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Proceedings Paper

A model for the microfabrication with selective laser sintering metal powders
Author(s): Canfu Yue; Jimin Chen; Tiechuan Zuo
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Paper Abstract

There are many micro-fabrication technologies. Some micro-components can be fabricated by selective laser sintering (SLS). When selective laser sintering metal powders is used to produce micro-components, there are numbers of factors which will influence final result, such as laser wavelength, laser power, diameter of laser beam, scanning speed, particle size and materials etc. These factors are not single but interfere with each other. The change of one factor will greatly affect the character of final micro-components (such as width of scanning track , dimension error, component hardness ,etc). In selective laser sintering metal powders, many experiments are needed in order to get the optimum process parameters. However, this will cost much time and money. Moreover in later process, new experiments will be needed in order to get the optimum process parameters due to the change of one factor. Many models about selective laser sintering metal powders have been investigated in the past. Nevertheless, these models are about the interaction of laser and metal powders, and the physical and thermal response to the initial condition. They are provided for the macro-fabrication. No model can be applied in the micro-domain, and no one aims at the influence of these factors on the character of the final micro-component. In this paper a numerical model about the relation of these factors and the character of final micro-components is provided to minimize the number of experiments. This model will include the major factors of SLS in micro-domain, and through such a model we can deduce the numerical value of optimum process parameters from final micro-component character instead of making a lot of process experiments. Therefore the cost of micro-fabrication with SLS techniques will be greatly reduced.

Paper Details

Date Published: 30 December 2004
PDF: 8 pages
Proc. SPIE 5641, MEMS/MOEMS Technologies and Applications II, (30 December 2004); doi: 10.1117/12.573514
Show Author Affiliations
Canfu Yue, Beijing Univ. of Technology (China)
Jimin Chen, Beijing Univ. of Technology (China)
Tiechuan Zuo, Beijing Univ. of Technology (China)

Published in SPIE Proceedings Vol. 5641:
MEMS/MOEMS Technologies and Applications II
Zhichun Ma; Guofan Jin; Xuyuan Chen, Editor(s)

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