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Design and Analysis of Mixture Experiments for Ball Mix Selection in the Ball Milling

볼밀링에서 볼 배합비 선택을 위한 혼합물 실험계획 및 분석

  • Kim, Seong-Jun (Department of Industrial Engineering, Gangneung-Wonju National University) ;
  • Choi, Jai Young (Department of Industrial Engineering, Gangneung-Wonju National University) ;
  • Shin, Hyunho (Department of Materials Engineering, Gangneung-Wonju National University)
  • 김성준 (강릉원주대학교 산업공학과) ;
  • 최재영 (강릉원주대학교 산업공학과) ;
  • 신현호 (강릉원주대학교 세라믹신소재공학과)
  • Received : 2014.07.31
  • Accepted : 2014.11.28
  • Published : 2014.12.31

Abstract

Purpose: Ball milling is a popular process for obtaining fine powders in the part and material industry. One of important issues in the ball milling is to produce particles with a uniform size. Although many factors affect uniformity of particles, this paper focuses on the choice of ball diameter. Consider a ball milling where balls can be taken with three different diameters. The purpose of this paper is to find a ball mix which minimizes the average particle size. Methods: Ball diameters are selected as 10mm, 3mm, and 0.5mm. In order to find an optimum mixing ratio, the method of mixture experiments is employed in this paper. Taguchi's signal-to-noise ratio (SNR) for smaller-the-better type is also used to analyze experimental data. Results: According to the experimental result, SNR is maximized when the ball mix is taken as either 7:3:0 or 6:4:0. Such mixing ratios can be technically validated in terms of porosity reduction. Conclusion: The ball mixing technique presented in this paper provides a useful way to improve the production efficiency with a low cost.

Keywords

References

  1. Akkurt, S., Romagnoli, M., and Sutcu, M. 2007. "DOE and ANN models for powder mixture packing." American Ceramic Society Bulletin 86(7):9101-9111.
  2. Choi, J., and Kim, S. J. 2011. "An optimal determination of ball mill mix using design of mixture experiments." Proceedings at The Spring Meeting of the Korean Institute of Industrial Engineers 1369-1374, Incheon.
  3. Kim, S. J. and Choi, J. 2012. "Determination of ball mill mix using design of mixture experiments." Proceedings at The Spring Conference of Korean Society for Quality Management, Seoul.
  4. Kim, S. J., Choi, J., and Shin, H. 2013. "A process improvement for ball milling using mixture experiments and Taguchi methods." Proceedings at The Spring Meeting of the Korean Institute of Industrial Engineers, Yeosu.
  5. Kim, S. J. and Park, J. I. 2010. "An optimal tolerancing of the mixture ratio with variance considerations." Journal of the Korean Society for Quality Management 38(4):580-586.
  6. Lim, Y. 2011. "Practical designs for mixture component-process experiments." Journal of the Korean Society for Quality Management 39(3):400-411.
  7. Mota, M., Teixeira, J. A., Bowen, W. R., and Yelshin, A. 2001. "Binary spherical particle mixed beds: porosity and permeability relationship measurement." Transactions of the Filtration Society 1(4):101-106.
  8. Park, S. 2010. Design of Experiments, 10th ed. Minyoungsa.
  9. Rhee, S. 2001. "A comparative analysis of three signal-to-noise ratios of dynamic characteristics parameter design." Journal of the Korean Society for Quality Management 29(3):82-91.
  10. Shin, H. 2009. Fundamentals of Ceramic Engineering. Books Hill.
  11. Shin, H., Lee, S., Jung, H. S., and Kim, J. B. 2013. Effect of ball size and powder loading on the milling efficiency of a laboratory-scale wet ball mill. Ceramic International 39, 8963-8968. https://doi.org/10.1016/j.ceramint.2013.04.093
  12. Yum, B. J., Kim, S. J., Seo, S. K., Byun, J. H., and Lee, S. H. 2013. "The Taguchi Robust Design Method : Current Status and Future Directions." Journal of the Korean Institute of Industrial Engineers 39(5):325-341. https://doi.org/10.7232/JKIIE.2013.39.5.325