Startseite Modelling of Cyclic 3-Dimensional Heat Transfer in Injection Moulding
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Modelling of Cyclic 3-Dimensional Heat Transfer in Injection Moulding

  • A. Polynkin , J. F. T. Pittman und J. Sienz
Veröffentlicht/Copyright: 2. Mai 2013
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International Polymer Processing
Aus der Zeitschrift International Polymer Processing Band 19 Heft 4

Abstract

A detailed 3-dimensional analysis of cyclic heat transfer in a complex injection moulding mould tool has been carried out, using a general-purpose commercial heat transfer code (FIDAP). A novel, generally applicable technique for modelling of heat loss to ambient from the tool parting surfaces is introduced, to facilitate inclusion of the mould-open period in the modelling. Simulations are continued through 30 cycles of moulding, to attainment of steady periodic conditions. During this period temperatures at the polymer-steel interface rose by between 10 °C and 40°C above the coolant temperature. At the start of cooling, values of cavity surface heat transfer coefficients referred to the coolant temperature ranged from approximately 4000 W/m2K to 400 W/m2K, with the highest values occurring directly below the cooling channels and the lowest near a heated sprue bush. At the end of the cooling period, values at each location had dropped by approximately an order of magnitude. These results illustrate the limitations of plastics cooling analyses that use constant values of temperature or heat transfer coefficients as boundary conditions on the cavity surface. Comparison with results obtained omitting the modelling of the mould-open period shows how, in the latter case, higher tool temperatures are attained in the steady periodic conditions, and a larger number of cycles are required to reach steady periodic conditions.

∗ Mail address: J. F. T. Pittman, Centre for Polymer Processing Simulation and Design, School of Engineering, University of Wales Swansea, SA2 8PP, UK E-mail:

References

1 Yu, C. J., Sunderland, J. E., Poli, C.: Polym. Eng. Sci.30, p. 1599 (1990).10.1002/pen.760302408Suche in Google Scholar

2 Sridhar, L., Yin, W., Narh, K. A.: SPE Antec Tech. Papers, p. 2545 (1999).Suche in Google Scholar

3 Delaunay, D., Le Bot, P.: Polym. Eng. and Sci.40, p. 1692 (2000).10.1002/pen.11301Suche in Google Scholar

4 Himasekhar, K., Lottey, J., Wang, K. K.: SPE Antec Tech. Papers, p. 1103 (1990).Suche in Google Scholar

5 Kwon, T. H., Shen, S. F., Wang, K. K.: SPE Antec Tech. Papers, p. 110 (1990).Suche in Google Scholar

6 Chen, I.-C., Hu, S. Y., Davidoff, A.: SPE Antec Tech. Papers, p. 499 (1991).10.1016/0306-3747(91)90405-BSuche in Google Scholar

7 Himasekhar, K., Lottey, J., Wang, K. K.: Trans. ASME, J. Eng. for Ind.114, p. 213 (1992).Suche in Google Scholar

8 www.moldflow.com.Suche in Google Scholar

9 Barone, M. R., Caulk, D. A.: Q. J. Mech. Appl. Math.34, p. 265 (1981).10.1093/qjmam/34.3.265Suche in Google Scholar

10 Park, S. J., Kwon, T. H.: Trans. ASME J. Manuf. Sci. and Eng.120, p. 287 (1998).10.1115/1.2830126Suche in Google Scholar

11 Chen, S.-C., Chung, Y.-C.: Int. Comm. Heat Mass Trans.19, p. 559 (1992).10.1016/0735-1933(92)90011-6Suche in Google Scholar

12 Chang, Y. P., Hu, S. Y., Chen, S. C.: Int. Comm. Heat Mass Trans.25, p. 989 (1998).10.1016/S0735-1933(98)00090-6Suche in Google Scholar

13 Hu, S. Y., Cheng, N. T., Chen, S. C.: Plastics Rubber and Composites Proc. and Appl.23, p. 221 (1995).Suche in Google Scholar

14 Chen, S.-C., Hu, S.-Y., Chao, S.-M.: Polym. Eng. Sci.40, p. 595 (2000).10.1002/pen.11190Suche in Google Scholar

15 Barros, I., Teixeira, S. F. C. F., Brito, A. M., Cunha, A. M., Teixeira, J. C. F.: Proceeding PPS 19, Guimares, Portugal (2002).Suche in Google Scholar

16 Tang, L. Q., Pochiraju, K., Chassapis, C., Manoochehri, S.: Int. J. Num. Meth. Eng.39, p. 3049 (1996).10.1002/(SICI)1097-0207(19960930)39:18<3049::AID-NME988>3.0.CO;2-XSuche in Google Scholar

17 Batkam, S., Coupey, T.: Proc. 4th Int. ESAFORM (European Scientific Assoc. for Material Forming) Conf., Liege, Belgium, p. 31 (2001).Suche in Google Scholar

18 Tang, L. Q., Chassapis, C., Manoochehri, S.: Finite Elements in Analysis and Design26, p. 229 (1997).10.1016/S0168-874X(96)00083-2Suche in Google Scholar

19 Park, S. J., Kwon, T. H.: Trans. ASME J. Manuf. Sci. and Eng.120, p. 296 (1998).10.1115/1.2830127Suche in Google Scholar

20 www.sigmasoft.com.Suche in Google Scholar

21 www.fluent.com.Suche in Google Scholar

22 Polynkin, A., Pittman, J. F. T., Belblidia, F., Sienz, J., Brookshaw, B. L., Copeland, W.: Proceeding 5th Int. ESAFORM (European Scientific Assoc. for Material Forming) Conf., Krakow (2002).Suche in Google Scholar

23 Polynkin, A., Pittman, J. F. T., Sienz, J.: Proceeding 6th Int. ESAFORM Conf., Salerno (2003).Suche in Google Scholar

24 Belblidia, F., Pittman, J. F. T., Polynkin, A., Sienz, J.: Proceeding 6th Int. ESAFORM Conf., Salerno (2003).Suche in Google Scholar

25 Private communication with Cinpres Gas Injection Ltd. (2001).Suche in Google Scholar

26 Fishenden, M., Saunders, O. A.: An Introduction to Heat Transfer. Oxford (1950).Suche in Google Scholar

27 Illinka, F., Hetu, J. F.: Int. J. Numerical Meth. Eng.53, p. 2003 (2002).10.1002/nme.370Suche in Google Scholar

28 Manero, F., Kamal, M. R., Lai-Fook, R. A., Varela, A. E., Patterson, W. I.: Int. Polym. Process.18, p. 185 (2003).10.3139/217.1728Suche in Google Scholar

Received: 2004-1-15
Accepted: 2004-11-8
Published Online: 2013-05-02
Published in Print: 2004-12-01

© 2004, Carl Hanser Verlag, Munich

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. Polymer Processing Society at 20
  5. Mixing and Screw Extrusion
  6. Index for Simultaneous Dispersive and Distributive Mixing Characterization in Processing Equipment
  7. Determination of the Residence Time Distribution in Twin Screw Extruders via Free Radical Modification of PE
  8. On-line Visualization of PS/PP Melting Mechanisms in a Co-rotating Twin Screw Extruder
  9. Die Extrusion
  10. Influence of Filler Particle Geometry on Die Swell
  11. Reactive Processing
  12. Side Chain Extension of Maleated Polypropylene with Diamine
  13. Reactive Batch Mixing for Improved Silica-Silane Coupling
  14. Studies on NBR-ZDMA-OMMT Nanocomposites Prepared by Reactive Mixing Intercalation Method
  15. Fiber and Film
  16. High-speed Melt Spinning of Polyethylene terephthalate with Periodic Oscillation of Take-up Velocity
  17. A Constitutive Analysis of Extensional Flow of EVA Nanocomposites
  18. Laser Sintering
  19. Laser Sintering of High Temperature Resistant Polymers with Carbon Black Additives
  20. Molding
  21. Flow Visualization of Filling with Aid of Colored Billets During Impact Micro-Injection Molding
  22. Modelling of Cyclic 3-Dimensional Heat Transfer in Injection Moulding
  23. PPS News
  24. PPS News
https://doi.org/10.3139/217.1850

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. Polymer Processing Society at 20
  5. Mixing and Screw Extrusion
  6. Index for Simultaneous Dispersive and Distributive Mixing Characterization in Processing Equipment
  7. Determination of the Residence Time Distribution in Twin Screw Extruders via Free Radical Modification of PE
  8. On-line Visualization of PS/PP Melting Mechanisms in a Co-rotating Twin Screw Extruder
  9. Die Extrusion
  10. Influence of Filler Particle Geometry on Die Swell
  11. Reactive Processing
  12. Side Chain Extension of Maleated Polypropylene with Diamine
  13. Reactive Batch Mixing for Improved Silica-Silane Coupling
  14. Studies on NBR-ZDMA-OMMT Nanocomposites Prepared by Reactive Mixing Intercalation Method
  15. Fiber and Film
  16. High-speed Melt Spinning of Polyethylene terephthalate with Periodic Oscillation of Take-up Velocity
  17. A Constitutive Analysis of Extensional Flow of EVA Nanocomposites
  18. Laser Sintering
  19. Laser Sintering of High Temperature Resistant Polymers with Carbon Black Additives
  20. Molding
  21. Flow Visualization of Filling with Aid of Colored Billets During Impact Micro-Injection Molding
  22. Modelling of Cyclic 3-Dimensional Heat Transfer in Injection Moulding
  23. PPS News
  24. PPS News
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