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Two-step forging of polyimide powders into small-/medium-sized gears with and without carbon fiber reinforcement
AIZAWA Tatsuhiko, MIYATA Tomohiro, ENDO Kiyoyuki
download PDFAbstract. A green polyimide cylindrical preform with short carbon fibers was prepared for two-step forging processes. Each preform was hot-forged at 623 K above the glass transition temperature of polyimide for near-net shaping of fifteen-teeth module-1.0 gear, and sinter-forged at 673 K below its melting point for densification. SEM and X-ray computer tomography were employed to make destructive and non-destructive diagnoses on the carbon fiber orientation during hot forging. Micro-hardness testing and gear-grade balancing were utilized to evaluate the engineering durability and dimensional accuracy of sinter-forged gears.
Keywords
Polyimide Powder Feed Stock, Green Preform, Sinter-Forging, Carbon Reinforcement
Published online 4/24/2024, 10 pages
Copyright © 2024 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: AIZAWA Tatsuhiko, MIYATA Tomohiro, ENDO Kiyoyuki, Two-step forging of polyimide powders into small-/medium-sized gears with and without carbon fiber reinforcement, Materials Research Proceedings, Vol. 41, pp 2648-2657, 2024
DOI: https://doi.org/10.21741/9781644903131-290
The article was published as article 290 of the book Material Forming
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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