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Three-dimensional numerical modeling of an induction heated injection molding tool with flow visualization

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Abstract

Using elevated mold temperature is known to have a positive influence of final injection molded parts. Induction heating is a method that allow obtaining a rapid thermal cycle, so the overall molding cycle time is not increased. In the present research work, an integrated multi-turn induction heating coil has been developed and assembled into an injection molding tool provided with a glass window, so the effect of induction heating can directly be captured by a high speed camera. In addition, thermocouples and pressure sensors are also installed, and together with the high speed videos, comparison of the induction heating and filling of the cavity is compared and validated with simulations. Two polymer materials ABS and HVPC were utilized during the injection molding experiments carried out in this work. A nonlinear electromagnetic model was employed to establish an effective linear magnetic permeability. The three-dimensional transient thermal field of the mold cavity was then calculated and compared with the experiments. This thermal field was transferred to an injection molding flow solver to compare simulations and experimental results from the high speed video, both with and without the effect of induction heating. A rapid thermal cycle was proved to be feasible in a mold with an integrated induction coil. Furthermore, it was shown that the process can be modeled with good accuracy, both in terms of the thermal field and of the flow pattern.

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References

  1. Yao D, Chen S-C, Kim BH (2008) Rapid thermal cycling of injection molds: an overview on technical approaches and applications. Adv Polym Technol 27:233–255

    Article  Google Scholar 

  2. Chen S, Peng HS, Chang JA, Jong WR (2004) Simulations and verifications of induction heating on a mold plate. Int Commun Heat Mass Transfer 7:971–980

    Article  Google Scholar 

  3. Chen SC, Peng HS, Chang JA, Jong WR (2005) Rapid mold surface heating/cooling using electromagnetic induction technology

  4. Chen S-C, Jong W-R, Chang Y-J, Chang J-A, Cin J-C (2006) Rapid mold temperature variation for assisting the micro injection of high aspect ratio micro-feature parts using induction heating technology. J Micromech Microeng 16:1783–1791

    Article  Google Scholar 

  5. Chen SC, Jong WR, Chang JA (2006) Dynamic mold surface temperature control using induction heating and its effects on the surface appearance of weld line. J Appl Polym Sci 101:1174–1180

    Article  Google Scholar 

  6. Chen SC, Jong WR, Chang JA, Chang YJ (2006) Dynamic mold surface temperature control using induction and heater heating combnied with coolint cooling. Int Polym Process XXI:457–463

    Google Scholar 

  7. Chen SC, Tarng SH, Chiou YC, Tsai TP, Yang WH (2008) Numerical simulation and experimental study on the temperature behavior of pulsed cooling. In: Proceedings of the Polymer Processing Society PPS-24

  8. Kwon O-K, Jeong H-T, Yun J-H, Park K (2007) A study on rapid mold heating system using high-frequency induction heating. Trans Korean Soc Mech Eng A 31:594–600

    Article  Google Scholar 

  9. Park K, Choi S, Lee SJ, Kim YS (2008) Injection molding for a ultra thin-wall part using induction heating. Trans Korean Soc Mech Eng A 32:481–487

    Article  Google Scholar 

  10. Eom H, Park K (2009) Fully-coupled numerical analysis of high-frequency induction heating for thin-wall injection molding. Polym-Plast Technol Eng 48:1070–1077

    Article  Google Scholar 

  11. Park K, Kim Y-S (2009) Effects of mold temperature on mechanical properties of an injectionmolded part with microfeatures. J Polym Eng 29:135–153

    Article  Google Scholar 

  12. Eom HJ, Park K (2010) Integrated numerical analysis of induction-heating-aided injection molding under interactive temperature boundary conditions. Trans Korean Soc Mech Eng A 34:575–582

    Article  Google Scholar 

  13. Park K, Lee S-I (2010) Localized mold heating with the aid of selective induction for injection molding of high aspect ratio micro-features. J Micromech Microeng 20:11

    Google Scholar 

  14. Park K, Sohn D-H, Cho K-H (2010) Eliminating weldlines of an injection-molded part with the aid of high-frequency induction heating. J Mech Sci Technol 24:149–152

    Article  Google Scholar 

  15. Eom H, Park K (2011) Integrated numerical analysis to evaluate replication characteristics of micro channels in a locally heated mold by selective induction. Int J Precis Eng Manuf 12:53–60

    Article  Google Scholar 

  16. Park K, Seo YS, Sohn DH (2011) Automated mold heating system using high frequency induction with feed back temperature control. Int Polym Process XXVI:490–497

    Article  Google Scholar 

  17. Huang M-S, Tai N-S (2009) Experimental rapid surface heating by induction for micro-injection molding of light-guided plates. J Appl Polym Sci 113:1345–1354

    Article  Google Scholar 

  18. Huang M-S, Huang Y-L (2010) Effect of multi-layered induction coils on efficiency and uniformity of surface heating. Int J Heat Mass Transf 53:2414–2423

    Article  Google Scholar 

  19. Huang M-S, Yu J-C, Lin Y-Z (2010) Effect of rapid mold surface inducting heating on the replication ability of microinjection molding light-guided plates with v-grooved microfeatures. J Appl Polym Sci 118:3058–3065

    Article  Google Scholar 

  20. Yu J-C, Huang M-S, Liang Z-F, Gu H-H (2011) Intelligent optimization of the replication of injection molding light guide plates using rapid mold surface inducting heating. In: Fourth International Conference on Intelligent Networks and Intelligent Systems

  21. Nian S-C, Huang M-S, Tsai T-H (2014) Enhancement of induction heating efficiency on injection mold surface using a novel magnetic shielding method. Int Commun Heat Mass Transfer 50:52–60

    Article  Google Scholar 

  22. Sung Y-T, Lin Y-N, Hwang S-J, Lee H-H, Huang D-Y (2011) Design of induction heating module for uniform cavity surface heating. In: Annual Technical Conference - ANTEC, Conference Proceedings

  23. Huang CT, Hsien IS, Tsai CH, Chiou YC, Tang CC (2011) The effects of various variotherm processes and their mechanisms on injection molding. Int Polym Process XXVI:265–274

    Article  Google Scholar 

  24. Huang CT, Hsieh IS, Tsai CH (2010) The effects of various variotherm processes and their mechanisms on injection molding. In: Proceedings of the Polymer Processing Society PPS-26

  25. Kim S, Shiau C-S, Kim BH (2007) Injection molding nanoscale features with the aid of induction heating. Polym-Plast Technol Eng 46:1031–1037

    Article  Google Scholar 

  26. Xu RX, Sachs E (2009) Rapid thermal cycling with low thermal inertia tools. Polym Eng Sci 49:305–316

    Article  Google Scholar 

  27. Xie L, Ziegmann G (2008) A visual mold with variotherm system for weld line studying micro injection molding. Microsyst Technol 14:809–814

    Article  Google Scholar 

  28. Yu MC, Young WB, Hsu PM (2007) Micro-injection molding with the infrared assisted mold heating system. Mater Sci Eng:288– 295

  29. Michaelia W, Klaibera F, Scholzb S (2008) Investigations in variothermal injection moulding of microstructures and microstructured surfaces. Multi-Material Micro Manufacture

  30. Yang C, Yin XH, Cheng GM (2013) Microinjection molding of microsystem components: new aspects in improving performance. J Micromech Microeng 23:21

    Article  Google Scholar 

  31. Shayfull Z, Sharif S, Zain AM, Ghazali MF, Saad RM (2014) Potential of conformal cooling channels in rapid heat cycle molding: a review. Adv Polym Technol 33:24

    Article  Google Scholar 

  32. Guerrier P, Hattel JH (2013) Numerical modeling of magnetic induction and heating in injection molding tools. Proceedings NEWTECH 2013 2:35–45

    Google Scholar 

  33. Menotti S, Hansen H, Bissacco G, Guerrier P, Tang P (2015) Comparison of two setups for induction heating in injection molding. Int J Adv Manuf Technol

  34. Chen S-C, Jong W-R, Chang J-A (2006) Dynamic mold surface temperature control using induction heating and its effects on the surface appearance of weld line. J Appl Polym Sci 101:1174–1180

    Article  Google Scholar 

  35. Guerrier P, Nielsen KK, Hattel JH (2015) Temperature dependence and magnetic properties of injection molding tool materials used in induction heating. IEEE Trans Magn 51(9)

  36. Guerrier P, Nielsen KK, Menotti S, Hattel JH (Submitted) An axisymmetrical non-linear finite element model for induction heating in injection molding tools

  37. Rudnec V, Loveless D, Cook R, Black M (2003) Handbook of induction heating. Marcel Dekker Inc.

  38. Ratnajeevan S, Hoole H (eds) (1995) Finite elements, electromagnetics and design. Elsevier

  39. Davies EJ (1990) Conduction and induction heating. Peter Peregrinus Ltd., London

    Book  Google Scholar 

  40. Labridis D, Dokopoulos P (1989) Calculation of eddy current losses in nonlinear ferromagnetic materials. IEEE Trans Magn 25:2665–2669

    Article  Google Scholar 

  41. Guerrier P, Tosello G, Hattel JH (2014) Analysis of cavity pressure and warpage of polyoxymethylene thin walled injection molded parts: experiments and simulations. PPS30

  42. Vietri U, Sorrentino A, Speranza V, Pantani R (2011) Improving the predictions of injection molding simulation software. Polym Eng Sci:2542

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Authors and Affiliations

  1. Department of Mechanical Engineering, Technical University of Denmark, Produktionstorvet Building 425, 2800, Kgs. Lyngby, Denmark

    Patrick Guerrier, Guido Tosello & Jesper Henri Hattel

  2. Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, Building 779, 4000, Roskilde, Denmark

    Kaspar Kirstein Nielsen

Authors
  1. Patrick Guerrier
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  2. Guido Tosello
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  3. Kaspar Kirstein Nielsen
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  4. Jesper Henri Hattel
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Correspondence to Patrick Guerrier.

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Guerrier, P., Tosello, G., Nielsen, K.K. et al. Three-dimensional numerical modeling of an induction heated injection molding tool with flow visualization. Int J Adv Manuf Technol 85, 643–660 (2016). https://doi.org/10.1007/s00170-015-7955-8

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  • DOI: https://doi.org/10.1007/s00170-015-7955-8

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