APPARATUS AND METHOD FOR ANALYZING CASTING PROCESS

摘要

PROBLEM TO BE SOLVED: To provide an apparatus and a method for analyzing a casting process, by which apparatus and method, the position and size of a shrinkage cavity generated in a cast product in solidification can be accurately estimated. SOLUTION: A cast product is manufactured by pouring molten metal into a cavity formed in a metallic die, and by applying a pressure to the molten metal from an injection device, and by solidifying the molten metal in the state that the pressure is held. The method for analyzing the casting process analyzes the shrinkage cavities of the cast product as follows. The zone filled with the molten metal is divided into a plurality of elements (8a, 8b), and the flow speed u of the molten metal flowing between the respective neighboring elements (8a, 8b) is calculated. In calculating the flow speed u, it is assumed that the molten metal in the solid-liquid coexisting state in the respective elements (8a, 8b) integratedly flow in solidification. In this case, an apparent coefficientμeof viscosity is calculated based on a solid phase rate fs, and the flow speed u of the molten metal is calculated based on the calculated coefficientμeof viscosity. COPYRIGHT: (C)2007,JPO&INPIT