| In this thesis, the SLS molding properties of some metal-base composite powders composed of metal powder mixed by several regularly used polymers' powder were studied, on the basis of which, a new SLS composite material made by 316 stainless steel powder mixed by epoxy powder was developed and produced. The molding technics and adherent mechanism of the material in SLS process was analyzed and studied, and the high temperature sintering technics of the green parts of the material was discussed as well. Furthermore, the high temperature sintering process, shrinking and deforming when sintering and strength after sintering of the green parts were also studied, and finally, the scheme of SLS molding and sintering of the composite powder was attained. Through experiments, the composite material was proved to be feasible and potential in SLS fabrication. |
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