The Optimization Design Study of Selective Laser Sintering Process Parameters on the Pro-Coated Sand Mold


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This paper presents experimental investigations on influence of important process parameters viz., laser power, scan speed, layer thickness, hatching space along with their interactions on dimensional accuracy of Selective Laser Sintering (SLS) processed pro-coated sand mold. It is observed that dimensional error is dominant along length and width direction of built mold. Optimum parameters setting to minimize percentage change in length and width of standard test specimen have been found out using Taguchi’s parameter design. Optimum process conditions are obtained by analysis of variance (ANOVA) is used to understand the significance of process variables affecting dimension accuracy. Scan speed and hatching space are found to be most significant process variables influencing the dimension accuracy in length and width. And laser power and layer thickness are less influence on the dimension accuracy. The optimum processing parameters are attained in this paper: laser power 11 W; scan speed 1200 mm/s; layer thickness 0.5 mm and hatching space 0.25 mm. It has been shown that, on average, the dimensional accuracy under this processing parameters combination could be improved by approximately up to 25% compared to other processing parameters combinations.



Edited by:

Qi Luo






R. Cheng et al., "The Optimization Design Study of Selective Laser Sintering Process Parameters on the Pro-Coated Sand Mold", Applied Mechanics and Materials, Vols. 55-57, pp. 853-858, 2011

Online since:

May 2011




[1] D. King, T. Tansey, Alternative materials for rapid tooling, J. Mater. Process. Technol. 121 (2002) 313–317.

[2] D.T. Pham, S.S. Dimov, F. Lacan, The rapidtool process: technical capabilities and applications, J. Eng. Manuf. 214 (No B2) (2000) 107–116.

[3] R. Wuensche, Using Direct Croning to Decrease the Cost of Small Batch Production, a special EUROMOLD 2000 Event in cooperation with Wohlers Associates, Frankfurt-Germany, 1 December (2000).

[4] A. Rosochowski, A. Matuszak, Rapid tooling: the state of art, J. Mater. Process. Technol. 106 (2000) 191–198.

[5] D. Gibson, Shi. Material Properties, Fabrication parameters in selective laser sintering process, Rapid Prototyp. J. 3 (4) (1997) 129–136.

[6] P.J. Ross, Taguchi Techniques for Quality Engineering, McGraw-Hill, New York, (1988).

[7] S.O. Onuh, K.K.B. Hon, Application of the Taguchi method and new hatch styles for quality improvement in stereolithography, Proceedings of the Institution of Mechanical Engineers, Part B (Journal of Engineering Manufacture) 212 (1998) 461–472.

DOI: 10.1243/0954405981515761

[8] S.O. Onuh, K.K.B. Hon, Optimizing build parameters for improved surface finish in stereolithography, International Journal of Machine Tools and Manufacture 38 (1998) 329–342.

DOI: 10.1016/s0890-6955(97)00068-0

[9] J. Zhou, D. Herscovici, C. Chen, Parametric process optimization to improve the accuracy of rapid prototyped stereolithography parts, International Journal of Machine Tools and Manufacture 40 (2000) 363–379.

DOI: 10.1016/s0890-6955(99)00068-1

[10] G. Casalino, L.A.C. De Filippis, A.D. Ludovico, L. Tricarico, An investigation of rapid prototyping of sand casting molds by selective laser sintering, J. Laser Appl. 14 (2) (2002) 100–106.

DOI: 10.2351/1.1471561

[11] G. Casalino, L.A.C. De Filippis, A.D. Ludovico, L. Tricarico, P. Boffi, Selective laser sintering of croning sand with CO2 and diode laser radiation, in: Proceedings 11th International DAAAM Symposium on Int. Manuf. & Aut, October 2000, Opatjia, Croatia, DAAAM International, Vienna, 2000, p.67.

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