Integrated Numerical Analysis of Induction-Heating-Aided Injection Molding Under Interactive Temperature Boundary Conditions

열-유동 상호작용을 고려한 유도가열 적용 미세 사출성형의 통합적 수치해석

  • Eom, Hye-Ju (Dept. of Nano-IT Engineering, Seoul Nat'l Univ. Tech.) ;
  • Park, Keun (School of Mechanical Design and Automation Engineering, Seoul Nat'l Univ. Tech.)
  • 엄혜주 (서울산업대학교 에너지환경대학원 Nano-IT 공학과) ;
  • 박근 (서울산업대학교 기계설계.자동화공학부)
  • Received : 2009.11.30
  • Accepted : 2010.03.02
  • Published : 2010.05.01


In recent years, several rapid-mold-heating techniques that can be used for the injection molding of thin-walled parts or micro/nano structures have been developed. High-frequency induction heating, which involves heating by electromagnetic induction, is an efficient method for the rapid heating of mold surfaces. The present study proposes an integrated numerical model of the high-frequency induction heating process and the resulting injection molding process. To take into account the effects of thermal boundary conditions in induction heating, we carry out a fully integrated numerical analysis that combines electromagnetic field calculation, heat transfer analysis, and injection molding simulation. The proposed integrated simulation is extended to the injection molding of a thin-wall part, and the simulation results are compared with the experimental findings. The validity of the proposed simulation is discussed according to the ways of the boundary condition imposition.


  1. Selden, R., 2000, “Thin Wall Molding of Engineering Plastics – A Literature Survey,” J. Injection Molding Tech., Vol. 4, pp. 159-166.
  2. Jim, F., 1995, “Thin Wall Molding Differences in Processing over Standard Injection Molding,” SPE ANTEC, Vol. 41, pp. 430-433.
  3. Kim, B. H. and Suh, N. P., 1986, “Low Thermal Inertia Molding,” Polym. Plast. Technol. Eng., Vol. 25, pp. 73-93.
  4. Jansen, K. M. B. and Flaman, A. A. M., 1994, “Construction of Fast-Response Heating Elements for Injection Molding Applications,” Polym. Eng. Sci., Vol. 34, pp. 894-897.
  5. Yao, D. and Kim, B., 2002, “Increasing Flow Length in Thin Wall Injection Molding Using a Rapidly Heated Mold,” Polym. Plast. Technol. Eng., Vol. 415, pp. 819-832.
  6. Park, K., Kim, B. and Yao, D., 2006, “Numerical Simulation for Injection Molding with a Rapidly Heated Mold, Part I: Flow Simulation for Thin Wall Parts,” Polym. Plast. Technol. Engng. Vol. 45, pp. 897-902.
  7. Chen, S. C., Peng, H. S., Chang, W. R. and Jong, W. R., 2004, “Simulations and Verifications of Induction Heating on a Mold Plate,” Int. Comm. Heat Mass Transfer, Vol. 31, pp. 971-980.
  8. Park, K., Hwang, J. J., Kwon, O. K. and Yun, J. H., 2007, “Finite Element Analysis of Induction Heating Process for Development of Rapid Mold Heating System,” Trans. Mat. Proc., Vol. 16, pp. 113-119.
  9. Kwon, O. K., Jeong, H. T., Yun, J. H. and Park, K., 2007, “A Study of Rapid Mold Heating System Using High-Frequency Induction Heating,” Trans. J. Kor. Soc. Mech. Engng. (A), Vol. 31, pp. 594-600.
  10. Eom, H. and Park, K., 2009, “Fully-Coupled Numerical Analysis of High-Frequency Induction Heating for Thin-Wall Injection Molding,” Polym. Plast. Tech. Eng. Vol. 48, pp. 1070-1077.

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