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냉각채널에 따른 Nozzle 제품의 휨 변형 특성 연구
이현종(H. J. Lee),주병돈(B. D. Joo),김상윤(S. Y. Kim),박성필(S. P. Park),문영배(Y. B. Moon),문영훈(Y. H. Moon) 한국소성가공학회 2011 한국소성가공학회 학술대회 논문집 Vol.2011 No.5
Plastic injection processes comprise injection, packing, cooling, ejection and process/part quality control applications. Plastic injection provides a number of advantages over the weight reduction, assembly simplification and high productivity. In this study FE analysis was performed with MoldFlow2009 to optimize flow characteristic. With optimized conditions, cooling channel was designed and cool analysis was performed. Warpage characteristic at various cooling conditions was analyzed. The results show that warpage can be successfully reduced by appropriate control of cooling channel and cooling temperature.
자동차범퍼의 사출성형 해석결과와 실제 성형품의 비교 연구
황시현(S. H. Hwang),김철규(C. G. Kim),지성대(S. D. Ji),김명기(M. K. Kim),문영배(Y. B. Moon),정영득(Y. D. Jeong) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
Importance of using an injection molding analysis has been increased. However the application of it has not been increased because the results of analysis do not sometime match to practical molding. Therefore, the difference of flow analysis and practical molding should be decreased. This study presents reasons of the difference for the location of weld-line in the flow analysis and practical molding on automobile bumper molding.