Molding Process
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MP processing temperature fluctuation
Problem Phenomenon
during MP processing temperature fluctuates ±5-8°C, exceeding the ±2°C control accuracy
Cause Analysis
temperature control system PID parameters improper; heater bands aged, power uneven; thermocouple position improper, measurement deviation
Solution
1) retune PID parameters; 2) replace aged heater bands; 3) adjust thermocouple position to the melt pool center
Key Takeaway
temperature fluctuation is caused by an improper temperature control system; PID tuning and heater band replacement are key
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