pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (14권6호 576-589)
A Water Model Study on Molten Metal Flow in Die Cavity of Die Casting
다이캐스트 주물의 금형공동내에서 탕류에 관한 수모델적 연구
Myung-Jae Kim, Hee-Ho Choi, Nam-Don Cho
Water modeling experiments and computer simulation for the predictions of defects of die castings are very important to produce high quality castings with less cost. The relation between the variable air vent system and the characteristics of the fluid flow in the die cavity is studied by using water modeling tests, which give ideas on reasonable designing of die cavity, vent arrangement and gating system. In order to test the water modeling, injection is done by using water containing NaCl. Flow behaviors in cavities are visualized by high speed camera and video tape recorder, and local filling time is measured with electrode sensors. Special attention is paid to the configuration of die cavity. Simulated results by computer are examined and compared with the results of water modeling experiments. There are close correlations between the simulated results and water modeling ones.