Laser Solutions (한국레이저가공학회지)

Korean Society of Laser Processing (한국레이저가공학회)
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Investigation of the Surface Temperature and Cutting Characteristics of Silicon Nitride in Laser-Assisted Machining

Laser-assisted machining에서 질화규소 시편의 표면온도와 절삭특성에 관한 연구

  • Im, Se-Hwan (Intelligent Manufacturing Systems Research Division, KIMM) ;
  • Lee, Je-Hun (Intelligent Manufacturing Systems Research Division, KIMM) ;
  • Sin, Dong-Sik (Intelligent Manufacturing Systems Research Division, KIMM) ;
  • Kim, Jong-Do (Division of Marine System Engineering, Korea Maritime University) ;
  • Kim, Ju-Hyeon (School of Mechanical and Automotive Engineering, Kookmin University)
  • 임세환 (한국기계연구원 지능형생산시스템본부) ;
  • 이제훈 (한국기계연구원 지능형생산시스템본부) ;
  • 신동식 (한국기계연구원 지능형생산시스템본부) ;
  • 김종도 (한국해양대학교 기관시스템공학부) ;
  • 김주현 (국민대학교 기계자동차공학부)
  • Published : 2009.03.31
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Abstract

In laser-assisted machining (LAM), laser beam is used to locally increase the temperature of a workpiece and thus to enhance the machinability. In order to set the temperature of the material removal area of a workpiece at an optimal value, process parameters, such as laser power, feed rate, and rotational velocity, have to be carefully controlled. In this work, the effects of laser power and feed rate on the temperature distribution of a silicon nitride rotating at a constant velocity were experimentally investigated. Using a pyrometer, temperatures at various locations of the silicon nitride were measured both in circumferential and axial directions. The measured temperatures were fitted to a quadratic equation to approximate the temperature at the cutting location. The machining results showed that cutting force and tool wear were decreased when the temperature at the cutting location was increased.

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