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    STUDIA CHEMIA - Issue no. 3 / 2012  
         
  Article:   POROSITY CHANGE BY RESIN IMPREGNATION IN STRUCTURES OBTAINED BY SELECTIVE LASER SINTERING TECHNOLOGY.

Authors:  OVIDIU NEMEŞ. 		 
       
         
  Abstract:  The manufacturing of the injection moulding tools is one of the most important industrial applications of Selective Laser Sintering (SLS) technology. The resulted porosity after post-processing stage in the oven (bronze infiltration) has an important influence over the mechanical properties of the resulted SLS metallic matrix. In order to reduce the porosity, a new post-processing method has been developed as compared to the classical one, consisting in a supplementary resin impregnation after the bronze infiltrating process. This new stage will have a significant influence not only onto the resulted porosity within the material structure, but also onto the chemical composition of the material. In consequence, the mechanical behaviour of the final parts will be significantly influenced.

Keywords: selective laser sintering, post-processing, porosity, epoxy resin. 		 
         
     
         
         
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