Thermochemical modeling of oxygen-assisted laser cutting

    Authors

    D. Espinal;A. Kar

    Comments

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    Abbreviated Journal Title

    J. Laser Appl.

    Keywords

    laser cutting; CO2 oxygen-assisted cutting; thermochemical modeling; IODINE LASER; Materials Science, Multidisciplinary; Optics; Physics, Applied

    Abstract

    A simple mathematical model is developed to relate kerf depth to laser power, laser scanning speed and kerf width during laser cutting. The model is based on a lumped parameter technique in which the overall energy balance is considered. The energy released during the chemical reaction between the material that is being cut and the assist gas is considered for oxygen-assisted cutting. Experiments were conducted using a carbon dioxide (CO2) laser to test the significance of the chemical reaction in the cutting process. The experiments conducted consist of cutting stainless steel using nitrogen as an inert assist gas, and the cutting of stainless steel using oxygen as a reactive assist gas. The cutting data between the two experiments are compared and used to demonstrate the scaling of the mathematical model. Oxygen increases the cut depth significantly compared to when nitrogen is used as an assist gas. (C) 2000 Laser Institute of America. [S1042-346X(00)00401-0].

    Journal Title

    Journal of Laser Applications

    Volume

    12

    Issue/Number

    1

    Publication Date

    1-1-2000

    Document Type

    Article

    Language

    English

    First Page

    16

    Last Page

    22

    WOS Identifier

    WOS:000085128900004

    ISSN

    1042-346X

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