Optimization of Ladle Tilting Speed for Preventing Temperature Drops in the Die Casting Process

Authors

  • Haru Ando Mie University, Faculty of Engineering, Department of Mechanical Engineering, 1577 Kurimamachiya-cho, Tsu, Mie, Japan
  • Daichi Minamide Mie University, Faculty of Engineering, Department of Mechanical Engineering, 1577 Kurimamachiya-cho, Tsu, Mie, Japan
  • Yuto Takagi Mie University, Faculty of Engineering, Department of Mechanical Engineering, 1577 Kurimamachiya-cho, Tsu, Mie, Japan
  • Ken’ichi Yano Mie University, Faculty of Engineering, Department of Mechanical Engineering, 1577 Kurimamachiya-cho, Tsu, Mie, Japan
  • Naoto Nakamura Yamaha Motor Co Ltd, 2500 Shingai, Iwata-city, Shizuoka, Japan
  • Masahiro Sano Yamaha Motor Co Ltd, 2500 Shingai, Iwata-city, Shizuoka, Japan
  • Takahiro Aoki Yamaha Motor Co Ltd, 2500 Shingai, Iwata-city, Shizuoka, Japan
  • Yasunori Nemoto Flow Science Japan, Inc. Motoasakusa MN Bid.7F, 1-6-13, Motoasakusa, Taito-ku, Tokyo, Japan

DOI:

https://doi.org/10.7494/jcme.2022.6.4.69

Abstract

In die casting, molten metal poured into a shot sleeve is pressed into a mold by a plunger at high speed. The temperature of the metal drops significantly while it is being poured from the ladle to the shot sleeve, resulting in casting defects such as misrun flow lines. Although it is important to control the temperature at all stages of the process, a method for minimizing temperature loss has not yet been clarified to date. In this study, the cause of the temperature drop in the shot sleeve was clarified, and a method of optimizing the ladle tilting speed was proposed to prevent temperature drop. First, experiments were conducted to measure the decrease in metal temperature in the sleeve during pouring. These experiments revealed that the metal cools significantly from the moment it touches the shot sleeve. Therefore, the time from the first contact between the shot sleeve and the metal to the start of pouring was set as the objective function. A genetic algorithm was then used to derive the optimal ladle tilting speed pattern to suppress the temperature drop. This analysis confirmed that the metal was poured without flowing out or running ahead and that the immediate liquid level vibration after pouring was suppressed, thus ensuring stable pouring.

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Author Biography

Haru Ando, Mie University, Faculty of Engineering, Department of Mechanical Engineering, 1577 Kurimamachiya-cho, Tsu, Mie, Japan

Haru Ando (born in Japan, in September 1997)　received B.S. degree in mechanical engineering from the Mie University, Japan, in 2020, Her research interests include CFD optimization for casting processes. She is a member of Japan Foundry Engineering Society (2019-).

References

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Published

2022-12-22

How to Cite

Ando, H., Minamide, D. ., Takagi, Y., Yano, K. ., Nakamura, N. ., Sano, M. ., Aoki, T. ., & Nemoto, Y. . (2022). Optimization of Ladle Tilting Speed for Preventing Temperature Drops in the Die Casting Process. Journal of Casting &Amp; Materials Engineering, 6(4), 69–75. https://doi.org/10.7494/jcme.2022.6.4.69

Issue

Vol. 6 No. 4 (2022)

Section

Articles

License

Copyright (c) 2022 Haru Ando, Daichi Minamide, Yuto Takagi, Ken’ichi Yano, Naoto Nakamura, Masahiro Sano, Takahiro Aoki, Yasunori Nemoto

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This work is licensed under a Creative Commons Attribution 4.0 International License.