Cool Analysis - Time to reach ejection temperature.

[burakerkan]

Hi Everyone,

When I set the "Injection,Packing,Cooling Time" as automatic, Moldflow wants a target mold temperature. So how can I adjust the initial mold temperature or how many degrees Celsius does the program assume?

[bernor_mf]

Hi @burakerkan ,
when you set "Injection+Packing+Cooling Time" as Automatic,
next to it, there is button "Edit target ejection critera..."
where you set the Mold surface temperature, and some additional parameters.

Specified and automatic cooling time in a Cool analysis

The automatic analysis calculates the cycle time based on two parameters:
Achieving a target mold temperature within 1ºC.
The percentage of the part that is frozen.

Regards,
Berndt

[burakerkan]

Thank you for your comment bernor_mf,

So how many degrees celcius is the initial temperature assumed for target mold temperature?

All the best.

[bernor_mf]

Hi @burakerkan ,

it uses the inlet temperatures for cooling circuits and the target of mold surface temperature.

And the melt temperature to iterate to mold surface temperature result.

Inlet temperature of cooling circuits for this is important, and to have a decent starting point.

If inlet temperature of cooling circuits are too high (to close to mold surface temperature) it might not converge and/or you get very long cooling times.

Typically in cooling you set inlet temperature of cooling circuits 10-20C lower than the desired mold temperature.

Regards,

Berndt

[burakerkan]

Hi bernar_mf,

Initial temperature is a correlation of coolant temperature, target mold surface temperature and melt temperature. Did I get right?

Best regards.

[bernor_mf · Accepted solution]

Hi @burakerkan  ,

generally : for cool analysis to be able to iterate, it has a starting point such as:
- cavity is instantaneously filled with melt at melt temperature
- the set coolant inlet temperature is used.

It then iterates to calculate mold surface temperature.

For "Injection+Packing+Cooling Time" it uses specified time as parameter.

For Cool Automatic:
It iterates to reach the target mold surface temperature, with values set.
The calculate Cooling time needed,  is then a result.

Hope this clarifies.
Regards,
Berndt