How to use this information:
The maximum pressure used in the process should never be equal to the maximum
available pressure at the machine. For example, if the maximum available
hydraulic pressure is 2200 psi, then the end of fill pressure should not be
equal to 2200. If this is the case, it means that the screw needs more pressure
to move at the set injection speed and cannot do so because of the limited
pressure. Such a condition is called ‘Pressure Limited’. Typically, you should
a maximum of about 90% of the maximum available pressure. Therefore in this
case, where the maximum is 2200, the end of fill pressure should not be more
than 1980 psi.
In the generated graph, if you are pressure limited or more than 90% of the
maximum, look for steep increases in the pressure and try to reduce these. For
example, If the secondary runner section shows a steep increase, then this
means it takes a lot of force to move the plastic through this section.
Increasing the diameter of the runner will help in reducing this