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논문 기본 정보

저자정보
(Changsung Precision) (Chosun College of Science& Technology)
저널정보
한국생산제조학회 한국생산제조학회지 한국생산제조학회지 Vol.35 No.1
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    초록·키워드

    This study investigates the effects of distinct physical properties of amorphous (PC) and crystalline (PP) resins on the injection-molding process capability and dimensional reliability of housing dry-fan components via CAE analysis and experimental verification. Simulation results indicate that whereas PC requires a high injection pressure of approximately 180 MPa, it exhibits stable dimensional behavior with a low volumetric shrinkage of 2.55%. Conversely, although PP allows for low-pressure molding at 30 MPa, it may be severely deformed owing to its high shrinkage rate of 5.23% and significant anisotropy. In actual CTQ measurements, PC demonstrates superior process capability with a C<sub>pk</sub> of 14.02, whereas PP fails to satisfy specifications, with a C<sub>pk</sub> of -2.20. These findings suggest that for precision-component design, mold-design compensation and process optimization considering resin crystallization characteristics should be considered instead of relying solely on material substitution for cost reduction.

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