Laser Solutions (한국레이저가공학회지)

Korean Society of Laser Processing (한국레이저가공학회)
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Experimental study on micro-hole drilling of anodized aluminum using picosecond laser

피코초 레이저를 이용한 양극산화 알루미늄 미세 홀 가공의 실험적 연구

  • Oh, B.K. (Production engineering Research Institute, LG Electronics) ;
  • Bang, J.H. (Production engineering Research Institute, LG Electronics) ;
  • Kim, J.K. (Production engineering Research Institute, LG Electronics) ;
  • Lim, S.M. (Production engineering Research Institute, LG Electronics) ;
  • Lee, S.K. (Production engineering Research Institute, LG Electronics) ;
  • Jeong, S.H. (Production engineering Research Institute, LG Electronics) ;
  • Hong, S.K. (Production engineering Research Institute, LG Electronics)
  • 오부국 ((주)엘지전자 생산기술원) ;
  • 방준호 ((주)엘지전자 생산기술원) ;
  • 김종기 ((주)엘지전자 생산기술원) ;
  • 임성묵 ((주)엘지전자 생산기술원) ;
  • 이승기 ((주)엘지전자 생산기술원) ;
  • 정수화 ((주)엘지전자 생산기술원) ;
  • 홍순국 ((주)엘지전자 생산기술원)
  • Received : 2014.06.24
  • Accepted : 2014.06.27
  • Published : 2014.06.30
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Abstract

Aluminum has been widely used in the electric applications because of light metals. When mechanical element is periodically moving with contacting other surfaces, the anodizing process for aluminum is useful for avoiding the abrasive damage. The anodized element has quietly different characteristics with respect to the distribution of hardness and crystal structure. In this work, the laser drilling of anodized surface is studied experimentally. Fusion drilling method - laser drilling with inert gas blowing - is used. The effect of various process parameters (gas pressure, laser power, focus position) is investigated with respect to the hole size and circularity.

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