One-dimensional heat-transfer analysis during centrifugal casting of aluminum alloy and copper base metal matrix composites containing Al2O3, SiCp, and graphite particles has been studied. The model of the particle segregation is calculated by varying the volume fraction during centrifugal casting, and a finite difference technique has been adopted. The results indicate that the thickness of the region in which dispersed particles are segregated due to the centrifugal force is strongly influenced by the speed of rotation of the mold, the solidification time, and the density difference between the base alloy and the reinforcement. In the case where the base alloy density is larger than that of the particles, the thickness of the particle-rich region near the inner periphery decreases with an increase in speed, thereby increasing the volume fraction of dispersion. The solidification time of the casting is also dependent upon the speed of rotation of the mold, and it decreases with an increase in speed. This study also indicates that the presence of particles increases the solidification time of the casting.

Transient thermal analysis of solidification in a centrifugal casting for composite materials containing particle segregation

Continuous fabrication of bulk amorphous alloy sheets by twin-roll strip casting

A fuzzy logic controller for the molten steel level control of strip casting processes

Response to annealing treatments of twin-roll cast thin Al–Fe–Si strips

Numerical simulation of the fluid flow, heat transfer, and solidification of twin-roll strip casting

A numerical algorithm for the two-dimensional solidification problem in the twin-roll continuous casting system is presented in this paper Attention is focused on the elucidation of heat transfer and flow characteristics in both the liquid and the solid phases The present mathematical model can be applied to general full Navier-Stokes and energy equations, thereby covering the wide range of twin-roll casting conditions The boundary fixing method (BFM) is adopted to handle the moving boundary, and the resultant transformed governing equations for the solid and liquid regions are solved separately by using a usual explicit-type finite difference method In this paper, a general numerical methodology is presented, and the quantitative relationships between the important control parameters in continuous casting of twin-roll type (such as the roll speed, the roll gap, the initial temperature of molten materials, the material properties, the solidification profile, and the endpoint of solidification) are clarified in detail The present numerical results have been compared with experimental results obtained separately to check the validity of the proposed method

Two-dimensional model for twin-roll continuous casting

A numerical algorithm for the two-dimensional solidification problem in the twin-roll continuous casting(C.C.) system is presented in this paper. Attention is focused on the elucidation of heat transfer and flow characteristics in both the liquid and solid phases. The present mathematical model can be applied to general full Navier-Stokes and energy equations, thereby covering the wide range of twin-roll casting conditions. The boundary fixing method(BFM) was adopted to handle the moving boundary.

Two-Dimensional Solidification Analysis For Twin-Roll Continuous Casting

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Two-dimensional model for twin-roll continuous casting

Two-Dimensional Solidification Analysis For Twin-Roll Continuous Casting