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Klinefelter 증후군에 병발된 원발성 종격동 생식세포종
김용조 ( Yong Jo Kim ),권교선 ( Gyo Seon Kwun ),이영우 ( Young Wo Lee ),김경태 ( Kyung Tae Kim ),박연희 ( Yeon Hee Park ),류백렬 ( Baek Yeol Ryoo ),김태유 ( Tae You Kim ),임영혁 ( Young Hyuck Im ),이춘택 ( Choon Taek Lee ),강윤구 대한결핵 및 호흡기학회 1996 Tuberculosis and Respiratory Diseases Vol.43 No.6
김현필,김용조,Kim, Hyun-Pil,Kim, Yong-Jo 한국금형공학회 2008 한국금형공학회지 Vol.2 No.4
Supplementary features in injection molded products, which are boss, rib and snap fit, are mainly located in the products. These features might make molding flow improper in injection processing and consequently give rise to some of molding troubles such as short shot and hesitation. The sink mark on boss parts is generated by the volumetric shrinkage that is caused by both the molding thickness and the closed boss height. The volumetric shrinkage is affected by packing pressure and its amount tends to decrease by increasing the packing pressure. The packing pressure can therefore increase flow rate to a boss part and causes the sink mark depth to increase. As the molding thickness and the closed boss height in the boss part can increase the part volume, these may yield bad solidifying and also extend the molding cycle. In this paper, both the injection molding test and the flow analysis were carried out to investigate the effect of sink marks generated in the boss part of injection molded products.