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Atomization in High-Pressure Die Casting - Step 2 Simulation of Atomized Flow of Molten Aluminum by LES-VOF Method
Technical Paper
2018-01-1393
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The atomization of molten aluminum when injected during high-pressure die casting is analyzed to determine its effect in enhancing the strength of the product being cast. In the previously reported first step of this study, molten aluminum was injected into open space and its atomization was observed photographically. Now in the second step of the study, a simulation is conducted to determine how the molten aluminum becomes atomized at the injection nozzle (gate) and how this atomized material flows and fills the cavity. A new simulation method is developed based on large-eddy simulation coupled with the volume-of-fluid method. The simulation system is verified by comparing its output with photographs taken in the first step of the study. Simulations are then conducted using an approximation of a real cavity to visualize how it is filled by the atomized molten aluminum. The results show that the atomized material is conveyed through the cavity as a multiphase flow containing fine air bubbles, and that this multiphase flow persists until filling is complete.
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Koya, E., Nakagawa, M., Kitagawa, S., Ishimoto, J. et al., "Atomization in High-Pressure Die Casting - Step 2 Simulation of Atomized Flow of Molten Aluminum by LES-VOF Method," SAE Technical Paper 2018-01-1393, 2018, https://doi.org/10.4271/2018-01-1393.Data Sets - Support Documents
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References
- Akihiko , K.A.M.I.O. High Quality Aluminum Alloy Pressure Diecasting Journal of Japan Institute of Light Metals 35 8 478 484 1985 10.2464/jilm.35.478
- Mikuni , A. , Itagaki , O. , and Suzuki , M. Development of Aluminum Die Cast Sub-Frame JSAE Annual Congress Proceeding 20045658 2004
- Yamada , Y. , Yoshi , H. , Mochizuki , S. et al. Evaluation of J Factor and Leakage Quality for High Pressure Die Casting Applied to Closed-deck Type Cylinder Block SETC 2011-32-0504 2011
- North America Die Casting Association (NADCA) GATING MANUAL 35 36
- Kaneuchi , T. , Motegi , K. , and Imamura , T. Properties of Castings Produced by High Vacuum Die Cast Process Japan Die Casting Congress Transactions 277 282 2004
- Kaneuchi , T. and Nakano , H. Effect of J-Value for Internal Quality of HPDC Products at Various Casting Alloys Japan Die Casting Congress Transactions 131 136 2008
- Aida , S. , Kuboki , I. , Hayashi , Y. , Fujimoto , M. et al. Inference of Gate Plan/Casting Conditions on Melt Spurting Japan Die Casting Congress Transactions 111 117 2012
- Koya , E. and Nakagawa , M. Deterioration of Mechanical Properties of JIS ADC12 Alloy by Defects and Trial for the Prediction of Casting Strength by Casting CAE Aluminum Journal of Japan Foundry Engineering Society (J.JFS) 89 12 781 786 2017
- Koya , E. , Nakagawa , M. , Kitagawa , S. et al. Research of Atomization Phenomena in HPDC - Step 1: Feature of Gas Porosity Dispersion and Photography of Atomized Flow SAE Technical Paper 2018-01-1392 2018 10.4271/2017-01-1392
- Sakuragi , T. and Okumura , H. Numerical Method for Twin-Fluid Flow Simulation Considering Turbulence Flow in Die casting Journal of Japan Foundry Engineering Society J.JFS 84 6 325 333 2012
- Ito , H. , Maeda , Y. , and Murakami , A. Modeling Filling Simulation Using MARS Method for Thin Castings Journal of Japan Foundry Engineering Society J.JFS 89 4 167 173 2017
- Kubo , K. Recent Trend of Casting Simulation Systems Journal of Japan Foundry Engineering Society J.JFS 76 12 1022 1030 2004
- Nakagawa , M. , Chiba , K. , and Koya , E. Development of High-Pressure Die-Casting Simulation and Verification in Motorcycle Parts SETC JSAE27/20056557/2005-32-0025 2005
- Takahashi , I. , Anzai , K. , and Itamura , M. Visualization of Molten Meal Flow and Verification with Simulation Reports of 170th J.JFS Meeting 2017
- Iwata , Y. , Sugiyama , Y. , Iwahori , H. et al. Transferred Pressure and Shrinkage Cavity of Aluminum Alloys on Squeeze Casting Journal of Japan Foundry Engineering Society J.JFS 72 4 263 267 2000