ICALEO 2009 Paper #1805 (Prevention of Porosity by Oxygen in Partial Penetration Laser and Laser-GMA Hybrid Welding)
Prevention of Porosity by Oxygen in Partial Penetration Laser and Laser-GMA Hybrid Welding
Authors:
Susumu Tsukamoto, National Institute for Materials Science; Tsukuba, Ibaraki Japan
Lin Zhao, National Institute for Materials Science; Tsukuba Japan
Goro Arakane, National Institute for Materials Science; Tsukuba Japan
Tomohiro Sugino, Ihi Corp.; Yokohama Japan
Presented at ICALEO 2009
Prevention of the porosity has been attempted in partial penetration laser and laser/arc hybrid welding of heavy section steel plates. Bead on plate welding was carried out on 0.10C-0.30Si-1.33Mn steel (JIS SM490A) using 7 kW fibre laser and pulsed GMA. Laser power modulatio...$28.00
ICALEO 2009 Paper #1804 (High-power Fiber Laser Butt Welding of Thick High-strength Steel Plate using Sensing System with Hot Wire)
High-power Fiber Laser Butt Welding of Thick High-strength Steel Plate using Sensing System with Hot Wire
Authors:
Terumasa Onishi, JWRI; Ibaraki City, Osaka Japan
Masami Mizutani, Jwri; Ibaraki City Japan
Yousuke Kawahito, Jwri; Ibaraki City Japan
Seiji Katayama, Jwri; Ibaraki City Japan
Presented at ICALEO 2009
Welding of thick high-strength steel plates without preheating or post-heating is expected in many industries. A high-power and high-brightness fiber laser is promising as one of the desirable heat sources for high-speed and deep-penetration welding. However, such a small beam spot has a low gap tolerance for butt welding. In this study, theref...$28.00
ICALEO 2009 Paper #1803 (Short Focal Length Scanner,Fiber Laser Welding Of Stainless Steel Sheets And Tubular Products)
Short Focal Length Scanner,Fiber Laser Welding Of Stainless Steel Sheets And Tubular Products
Authors:
Mikko Vänskä, Lappeenranta University of Technology / Outokumpu Stainless Tubular Products Oy Ab; Pietarsaari Finland
Veli Kujanpää, Lappeenranta University of Technology / VTT Industrial Systems; Lappeenranta Finland
Elin Westin, Outokumpu Stainless Ab, Avesta Research Center; Avesta Sweden
Terho Torvinen, Outokumpu Stainless Tubular Products Oy Ab; Pietarsaari Finland
Presented at ICALEO 2009
The fiber laser has generally better beam quality than the CO2-laser. This would normally be a positive effect, but also it causes limitations. Welding of join...$28.00
ICALEO 2009 Paper #1802 (Influence of Oxygen on Weld Geometry in Fibre Laser Welding)
Influence of Oxygen on Weld Geometry in Fibre Laser Welding
Authors:
Lin Zhao, National Institute for Materials Science; Tsukuba Japan
Susumu Tsukamoto, National Institute for Materials Science; Tsukuba Japan
Goro Arakane, National Institute for Materials Science; Tsukuba Japan
Tomohiro Sugino, Ihi Corp.; Yokohama Japan
Presented at ICALEO 2009
Oxygen can significantly increase the penetration depth in arc welding. It is caused by change in the Marangoni flow direction from outward to inward with increasing the oxygen content. Increase in the penetration depth by oxygen was also reported in laser welding by some researchers, but the mechanism is still uncl...$28.00
ICALEO 2009 Paper #1801 (Cover Glass Influence on High Power Fiber Laser Induced Focus Shift)
Cover Glass Influence on High Power Fiber Laser Induced Focus Shift
Authors:
Daniel Reitemeyer, BIAS - Bremer Institut fuer angewandte Strahltechnik GmbH; Bremen Germany
Thomas Seefeld, BIAS - Bremer Institut fuer angewandte Strahltechnik GmbH; Bremen Germany
Frank Vollertsen, BIAS - Bremer Institut fuer angewandte Strahltechnik GmbH; Bremen Germany
Jean Pierre Bergmann, Jenoptik Automatisierungstechnik GmbH; Jena Germany
Presented at ICALEO 2009
The condition of the optics of a processing head is an influencing factor on the focus stability at laser beam welding with high brilliance laser beam sources. The small percentage of laser light absorbed in the o...$28.00
ICALEO 2009 Paper #1709 (Three-Dimensional Texturing and Patterning of Woven Textiles using Purpose Designed Fabric Structures)
Three-Dimensional Texturing and Patterning of Woven Textiles using Purpose Designed Fabric Structures
Authors:
Janette Matthews, Loughborough University; Loughborough Great Britain
Kerry Walton, Loughborough University; Loughborough Great Britain
John Tyrer (Presenter not author), Loughborough University; -
Presented at ICALEO 2009
Laser processing of textile substrates is embedded in manufacturing systems for cutting and surface patterning through marking. A number of challenges exist with the processing of natural fibres and natural fibre blends such as cashmere, lambs wool and silk. This paper shows how the response of a luxury textile may be favourably influence...$28.00
ICALEO 2009 Paper #1708 (Precision Cutting & Drilling Metals with a Fiber Laser Marker)
Precision Cutting & Drilling Metals with a Fiber Laser Marker
Authors:
Hongqiang Chen, Miyachi Unitek Corporation; Pasadena CA USA
Geoff Shannon, Miyachi Unitek Corporation; Monrovia CA USA
Presented at ICALEO 2009
Certain fiber laser markers with the necessary peak powers and pulse parameter flexibility offer a unique cost effective system for precision cutting and drilling. It can provide dimensional cut repeatability to sub 10 microns, cut or drill material up to 0.5mm with minimal to no burring, and offer multi axis motion options. The material removal mechanism of the new process in relation to pulse parameters is described, along with examples of high quality cutting and dril...$28.00
ICALEO 2009 Paper #1707 (Study on the Characteristics of Debris and Hole Diameter in Laser Drilling of Thick Alumina Ceramics)
Study on the Characteristics of Debris and Hole Diameter in Laser Drilling of Thick Alumina Ceramics
Authors:
Yinzhou Yan, Institute of Laser Engineering, Beijing University of Technology; Beijing Peoples Republic of China
Lingfei Ji, Institute of Laser Engineering, Beijing University of Technology; Beijing Peoples Republic of China
Yong Bao, Institute of Laser Engineering, Beijing University of Technology; Beijing Peoples Republic of China
Yijian Jiang, Institute of Laser Engineering, Beijing University of Technology; Beijing Peoples Republic of China
Presented at ICALEO 2009
Characterizations of debris and hole diameter on a 4.4 mm alumina ceramic which ...$28.00
ICALEO 2009 Paper #1705 (Enhancing the Quality and Productivity of Laser Drilling by Changing Process Gas Parameters While Processing)
Enhancing the Quality and Productivity of Laser Drilling by Changing Process Gas Parameters While Processing
Authors:
Jens Dietrich, Lehrstuhl fuer Lasertechnik; 52074 Aachen Germany
Mihael Brajdic, Lehrstuhl Fuer Lasertechnik; 52074 Aachen Germany
Sven Engbers, Lehrstuhl Fuer Lasertechnik; -
Leonhard Klinkmueller, Lehrstuhl Fuer Lasertechnik; 52074 Aachen Germany
Ingomar Kelbassa, Lehrstuhl Fuer Lasertechnik; 52074 Aachen Germany
Presented at ICALEO 2009
When drilling with laser radiation the choice of the process gas and the pressure must be determined as process gas parameters. Choosing the right process gas parameters in order to achieve ...$28.00
ICALEO 2009 Paper #1704 (Oxide Formation in Acute Laser Percussion Drilled Holes in Single Crystal Nickel Superalloy)
Oxide Formation in Acute Laser Percussion Drilled Holes in Single Crystal Nickel Superalloy
Authors:
Stephen Leigh, Manchester University; Manchester Great Britain
Kursad Sezer, Manchester University; Manchester Great Britain
Lin Li, Manchester University; Manchester Great Britain
Andrew Pinkerton, -; -
Clive Grafton-Reed, Rolls-Royce Plc; Derby Great Britain
Martyn Cuttell, Rolls-Royce Plc; Derby Great Britain
Presented at ICALEO 2009
One industrial application of laser drilling is the production of cooling holes at acute angles in nickel superalloy single crystal material. However laser drilled holes are inherently associated ...$28.00
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