Injection Molding
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Improper Screw Rotation Speed in PCTG '2079851475616104452
Problem Phenomenon
Too high a screw rotation speed causes excessive shear heat and degradation, and too low a speed causes insufficient plasticization.
Cause Analysis
The screw rotation speed is not optimized according to the characteristics of PCTG, and general parameter settings are not suitable.
Solution
Set the screw rotation speed to 50-80rpm; monitor the melt temperature to prevent overheating.
Key Takeaway
The PCTG screw rotation speed needs to balance plasticization and shear heat.
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