Molding Process
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EAA processing temperature fluctuation
Problem Phenomenon
During EAA processing temperature fluctuates ±5-8°C exceeding ±2°C control accuracy
Cause Analysis
Improper PID parameters of the temperature control system; aged heater bands with uneven power; improper thermocouple position causing measurement deviation
Solution
1) Re-calibrate PID parameters; 2) Replace aged heater bands; 3) Adjust thermocouple position to the melt pool center
Key Takeaway
Temperature fluctuation is caused by improper temperature control system; PID calibration and heater band replacement are key
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