• ICALEO 2008 Paper #1501 (Double-nozzle Control of a Subsonic Gas Flow in the Conditions of Gas-laser Cutting)

    Double-nozzle Control of a Subsonic Gas Flow in the Conditions of Gas-laser Cutting
    Authors:
    Anatoly Orishich, Institute of Theoretical and Applied Mechanics, Russian Academy of Sciences, Sib; Novosibirsk Russia
    Alexander Zaitsev, Itam Sb Ras; Novosibirsk Russia
    Oleg Kovalev, Itam Sb Ras; Novosibirsk Russia
    Peter Yudin, Itam Sb Ras; Novosibirsk Russia
    Victor Shulyatyev, Itam Sb Ras; Novosibirsk Saint Vincent
    Alexander Malikov, Itam Sb Ras; Novosibirsk Russia
    Presented at ICALEO 2008

    The peculiarities of subsonic jest in narrow channels geometrically similar to a laser cut have been studied experimentally and theoretically. To orga...

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  • ICALEO 2008 Paper #1502 (Simulation of Surface Profile Formation in Oxygen Laser Cutting of Mild Steel)

    Simulation of Surface Profile Formation in Oxygen Laser Cutting of Mild Steel
    Authors:
    G.V. Ermolaev, Khristianovich Institute of Theoretical and Applied Mechanics; Novosibirsk Russia
    O.B. Kovalev, Khristianovich Institute of Theoretical and Applied Mechanics; Novosibirsk Russia
    Presented at ICALEO 2008

    A physicomathematical model is proposed for the phenomenon of formation of periodic striations in oxygen laser cutting of mild steel sheets in 3-D case. Mechanism of roughness formation is assumed to be caused by a cyclic reaction of iron-oxygen combustion. The motion of boundaries occurs owing to metal melting under the action of focused laser radiation and the heterogeneous chemic...

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  • ICALEO 2008 Paper #1503 (Principles of Supersonic Oxygen Jet Forming for Lasox Cutting Process)

    Principles of Supersonic Oxygen Jet Forming for Lasox Cutting Process
    Authors:
    A.G. Malikov, Khristianovich Institute of Theoretical and Applied Mechanics; Novosibirsk Russia
    A.M. Orishich, Khristianovich Institute of Theoretical and Applied Mechanics; Novosibirsk Russia
    A.V. Zaitsev, Khristianovich Institute of Theoretical and Applied Mechanics; Novosibirsk Russia
    G.V. Ermolaev, Khristianovich Institute of Theoretical and Applied Mechanics; Novosibirsk Russia
    O.B. Kovalev, Khristianovich Institute of Theoretical and Applied Mechanics; Novosibirsk Russia
    V.B. Shulyatyev, Khristianovich Institute of Theoretical and Applied Mechanics; Novosibirsk Rus...

    $28.00

  • ICALEO 2008 Paper #1504 (The Energy Generated by the Oxidation Reaction during Laser-Oxygen Cutting of Mild Steel)

    The Energy Generated by the Oxidation Reaction during Laser-Oxygen Cutting of Mild Steel
    Authors:
    J. Powell, Lulea University; Lulea Sweden
    D. Petring, Fraunhofer-Institute for Laser Technology; Aachen Germany
    R.V. Kumar, Cambridge University; Cambridge Great Britain
    S.O. Al-Mashikhi, University of Nottingham; Nottingham Great Britain
    A.F.H. Kaplan, Lulea University; Lulea Sweden
    K.T. Voisey, University of Nottingham; Nottingham Great Britain
    Presented at ICALEO 2008

    Laser-oxygen cutting of mild steel is a widely used process. The energy input from the exothermic oxidation reaction contibutes a significant amount of energy. The a...

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  • ICALEO 2008 Paper #1505 (Smooth Particle Hydrodynamics (SPH) Modelling of Laser Cutting)

    Smooth Particle Hydrodynamics (SPH) Modelling of Laser Cutting
    Authors:
    Markus Gross, University of Cambridge; Cambridge Great Britain
    Presented at ICALEO 2008

    One of the major obstacles in the simulation of laser cutting is the wide span of length scales and the high velocities encountered. Additionally the melt breaks up into a fine spray or shower of droplets when exiting the kerf. Hence the scope for modelling this process with traditional finite volume or finite element methods is limited. In this paper the development of a Smooth Particle Hydrodynmaics (SPH) model for laser cutting is introduced. The principle foundations of the method are discussed and results of simulations of the melt ...

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  • ICALEO 2008 Paper #1506 (Studies in Increasing the Dynamic of Cutting Machines)

    Studies in Increasing the Dynamic of Cutting Machines
    Authors:
    Florian Bartels, Fraunhofer Iws; Dresden Germany
    Thomas Schwarz, Fraunhofer Iws; Dresden Germany
    Lothar Morgenthal, Fraunhofer Iws; Dresden Germany
    Eckhard Beyer, Fraunhofer Iws; Dresden Germany
    Presented at ICALEO 2008

    Cutting of sheet metal is a still strongly growing market which has especially changed with the new solid state lasers which fairly could raise up the cutting speed and the cutting edge quality. For using the capability of fibre or disc lasers with their excellent beam quality, their higher absorption in metal and the possibility of beam guidance by fibres, the dynamic of cuttin...

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  • ICALEO 2008 Paper #1507 (Fiber Laser Cutting of Stainless Steel in Non-Vertical Positions)

    Fiber Laser Cutting of Stainless Steel in Non-Vertical Positions
    Authors:
    Antti Salminen, Lappeenranta University of Technology; Lappeenranta Finland
    Tuomas Purtonen, Lappeenranta University of Technology; Lappeenranta Finland
    Presented at ICALEO 2008

    In the many fields of industry, stainless steel provides the best solution combining strength properties, corrosion resistance and good visual quality. The manufacturing of various pipe systems and components requires accurately cut holes and sections. Fiber lasers are providing a fast and affordable way to accomplish these demands. This paper examines fiber laser cutting of stainless steel in vertical and non-vertical positions. The ...

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  • ICALEO 2008 Paper #1508 (Laser Cutting of Structural Steel with High Beam Quality)

    Laser Cutting of Structural Steel with High Beam Quality
    Authors:
    Antti Salminen, Lappeenranta University of Technology; Lappeenranta Finland
    Veli Kujanp, Lappeenranta University of Technology; Lappeenranta Finland
    Zhenhua Xiao, Lappeenranta University of Technology; Lappeenranta Finland
    Presented at ICALEO 2008

    Laser cutting is one of the most widely used laser processes. It has great advantages in comparison to other thermal and mechanical cutting processes. Laser cutting made manufacturing of new type of products possible e.g. in case of parts requiring 3D cutting. The development of new lasers has brought new opportunities to be carried out with laser cutting. ...

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  • ICALEO 2008 Paper #1601 (In Situ Synthesis of Tic Particles on Low Carbon Steel by using Laser Cladding Technique)

    In Situ Synthesis of Tic Particles on Low Carbon Steel by using Laser Cladding Technique
    Authors:
    Ali Emamian, University of Waterloo; Kitchener-Waterloo ON Canada
    Amir Khajepour, University of Waterloo; Waterloo ON Canada
    Stephen Corbin, University of Waterloo; Waterloo ON Canada
    Presented at ICALEO 2008

    The present paper describes the effect of different TiC percentage and laser parameters on morphology, distribution of composite particles, and micro hardness of the clad. Pure Ti, graphite, and Iron with 325 mesh particle sizes were used for in situ laser cladding in automatic laser fabrication lab (ALFa) at the University of Waterloo, Canada. In situ laser claddin...

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  • ICALEO 2008 Paper #1602 (Laser Cladding with Integrated Surface Micro-Structures)

    Laser Cladding with Integrated Surface Micro-Structures
    Authors:
    Albert Grueninger, Laser Zentrum Hannover E.V.; Hanover Germany
    Nils Weidlich, Laser Zentrum Hannover e.V.; Hanover Germany
    Andreas Ostendorf, Laser Zentrum Hannover E.V.; Hanover Germany
    Dirk Herzog, Laser Zentrum Hannover E.V.; Hanover Germany
    Heinz Haferkamp, Laser Zentrum Hannover E.V.; Hanover Germany
    Presented at ICALEO 2008

    Conventionally, micro-structured surfaces are generated using material removal processes, e.g. laser ablation or machining. To eliminate this process step, a research project is dealing with the generation of micro-structures using a laser cladding proc...

    $28.00

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