Influence of Mixer Type and Treatment Time on Strength Properties of Furan Compounds

METAL 2022 Conference Proeedings

Sviželová

et al. 2022

The article deals with numerical simulations of filling and solidification of ductile iron castings produced in the MOTOR JIKOV Slévárna (Foundry). The simulations we performed in the ProCAST simulation software. The research analyses the geometry of the gating system consisting of two Branches, with a total of 12 castings type "YOKE A". Each of the Branches contained a different gate shape. The operational partner defined operating conditions. Based on it, casting, solidification and stress states were calculated. An analysis of selected parameters was then performed to verify the influence of individual shapes of gates on the filling and solidification. Some differences in filling and solidification between the individual Branches were found. However, these differences are not significant. The findings are discussed in the text of this paper.

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“…In a similar way we could mention many other studies, e.g. [11][12][13][14][15][16][17][18][19][20][21][22], focused on casting production optimization.…”

Section: Directional Solidificationmentioning

confidence: 84%

Analysis of the influence of the gating system shape on the filling and solidification of ductile iron castings

METAL 2022 Conference Proeedings

Sviželová

et al. 2022

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“…However, in case of castings that are not subject to further machining porosity has to be dealt with by production technology modification, best before the casting process [3]. However, the porosity minimization task is complicated and it requires taking into account the material chemical composition, casting temperatures, inoculation method, risers, as well as the mould proper material and design [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Influence of the chill size on the porosity formation in ductile iron casting

FILIPEK

METAL 2022 Conference Proeedings

et al. 2022

This paper describes the numerical modelling of solidification of ductile iron castings intended for the shipbuilding industry. Numerical simulations we performed in the computer software MAGMASOFT ® . The purpose of numerical simulations was to predict solidification under defined casting conditions to verify whether the proposed production technology is adequate. Attention was focused mainly on the porosity occurrence in the casting, which is determined at a stated location using an ultrasonic test. Variants with different types of chills were simulated to determine their effect on the size of porosity. The results of these variants are presented in this paper. The variant with the best results was then recommended for production under operating conditions.

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“…Therefore, it is desirable to achieve a certain material structure that depends on many factors [2,6]. E.g., the pearlite and ferrite proportion depends, to a large extent, on the cooling rate which is influenced by the cast wall thickness and by the mold cooling ability [8][9][10]. Chemical composition is rather important from the viewpoint of mechanical properties as well defects formation in a cast [2,8,11].…”

Section: Introductionmentioning

confidence: 99%

Optimization of numerical simulations of gravity casting of ductile iron castings

METAL 2021 Conference Proeedings

Sviželová

et al. 2021