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

作者：Liu Dong Lei^*; Shen Chang Yu; Liu Chun Tai; Xin Yong; Sun Ling

来源：Journal of Jilin University (Engineering and Technology Edition), 2012, 42(3): 665-671.

• Cooling time
• Effects of temperature
• Heat cycle
• Injection pressures
• Material synthesis and processing technology
• Mold temperatures
• Process parameters
• Processing parameters
• Upper limits
• V shape
• Warpages

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 tfollowing 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.

• 出版日期2012
• 单位郑州大学