Melt Filling Behaviors and Primary Si Particle Distribution on Horizontal Centrifugal Casting in B390 Aluminum Alloy

Park, Jeong‐Wook; Kim, Heon-Joo

doi:10.1007/s40962-016-0127-2

Cited by 13 publications

(2 citation statements)

References 14 publications

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“…4,11,24 The FAVOR method improves the accuracy of the numerical solution near mould walls and allows for the use of coarser grids than in standard FD methods. 25,26 Since the geometry representation is less mesh-dependent, the FAVOR method is also referred to as a 'free gridding' method. 27 The finite difference method is used in this study.…”

Section: Casting Simulation and Analysismentioning

confidence: 99%

Redesigning and numerical simulation of gating system to reduce cold shut defect in submersible pump part castings

Kumar¹,

Gopi²,

Amirthagadeswaran³

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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Gating system design is an essential element in casting that significantly affects the melt's molten metal flow behaviour, heat transfer, and solidification. Improper gating system leads to pouring-related defects like cold shut, misrun, etc. Submersible pump-bearing block castings produced in one of the leading foundries are rejected due to a cold shut defect. It was identified that the improper gating system is the probable cause for rejection. The bearing block and the existing gating system were modelled in 3D modelling software, and the molten metal flow behaviour of casting was simulated with casting simulation software. Based on the simulation results, the existing gating system was redesigned following established empirical relations. The component with the revised gating system was analysed for flow behaviour through simulation with the software. With the revised gating system, elimination of cold shut is observed, and the revised gating design is recommended to the industry for implementation. The effectiveness of the revised gating system is also validated with pump diffuser casing, which has similar geometrical and material characteristics. The simulation results and experimental validation showed a reduction in flow and surface defects. Appropriate design of the gating system and balanced arrangement of cavities in the gating system are noted to reduce the flow and surface-related defects. It is observed that with the revised gating systems, the percentage of rejection is reduced from 28.36% to 2.34% and 23.43% to 2.45% for the bearing block and pump diffuser casing respectively.

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Section: Casting Simulation and Analysismentioning

confidence: 99%

Redesigning and numerical simulation of gating system to reduce cold shut defect in submersible pump part castings

Kumar¹,

Gopi²,

Amirthagadeswaran³

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…The correct selection of the speed of rotation forms an important criterion in the production of centrifugal castings, the rotational speed of the mould having a direct say on the flow speed of the liquid metal in the mould in both longitudinal and circumferential directions. Park et al [52] report, when the rpm of the mould is increased from 1200 to 2500, the flow speed of the metal is almost doubled. The situation is worsened when the melt being longitudinally fed and the melt being reflected from the mould wall in a horizontal mould, collide.…”

Section: Mould Rotational Speed and Metal Flow In The Mouldmentioning

confidence: 99%

Effect of processing factors on the characteristics of centrifugal casting

2020

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Centrifugal castings are produced by pouring liquid metal into rotating moulds. It solidifies under the influence of centrifugal forces, directed from the center to the periphery of the mould on account of mould rotation, and exhibits directionality in solidification which helps to eliminate voids and discontinuities in the resultant casting, usually encountered in gravity castings. Also, a compositional gradient is sat up in the melt which can be monitored, to produce functionally graded materials (FGMs) of choice with multi-functionality. The pouring rate, pouring temperature, mould temperature, and mould material can be suitably selected and altered in isolation or in combination, to generate a desired thermal gradient in the melt which decides its cooling rate. The cooling rate of the melt has the greatest impact on the grain structure of the casting. On the other hand, the grain structure of the casting governs its mechanical performance and decides the suitability for any specific end-use. Thus, different processing factors influence the characteristics of centrifugal casting. In the present article, a sincere attempt is made to analyze the effect of these factors and to enumerate the role played by each one of these factors in deciding the centrifugal casting characteristics.

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Preparation and Composition Distribution in Hollow Tubular TiB-Ti Composites during Centrifugal Spraying Process

Zhang

et al. 2022

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Melt Filling Behaviors and Primary Si Particle Distribution on Horizontal Centrifugal Casting in B390 Aluminum Alloy

Cited by 13 publications

References 14 publications

Redesigning and numerical simulation of gating system to reduce cold shut defect in submersible pump part castings

Redesigning and numerical simulation of gating system to reduce cold shut defect in submersible pump part castings

Effect of processing factors on the characteristics of centrifugal casting

Preparation and Composition Distribution in Hollow Tubular TiB-Ti Composites during Centrifugal Spraying Process

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