Design & Manufacturing

Korean Society of Die & Mold Engineering (한국금형공학회)
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A study on pencil-core dies and die manufacture

펜슬코어 금형의 설계 및 제작에 관한 연구

  • Kim, Sei-hwan (Department of Metal Mold Design Engineering, Kongju National University) ;
  • Choi, Kye-kwang (Department of Metal Mold Design Engineering, Kongju National University)
  • 김세환 (공주대학교 금형설계공학과) ;
  • 최계광 (공주대학교 금형설계공학과)
  • Received : 2012.11.05
  • Accepted : 2013.01.25
  • Published : 2013.03.29
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Abstract

Pencil-core dies are relatively new technology in Korea. It is not that no one had tried to make them but had failed due to lack of technologies. However, Posco TMC Co., Ltd, one of the leading die makers in the world, is capable of sophisticated dies including pencil-core dies. Spark plugs made by pencil-core dies have energy efficiency close to 100 percent, which compares to 46 percent of conventional spark plugs. Even though they are now mostly installed in LPG automobiles, more and more diesel and gasoline vehicles are adopting them. This study focuses on how to improve core shape precision using controling design and parts machining methods for pencil-core dies and productivity.

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