ICALEO 2013 Paper #1402 (Measurement of Particle Density Distribution of Powder Nozzles for Laser Material Deposition)

Measurement of Particle Density Distribution of Powder Nozzles for Laser Material Deposition
Authors:
Stefan Mann, Fraunhofer Institute for Laser Technology ; Aachen Germany
Leonardo de Melo, Fraunhofer Institute for Laser Technology ILT; Aachen Germany
Peter Abels, Fraunhofer Institute for Laser Technology ILT; Aachen Germany
Presented at ICALEO 2013

The delivery of powder to the melt pool via the nozzle is a crucial element at laser material deposition. It has a major influence on the consumption of powder material and the quality of the coating layer. In order to ensure consistently high process stability and quality, it is necessary to check the powder gas stream a...

ICALEO 2013 Paper #1401 (Direct Metal Deposition of Functional Graded Material)

Direct Metal Deposition of Functional Graded Material
Authors:
Armando Yanez, Universidade da Coruna; Ferrol Spain
Jose M. Amado, Universidade Da CoruñA; Ferrol Spain
Javier N. Montero, Universidade Da CoruñA; Ferrol Spain
MaríA J. Tobar, Universidade Da CoruñA; Ferrol Spain
Presented at ICALEO 2013

Functional graded materials (FGMs) are a class of composite materials that have a continuous variation of properties from one point to another. FGMs are not new but they could be an approach for eliminating the sharp interface between clad and substrate in the laser cladding process. It is possible to relieve stress concentration appearing in these laminate...

ICALEO 2013 Paper #1307 (Effect of Shielding Gas Composition on Co2-Laser Welding Quality)

Effect of Shielding Gas Composition on Co2-Laser Welding Quality
Authors:
Jukka Siltanen, Rautaruukki Oyj; Hämeenlinna Finland
Ville-Matti Nurmela, Ruukki Metals Oy; Uusikaupunki Finland
Ilpo Maaranen, Ruukki Metals Oy; Uusikaupunki Finland
Sakari Tihinen, Ruukki Metals Oy; Raahe Finland
Jukka Komi, Ruukki Metals Oy; Raahe Finland
Jurgen Scholz, Linde AG; Unterschleissheim Germany
Jyrki Honkanen, Oy AGA Ab; Espoo Finland
Bo Williams, AGA Gas Ab Weldonova; Lidingo Sweden
Presented at ICALEO 2013

Shielding gas is significant cost factor for CO2-laser welding, especially if helium is used. Replacing a part ...

ICALEO 2013 Paper #1305 (Laser and Electron Beam Welding of 25 Mm Thick A516 Gr.70 Steel )

Laser and Electron Beam Welding of 25 Mm Thick A516 Gr.70 Steel
Authors:
James Chen, Natural Resources Canada; Hamilton USA
Andrew Laver, Natural Resources Canada; ON Canada
Renata Zavadil, Natural Resources Canada; ON Canada
Jie1 Liang, Natural Resources Canada; ON Canada
Wenyue Zheng, Natural Resources Canada; ON Canada
Presented at ICALEO 2013

The safe and effective storage and disposal of high level waste and spent fuel is a high priority for many countries worldwide. In order to store vitrified high level waste in steel canisters in a facility 500 m underground, welding process has to be developed for the closure of nuclear waste canis...

ICALEO 2013 Paper #1304 (Laser Beam Welding in Vacuum of Thick Plate Structural Steel)

Laser Beam Welding in Vacuum of Thick Plate Structural Steel
Authors:
Stefan Jakobs, Welding and Joining Institute, Rwth Aachen University; Aachen Germany
Simon Olschok, Welding and Joining Institute; Aachen Germany
Uwe Reisgen, Welding and Joining Institute; Aachen Germany
Presented at ICALEO 2013

Laser beam and electron beam welding methods are well established in the manufacturing industry. Each of the methods has specific advantages which are used for a large variety of application cases.

For some time now, laser beam welding in vacuum has experienced a renaissance. First tests about the topic were made in Japan as early as in the Eighties. The brilliant sol...

ICALEO 2013 Paper #1301 (Indirect Measurement of Keyhole Pressure Oscillations During Laser Deep Penetration Welding)

Indirect Measurement of Keyhole Pressure Oscillations During Laser Deep Penetration Welding
Authors:
Joerg Volpp, Bias Ggmbh; Bremen Germany
Daniel Freimann, Bias Ggmbh; Bremen Germany
Presented at ICALEO 2013

The laser deep penetration welding process is highly dynamic. Besides melt pool oscillations the keyhole geometry as well as the pressure inside the keyhole oscillate at high frequencies. Those keyhole oscillations are assumed to support the unwanted process pore formation. Due to limited technological possibilities a direct method for observing the pressure and radius oscillations inside the keyhole is not state of the art.

Based on an existing indirect measuring system ...

ICALEO 2013 Paper #1204 (Optimization of the Laser Direct Metal Deposition Process in 5-Axis Configuration.)

Optimization of the Laser Direct Metal Deposition Process in 5-Axis Configuration.
Authors:
Didier Boisselier, IREPA Laser; Illkirch France
Simon Sankare, Irepa Laser; Illkirch France
Presented at ICALEO 2013

The implementation of the continuous 5-axis configuration can push the limits of the Laser Direct Metal Deposition (LDMD) processes, particularly in terms of complexity of part to build. The inclination of the part growth axis makes it easier to follow the profile of the part. Although continuous 5-axis machining is well known nowadays, LDMD processes require a specific optimization. It depends on many parameters that need the implementation of smooth trajectories in order to ...

ICALEO 2013 Paper #1203 (Integrated Rapid 3D Mapping and Laser Additive Repair of Gas Turbine Engine Components)

Integrated Rapid 3D Mapping and Laser Additive Repair of Gas Turbine Engine Components
Authors:
Lijue Xue, National Research Council of Canada; London ON Canada
Yangsheng Li, National Research Council Canada; London ON Canada
Jianyin Chen, National Research Council Canada; London ON Canada
Shaodong Wang, National Research Council Canada; London ON Canada
Glen Campbell, National Research Council Canada; London ON Canada
Matt Donovan, United Technologies Aerospace Systems; West Des Moiness IA USA
Presented at ICALEO 2013

National Research Council Canada (NRC) have developed precision laser additive repair of worn gas turbine compone...

ICALEO 2013 Paper #1202 (Laser-Based Generation of Precise Functional Structures and Components)

Laser-Based Generation of Precise Functional Structures and Components
Authors:
Frank Brueckner, Fraunhofer IWS; Dresden Germany
Mirko Riede, Fraunhofer Iws Dresden; Dresden Germany
Thomas Finaske, Fraunhofer Iws Dresden; Dresden Germany
Steffen Nowotny, Fraunhofer Iws Dresden; Dresden Germany
Christoph Leyens, Fraunhofer Iws Dresden / Technische Universitaet Dresden; Dresden Germany
Eckhard Beyer, Fraunhofer Iws Dresden / Technische Universitaet Dresden; Dresden Germany
Presented at ICALEO 2013

Functionalization of surfaces as well as the precise generation of metallic components are increasingly required in specific applications...

ICALEO 2013 Paper #1201 (Laser-Based Fabrication With Ti- and Ni-Base Superalloys)

Laser-Based Fabrication With Ti- and Ni-Base Superalloys
Authors:
Christoph Leyens, Fraunhofer IWS; Dresden Germany
Frank Brueckner, Fraunhofer Iws; Dresden Germany
Thomas Finaske, Fraunhofer Iws; Dresden Germany
Steffen Nowotny, Fraunhofer Iws; Dresden Germany
Eckhard Beyer, Fraunhofer Iws; Dresden Germany
Sebastian Thieme, Tu Dresden; Dresden Germany
Presented at ICALEO 2013

Meanwhile laser-based technology of direct metal deposition is a well industrially established technique for precise coating tasks and additive manufacturing. By means of precise nozzle systems, suitable process equipment as well as well customized manufactu...