고진공 다이캐스팅 공정에서 기계적 물성에 대한 진공도 영향
Effect of Vacuum Level on Mechanical Property in High-Vacuum Die-Casting Process
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Aluminum High Vacuum Die-casting process has become more prevalent in automotive manufacturing industry which require high productive rate, weldable process and heat treatment process. However, high pressure die castings usually contain gas porosity due mainly to the entrapment of air or gas in the die during the high speed injection of the molten metal into the die cavity. Vacuum block system with disk spring was developed and vacuum chanel was optimized with numerical flow analysis. The porosity of die castings was analyzed by X-ray CT, and the effect of porosity on the mechanical properties was analyzed by hardness and tensile test. Tensile strength was improved 49.5% for 50mbar high vacuum die-casting process compare then 300mbar. And then, Surface property was analyzed with plunger velocity and fast shot set point.
Abstract
Aluminum High Vacuum Die-casting process has become more prevalent in automotive manufacturing industry which require high productive rate, weldable process and heat treatment process. However, high pressure die castings usually contain gas porosity due mainly to the entrapment of air or gas in the die during the high speed injection of the molten metal into the die cavity. Vacuum block system with disk spring was developed and vacuum chanel was optimized with numerical flow analysis. The porosity of die castings was analyzed by X-ray CT, and the effect of porosity on the mechanical properties was analyzed by hardness and tensile test. Tensile strength was improved 49.5% for 50mbar high vacuum die-casting process compare then 300mbar. And then, Surface property was analyzed with plunger velocity and fast shot set point.
참고문헌 (15)
- 이종형, "자동차용 밸브 하우징의 2 캐비티 다이캐스팅 성형해석에 관한 연구", 한국기계가공학회지, 5(2), pp.27~35 (2006), 한국기계가공학회
- 조승현, "자동차 경량화를 위한 다이캐스팅용 알루미늄합금 브레이크 페달의 강도해석", 한국생산제조학회지, 25(2), pp.138~142 (2016), 한국생산제조학회[DOI]
- 최보성, "자동차 웨더스트립 심재 경량화를 위한 강선(Steel Wire)의 소성변형 연구", 한국자동차공학회 논문집, 21(5), pp.82~86 (2013), 한국자동차공학회[DOI]
- 박준협, "컴퓨터 시뮬레이션을 이용한 자동차용 스프링 링크의 경량화 설계", 한국자동차공학회 논문집, 21(5), pp.157~161 (2013), 한국자동차공학회[DOI]
- 조정길, "Cut-out이 있는 Box형 차체의 하부구조 소재대체 경량화 설계 방법", 한국자동차공학회 논문집, 21(2), pp.45~54 (2013), 한국자동차공학회[DOI]
- 한규택, "Research on the Mold Design of Motor Housing using Die Casting Process", 한국기계가공학회지, 14(5), pp.36~41 (2015), 한국기계가공학회[DOI]
- 김진호, "다이캐스팅 금형의 내구 수명평가와 금형강 소재 선정에 대한 연구", 한국기계가공학회지, 12(3), pp.7~12 (2013), 한국기계가공학회
- 김철우, "고압 다이캐스팅용 알루미늄 합금의 열전도성 및 주조성에미치는 첨가원소의 영향", 대한금속·재료학회지, 56(11), pp.805~812 (2018), 대한금속·재료학회[DOI]
- T. Gakamoto, "Deve�lopment of Automotive Suspension Part by High Vacuum Die Casting", Journal of Japan Foundry Engineering Society, 76(4), pp.283~288 (2004)
- 조인성, "친환경 전기 하이브리드 자동차용 마그네슘 다이캐스팅 인버터 하우징의 열방출 특성", 한국주조공학회지, 38(3), pp.60~65 (2018), 한국주조공학회[DOI]
- J. C. Lee, "Effects of the Injection Speed and the Gate Geometry on the Flow Behaviors of the Molten Metal", Journal of the Korean institute of Metals and Materials, 336(7), pp.844~849 (2001)
- 권의혁, "마그네슘 합금 박육 부품 다이캐스팅 주조시 오버플로우 형상 및 주입속도가 주조 품질에 미치는 영향", 대한금속·재료학회지, 55(7), pp.515~522 (2017), 대한금속·재료학회[DOI]
- M. Tashiro, "Development of Nissan Innovative Casting System for Aluminum Casting Suspension Parts", Nissan Technical Review, (49) (2001)
- T. Gakamoto, "Deve�lopment of Automotive Suspension Part by High Vacuum Die Casting", Journal of Japan Foundry Engineering Society, 76(4), pp.283~288 (2004)
- C. S. Kang, "Thin-Wall Aluminum Die-Casting Technology for Development of Notebook Computer Housing", Journal of Materials Science & Technology, 24(1), pp.65~69 (2008)