The Study of Influence Laws of the Part Orientation on the Dimensions of Green Part Base on SLS

Abstract:

The SLS (Selective Laser Sintering, SLS) technology can directly manufacturing any complex structure, however, due to the limitation of the manufacturing engineering factor, the surface quality and the dimension accuracy of the green part are still an outstanding problem. So, the experimental methods were adopted to study the effect of part orientation on the machining accuracy, the part orientation will significantly affects the outline of the part due to the stair-stepping phenomenon, and then affects the surface quality and the dimension accuracy. The experimental samples of different part orientations including 0, 20, 45, 60, 90 degree were fabricated, and the results indicated that the stair-stepping phenomenon significantly affected by the part orientation, when the part orientation is 0, 45 and 90 degree, the dimension accuracy is best than other part orientation, it mean the stair-stepping phenomenon is smallest. So, when the part structure is complicated, the important structure dimension should be chosen the orientation 0, 45, or 90 degree

• Periodical: Advanced Materials Research (Volumes 424-425)
• Pages: 1233-1236
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.424-425.1233
• Online since: January 2012
• Authors: Gang Lu, Qing Song Yan, Xu Xiong, Hong Wan, Shou Yin Zhang, Can Cheng Liu
• Keywords: Part Orientation, Rapid Prototyping (RP), Selective Laser Sintering (SLS), Stair-Stepping Phenomenon

References

[1] Upcraft S., Fletcher R. The rapid prototyping technologies. Assembly Automation. 23(4): 318-330 (2003).

DOI: 10.1108/01445150310698634

[2] ONUH S. O., YUSUF Y. Y. Rapid prototyping technology: applications and benefits for rapid product development. Journal of Intelligent Manufacturing. (10): 301-311 (1999).

[3] Kumar S. Selective laser sintering: A qualitative and objective approach. JOM, 55 (10): 43-47 (2003).

DOI: 10.1007/s11837-003-0175-y

[4] Evans R.S., Bourell D. L. Beaman J. J., et al. Rapid manufacturing of silicon carbide composites. Rapid Prototyping Journal. 11: 37-40 (2005).

DOI: 10.1108/13552540510573374

[5] Ho H. C. H., Cheung W. L., Gibson I. Morphology and properties of selective laser sintered bisphenol-A polycarbonate. Industrial and Engineering Chemistry Research. (9): 1850-1862 (2003).

DOI: 10.1021/ie0206352

[6] Ho H. C. H., Cheung W. L, Gibson I. Effects of graphite powder on the laser sintering behaviour of polycarbonate. Rapid Prototyping Journal. 8(4): 233-242 (2002).

DOI: 10.1108/13552540210441148

[7] Wang C. j., Li X. S., Huang S. H. The Precision Analysis of SLS Prototypes. Journal of Huazhong University of Science and Technology(Natural Science Edition). 29(6): 77-79 (2001). (In Chinese).

[8] Fan Z. T., Huang R. Y., Xiao Y. J. Analyzing on the Precision of the Part Made by Selected Laser Sintering. Journal of Nanchang University(Engineering & Technology). 22(2): 6-10 (2000). (In Chinese).

[9] Fan K. M., Cheung W. L., Gibson I. Movement of powder bed material during the selective laser sintering of bisphenol-A polycarbonate. Rapid prototyping Journal. 11(4): 188-198 (2005).

DOI: 10.1108/13552540510612884

[10] Balasubramanian B. Study of the selective laser sintering of metal-polymer powders: [Ph.D. Dissertation], The University of Texas at Austin, Austin, Texas (1995).

[11] Koo J. H., Lao S., Ho W., et al. Polyamide nanocomposites for selective laser sintering, Solid Freeform Fabrication Proceedings. 392-409 (2006).