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[ Last edited by gyf3100003007 on 2008-2-19 at 08:33 ]
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knightstar

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According to the research ,the residence time of melt in its slipping section has a relation of exponential decay  with its  relaxation time ratio and extrusion swell  ratio.Its mathematical relation  can be expressed by  this equation  B=Ae-t/r£¨A¡Ö0.2~0.8£©.In fact ,melt in the slipping section is in the process of deformation decay.Theoretical analysis and numerical simulation match  well,so the equation can be used as a  guidence in the design of gas-assisted dies
Totheworldyoumaybeoneperson,buttoonepersonyouaretheworld.
3Â¥2008-02-19 14:39:03
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xhzyyangyang

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The results show that: melt in the slip of the residence time and materials and the ratio of relaxation time than extrudate swell between exponential decay, the mathematical equation can be used between B = Ae-t / r (A ¡Ö 0.2 to 0.8) , and its essence is to melt in a slip deformation of the decay process. Theoretical analysis and numerical simulation with a high degree of consistency, the equation can be used to guide design of gas-assisted die.
2Â¥2008-02-19 13:54:44
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knightstar

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