On the avoidance of ripple marks on cast metal surfaces

M. Vynnycky; M. Zambrano; J. A. Cuminato

doi:10.1016/j.ijheatmasstransfer.2015.02.063

On the avoidance of ripple marks on cast metal surfaces

M. Vynnycky, M. Zambrano, J. A. Cuminato

Research output: Contribution to journal › Article › peer-review

Abstract

A mathematical model is derived for the purposes of predicting how to avoid unwanted defects, known as ripple marks, in the casting of metal ingots; the model is based around the momentum and heat transfer that occurs when a cooling molten metal meniscus rises between two parallel and vertical chill-mould walls. By using asymptotic techniques, the model is reduced systematically to a form that requires the numerical solution of a moving boundary problem involving just one partial differential equation. Numerical results are presented, and the significance of the model for predicting the depth and spacing of ripple marks in the casting of ingots and oscillation marks in continuous casting are discussed.

Original language	English
Pages (from-to)	43-54
Number of pages	12
Journal	International Journal of Heat and Mass Transfer
Volume	86
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2015.02.063
Publication status	Published - Jul 2015
Externally published	Yes

Keywords

Asymptotics
Casting
Ripple marks

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10.1016/j.ijheatmasstransfer.2015.02.063

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title = "On the avoidance of ripple marks on cast metal surfaces",

abstract = "A mathematical model is derived for the purposes of predicting how to avoid unwanted defects, known as ripple marks, in the casting of metal ingots; the model is based around the momentum and heat transfer that occurs when a cooling molten metal meniscus rises between two parallel and vertical chill-mould walls. By using asymptotic techniques, the model is reduced systematically to a form that requires the numerical solution of a moving boundary problem involving just one partial differential equation. Numerical results are presented, and the significance of the model for predicting the depth and spacing of ripple marks in the casting of ingots and oscillation marks in continuous casting are discussed.",

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AU - Zambrano, M.

AU - Cuminato, J. A.

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N2 - A mathematical model is derived for the purposes of predicting how to avoid unwanted defects, known as ripple marks, in the casting of metal ingots; the model is based around the momentum and heat transfer that occurs when a cooling molten metal meniscus rises between two parallel and vertical chill-mould walls. By using asymptotic techniques, the model is reduced systematically to a form that requires the numerical solution of a moving boundary problem involving just one partial differential equation. Numerical results are presented, and the significance of the model for predicting the depth and spacing of ripple marks in the casting of ingots and oscillation marks in continuous casting are discussed.

AB - A mathematical model is derived for the purposes of predicting how to avoid unwanted defects, known as ripple marks, in the casting of metal ingots; the model is based around the momentum and heat transfer that occurs when a cooling molten metal meniscus rises between two parallel and vertical chill-mould walls. By using asymptotic techniques, the model is reduced systematically to a form that requires the numerical solution of a moving boundary problem involving just one partial differential equation. Numerical results are presented, and the significance of the model for predicting the depth and spacing of ripple marks in the casting of ingots and oscillation marks in continuous casting are discussed.

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KW - Casting

KW - Ripple marks

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JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

ER -

On the avoidance of ripple marks on cast metal surfaces

Abstract

Keywords

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