Semi-solid die casting of Al alloy is suitable for complicated large parts of near net shape without defect and excellent mechanical properties in comparison with conventional casting process. Die design for the product with high quality in semi-solid die casting is required to prevent micro porosity, inflow of oxidized substance, and liquid segregation. Therefore, shape and size of runner, position and size of overflow and air vent, and arrangement of heating line are very important. Micro porosity, unfilling phenomena, turbulent flow, and liquid segregation are occurred during semi-solid die casting. To prevent these phenomena, defect analysis of product according to the change of injection velocity is carried out and optimal injection velocity for high quality product is proposed and simulated. Also, the measurement of mechanical properties according to various injection velocity and heat treatment condition is performed.
Introduction of semi-solid metal forming to the production of automobile part
Einführung des Semi-Solid-Formens zur Herstellung von Fahrzeugbauteilen
2002
8 Seiten, 17 Bilder, 1 Tabelle, 15 Quellen
Conference paper
English
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