TY - CONF A1 - Brunner-Schwer, C. A1 - Rethmeier, Michael T1 - Laser-Plasma-Auftragschweißen als hybrides Beschichtungsverfahren für hohe Auftragsraten mit geringer thermischer Belastung N2 - Gut kombiniert: Laser-Plasma-Auftragschweißen Für den Schutz vor starkem abrasiven Verschleiß (Panzern) oder vor korrosiven Medien (Plattieren) sowie für das Auftragen einer Pufferlage können das Laser-Pulver-Auftragschweißen oder das Plasma-Pulver-Auftragschweißen zum Einsatz kommen. Während das Laser-Pulver-Auftragschweißen eine geringe thermische Belastung verspricht, ermöglicht das Plasma-Pulver-Auftragschweißen hohe Auftragraten. Wissenschaftler des Fraunhofer IPK erarbeiten neuartige Verfahrenskombinationen und Düsenkonzepte, die die jeweiligen Vorteile dieser bestehenden Verfahren vereinen und somit eine hohe Qualität und Effizienz garantieren. So kann beispielsweise die punktgenaue Energie der Laserstrahlung den Plasmalichtbogen stabilisieren und den Wärmeeintrag in das Bauteil besser kontrollieren. T2 - 5. PbA-Sitzung bei der GTV Verschleißschutz GmbH CY - Luckenbach, Germany DA - 21.03.2019 KW - Highspeed-plasma-laser-cladding KW - Wear resistance KW - NiCrBSi KW - Tungsten carbide KW - Deposition welding PY - 2019 AN - OPUS4-49243 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brunner-Schwer, C. A1 - Graf, B. A1 - Rethmeier, Michael T1 - Laser-Plasma-Hybrid-Cladding: Possibilities in the combination of arc and laser for deposition welding N2 - Plasma-Transferred-Arc (PTA) welding is a process that enables high deposition rates, but also causes increased thermal 9 load on the component. Laser based Direct Energy Deposition (DED) welding, on the other hand, achieves a high level of 10 precision and thus comparatively low deposition rates, which can lead to high processing costs. Combining laser and arc 11 energy aims to exploit the respective advantages of both technologies. 12 In this study, different possibilities of this process combination are presented using a PTA system and a 2 kW disk laser. 13 This includes the combination in a common process zone as a highspeed plasma laser cladding technology (HPLC), which 14 achieves process speeds of 10 m/min. Besides that it is being examined whether a pre-running plasma arc can be used to 15 coat difficult-to-weld rail steel with a carbon content of 0.8 % due to a preheating effect. Furthermore, a smoothing of the 16 coating by a plasma arc following the laser is investigated. T2 - LiM 2019 CY - Aachen, Germany DA - 25.06.2019 KW - Plasma-Transferred-Arc KW - Direct Energy Deposition KW - Highspeed plasma KW - Laser cladding KW - Deposition welding PY - 2019 AN - OPUS4-49247 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Brunner-Schwer, C. A1 - Petrat, T. A1 - Graf, B. A1 - Rethmeier, Michael T1 - Highspeed-plasma-laser-cladding of thin wear resistance coatings: A process approach as a hybrid metal deposition-technology JF - Vacuum N2 - Plasma-Transferred-Arc (PTA) welding is a process that enables high deposition rates, but also causes increased thermal load on the component. Laser metal deposition (LMD) welding, on the other hand, reaches a high level of precision and thus achieves comparatively low deposition rates, which can lead to high processing costs. Combining laser and arc energy aims to exploit the respective advantages of both technologies. In this study, a novel approach of this process combination is presented using a PTA system and a 2 kW disk laser. The energy sources are combined in a common process zone as a high-speed plasma laser cladding technology (HPLC), which achieves process speeds of 10 m/min at deposition rates of 6.6 kg/h and an energy per unit length of 39 J/mm. KW - Highspeed-plasma-laser-cladding KW - Wear resistance KW - Deposition welding KW - Tungsten carbide KW - NiCrBSi PY - 2019 DO - https://doi.org/10.1016/j.vacuum.2019.05.003 SN - 0042-207X VL - 166 SP - 123 EP - 126 PB - Elsevier AN - OPUS4-48294 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -