›› 2012, Vol. ›› Issue (03): 665-671.

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Macro-effect of process parameter on waspage of rapid heat cycle molding plastic part

LIU Dong-lei1,2, SHEN Chang-yu1, LIU Chun-tai1, XIN Yong2, SUN Ling2   

  1. 1. National Engineering Research Center for Application Plastic Processing Technology, Zhengzhou University, Zhengzhou 450002, China;
    2. College of Mechanical and Electrical Engineering, Nanchang University, Nanchang 330031, China
  • Received:2011-03-02 Online:2012-05-01

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Abstract: Based on the linear infinitesimal deformation thermoelasticity model Duhamel-Neumann equation, the effects of temperature factors on the residual stress of plastic parts manufactured by the rapid heat cycle molding(RHCM) were studied. An on-board blue-tooth pront shell mold and a set of accurate temperature control device were developed, and the effect of mold temperature in RHCM on warpage of the part was investigated. The results showed that the mold temperature should be under an upper limit. Under the same mold temperature, for the parameters set in the feasible range, their effects on the warpage of RHCM part decrease according the the following order: pressure keeping time, pressure keeping value, meet temperature, injection pressure, and cooling time. With the increase of mold temperature, part warpage decreases quasi-linearly. The warpage shows a modest decrease with the increase of meet temperature and injection pressure, and demonstrates a small V shape fluctuation with the increase of pressure keeping value, pressure keeping time and cooling time.

Key words: material synthesis and processing technology, rapid heat cycle molding(RHCM), processing parameter, warpage

CLC Number: 

  • TQ320.66
[1] Wang Gui-long, Zhao guo-qun, Li Hui-ping, et al. Analysis of thermal cycling efficiency and optimal design of heating/cooling systems for rapid heat cycle injection molding process［J］. Materials & Design,2010,31:3426-3441.
[2] Kim D H, Kang M H, Chun Y H. Development of a new injection molding technology: momentary mold surface heating process［J］. Journal of Injection Molding Technology,2001,5(4):229-232.
[3] Yao D, Kim B. Development of rapid heating and cooling systems for injection molding applications［J］. Polymer Engineering & Science,2002,42(12):2471-2481.
[4] Chen S C, Jong W R, Chang J A. Dynamic mold surface temperature control using induction heating and its effects on the surface appearance of weld line［J］. Journal of Applied Polymer Science, 2006,101(2):1174-1180.
[5] Chang P C, Hwang S J. Experimental investigation of infrared rapid surface heating for injection molding［J］. J Appl Polym Sci,2006,102(4):3704-3713.
[6] Chang P C, Hwang S J. Simulation of infrared rapid surface heating for injection molding［J］. Int J Heat Mass Transfer,2006, 49(21/22):3846-3854.
[7] Piotter V, Mueller K, Plewa K, et al. Performance and simulation of thermoplastic micro injection molding［J］. Microsystem Technology,2002,8(6):387-390.
[8] Su Y C, Shan J, Ian I W. Implementation and analysis of polymeric microstructure replication by micro injection molding［J］. Micromesh Microeng,2004,14(3):415-422.
[9] Yu M C, Young W B, Hsu P M. Micro-injection molding with the infrared assisted mold heating system［J］. Material Science & Engineering A,2007,460-461(15):288-295.
[10] Shen Y K, Shie Y J, Wu W Y. Extension method and numerical simulation of micro-injection molding［J］. Int Comm Heat Mass Transfer,2004,31(6):795-804.
[11] Liao S J, Chang D Y, Chen H J, et al. Optimal process conditions of shrinkage and warpage of thin-wall parts［J］. Polym Eng Sci,2004,44(5):917-928.
[12] Huang M C, Tai C C. The effective factors in the warpage problem of an injection molded part with a thin shell feature［J］. J Mater Proc Technol,2001,110(1):1-9.
[13] Shen Y K, Yeh P H, Wu J S. Numerical simulation for thin wall injection molding of fiber-reinforced thermoplastics［J］. Int Commun Heat Mass Transfer, 2001,28(8):1035-1042.
[14] Shen Y K, Liu J J, Chang C T, et al. Comparison of the results for semisolid and plastic injection molding process［J］. Int Commun Heat Mass Transfer,2002,29(1):97-105.
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