Affiliation:
1. National Cheng-Kung University Institute of Manufacturing Engineering Taiwan
Abstract
A model of the process of cutting metal with a gas assisted CO2 laser beam has been derived with the principal objective of understanding the role of manufacturing parameters both from its kinetics and its chemistry. The model considers the cutting front as a surface phenomenon for reaction and absorption. An adjusting parameter, m, is introduced in this model to represent the absorptivity for different materials and different incident angles. The mass diffusion rate at the gas/solid boundary of the cutting front is included in this model to investigate the exothermic heat which will be released at the cutting front during the cutting process. The effects of oxide films, polarization, cut front shape, cutting speed and laser power have been analysed. The tendency of the experimental results from many previous researchers agrees with the prediction of these theoretical results. It is shown that very small levels of impurity in the oxygen would be expected to have a significant effect on the cutting performance.
Subject
Industrial and Manufacturing Engineering,Mechanical Engineering
Reference14 articles.
1. Laser Cutting
2. The Role of Oxidation in Laser Cutting Stainless and Mild Steel
3. Oxygen assisted laser cutting mechanism—a laminar boundary layer approach including the combustion process
4. Olsen F. O. Investigation in optimising the laser cutting process. In ASM Conference on Applications of Lasers in Materials Processing, Los Angeles, California, 24–26 January 1984.
Cited by
12 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献