Two-step PM forging for precise fabrication of carbon fiber reinforced engineering plastic gears

Two-step PM forging for precise fabrication of carbon fiber reinforced engineering plastic gears

AIZAWA Tatsuhiko, MIYATA Tomohiro, ENDO Kiyoyuki

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Abstract. Carbon fiber reinforced engineering plastic (CFREP) small-sized parts were fabricated by PM (Powder Metallurgy)-oriented forging process. This manufacturing procedure consisted of the green compaction and sinter-forging steps. In the first step, the CFREP powders were consolidated to a green compact with high density. This preform was further sinter-forged into a final product by hot stamping with the use of the induction heating unit. Hardness distribution was measured to describe the consolidation behavior with increasing the compression load, and to optimize the sinter-forging conditions for solidifying the green compact to the sintered product. X-ray tomography was utilized for non-destructive diagnosis on the residual pores and defects. The eight-teeth gear model was fabricated to demonstrate that two step procedure wrought well to yield the dense and defect-free gear with sufficient strength and integrity.

Carbon Fiber Composites, Engineering Plastics, Gears, Powder Metallurgy, Green Compaction, Sinter-Forging, Die Technology

Published online 4/19/2023, 10 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: AIZAWA Tatsuhiko, MIYATA Tomohiro, ENDO Kiyoyuki, Two-step PM forging for precise fabrication of carbon fiber reinforced engineering plastic gears, Materials Research Proceedings, Vol. 28, pp 1799-1808, 2023


The article was published as article 195 of the book Material Forming

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