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열간 배압 성형 기술을 이용한 Al-Si합금 스크롤의 정형 제조 기술
이영선,이정환,이상용,박영도,이운섭 경상대학교 첨단소재연구소 2000 尖端素材 Vol.10 No.-
Hot precision forging with a back pressure was investigated for manufacturing of compressor parts made of Al-Si alloy. Disk-shaped blank made of Al-Si alloy was hot forged, and ribs were formed by loading back pressure on their top. The influence of the back pressure and die temperature on forgeability and properties of parts made of Al-Si alloy were examined. Using the F.E.M. simulation, we found the optimum value of back-pressure. The prototypes of scroll parts were forged into the near-net shape and satisfied the required properties.