Material Drying
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Extruded pipe outer diameter dimension unstable
Fenómeno do problema
Extruded pipe outer diameter dimension unstable, fluctuates over time or between batches beyond tolerance
Análise das causas
Unstable haul-off speed
Extrusion temperature fluctuation
Unstable cooling water temperature
Screw speed fluctuation
Raw material moisture change
Solução
Stabilize haul-off speed
Stabilize the extrusion temperature to 170-230°C
Control cooling water temperature
Stabilize screw speed
Strictly control raw material moisture
Conclusão principal
Pipe outer diameter fluctuation requires stable process parameters
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