한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제33권6호
  • /
  • Pages.469-475
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  • 2016
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  • 1225-9071(pISSN)
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  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
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대형 중력주물품의 기공발생 저감을 위한 다공성 필터 (Foam-Filter) 적용효과 분석

Study on Effects of Foam-Filter for Reduction of Air-Trapping in Large-Size Sand Gravity Casting

  • 유재현 (부산대학교 기계공학부 대학원) ;
  • 이호림 (LG 전자 사업본부 Chiller 개발팀) ;
  • 주정아 (LG 전자 사업본부 Chiller 개발팀) ;
  • 황윤제 (LG 전자 사업본부 Chiller 개발팀) ;
  • 신보성 (부산대학교 인지메카트로닉스/광메카트로닉스 공학과) ;
  • 박상후 (부산대학교 기계공학부/정밀정형 및 금형가공연구소)
  • Yu, Jae Hyun (Graduate School of Mechanical Engineering, Pusan National University) ;
  • Lee, Ho Rim (R&D Center, Division of Chiller Business, LG Electronics) ;
  • Joo, Jeong A (R&D Center, Division of Chiller Business, LG Electronics) ;
  • Hwang, Yun Je (R&D Center, Division of Chiller Business, LG Electronics) ;
  • Shin, Bo Sung (Department of Cogno-Mechatronics/Optics and Mechatronics Engineering, Pusan National University) ;
  • Park, Sang Hu (School of Mechanical Engineering, ERC/NSDM, Pusan National University)
  • 투고 : 2015.09.09
  • 심사 : 2016.01.22
  • 발행 : 2016.06.03
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초록

In this work, casting processes, such as filling and solidification, were simulated in order to accurately predict volume shrinkage defects in large-sized sand gravity casting. Turbulent flow of melted materials and a difference of solidification speed can cause volume shrinkage defects. In order to solve this problem and to understand the phenomenon, a porous filter application was studied. Two different porosities of 10 and 20 p.p.i filters were introduced into the gating system, and in view of the results so far achieved, the defect was dramatically reduced by 22%, compared to that without the use of the filter.

키워드

참고문헌

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