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정태성(T. S. Jung),이상훈(S. H. Lee) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
In this study, the characteristics of Electrical Discharge Machining (EDM) with the electrode materials were investigated. EDM experiments have been carried out on electrodes with eight different copper-based and graphite-based materials. From the results, the copper-based electrodes showed excellent surface roughness than the graphite-based electrodes. But graphite based electrodes have advantages in economic aspects.
수지 점도에 따른 박형 도광판 성형 캐비티 내의 온도와 압력 변화
정태성(T. S. Jung),김종선(J. S. Kim),하석재(M. W. Cho) 한국소성가공학회 2013 한국소성가공학회 학술대회 논문집 Vol.2013 No.10
Thin-walled injection molding has a lot of advantages such as weights, shape size, and reducing production cost, etc., and improve the rapid development of the information technology productions (mobile phone, monitor, for instance). The light guide plate is the major component of the backlight module, and high luminescence is obtained. LGP part`s dimensions become smaller, it thickness becomes smaller. The purpose of the present study is to predict the process of high speed injection molding corresponding to the capability of an injection molding machine for fabricating 5 inch LGP. Pressure and temperature in cavity were observed for operational conditions using the commercial CAE software, Moldflow. The plastic material of light guide plate is used for PC(HL8000) material by a measurement of viscosity.
정태성(T. S. Jung),유병택(B. T. Ryu) 한국소성가공학회 2014 한국소성가공학회 학술대회 논문집 Vol.2014 No.5
Since there are many molding parameters involved in injection molding process, determination of the molding conditions for lens molding is very important in order to precisely control the qualities of precision plastic parts. In this work numerical analysis of injection molding process were carried out by using the simulation software(Moldflow) for lens holder considering delivery system of injection mold, tunnel gate and pinpoint gate, and high thermal resistance resins, PA9T and LCP.