Study on the air heating process of the injection mold for the meshing product
Corressponding author's email:
minhps@hcmute.edu.vnKeywords:
Injection molding, local heating, gas assisted mold heating, temperature controlAbstract
For the injection molding process, the high mold temperature shows many advantages with the product quality. However, higher mold temperature will lead to the longer cooling time. Therefore, the external gas assisted mold temperature control (Ex-GMTC) is presented for raising the mold surface temperature in the filling step, and let the cooling step doesnot too long. In this research, the Ex-GMTC was achieved with a real mold. The experimental results show that, with the local heating area, when the gas temperature rose from 200 oC to 400oC, the stable temperature of the mold surface increased from 90oC to 160oC. By simulating with ANSYS CFX, the heating process could be predicted within the the error was lower than 10oC. Besides, the mold temperature of the local heating could be observed clearly based on the numerical analysis.
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References
T. Osswald, S. Turng and P. Gramann, Injection Molding Handbook, NXB Hanser; Ohio – USA, 2nd Edition, (2008), 764 trang.
http://www.dc.engr.scu.edu/cmdoc/fp_doc/f5co1.frm.html
A. I. Isayev, T. H. Lin and K. Kon, Frozen-in birefringence and anisotropic shrinkage in optical moldings: II. Comparison of simulations with experiments on light-guide plates Polymer, Vol 51, 2010, pp.5623-5639
S. C. Chen, J. A. Chang, Y. C. Wang, C. F. Yeh, Development of Gas-Assisted Dynamic Mold Temperature Control System and Its Application for Micro Molding: ANTEC, 2008, pp. 2208 – 2212
G. Wang, G. Zhao, Hu. Li, Y. Guan, Research of thermal response simulation and mold structure optimization for rapid heat cycle molding processes, respectively, with steam heating and electric heating, Materials and Design Vol 31, 2010, pp. 382–395
G. Wang, G. Zhao, X. Wang, Development and evaluation of a new rapid mold heating and cooling method for rapid heat cycle molding, International Journal of Heat and Mass Transfer Vol. 78, 2014, pp. 99 - 111
S. C. Chen, H. M. Li, S. S. Hwang and H. H. Wang, Passive mold temperature control by a hybrid filming - microcellular injection molding processing, International Communications in Heat and Mass Transfer, Vol 35, 2008, pp. 822-827.
Nguyễn Phước Thiện, Trần Hồng Phúc, Đồ án tốt nghiệp “Thiết kế chế tạo module gia nhiệt bằng khí nóng cho khuôn phun ép”, ĐH SPKT Tp. HCM (2014).
A. C. Liou, R.H. Chen, C.K. Huang, C.H. Su and P.Y. Tsai, Development of a heat-generable mold insert and its application to the injection molding of microstructures Microelectronic Engineering, Vol 117, 2014, pp. 41-47.
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