한국소성가공학회:학술대회논문집 (Proceedings of the Korean Society for Technology of Plasticity Conference)
- 한국소성가공학회 2001년도 제4회 압출 및 인발가공 심포지엄
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- Pages.1-12
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- 2001
유동제어에 의한 피스톤 핀의 전${\cdot}$ 후방압출 공정 개발
Forward-Backward Extrusion Process Development of Piston-Pin by Flow Control
- 발행 : 2001.11.01
초록
In cold forging of piston-pin for automobile parts, the flow defect appears by the dead metal zone. This appearance evidently happens in products with a thin piercing thickness for the dimension accuracy and the decrease of material loss. The best method that can prevent flow defect is removing dead metal zone. The purpose of this study is to investigate the material flow behavior of forward-backward extruded piston-pin through the relative velocity ratio and the stroke control of upper moving punch & container using the flow control forming technique. The finite element simulations are applied to analyse the flow defect, then the results are compared with the plasticine model material experiments. Finally, the model experiment results are in good agreement with the FE simulation ones.
키워드