Injection Molding
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Abnormal pressure curve reflects process or equipment problems
Problem Phenomenon
Abnormal pressure curve reflects process or equipment problems
Cause Analysis
Pressure curve peak too high, clamping force insufficient, flash
Pressure curve low, injection pressure insufficient, short shots
Large pressure curve fluctuation, hydraulic system unstable
Holding pressure section pressure decays too fast, gate freezes prematurely
Pressure sensor failure, inaccurate data
Solution
If the pressure peak is too high, reduce injection speed or increase clamping force
If the pressure is low, increase injection pressure
Stabilize the hydraulic system
Extend gate freezing time to prevent holding pressure decay
Calibrate the pressure sensor
Key Takeaway
Pressure monitoring requires stable hydraulics and calibrated sensors
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