Laboratorija za Rapid Prototyping i Reverse Engineering

A. Topčić, Dž. Tufekčić, R. Šelo: "Influence of process parameters on roughness and texture of lateral flat surfaces of parts produced by Selective Laser Sintering process", 3rd International Conference on Advanced Technologies for Developing Countries, ATDC 2004, DAAAM International Vienna, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Proceedings, format A4, pages 193÷198 /6 pages /, June 2004, Split, Croatia, CIP 621 (063) (082) 007 (063) (082) 007 :001.892] (063) (082), ISBN 953-6114-68-2

Rapid Prototyping - RP processes, since it's appeared, fifteen year ago, on the commercial market take over more and more important role in manufacturing of prototypes and the ready-made parts. These processes with their characteristics enable to the modern manufacturer achieving and keeping its competition ability on the global market through short response on market impulse and as a result of above mentioned in shorter time to market.
Selective Laser Sintering – SLS is a RP technology that have place in many production systems. SLS systems with their characteristics are successful used for indirect and direct production of parts. However, process features, especial used materials, enable production of ready-made parts directly without post processing and that is big progress in Rapid Prototyping field.
Despite to the obvious precedence of SLS processes insufficient familiarity with essence of process and influence of process parameters on features of produced parts enable many researches on this domain. Those researches will enable to find efficient ways of production and increase quality of produced SLS parts.
In this field, quality of machined surfaces, many research activities were, or are being, carried out, especial in consider to, so called staircase effect (machined surfaces are under some angle on manufacturing direction-layer manufacturing) and on this area is achieve significant progress. Moreover, there are some researches activities of influence of building material particles size on quality of machined surfaces. However, analysis of SLS process parameters influence (scan velocity vs and laser power Pl) on quality of machined flat surfaces is dedicate relative small care although considering the process characteristics it is possible to expect significant influence on total quality of produced part, on its price as well as on the time need for its production.
In this paper is made an analysis for SLS process parameters influence (scan velocity vs and laser power Pl) on roughness and texture of lateral flat surfaces of parts produced by SLS process. The parts are produced using material DM50-V2 on machine EOSINT M250, producer EOS Münich, Germany.