국부가압 다이캐스팅 공정에서 3차원 유동 및 응고해석을 통한 자동차 변속기 Gear Housing의 주조방안 설계 최적화

박진영; 김억수; 박용호; 박익빈; Jin-Young Park; Eok-Soo Kim; Yong-Ho Park; Ik-Min Park

Korean Journal of Materials Research, Vol.16, No.11, 668-675, November, 2006

DOI10.3740/MRSK.2006.16.11.668 Export Citation

국부가압 다이캐스팅 공정에서 3차원 유동 및 응고해석을 통한 자동차 변속기 Gear Housing의 주조방안 설계 최적화

Optimization of Casting Design for Automobile Transmission Gear Housing by 3D Filling and Solidification Simulation in Local Squeeze Diecasting Process

박진영^†, 김억수¹, 박용호, 박익빈

부산대학교 재료공학부
¹한국생산기술연구원 부산분원

Jin-Young Park^†, Eok-Soo Kim¹, Yong-Ho Park², and Ik-Min Park²

Dept. of Engineering, Pusan National University, Korea
¹Pusan R&D Center, Korea Institute Of Industrial Technology, Korea
²Dept. of Material Engineering, Pusan National University, Korea

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In the partial squeeze casting process, the filling behavior of liquid metal and solidification pattern in thick area have significant influence on the quality of casting products and die life. For the optimal casting design of automobile transmission gear housing, various analyses were performed in this study by using computer simulation code, MAGMAsoft and the simulation results were compared and analyzed with experimental results. By air pressure criteria, internal porosities caused by air entrap during the mold filling were predicted and reduced remarkably by modification of gating system. Also, optimal squeeze-time lag to apply partial squeeze pin in thick area was calculated and the castings was free from shrinkage defects with the result of solidification analysis. Consequently, casting design for automobile transmission gear housing was optimized and approved by Computer Tomography.

Keywords:Local Squeeze Die casting;gating system;Filling simulation;Solidification simulation

[References]

Lee CH, Choi JK, Nam TW, J. Kor. Foundrymen's Soc., 20(6), 400 (2000)
Hong CP, J. Kor. Foundrymen's Soc., 15(1), 5 (1995)
El-Mahallawy NA, Taha MA, Pokora E, Klein F, J. of Mat. Sci. and Tech., 73(1), 125 (1998)
Tao J, Koichi A, Eisuke N, in Proceeding of the 3rd Pacific Rim International Conference on Modeling of Casting and Solidification Processes, (1996) (1996)
Weishan Z, Shoumei X, Baicheng L, J. of Mat. Sci. and Tech., 63(2), 707 (1997)
Lee JK, Choi JK, Hong CP, J. Kor. Foundrymen's Soc., 18(6), 555 (1998)
MAGMA Gibereitechnologie GmbH, MAGMASOFT User's Tutorial Manual., (1997) (1997)
Choo IH, Yu SK, Choi JK, J. Kor. Foundryrnen's Soc., 18(6), 578 (1998)

[Referenced By]

[1] Lee CH, Choi JK, Nam TW, J. Kor. Foundrymen's Soc., 20(6), 400 (2000)

[2] Hong CP, J. Kor. Foundrymen's Soc., 15(1), 5 (1995)

[3] El-Mahallawy NA, Taha MA, Pokora E, Klein F, J. of Mat. Sci. and Tech., 73(1), 125 (1998)

[4] Tao J, Koichi A, Eisuke N, in Proceeding of the 3rd Pacific Rim International Conference on Modeling of Casting and Solidification Processes, (1996) (1996)

[5] Weishan Z, Shoumei X, Baicheng L, J. of Mat. Sci. and Tech., 63(2), 707 (1997)

[6] Lee JK, Choi JK, Hong CP, J. Kor. Foundrymen's Soc., 18(6), 555 (1998)

[7] MAGMA Gibereitechnologie GmbH, MAGMASOFT User's Tutorial Manual., (1997) (1997)

[8] Choo IH, Yu SK, Choi JK, J. Kor. Foundryrnen's Soc., 18(6), 578 (1998)