ICALEO 2007 Paper #210 (Weld Penetration and Welding Phenomena of Aluminum Alloy with High-Power Fiber Laser)
Weld Penetration and Welding Phenomena of Aluminum Alloy with High-Power Fiber Laser
Authors:
Hiroyuki Nagayama, Joining and Welding Research Institute (JWRI), Osaka University; Ibaraki Japan
Masami Mizutani, Joining and Welding Research Institute (JWRI), Osaka University; Ibaraki Japan
Yousuke Kawahito, Joining and Welding Research Institute (JWRI), Osaka University; Ibaraki Japan
Seiji Katayama, Joining and Welding Research Institute (JWRI), Osaka University; Ibaraki Japan
Presented at ICALEO 2007
In this research, 10 kW fiber laser welding was carried out on aluminum alloy A5083. The fiber laser bead-on-plate welding was performed on aluminum alloy to i...$28.00
ICALEO 2007 Paper #209 (New Application Possibilities for Fiber Laser Welding)
New Application Possibilities for Fiber Laser Welding
Authors:
Gunther G, Fraunhofer IWS; Dresden Germany
Berndt Brenner, Fraunhofer IWS; Dresden Germany
Eckhard Beyer, Fraunhofer IWS; Dresden Germany
Presented at ICALEO 2007
Due to their unique design, fiber lasers offer new possibilities in the field of laser welding. Especially their higher focusability is known to allow narrow and deep welds which help to increase weld performance and reduce heat input. But, as such beam sources are not yet common in industrial environments, their possibilities and main application fields are neither widely known nor fully assessed. Therefore typical weld parameters and applica...$28.00
ICALEO 2007 Paper #208 (Welding and Cutting of Copper with High Brightness Lasers)
Welding and Cutting of Copper with High Brightness Lasers
Authors:
Eckhard Beyer, Fraunhofer IWS; Dresden Germany
Peer Pfohl, Fraunhofer IWS; Dresden Germany
Patrick Herwig, Fraunhofer IWS; Dresden Germany
Ralf Imhoff, Fraunhofer IWS; Dresden Germany
Presented at ICALEO 2007
When using a fiber laser for the processing of copper or other high reflecting materials we have to take care of the back reflection. If we used a polarized laser with wave lengths in the range of 1 µm, it would be relatively easy to build up an optical diode to block optical feedbacks by using the Farrady isolator (rotator) or the Lambda/4 window. That system can also be used in orde...$28.00
ICALEO 2007 Paper #207 (Parametric Investigation of Microcladding by Fibre Laser of Stellite on Stainless Steel)
Parametric Investigation of Microcladding by Fibre Laser of Stellite on Stainless Steel
Authors:
Fernando Lusquiños, Universidade de Vigo; Vigo Spain
Antonio Riveiro, Universidad de Vigo; Vigo Spain
Rafael Comesaña, Universidad de Vigo; Vigo Spain
Félix Quintero, Universidade de Vigo; Vigo Spain
Juan Pou, Universidade de Vigo; Vigo Spain
Presented at ICALEO 2007
A systematic research on the capability of the laser surface cladding by a fibre laser assisted by pneumatic powder injection in order to coat stainless steel by a thin hard layer was carried out.
The high quality of the monomode fibre laser beam allowed us to produce clads with a ...$28.00
ICALEO 2007 Paper #206 (High Brightness Lasers in Cutting Applications)
High Brightness Lasers in Cutting Applications
Authors:
Thomas Himmer, Fraunhofer IWS; Dresden Germany
Thomas Pinder, University of Technology Dresden; Dresden Germany
Lothar Morgenthal, Fraunhofer IWS; Dresden Germany
Eckhard Beyer, Fraunhofer IWS, University of Technology Dresden; Dresden Germany
Presented at ICALEO 2007
Laser cutting machines with linear motor drives provide high contour accuracy and high cutting rates. Thus laser beam cutting has become increasingly competitive compared to mechanical precision cutting [1]. Since the several years, new laser beam sources are available for cutting. One of the promising solutions is cutting with fiber las...$28.00
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ICALEO 2007 Paper #202 (Focusing of High Power Single Mode Laser Beams)
Focusing of High Power Single Mode Laser Beams
Authors:
Axel Hess, Forschungsgesellschaft für Strahlwerkzeuge mbH (FGSW); Stuttgart Germany
Felix Abt, Forschungsgesellschaft F�R Strahlwerkzeuge Mbh (FGSW); Stuttgart Germany
Friedrich Dausinger, Forschungsgesellschaft F�R Strahlwerkzeuge Mbh (FGSW); Stuttgart Germany
Presented at ICALEO 2007
Newest developments in diode pumped solid state lasers brought up thin disk- and fibre lasers with beam qualities in the range of M² = 10 to M² = 1 at an output power of up to 2 kW. To achieve the appropriate power density distribu-tion for material processing, the laser beam has to be transformed by a lens system. When using...$28.00
ICALEO 2007 Paper #201 (What is the Best Choice for Laser Material Processing- Rod, Disk, Slab or Fiber?)
What is the Best Choice for Laser Material Processing- Rod, Disk, Slab or Fiber?
Authors:
Erwin Steiger, Erwin Steiger LaserService; Maisach Germany
Presented at ICALEO 2007
Laser material processing for industrial manufacturing applications is today a widely spread procedure for welding, cutting, marking and micro-machining. With the invent of new and alternative laser sources like the fiber laser discussions have emerged which of the solid-state laser systems - rod, disk, slab or fiber - is the best suited for all the known laser procedures. It will be shown on selected laser processed examples that the laser source itself is often not the decisive part for the final results. Material propert...$28.00
ICALEO 2007 Paper #2005 (Microstructures and Wear Resistance of Laser Surface Alloyed NiTi with High Mo Concentration)
Microstructures and Wear Resistance of Laser Surface Alloyed NiTi with High Mo Concentration
Authors:
H.C. Man, The Hong Kong Polytechnic University; Kowloon Hong Kong
Ng Ka Wai, The Hong Kong Polytechnic University; Shatin Hong Kong
T.M. Yue, The Hong Kong Polytechnic University; Kowloon Hong Kong
Presented at ICALEO 2007
Nickel Titanium alloys are a unique class of materials which exhibit shape memory and superelastic properties. The interest in this material for medical applications, such as surgical implants, has been steadily growing in recent years. In the present study, NiTi (55%Ni-45%Ti) SMA were surface alloyed with molybdenum using a continuous wave Nd-YAG la...$28.00
ICALEO 2007 Paper #2004 (Microstructure and Properties of Plasma and Laser Consolidated Chromium Oxide Coating)
Microstructure and Properties of Plasma and Laser Consolidated Chromium Oxide Coating
Authors:
Jovan Stanisic, University of Michigan; Dearborn MI USA
Pravansu Mohanty, University of Michigan; Dearborn MI USA
Jyoti Mazumder, University of Michigan; Ann Arbor MI USA
Presented at ICALEO 2007
Plasma sprayed chromium oxide coatings have been widely used due to their high corrosion and wear resistance. Although plasma spray process is economical to produce coatings due to higher deposition rates, the coatings are inherently porous and lack metallurgical bonding with the substrate. The focus of this work is to investigate the feasibility as well as characterize the resulting...$28.00
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