In this task you review the press displacement results of the compression molding process to determine the quality of the part. For this exercise you evaluate if the process settings are adequate to obtain the part thickness within 3% of the design thickness which is the tolerance set for this part.
To review the Press displacement: XY plot:
Click Press displacement:XY Plot in the Study Tasks list.
The Press displacement:XY Plot result shows the distance the press moved, measured from the reference (initial) location, to the final location at the end of the compression phase, when the mold-cavity space has been reduced (compressed), displayed on an XY plot of distance versus process time.
Use the following equation to determine how closely your final molded part thickness approximates your design thickness.
Design thickness + press open distance (input) - press displacement (result) = Final molded part thickness (which should be within the design thickness tolerance).
Design thickness =
Press open distance =
Press displacement =
Calculate the final molded part thickness
Design thickness + press open distance (input) - press displacement (result) = final molded part
____ + ____ - ____ = ____
Calculate the difference in percentage
[(Final molded part thickness - design thickness)/design thickness] *100
[(____ - ____ )/ ____ ] * 100 = ____%
If the part thickness is supposed to be within 3% of the design thickness, did the results show this?
Parent topic: Compression Molding
Previous topic: Review the press speed results of the compression molding process
Next topic: Tutorial review