Abstract
Laser cladding, laser alloying, and laser free-form manufacturing are promising techniques where a laser beam is frequently used in conjunction with a coaxial powder jet for surface treating or rapid manufacturing. In the present work, a computational model was developed and used to simulate several experimental setups in order to optimize the processing conditions. More specifically, the model was used to calculate the distribution of particles temperature and the transmitted laser beam power as a function of the position of the origin of the powder jet in relation to the converging lens that focuses the laser beam. Two cases were analyzed, the first assuming that the powder density varies with the inverse of the square of the distance, and the second one considering a Gaussian powder density distribution. The intensity distribution in the laser beam was assumed to be Gaussian. In the present work, it was shown that when the characteristic parameters of the laser beam and of the powder jet are kept constant, the distance between the lens and the powder origin determines the particles temperature distribution and the laser beam attenuation and it is an important aspect in the optimization of energy transfer in the process.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.