosion-protected workpieces

Info

Publication number
DE3620977A1
DE3620977A1 DE19863620977 DE3620977A DE3620977A1 DE 3620977 A1 DE3620977 A1 DE 3620977A1 DE 19863620977 DE19863620977 DE 19863620977 DE 3620977 A DE3620977 A DE 3620977A DE 3620977 A1 DE3620977 A1 DE 3620977A1
Authority
DE
Germany
Prior art keywords
corrosion
workpieces
welded
protected
welding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE19863620977
Other languages
German (de)
Other versions
DE3620977C2 (en
Inventor
Hans Meissner
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
Priority to DE19863620977 priority Critical patent/DE3620977A1/en
Publication of DE3620977A1 publication Critical patent/DE3620977A1/en
Application granted granted Critical
Publication of DE3620977C2 publication Critical patent/DE3620977C2/de
Granted 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/60—Preliminary treatment
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

In order to connect corrosion-protected workpieces rationally, it is proposed according to the invention to perform the connection by means of a laser weld and during the application of the corrosion protection means to cover the points to be connected and to protect the connection point against corrosion by means of sealing elements. As a result, subsequent corrosion protection treatment can be dispensed with.

Description

Die Erfindung bezieht sich auf ein Verfahren der im Oberbegriff des ersten Anspruchs angegebenen Art.The invention relates to a method in the preamble of the first claim specified Art.

Kraftfahrzeugkarosserien werden aus einer Vielzahl von vorgefer­ tigten Einzelteilen zusammengesetzt. Hierbei werden dann auch Einzelteile verwendet, die nicht direkt nach Ihrer Herstellung weiterverbaut werden, sondern bei denen zwischen deren Herstellung und dem Weiterverbauen einige Zeit verstreicht. Hierbei ist es dann notwendig, diese Teile gegen Korrosion zu schützen. Anderer­ seits ist es auch bekannt, daß fertiglackierte Werkstücke erst in Einbaulage mit anderen Einbauteilen verschweißt werden. Hierbei ist dann nach dem Einbau keine Möglichkeit der Korrosionsschutz­ maßnahme mehr gegeben, wenn man eine günstige Montagefolge einhalten will.Motor vehicle bodies are prefabricated from a large number individual parts put together. Here, too Items used that are not immediately after their manufacture continue to be built, but in those between their manufacture and some time elapses before further building. Here it is then necessary to protect these parts against corrosion. Other on the other hand, it is also known that finished painted workpieces only in Installation position to be welded to other installation parts. Here then there is no possibility of corrosion protection after installation measure given more if you have a favorable assembly sequence wants to comply.

Aufgabe der Erfindung ist es, ein Verfahren der eingangs genannten Art bereitzustellen, mit dem bearbeitete und korrosionsgeschützte Werkstücke einfach und problemlos verschweißt werden können. Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des ersten Anspruchs gelöst. Diese Lösung bietet den Vorteil, daß durch die Anwendung des Laserschweißverfahrens eine starre Verbindung der zu verschweißenden Werkstücke erreicht wird, ohne daß hierbei ein nachträglicher Korrosionsschutz vor­ gesehen werden muß. Der Korrosionsschutz an der Schweißstelle wird hierbei über das Dichtelement erzielt, das die Schweißstelle von außen umschließt. Damit ist eine nachträgliche Korrosions­ schutzbehandlung der verschweißten Teile nicht notwendig, so daß eine günstige Montagefolge und damit auch eine wirtschaftlich vertretbare Montagefolge eingehalten werden kann.The object of the invention is a method of the aforementioned Provide way with which machined and corrosion protected Workpieces can be welded easily and without problems. This object is achieved by the characterizing Features of the first claim solved. This solution offers the Advantage that by using the laser welding process a rigid connection of the workpieces to be welded is achieved without prior protection against corrosion must be seen. The corrosion protection at the welding point is achieved via the sealing element that the weld  encloses from the outside. This is a subsequent corrosion protective treatment of the welded parts is not necessary, so that a favorable assembly sequence and therefore also an economical one justifiable assembly sequence can be observed.

Durch die Weiterbildung nach Anspruch 2 wird der Vorteil erreicht, daß beim Auftragen des Korrosionsschutzes die freizulassenden Stellen nicht ausgespart werden müssen, sondern daß eine kosten­ günstige Art der Aufbringung des Korrosionsschutzes gewählt werden kann. Vor dem Verbinden muß dann nur das Abdeckmittel entfernt werden. Werden als Abdeckmittel Aufkleber, eine Fett­ schicht oder ein Seifenbelag verwendet, so kann ersterer ohne großen Aufwand einfach abgerissen, während die beiden letzteren Möglichkeiten durch einfaches Abwischen, evtl. mit einer Reini­ gungslösung, beseitigt werden können.The advantage achieved by the further development according to claim 2 that when the corrosion protection is applied, the ones to be released Jobs do not have to be left out, but cost one Favorable way of applying the corrosion protection can be. Then only the cover means has to be connected be removed. Are used as a masking sticker, a grease layer or a soap coating is used, the former can be used without great effort simply demolished while the latter two Possibilities by simply wiping, possibly with a Reini solution can be eliminated.

Als Dichtmittel sind alle geeigneten Dichtelemente vorstellbar, die während der Einsatzzeit der zu verbindenden Bauteile ihre Dicht­ wirkung aufrechterhalten und während des Schweißvorganges nicht zerstört werden. Hierbei ist es ebenfalls von Vorteil, daß die durch die Laserschweißung in das Bauteil eingebrachte Wärmemenge sich örtlich beschränken läßt, so daß das Dichtelement hierbei nicht beschädigt wird. Je nach den zu verschweißenden Bauteilen können diese zur Aufnahme des Dichtelementes speziell ausgebildet sein. Vorstellbar sind Sicken, Vertiefungen, Rippen etc. zur Aufnahme des Dichtelementes.All suitable sealing elements are conceivable as sealants their sealing during the period of use of the components to be connected Maintain the effect and not during the welding process be destroyed. It is also advantageous that the amount of heat introduced into the component by laser welding can be limited locally, so that the sealing element here is not damaged. Depending on the components to be welded can be specially designed to accommodate the sealing element be. Beads, recesses, ribs, etc. are conceivable Inclusion of the sealing element.

Claims (2)

1. Verfahren zum Verschweißen vorbearbeiteter und korrosionsge­ schützter Werkstücke, insbesondere lackierter Werkstücke, dadurch gekennzeichnet, daß die zu verschweißenden Stellen vom Korrosionsschutz bei dessen Auftragung ausgespart, anschließend ein die zu erzeugende Schweißnaht umschließendes Dichtmittel auf die zu verbindenden Teile aufgebracht wird und dann die Schweißung mittels Laserstrahl durchgeführt wird.1. A method for welding pre-machined and corrosion protected workpieces, in particular painted workpieces, characterized in that the areas to be welded are spared by the corrosion protection when it is applied, then a sealant which surrounds the weld seam to be produced is applied to the parts to be connected and then the welding is carried out by means of Laser beam is carried out. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß vor dem Auftragen der Korrosions­ schutzschicht die zu verschweißenden Stellen abgedeckt werden.2. The method according to claim 1, characterized in that before the application of the corrosion protective layer covered the areas to be welded will.
DE19863620977 1986-06-23 1986-06-23 Method for welding processed and corrosion-protected workpieces Granted DE3620977A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19863620977 DE3620977A1 (en) 1986-06-23 1986-06-23 Method for welding processed and corrosion-protected workpieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863620977 DE3620977A1 (en) 1986-06-23 1986-06-23 Method for welding processed and corrosion-protected workpieces

Publications (2)

Publication Number Publication Date
DE3620977A1 true DE3620977A1 (en) 1988-01-14
DE3620977C2 DE3620977C2 (en) 1990-04-05

Family

ID=6303505

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863620977 Granted DE3620977A1 (en) 1986-06-23 1986-06-23 Method for welding processed and corrosion-protected workpieces

Country Status (1)

Country Link
DE (1) DE3620977A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289293A (en) * 1963-02-06 1966-12-06 Torsten Stenquist Ingerjors Fa Procedure for welding a joint and protecting the joint and adjacent metal surfaces against rust and corrosion
DE2701427A1 (en) * 1976-01-20 1977-07-21 Emmanuel Edouard Victor Saurin METHOD OF MANUFACTURING A PRESERVING CAN AND DEVICE FOR CARRYING OUT THIS PROCESS
EP0027707A1 (en) * 1979-10-20 1981-04-29 METAL BOX p.l.c. Method for preparing thin metal sheet for welding
DE3407417A1 (en) * 1984-02-29 1985-09-05 Hoesch Ag, 4600 Dortmund Method and apparatus for welding the longitudinal edge of a can shell

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289293A (en) * 1963-02-06 1966-12-06 Torsten Stenquist Ingerjors Fa Procedure for welding a joint and protecting the joint and adjacent metal surfaces against rust and corrosion
DE2701427A1 (en) * 1976-01-20 1977-07-21 Emmanuel Edouard Victor Saurin METHOD OF MANUFACTURING A PRESERVING CAN AND DEVICE FOR CARRYING OUT THIS PROCESS
EP0027707A1 (en) * 1979-10-20 1981-04-29 METAL BOX p.l.c. Method for preparing thin metal sheet for welding
DE3407417A1 (en) * 1984-02-29 1985-09-05 Hoesch Ag, 4600 Dortmund Method and apparatus for welding the longitudinal edge of a can shell

Also Published As

Publication number Publication date
DE3620977C2 (en) 1990-04-05

Similar Documents

Publication Publication Date Title
DE19532407A1 (en) Catalytic converter includes catalyst brick support with protective barrier strip
DE2009122A1 (en) Process for the tight mechanical connection of the components of a cooler
DE19527613A1 (en) Method for production of vehicle structure with hollow space - involves space limited by at least two parts of vehicle structure and forming container for receiving gases or fluids
DE3620977C2 (en)
DE10012325C1 (en) Method for finishing a wheel for a motor vehicle by creating different acting surfaces of surfaces of the wheel that are offset from one another by an edge
DE69321223T2 (en) Process for painting ship hull structures or the like
DE19730560A1 (en) Process for making an adhesive bond
DE3613274C2 (en)
DE4011320C2 (en) Process for treating the edges of stamped, pressed or cut metal parts
DE102012003316B3 (en) Method for applying anticorrosion fluid to chassis areas under front fender of motor vehicle, involves pivoting front edge of door in direction of A-pillar so that barrier is formed against escape of anticorrosion fluid
EP0369138A3 (en) Process and device for washing vehicles
DE19953760C1 (en) Process for soldering workpieces together comprises applying a layer of solder to the joining surfaces, forming a lattice film on a surface, bringing the workpieces together, removing the film and joining the workpieces using pressure
DE3222766C2 (en)
DE2250908A1 (en) BUMPER FOR VEHICLES
DE10223329B4 (en) Method for frontally joining a hollow profile to another profile for a frame structure of a vehicle body
WO1990004687A1 (en) A method of securing elastomeric or insulating materials and elastomer sections and protective components usable in implementing the method
DE102006034976A1 (en) Vehicle body with KTL-coated aluminum die-cast spring support
DE102008027169A1 (en) Chassis component for motor vehicle, comprises hollow body made of corrosion susceptible material, which has cavity, where cavity is closed in fluid-proof and moisture-proof manner
DE370133C (en) Process for the execution of tinning and leadings according to the metal spraying process
DE720338C (en) Process for protecting the unprotected cut edges of metal sheets, tapes or the like, the surfaces of which are coated with a layer of noble metal, by build-up welding
EP0060314A1 (en) Process for decontaminating objects
DD286189A5 (en) PROTECTIVE AGAINST HOLES OR FINISHING AGAINST DECOMPOSITION IN THE HEAT TREATMENT OF COMPONENTS
DE3638522C2 (en)
EP0233955B1 (en) Protection of walls highly endangered of being contaminated by mounting of plastic foils
DE2854180A1 (en) Spot welding of sheet metals or profiled structures - where deformable seal is placed between joint surfaces prior to welding so watertight joints are obtd.

Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee