Paper Title:
Simulation and Experimental Analysis of the Effect of Channel Width on Flow Field in Laser Cutting
  Abstract

A three-dimensional axial symmetrical model of laser cutting is established by adopting N-S equation in the paper, and numerical simulation is put up to analyze the flow field of assist gas in cutting channel. The investigation reveals the law about how channel width affects the dynamic characteristic of gas jet in the cutting process, and the distributions of pressure and velocity of gas jet with different channel widths are shown in the study. The study shows that the intensity of compressed wave and expanded wave in cutting channel declines remarkably with channel width increasing, and the kinetic energy at channel surface drops while the cutting quality is deteriorated. A taper nozzle with cone angle of 30°and a convergence nozzle comprised a parabola equation of are designed for the laser cutting experiment. The experimental results are given at the end of the paper.

  Info
Periodical
Materials Science Forum (Volumes 626-627)
Edited by
Dongming Guo, Jun Wang, Zhenyuan Jia, Renke Kang, Hang Gao, and Xuyue Wang
Pages
171-176
DOI
10.4028/www.scientific.net/MSF.626-627.171
Citation
X.J. Sheng, J. Hu, "Simulation and Experimental Analysis of the Effect of Channel Width on Flow Field in Laser Cutting", Materials Science Forum, Vols. 626-627, pp. 171-176, 2009
Online since
August 2009
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