Journal of Korean Society for Quality Management (품질경영학회지)

Korean Society for Quality Management (한국품질경영학회)
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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
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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.

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References

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