Water Cooling in Direct Chill Casting : Part 1, Boiling Theory and Control

Grandfield, John; Hoadley, Andrew; Instone, Stephen

doi:10.1007/978-3-319-48228-6_85

Cited by 3 publications

(5 citation statements)

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“…To prove this, experiments on heated materials (on one side) and cooling down with water spraying on the opposite side of the heating were conducted [13]. From these tests, it was concluded that heat transfer coefficients in the nucleate boiling regime do not change significantly with the water flowrate; however, the cooling flowrate affects the point at which film boiling happens.…”

Section: Advanced Casting Technologiesmentioning

confidence: 99%

“…Additionally, it has been shown [11,13] that using cooling water up to 30°C has no effect on the cooling rate of the cast ingot. However, if the cooling water exceeds 70°C, then it may have some negative effects on the depth and thickness of the mushy zone [13,14].…”

Section: Advanced Casting Technologiesmentioning

confidence: 99%

“…However, if the cooling water exceeds 70°C, then it may have some negative effects on the depth and thickness of the mushy zone [13,14].…”

Section: Advanced Casting Technologiesmentioning

confidence: 99%

“…In this regard, many studies have been conducted to have precise estimations of the heat transfer coefficients involved in cooling down the aluminium ingots [7,8,13,[31][32][33][34][35][36][37][38].…”

Section: Estimation Of the Heat Transfer Coefficientmentioning

confidence: 99%

“…It has been established [13,31] that the critical convective heat flux is achieved when transitioning from nucleating to water film boiling regime. This transition directly relates to casting velocity.…”

Section: Estimation Of the Heat Transfer Coefficientmentioning

confidence: 99%

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Depicting Aluminium DC Casting by Means of Dimensionless Numbers

Méndez¹,

Ambriz²,

Jaramillo³

et al. 2018

Advanced Casting Technologies

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DC casting of aluminium and its alloys is a controlled heat removal solidification process. The rate of heat extraction has strong effects on the microstructure and mechanical properties of the solidified alloy ingots. In view of this strict temperature, control over the ingot as it solidifies should be implemented in order to achieve metal with the best possible properties. In situ direct temperature measurements are complicated; so in this report, the use of dimensionless analysis to predict temperature distributions on the ingots as they are casted is proposed. It is reported that the dimensionless groups that better represent the impact of process variables on the solidification of aluminium and its alloys are the Péclet (Pe) and Biot (Bi) numbers.

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Section: Advanced Casting Technologiesmentioning

confidence: 99%

Section: Advanced Casting Technologiesmentioning

confidence: 99%

“…However, if the cooling water exceeds 70°C, then it may have some negative effects on the depth and thickness of the mushy zone [13,14].…”

Section: Advanced Casting Technologiesmentioning

confidence: 99%

Section: Estimation Of the Heat Transfer Coefficientmentioning

confidence: 99%

Section: Estimation Of the Heat Transfer Coefficientmentioning

confidence: 99%

See 3 more Smart Citations

Depicting Aluminium DC Casting by Means of Dimensionless Numbers

Méndez¹,

Ambriz²,

Jaramillo³

et al. 2018

Advanced Casting Technologies

View full text Add to dashboard Cite

show abstract

Modeling steam generation in the free-falling zone in direct-chill casting of aluminum

Tjards,

Hughes,

Chandrasekaran

et al. 2024

Applied Thermal Engineering

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Aluminum Ingot Thermal Stress Development Modeling of the Wagstaff<sup>®</sup> EpsilonTM Rolling Ingot DC Casting System during the Start-up Phase

Zhang

Shaber

2011

MSF

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Based on sequentially coupled CFD and FEM models, aluminum alloy rolling ingot thermal stress simulations have been conducted in order to understand start-up phase cold cracking phenomena and optimize tooling designs for 520×2120 mm rolling ingot casting on Wagstaff® Epsilon™ Ingot Tooling. In the CFD model, ingot surface temperature dependant and water flow rate dependant water boiling curves are applied. Thermal boundary conditions for the complex water intrusion phenomena under the ingot butt have been attempted. Temperature dependant elastic-plastic materials constitutive relationship has been employed in the transient thermal stress FEM model. Results of thermal stress development at ingot surface and inside the ingot are presented; Connection of cold cracking (ingot butt quarter and center cracks) with near surface stress development at the ingot butt is shown and the effect of water intrusion under the ingot butt on the butt stress development is also discussed. The predicted temperatures are validated against temperatures measured from cast-in thermocouples at strategic locations in field ingots in order to obtain realistic thermal boundary conditions. The predicted butt curl is also verified through field observation and measurement.

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Water Cooling in Direct Chill Casting : Part 1, Boiling Theory and Control

Cited by 3 publications

References 0 publications

Depicting Aluminium DC Casting by Means of Dimensionless Numbers

Depicting Aluminium DC Casting by Means of Dimensionless Numbers

Modeling steam generation in the free-falling zone in direct-chill casting of aluminum

Aluminum Ingot Thermal Stress Development Modeling of the Wagstaff<sup>®</sup> EpsilonTM Rolling Ingot DC Casting System during the Start-up Phase

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