METHOD FOR ANALYZING FLUIDIZE-SOLIDIFICATION

• Main Authors: ABE HARUKI, FUKUCHI FUMIAKI, MORISADA TOKIO
• Format: Patent
• Language: English
• Published: 03.10.2000
• Edition: 7
• Subjects: CALCULATING; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PERFORMING OPERATIONS; PHYSICS; POWDER METALLURGY; TESTING; TRANSPORTING

PROBLEM TO BE SOLVED: To prevent the development of casting defect, such as mis-run caused by the lowering of the temp. in molten metal flowing by modeling the solidified state of the molten metal with a solid phase ratio indicating the ratio of the solid phase existing in the liquid phase and applying an analyzing method of the optimum flowing field in the solidified state. SOLUTION: An analyzing shape model divided into minute elements for fluidize- solidifying analysis is prepared. The necessary data to the fluidize-solidifying analysis are inputted and simulated. The solidified state of the molten metal is modeled with the solid phase ratio indicating the ratio of the solid phase existing in the liquid phase from the temp. of each minute element to discriminate the molten metal state. The fluidizing analysis is executed at each prescribed time interval by applying the analyzing method of the optimum flowing field from the discriminated state. The temp. changing states of the molter metal and a mold are temp.-analyzed in each prescribed time interval, and the filling state of the molten metal in the mold is reflected to the temp.-distribution. After temp.-analyzing, it is judged whether the analysis is to be continued or not from the given inputted conditional data. From this analyzed result, the unfilled part of the molten metal is found to predict the developing position of the defect.