A 3D Numerical and Empirical Study on the Effects of Injection Pressure and Temperature on the Quality of Produced Mold

Authors

Department of Mechanical Engineering, Tafresh University, Tafresh, Iran

Abstract

Plastic injection is a method in which, with using an extruder in granules, plastic is injected in a hole with high pressure. Because of meeting the two flow fronts in this process welding line will be made. Along the welding line the strength of produced part is low; therefore the position of welding line and its clarity are very important. In this paper, analyzes have been done with Fluent and Mold Flow softwares. In addition, verification of these analyzes have been done with practical experiments in order to study the effect of injection pressure and temperature on the welding line and its clarity. The materials used in these experiments are ABS and PP. Results show that applying different injection pressure and temperatures affects the strength of the produced part.

Keywords

References

1.     Hu, W. and Masood, S., "Development of an intelligent cavity layout design system for injection molding dies (research note)", International Journal of Engineering-Transactions A: Basics,  Vol. 15, No. 4, (2002), 339.
2.     Shahmiri, M. and KHARAZI, Y., "The effects of gating systems on the soundness of lost foam casting (lfc) process of al-si alloy (a. 413.0)",  Vol., No., (2007).
3.     Abbassi, A. and Shahnazari, M., "Numerical modeling of mold filling and curing in non-isothermal rtm process", Applied thermal engineering,  Vol. 24, No. 16, (2004), 2453-2465.
4.     Crisan, N., Descartes, S., Berthier, Y., Cavoret, J., Baud, D. and Montalbano, F., "Tribological assessment of the interface injection mold/plastic part", Tribology International,  Vol. 100, No., (2016), 388-399.
5.     Park, H.-S. and Dang, X.-P., "Development of a smart plastic injection mold with conformal cooling channels", Procedia Manufacturing,  Vol. 10, No., (2017), 48-59.
6.     Dotta, A.L.B., Costa, C.A. and Farias, M.C.M., "Tribological behavior of alumina obtained by low-pressure injection molding using factorial design", Tribology International,  Vol. 114, No., (2017), 208-220.
7.     Sardarian, M., Mirzaee, O. and Habibolahzadeh, A., "Influence of injection temperature and pressure on the properties of alumina parts fabricated by low pressure injection molding (lpim)", Ceramics International,  Vol. 43, No. 6, (2017), 4785-4793.
8.     Ronkay, F., Molnar, B. and Dogossy, G., "The effect of mold temperature on chemical foaming of injection molded recycled polyethylene-terephthalate", Thermochimica Acta,  Vol. 651, No., (2017), 65-72.
9.     Jiang, J., Wang, S., Sun, B., Ma, S., Zhang, J., Li, Q. and Hu, G.-H., "Effect of mold temperature on the structures and mechanical properties of micro-injection molded polypropylene", Materials & Design,  Vol. 88, No., (2015), 245-251.
10.   Gahleitner, M., "Melt rheology of polyolefins", Progress in polymer science,  Vol. 26, No. 6, (2001), 895-944.
11.   Saint-Martin, G., Schmidt, F., Devos, P. and Levaillant, C., "Voids in short fibre-reinforced injection-moulded parts: Density control vs. Mass control", Polymer testing,  Vol. 22, No. 8, (2003), 947-953.
12.   Hameed, T. and Hussein, I.A., "Rheological study of the influence of mw and comonomer type on the miscibility of m-lldpe and ldpe blends", Polymer,  Vol. 43, No. 25, (2002), 6911-6929.
13.   Hatzikiriakos, S.G., "Long chain branching and polydispersity effects on the rheological properties of polyethylenes", Polymer Engineering & Science,  Vol. 40, No. 11, (2000), 2279-2287.
International Journal of Engineering
Volume 31, Issue 3
TRANSACTIONS C: Aspects
March 2018
Pages 487-494

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