Development and Evaluation of the Characteristics of Porous Materials for a Mold

금형 소재용 다공질 재료의 개발과 특성 평가

  • 박선준 (부산대학교 정밀기계공학과) ;
  • 정성일 (LG 생산기술원 자동화기술그) ;
  • 임용관 (부산대학교 정밀기계공학과 대학) ;
  • 정해도 (부산대학교 정밀정형 및 금형가공 연구) ;
  • 이석우 (한국생산기술연구) ;
  • 최헌종 (한국생산기술연구원)
  • Published : 2004.06.01

Abstract

At the large-sized mold fer injection molding, the remaining gas in the mold causes some problems with final products. In order to solve these problems, air-bent was drilled on the surface of mold. However, this method leaves the scar on the surface of a product. Therefore, porous material was developed to the removal of remaining gas in this study. Porcerax II, which is a commercialized porous material, were developed in USA. It requires the electric discharge machining(EDM) process to make pores on the surface of the materials. The electric discharge machining (EDM) process, however, cause the increase of the time and cost for the fabrication of the mold. In this study, high speed machining(HSM) process was applied to the fabrication of porous mold without electric discharge machining(EDM) process. Some characteristics of the developed materials machined by high speed machining(HSM) and electric discharge machining(EDM) including air-permeability and porosity were compared with those of Porcerax II. Besides, in order to be applied to the molding process, hardness and tensile & yield strength were compared between Porcerax II and developed materials.

Keywords

References

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