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이동길(D.G. Lee),장경천(K.C. Jang),정민관(M.G. Jung),김명호(M.H. Kim),김일수(I.S. Kim) 한국생산제조학회 2008 한국생산제조시스템학회 학술발표대회 논문집 Vol.2008 No.5
MIM(Metal Injection Molding) that is a kind of PIM(Powder Injection Molding) is using in optical communication field, display field, several fields such as semi-conductor field because ceramic has superior physical properties. Also, mold's optimization that can produce high precision flange that is one of main parts of optical communication field is greatly required. The objective of this paper is to study the suitability of design and capability analysis for the MIM and process that can mass-produce the flange using in a mold by conduct the experiments as well as the flow analysis. It was filling time 0.5~1.5 second, injection pressure 11.0~12.5 ㎫ range for the injection parameters that cause high effect to injection derived from optimum condition by flow analysis. Yield that is more than gravity 7.495 that establish by target as result that analyze gravity of products at investigated injection conditions was 99.01 % and process capability was construed by 3.83 sigma level. Also, the average gravity and standard deviation was 7.6151 and 0.0511 respectively. The measured dimensions were all good results within the established target showing that concentricity, roundness, and density were 27.43 ㎛, 18.64, and 97.63%.
이동일(LEE D.I),신구용(Shin K.Y),임재섭(Lim J.S),이형권(Lee H.K) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
This paper has investigated and analyzed application status of live-line works to overhead transmission lines in foreign power utilities. The results of this paper will be useful data for applying live-line works to KEPCO 765 ㎸ Transmission lines.