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FLOW FORMING 공법을 활용한 고강도 경량 알루미늄 휠 개발
김민수(Minsoo Kim),임태성(Taesung Lim),윤광민(Kwangmin Yoon),고영진(Youngjin Ko),김종명(Jongmyung Kim),신상진(Sangjin Shin),김영식(Youngsik Kim) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
Aluminum road wheels are widely applied for weight reduction and improvement of ride & handling performance. In this study, the high strength wheels were developed and performed the verified mecahnical properties such as fatigue, impact. The strength and elongation of developed flow forming wheels were increased by 15% and 60% respectively, as compared with current mass product process, low pressure casting wheels. Also, this flow forming wheels successfully were passed vehicle tests for durability and performance.
파이프 인서트 기술을 적용한 알루미늄 고압주조 부품개발
강문구(MunGu Kang),윤형섭(HyungSop Yoon),이철웅(CheolUng Lee),임태성(TaeSeong Lim),김성진(SeongJin Kim),윤광민(KwangMin Yoon) 한국자동차공학회 2022 한국 자동차공학회논문집 Vol.30 No.1
Recently, shaped components, from which oil or cooling water flows, have been produced. In order to fabricate the components produced by the High-Pressure Die-Casting(HPDC) process, such as oil-path, the deep hole-drilling method has been applied. However, it causes problems like oil leaks or cooling water leaks because HPDC products have plenty of defects, such as shrinkage or large pores. In this investigation, the pipe-inserted aluminum rear cover component was fabricated by HPDC. Instead of conducting hole-drilling on the rear cover, a pipe was inserted on the mold before casting during HPDC. Hence, defect exposure by post-machining was fundamentally blocked. A theoretical formula was derived in which the inserted pipe of the HPDC component was not deformed under a certain intensification pressure of HPDC, since there is a relationship between the HPDC processing parameter and the mechanical properties of the inserted pipe. Based on the theoretical formula, the relationship between the HPDC parameter and pipe deformation was proved in the experiment.