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2018 | OriginalPaper | Chapter

8. Miscellaneous Applications

Authors : Tomomasa Uemura, Manabu Iguchi, Yoshiaki Ueda

Published in: Flow Visualization in Materials Processing

Publisher: Springer Japan

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Abstract

This chapter consists of three topics on argon gas attachment to an immersion nozzle in the continuous casting process of steel, production of single-crystal silicon particles, and bubble removal from molten metals. Molten steel is introduced into a continuous casting mold through an immersion nozzle equipped with a sliding gate which controls the molten steel flow rate. Alumina (Al2O3) still contained in the steel preferably attaches to the inner wall of the immersion nozzle. As a result, the cross-sectional area changes with time and the flow rate of molten steel cannot be kept constant. In order to suppress the clogging of alumina, argon gas is introduced into the nozzle. The argon gas however attaches to the sliding gate and affects the flow rate and flow direction. Attachment patterns of argon gas will be explained. Spherical microsolar cells made of single-crystal silicon are expected to reduce the cost for generating solar energy. Conditions for producing high-quality single-crystal silicon will be introduced. Small bubbles contained in molten metals cause the pinhole defect, and hence, removal of the bubbles is one of the key technologies for producing clean metals. Bubble removal based on wettability effect will be introduced.

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previous chapter Wettability Problems in Materials Processing
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Metadata
Title
Miscellaneous Applications
Authors
Tomomasa Uemura
Manabu Iguchi
Yoshiaki Ueda
Copyright Year
2018
Publisher
Springer Japan
Book
Flow Visualization in Materials Processing

Print ISBN: 978-4-431-56565-9

Electronic ISBN: 978-4-431-56567-3

Copyright Year: 2018

DOI
https://doi.org/10.1007/978-4-431-56567-3_8

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