@inproceedings{WildenBergmannReichetal.2007, author = {Wilden, J. and Bergmann, J. P. and Reich, S. and Neuw{\"o}hner, P. and Goecke, Sven-Frithjof}, title = {Grundlegende Untersuchungen zum flussmittelfreien L{\"o}ten von Leichtmetall-Material-Mix Konstruktionen}, series = {In: Hart- und Hochtemperaturl{\"o}ten und Diffusionsschweißen : Vortr{\"a}ge und Posterbeitr{\"a}ge des 8. internationalen Kolloquiums in Aachen vom 19. bis 21. Juni 2007. - D{\"u}sseldorf : DVS-Verl., 2007. - (DVS-Berichte ; 243). - ISBN 978-3-87155-799-6}, booktitle = {In: Hart- und Hochtemperaturl{\"o}ten und Diffusionsschweißen : Vortr{\"a}ge und Posterbeitr{\"a}ge des 8. internationalen Kolloquiums in Aachen vom 19. bis 21. Juni 2007. - D{\"u}sseldorf : DVS-Verl., 2007. - (DVS-Berichte ; 243). - ISBN 978-3-87155-799-6}, pages = {176 -- 182}, year = {2007}, language = {de} } @inproceedings{WildenBergmannReichetal.2007, author = {Wilden, J. and Bergmann, J. P. and Reich, S. and Neuw{\"o}hner, P. and Goecke, Sven-Frithjof}, title = {Basic investigations about the flux-free soldering of multi-material-mix lightweight constructions}, series = {In: Hart- und Hochtemperaturl{\"o}ten und Diffusionsschweißen : Vortr{\"a}ge und Posterbeitr{\"a}ge des 8. Internationalen Kolloquiums in Aachen vom 19. bis 21. Juni 2007. - Als Ms. gedr. - D{\"u}sseldorf : DVS-Verl., 2007. - (DVS-Berichte ; 243). - ISBN 978-3-87155-799-6}, booktitle = {In: Hart- und Hochtemperaturl{\"o}ten und Diffusionsschweißen : Vortr{\"a}ge und Posterbeitr{\"a}ge des 8. Internationalen Kolloquiums in Aachen vom 19. bis 21. Juni 2007. - Als Ms. gedr. - D{\"u}sseldorf : DVS-Verl., 2007. - (DVS-Berichte ; 243). - ISBN 978-3-87155-799-6}, pages = {176 -- 182}, year = {2007}, language = {en} } @inproceedings{WildenBergmannDollesetal.2006, author = {Wilden, J. and Bergmann, J. P. and Dolles, M. and Reich, S. and Fernandet, S. and Goecke, Sven-Frithjof}, title = {Low temperature brazing of zinc coated steel and steel/aluminium joints by setting ZnAl-alloys as brazing material}, series = {In: Brazing and soldering : proceedings of the 3rd International Brazing and Soldering Conference, April 24 - 26, 2006, Crowne Plaza Riverwalk Hotel, San Antonio, Texas, USA / sponsored by ASM International, the Materials Information Society; AWS, [American Welding Society]. Ed. by John J. Stephens ... - Materials Park, Ohio: ASM Internat., 2006. - ISBN 0-87170-838-8}, booktitle = {In: Brazing and soldering : proceedings of the 3rd International Brazing and Soldering Conference, April 24 - 26, 2006, Crowne Plaza Riverwalk Hotel, San Antonio, Texas, USA / sponsored by ASM International, the Materials Information Society; AWS, [American Welding Society]. Ed. by John J. Stephens ... - Materials Park, Ohio: ASM Internat., 2006. - ISBN 0-87170-838-8}, pages = {32 -- 39}, year = {2006}, language = {en} } @article{BergmannWildenReichetal.2009, author = {Bergmann, J. P. and Wilden, J. and Reich, S. and Goecke, Sven-Frithjof}, title = {Methods and solutions for joining plates made from different metals using voltaic arc welding}, series = {In: Welding International 23 (2009) 12, pp 895-903}, journal = {In: Welding International 23 (2009) 12, pp 895-903}, issn = {0950-7116}, doi = {10.1080/09507110902843289}, pages = {895 -- 903}, year = {2009}, abstract = {For some years now, the light engineering sector has been in search of welding and/or joining technologies allowing high-speed processing at low temperatures. This way, damage to galvanized coating, for example in the case of steels, could be avoided or significantly reduced. Damage to the galvanized coating represents an outwardly visible phenomenon that can have a negative impact on the component's corrosion resistance. On the other hand, from the metallurgical viewpoint, controlling heat input represents an important way to solve the problems associated with heat joining of metals with incomplete solid-state solubility. The formation of fragile intermetallic phases during cooling, for example, occurs with aluminium/steel or aluminium/titanium. The process and the correct choice of filler materials are key points for the success of the joining method. In the case of the combination of aluminium and steel, zinc represents a suitable filler material, for example for brazing. The melting temperature is around 420°C and the wettability, with regard to galvanized steel, is favoured by the zinc layer, while on the aluminium part, it is possible to avoid the use of flux, thanks to the activating action of the voltaic arc. However, the low melting and vaporization temperatures of zinc make even 'short arc' processing rather difficult. Only new developments in electrical sources for welding, and in particular new processes, offer the possibility of reducing the heat input by modifying the 'short arc' process. The difficulties described are also valid for the combination of titanium and aluminium, and are associated with the formation of phases such as Ti x A1 y . Again in this case, this paper will present a strategy for joining sheets less than 2 mm thick. In the past years, an increasing number of strategies to join zinc-coated steels can be observed. Brazing represents a profitable way to join zinc-coated steels at low temperatures, reducing or avoiding zinc evaporation. In order to completely avoid damaging zinc coating, the set of ZnAl-f{\`i}llers was already investigated for laser brazing of zinc-coated steels as well as for joining steel with aluminium. Furthermore, thanks to new developments in arc wire technology, ZnAl-electrodes can be used for MIG-brazing as well. In this case, the conventional short arc, which normally does not allow brazing with zinc wires as eruption-like evaporation occurs, is modified and controlled. The drop formation on the wire tip, the metal transfer, and the heat input can be controlled and modified very precisely, so that processing of filler material can be performed easily for thin sheets (till 0.8-1.5 mm) and at low-processing speed, below 0.3-0.4 m/min. The control of the heat input occurs due to abruptly reducing the current after short arc. The disadvantages connected with a lower heat input in the base material are a restricted wetting behaviour of the zinc pool on the base material and the low-brazing speed due to a very high cooling rate. The focus of the presented investigation is the development of strategies, in order to enhance process conditions for brazing sheets of zinc-coated steels and aluminium.}, language = {en} } @inproceedings{WildenBergmannReichetal.2006, author = {Wilden, J. and Bergmann, J. P. and Reich, S. and Veron, F. and M{\"o}ller, L. and Goecke, Sven-Frithjof}, title = {Methoden und Strategien zum flussmittelfreien F{\"u}gen von Mischverbindungen durch Kombination der geregelten Lichtbogentechnik und der Lasertechnik}, series = {In: Schweißen und Schneiden 2006 : Vortr{\"a}ge der gleichnamigen Großen Schweißtechnischen Tagung in Aachen vom 20. bis 22. September 2006 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., D{\"u}sseldorf. - D{\"u}sseldorf : Verl. f{\"u}r Schweißen und Verwandte Verfahren, DVS-Verl., 2006. - (Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren: DVS-Berichte ; Bd. 240). - ISBN 3-87155-699-8 ; 978-3-87155-699-9}, booktitle = {In: Schweißen und Schneiden 2006 : Vortr{\"a}ge der gleichnamigen Großen Schweißtechnischen Tagung in Aachen vom 20. bis 22. September 2006 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., D{\"u}sseldorf. - D{\"u}sseldorf : Verl. f{\"u}r Schweißen und Verwandte Verfahren, DVS-Verl., 2006. - (Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren: DVS-Berichte ; Bd. 240). - ISBN 3-87155-699-8 ; 978-3-87155-699-9}, pages = {120 -- 125}, year = {2006}, language = {de} } @inproceedings{GoeckeBergmannWitte2012, author = {Goecke, Sven-Frithjof and Bergmann, J. P. and Witte, K.-H.}, title = {Steigerung der Ressourceneffizienz des MSG-Schweißens}, series = {In: DVS Congress 2012 : Große Schweißtechnische Tagung, DVS-Studentenkongress ; Vortr{\"a}ge der Veranstaltungen in Saarbr{\"u}cken am 17. und 18. September 2012 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren. - D{\"u}sseldorf : DVS Media, 2012. - (DVS-Berichte / DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., ISSN 0418-9639 ; 286). - ISBN 3-87155-593-2, 978-3-87155-593-0}, booktitle = {In: DVS Congress 2012 : Große Schweißtechnische Tagung, DVS-Studentenkongress ; Vortr{\"a}ge der Veranstaltungen in Saarbr{\"u}cken am 17. und 18. September 2012 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren. - D{\"u}sseldorf : DVS Media, 2012. - (DVS-Berichte / DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., ISSN 0418-9639 ; 286). - ISBN 3-87155-593-2, 978-3-87155-593-0}, pages = {263 -- 264}, year = {2012}, language = {de} } @inproceedings{GoeckeBergmannWitte2012, author = {Goecke, Sven-Frithjof and Bergmann, J. P. and Witte, K.-H.}, title = {Die Effizienzfabrik - Schwerpunkte und Analysem{\"o}glichkeiten aus Sicht der Schweißtechnik zur ressourceneffizienten Fertigung}, series = {In: DVS Congress 2012 : Große Schweißtechnische Tagung, DVS-Studentenkongress ; Vortr{\"a}ge der Veranstaltungen in Saarbr{\"u}cken am 17. und 18. September 2012 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren}, booktitle = {In: DVS Congress 2012 : Große Schweißtechnische Tagung, DVS-Studentenkongress ; Vortr{\"a}ge der Veranstaltungen in Saarbr{\"u}cken am 17. und 18. September 2012 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren}, publisher = {DVS-Media}, address = {D{\"u}sseldorf}, isbn = {978-3-87155-593-0}, pages = {263 -- 264}, year = {2012}, language = {de} }