微塑件的需求逐年增加,微注射是批量生产高精度微塑件的主要手段,但与宏观注射方法相比,制件尺寸的微小化也给微注射在理论、工艺、设备、检测等方面带来了难题.浇注系统、熔接缝的位置和数目是影响微制件质量的主要因素,本工作就此进行了数值模拟,得出了微成型与传统注射成型工艺参数的差异.结果表明:微注射成型的温度、压力和速度均高于传统注射成型,微注射成型过程中温度是保证微注射能否顺利进行的关键,微注射成型的模具温度必须高于聚合物材料的玻璃化转变温度,因此对微注射成型必须进行有效温控.
参考文献
| [1] | M. Geiger;M. Kleiner;R. Eckstein;N. Tiesler;U. Engel .Microforming[J].CIRP Annals,2001(2):445-462. |
| [2] | MICHAELI W;SPENNEAMAN A .A new injection molding technology for micro parts[J].Journal of Polymer Engineering,2001,21(2-3):87-98. |
| [3] | Ho CM.;Tai YC. .Micro-electro-mechanical-systems (MEMS) and fluid flows [Review][J].Annual Review of Fluid Mechanics,1998(0):579-612. |
| [4] | HILL S D J.Computer modeling for micro-injection molding[J].LIGA News,1995(03):9. |
| [5] | SHEN Y K;WU W Y .An analysis of the three-dimensional micro-injection mold[J].International Journal of Heat and Mass Transfer,2002,29(03):423-431. |
| [6] | YAO D;KIM B .Simulation of the filling process in micro channels for polymer material[J].Journal of Micromechanics and Microengineering,2002,12:604-610. |
| [7] | V. Piotter;K. Mueller;K. Plewa;R. Ruprecht;J. Hausselt .Performance and simulation of thermoplastic micro injection molding[J].Microsystem technologies,2002(6):387-390. |
| [8] | Hu B.H.;Tong K.K. .Design and optimisation of runner and gating systems for the die casting of thin-walled magnesium telecommunication parts through numerical simulation[J].Journal of Materials Processing Technology,2000(1/2):128-133. |
| [9] | 唐志玉.塑料模流变学设计[M].北京:国防工业出版社,1991:5-8. |
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