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Proceedings Paper

Improving dimensional accuracy of SLS processed part using Taguchi method
Author(s): Rong Cheng; Xiaoyu Wu; Jianping Zheng
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Paper Abstract

This paper presents experimental investigations on influence of important process parameters: 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.

Paper Details

Date Published: 24 May 2011
PDF: 5 pages
Proc. SPIE 7997, Fourth International Seminar on Modern Cutting and Measurement Engineering, 799715 (24 May 2011); doi: 10.1117/12.884811
Show Author Affiliations
Rong Cheng, Shenzhen Univ. (China)
Huazhong University of Science and Technology (China)
Xiaoyu Wu, Shenzhen Univ. (China)
Jianping Zheng, Shenzhen Univ. (China)

Published in SPIE Proceedings Vol. 7997:
Fourth International Seminar on Modern Cutting and Measurement Engineering
Jiezhi Xin; Lianqing Zhu; Zhongyu Wang, Editor(s)

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