The impact of injection mold’s gate modification on the quality of PC/ABS blend using CAE simulation
DOI:
https://doi.org/10.15282/jmmst.v5i2.6652Keywords:
Injection Molding, PC/ABS parts, Mold's design, Defects, CAE simulationAbstract
PC/ABS blend is widely used in producing the automotive components due to its thermal and mechanical properties. However, variations in the process condition can have an effect on its properties. Finding the optimal injection process parameters plays a very important role in controlling the quality and the mechanical properties of the molded parts. A material temperature of 260 °C, an injection pressure of 50 bar, a holding time of 8 s and a mold temperature of 60 °C are the optimal combination parameters yielded a better shear stress and no injection defects. These results were found in our previous work and confirmed using the Taguchi method and SolidWorks Plastics. Moreover, factors affecting on the part’s quality can be essentially the injection parameters or the mold cavity. This paper presents a simple way to investigate the impact of a modification in the mold’s gate size system on injected PC/ABS parts’ quality. Optimal parameters are tested via SolidWorks simulation to explore the defects occurring following this modification. This study outcomes show some defects with the new mold’s gate size like weld lines and the residual stresses, also a high inlet pressure achieved compared to the actual mold’s gate.
References
V. Panneerselvam, F. M. Turan, “Optimization of Process Parameters of Injection Moldings for Plastic Pallets Manufacturing Industry,” Journal of Modern Manufacturing Systems and Technology., 2, pp. 75-83, 2019.
A. Salimi , M. Subaşı, and L. Buldu, “Prediction of flow length in injection molding for engineering plastics by fuzzy logic under different processing conditions, ” Iranian Polymer Journal., 22(1), pp. 33-41, 2013, doi 10.1007/s13726-012-0103-5.
M. Amran, M., Salmah, S., Zaki, “The effect of pressure on warpage of dumbbell plastic part in injection moulding machine,” Advanced Materials Research., 903, pp. 61-66, 2014, doi:10.4028/www.scientific.net/amr.903.61.
N. R. Subramanian, L.Tingyu, Y. A. Seng, “Optimizing warpage analysis for an optical housing,” Mechatronics., 15(1), pp. 111-127, 2005, doi.org/10.1016/j.mechatronics.2004.05.004S.
M. Altan, “Reducing shrinkage in injection moldings via the Taguchi, ANOVA and neural network method,” Materials & Design., 31(1), pp. 599-604, 2010, doi.org/10.1016/j.matdes.2009.06.049.
P.P. Shinde, S. Awati, P. Suryavanshi, “Design of feed system of plastic injection mold for housing retainer,” Journal of Emerging Technologies and Innovative Research (JETIR)., Vol. 6, March 2019, Issue 3.
M. Moayyedian, K. Abhary, R. Marian, “Elliptical cross sectional shape of runner system in injection mold design,” International Journal of Plastics Technology., 20(2), pp. 249-264, 2016.
M. Moayyedian, K. Abhary, R. Marian, “Improved gate system for scrap reduction in injection molding processes,” Procedia Manufacturing., 2, pp. 246-250, 2015.
W. Dai, P. Liu, X.Wang , “An improved mold pin gate and its flow pattern in the cavity,” Journal of Injection Molding Technology., 6(2), 115, 2002.
P. Jones, “The Mould Design Guide,”Smithers Rapra Technology Limited, 2008.
H. Hassan, N. Regnier, G. Defaye, “A 3D study on the effect of gate location on the cooling of polymer by injection molding,“ International Journal of Heat and Fluid Flow., 30(6), pp. 1218-1229, 2009, doi.org/10.1016/j.ijheatfluidflow.2009.06.005.
V. V. Andhalkar, D. S. Dulange, “Injection molding methods design, optimization, Simulation of plastic flow reducer part by mold flow analysis,” International Research Journal of Engineering and Technology (IRJET) e-ISSN., vol. 04, June, pp. 1742-1746, 2017.
M. Moayyedian, K. Abhary, R. Marian, “New design feature of mold in injection molding for scrap reduction,“ Procedia manufacturing., 2, pp. 241-245, 2015. doi.org/10.1016/j.promfg.2015.07.042
G. Titomanlio, K. M. B. Jansen, ”In‐mold shrinkage and stress prediction in injection molding,“ Polymer Engineering & Science., 36(15), pp. 2041-2049, 1996, doi.org/10.1002/pen.10599
D. C. Angstadt, J. P. Coulter, ”Cavity pressure and part quality in the injection molding process,“ Intell Mater Manuf Lab., Lehigh University, Pennsylvania, USA, 1999.
T.T. Hsu, “Study on simulation and optimization in injection molding of plastic aspherical lens,“ Master’s Thesis, Feng Chia University., Taiwan, ROC, 2004.
S. Rajalingam et al., “A statistical experimental study on shrinkage of injection-molded part, ” International Journal of Humanities and Management Sciences (IJHMS)., Vol. 1, Issue 1, pp 2320–4044, 2013.
S. Jianga et al., “An implicit control-volume finite element method and its time step strategies for injection molding simulation,“ Computers and Chemical Engineering., vol. 31, pp. 1407-1418, 2016.
M. K. Koya, K. S. Prasad, M. S. Krishna, ”DFM & SIMULATION for injection mould of knob,“ International Journal of Mechanical and Production Engineering Research and Development (IJMPERD)., vol. 9, Issue 5, pp. 265–276, 2019.
F. Hentati, I. Hadriche, N. Masmoudi, C. Bradai, “Optimization of the injection molding process for the PC/ABS parts by integrating Taguchi approach and CAE simulation,“ The International Journal of Advanced Manufacturing Technology., ISSN 0268-3768, 2019, doi.org/10.1007/s00170-019-04283-z.
J.P. Beaumont, “Runner and Gating Design Handbook,“.Hanser Gardner Publications., 2004:
W. Dai, P. LIU, X. WANG, “An improved pin gate and its flow pattern in the cavity,“ Journal of Injection Molding Technology., vol.2, Issue 2, p. 115, 2002.
D. A. R.. Calhoun, J. Golmanavich, “Injection Molding Processing And Troubleshooting,“ 2002.
J. Q. Li et al., “Single gate optimization for plastic injection mold,“ Journal of Zhejiang University-Science A., pp. 1077-1083, 2007.
C. Y. Shen, “Gate location optimization in injection molding by using modified hill-climbing algorithm,“ Polymer-Plastics Technology and Engineering., pp. 649-659, 2004.
T.S. Li, SH. Chen, HL. Chen, “Thermal-flow techniques for sub-35 nm contact-hole fabrication using Taguchi method in electronbeam lithography,“ Microelectron Eng., 86, pp. 2170–2175, 2019,doi.org/10.1016/j.mee.2009.03.049.
A. Ananthanarayanan et al., “Mechanical Characterization of Cold Weld-lines and Meld Lines in Mesoscopic Revolute Joints for Bio inspired Structures,“ in Proceedings of the XIth International Congress and Exposition., Orlando, Florida USA, 2008.
SWorks, Solid works plastic (plastic databank), 2013.
A. Östergen, “Prediction of residual stresses in injection moulded parts,“ pp. 1–66, 2013.
T. Erzurumlu, B. Ozcelik B, “Minimization of warpage and sink index in injection molded thermoplastic parts using Taguchi optimization method,“ Mater Des., 27:pp. 853–861,2006, doi.org/10.1016/j.matdes.2005.03.017
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