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고진공 다이캐스팅 공정에서 기계적 물성에 대한 진공도 영향 Effect of Vacuum Level on Mechanical Property in High-Vacuum Die-Casting Process

유명한, 문민석, 오제하, 송준혁
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한국기계기술학회지 (韓國機械技術學會誌)
제21권 제5호 (2019.10)
pp.976-981
한국기계기술학회 (Korean Society of Mechanical Technology)
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.

키워드
High vacuum die-casting고진공 다이캐스팅Light-weight경량화All-in-one process일체형 성형Vacuum block system with disk spring원판 스프링형 진공블럭Plunger velocity and fast shot set point플런저 고속전환위치
목차
ABSTRACT
1. 서 론
2. 본 론
    2.1. 진공블럭 시스템 설계 및 진공 채널 설계
3. 결 과
    3.1. 진공블럭 시스템 설계 및 진공 채널 설계
    3.2. 진공도에 따른 인장강도, 연신율 비교
    3.3. 고진공 다이캐스팅 공정 연구
4. 결 론
References
저자
  • 유명한(Korea Institute of Carbon Convergence Technology) | Myeong-Han Yoo
  • 문민석(Korea Institute of Carbon Convergence Technology) | Min-Seok Moon
  • 오제하(Korea Institute of Carbon Convergence Technology) | Je-Ha Oh
  • 송준혁(Korea Institute of Carbon Convergence Technology) | Joon-Hyuk Song Corresponding Author