Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Machinability Evaluation of Sapphire Glass Using Powder Blasting

파우더 블라스팅을 이용한 사파이어 글라스의 가공성 평가

  • Kang, Eun Ji (Department of Mechanical Engineering, Graduate School of Incheon National University) ;
  • Kim, Jung Ho (Department of Mechanical Engineering, Graduate School of Incheon National University) ;
  • Jang, Ho Su (Department of Mechanical Engineering, Graduate School of Incheon National University) ;
  • Park, Dong Sam (Division of Mechanical System Engineering, Incheon National University)
  • Received : 2015.03.17
  • Accepted : 2015.04.13
  • Published : 2015.04.15
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Abstract

In this study, the machinability of sapphire glass is tested using the powder blasting method under various blasting conditions. The thickness and diameter of the sapphire glass samples were 0.4 mm and 50.8 mm (2 inch), respectively. The machined patterns from each sample were a circle, a square, and a rectangle. The powder we used was GC #400 and #800. The blasting pressures of the powders were 2, 4, and 6 bar. The scanning time of the nozzle was 20 and the scanning speeds of the nozzle were 80, 100, and 120 mm/s. Experimental results showed that machining depths increased in proportion to blasting pressure. The machining depth of GC #800 was much higher than that of GC #400, while surface roughness was worst with GC #400. These results imply that the blasting pressure and size of the blasting powder are the most important parameters for machining sapphire glass.

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