Hi @lance.xi ,
as seen in provided information there is a short shot.
The cavity cannot be filled in the current circumstances, process settings.
I assume this is Reactive Molding process, with filling and packing control, right?
What happens is that it reaches maximum injection pressure (not sure what it is set to, but default is 180MPa).
It then switches to use maximum pressure. (the limit could be pressure or clamp force)
This pressure is too low to fill cavity.
The flow front hesitates, and cures, and causes the short shot.
So process conditions and/or part design to be changed.
- check advanced options: what is the limit of injection molding machine : hydraulic unit and clamping unit.
Is it sufficient for the part design?
- what does clamp force result look like? peak pressure, spike clamp force
- what does injection pressure profile result look like? a spike?
- faster fill? Maybe set injection time is too slow?
- Any reason for curing happen too soon?
Not so easy to have a clear cut of the underlying reason for the short shot.
But first I would check the filling time, if it is too long, and causing the issue.
This could probably be done on a simplified part geometry, to investigate a descent molding window,
and process conditions.
Hope this helps somewhat.
Regards,
Berndt
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