In this paper

the steel reinforced plastics pipe-T-joint tube was taken as an example

the processing of injection molding was simulated and analyzed with Moldflow software

then the melt flow was researched

so the designer of mold can intuitionisticly see the appearance of the melt flowing in the cavity. By simulating and ana- lyzing

fill time

pressure curve

temperature distributing

weld lines

air traps

shear rate etc parameters were got. All these parameters will provide evidence for the design and machining of mold and setting of product in molding. So accordingly

the blindness of mold design is avoided

the cost is reduced and the exploit-apply period of mold is shortened.