Fluidity Test of Al-Si Alloy Using by Computer Simulation

Abstract

Fluidity is the basic foundry property. The fluidity of AlSi alloy in real condition with computer simulation were compared. In this test was used two types of molds: horizontal molds with tree canals and vertical molds with six canals wich had different diameter (4,5; 6,5; 8,5; 10,5; 12 and 14 mm). As experimental material was used AlSi10MgMn (EN 1706) alloy. Range of pouring temperature was between 605°C to 830°C. NovaFlow&Solid soft commercial software package was used for numerically simulating the fluid flow of molten metal. The model of fluidity test was created by CAD system CATIA V5 R19. Measurement systems analysis (MSA), the analysis of the variance (ANOVA), t-test and the analysis of correlation were used for the evaluation. Youden plot was used for evaluation of the impact of operators on the errors. Values of fluidity for each temperature level obtained by the horizontal mold have a high degree of agreement with those obtained by computer simulation. On the contrary, the values, obtained by the vertical mold are more sensitive to the operator. This fact caused the match between the simulation and a practical experiment is only partial.

Simulation Models in a Fluidity Test of the Al-Si Alloy

“…This opinion was confirmed by Futáš et al [20,21] who evaluated the relationship between computer-simulated and experimental fluidity tests without statistically significant differences in the results.…”

“…This arrangement allows the number of tests to be reduced. The results, supplemented by a computer simulation (software Novaflow&Solid Version 6.5) have been published in [20,21].…”

CALCULATION OF MECHANICAL AND FOUNDRY CHARACTERISTICS OF Al-Si ALLOYS USING REGRESSION ANALYSIS

“…185 samples with chemical composition in the range of 3.80-11.20 wt% Si, 0.12-1.76 wt% Fe, 0-2.25 wt% Mn, and 0-0.73 wt% Mg, and Sr as 0.02 ± 0.002 wt% were used for analysis. The melt was cast at 760 °C into a chill mould for tensile test samples (3-5) and a chill mould ("harph" or "lyre", details in [8]) for the vertical fluidity test. The tensile test was performed on a 200 kN Zwick-Extensometer according to ISO 6892-1 [9].…”

Archives of Metallurgy and Materials

“…Therefore, it seems advantageous to replace the experiment by computer simulation as a first approximation. Futáš [10,11] evaluated the relationship between the simulated and experimental vertical fluidity tests without statistically significant difference in results. The correlation between the simulation results by software MAGMA and experimental results of the spiral test presented Di Sabatino [2].…”