Abstract
Selective laser sintering (SLS) is currently recognized as a leading process in the new field of solid freeform fabrication (SFF). SLS extends the applications to machinery and automobiles due to various employing materials. In order to develop more elaborate and speedy system for fabricating large objects compared to existing SLS, this study employs a new selective dual-laser sintering (SDLS) process. It contains three-axis dynamic focusing scanner system for scanning large area instead of the existing f θ lens used in commercial SLS. The optimal fabrication parameters such as sintering temperature, laser beam power and layer thickness should be determined when sintering polymer and metal powder. In this paper, we will address methods for the effective laser scanning path generation, the suitable temperature and the accurate z-axis control. Also, experiments have been performed to evaluate the effect of fabrication parameters on process and to fabricate the various 3D objects using polymer.
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