Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
권호 표지
DOI QR코드

DOI QR Code

Effects of Runner Extension and Ingates on Mold Filling in Ring-type Cast Products

환형주조품의 용탕충진에 미치는 탕도연장부와 주입구 형상의 영향

  • Park, Kyeong-Seob (Department of Advanced Materials Engineering, Chosun University) ;
  • Kang, Shin-Wook (Department of Advanced Materials Engineering, Chosun University) ;
  • Kim, Hee-Soo (Department of Materials Science and Engineering, Chosun University)
  • 박경섭 (조선대학교 첨단소재공학과) ;
  • 강신욱 (조선대학교 첨단소재공학과) ;
  • 김희수 (조선대학교 재료공학과)
  • Received : 2015.02.10
  • Accepted : 2015.04.06
  • Published : 2015.04.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, potential defects of ring-type cast products during the mold-filling stage of the casting process were investigated using computer simulation. The main focus was on the effects of runner extension and ingates. During the mold filling the molten metal flowed from the bottom to the top of the mold in two curved paths along the ring-type cavity. The fluid fronts in the two paths did not show the identical velocity during the mold filling stage. This difference in the filling speeds may cause defects such as voids and local contractions. The present model contained virtual fluid detectors at various positions inside the mold. When the molten metal passed those points, the volume of fluid jumped up from zero to one. The moments were measured to compare the speeds of the fluid fronts. We attempted various combinations of runner extensions and ingates to stabilize the flow and then to optimize the casting mold design.

Keywords

References

  1. ASM Metals Handbook 15. Casting, ASM International (1992) 1365-1366.
  2. Kim GW and M. S. Thesis, Keimyung University, "A Study on the Development of the Foundry Industry (Focusing on the Evaporative Pattern Casting Industry)" (2012) 1.
  3. ASM Metals Handbook 15. Casting, ASM International (1992) 1280-1292.
  4. Yoon SI and M. S. Thesis, Chungnam National University, "Process Analysis for Process Design of Precision Casting of Metals" (1994) 1.
  5. ASM Metals Handbook 15. Casting, ASM International (1992) 484-499.
  6. Chung KC, J. Korea Foundry Society, "Casting Design and Pattern Design", 14 (1994) 14.
  7. Cast Irons, ASM Specialty Handbook, ASM International (1996) 10.
  8. Kwon HW and Seo GS, J. Korea Foundry Society, "Alloying Element in Gray Cast Iron", 26 (2006) 3-7.
  9. Kim HW and M. S. Thesis, Kyungpook National University, "Effects of Microstructure on the Mechanical Properties of Cylinder Head and Block in Gray Cast Iron" (2007) 1.
  10. Choi JK, J. Korea Foundry Society, "Computer Aided Casting Design", 10 (1990) 477-484.
  11. Hong CP, J. Korea Foundry Society, "State of the Art of Computer Simulation Based Casting Technology", 15 (1995) 5-13.
  12. U. A. Dabade and R. C. Bhedasgaonkar, Procedia CIRP, "Casting Defect Analysis Using Design of Experiments (DoE) and Computer Aided Casting Simulation Technique", 7 (2013) 616-621. https://doi.org/10.1016/j.procir.2013.06.042
  13. W. Zhang, S. Xiong and B. Liu, Journal of Materials Processing Technology, "Study on a CAD/CAE System of Die Casting", 63 (1997) 707-711. https://doi.org/10.1016/S0924-0136(96)02711-2
  14. Chung KC, J. Korea Foundry Society, "Casting Design and Pattern Design", 14 (1994) 15.