The Time to reach ejection temperature, part result that is produced by a Cool analysis shows the time required to reach the ejection temperature, which is measured from the start of the cycle.
At the start of the measurement, the part is assumed to be filled with material at its melt temperature (Tmelt).
The Time to reach ejection temperature is calculated on the mold wall temperature. If a part of the mold wall is above the ejection temperature (Teject) at the end of the cycle time provided, then, for a Dual Domain analysis, a warning is posted in the Analysis Log.
Ideally the part should freeze uniformly. Areas of the part that take longer to freeze may indicate hot spots, or thicker cross sections.
Look at the time difference between most of the model freezing and the last area freezing. If this difference is large, determine if the problem is caused by an increased wall thickness or a high mold temperature. If the thickness is high, consider redesigning the part. If the mold temperature is high, modify the cooling layout to eradicate the hot spots.
You can also use the Time to reach ejection temperature, part result in conjunction with the Cooling time variance result to diagnose non-uniform cooling.
This result will help you design a cooling layout for a detailed analysis of part cooling using the Cool analysis. The Time to reach ejection temperature, part result will then provide you with the suggested corrective action.
When viewing the Time to reach ejection temperature, part result, watch for the following: