Processing Machinery
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PTFE Thick-Walled Parts Insufficient Pressure
Problembeschreibung
PTFE thick-walled products have insufficient internal density, loose centers, and poor mechanical strength and sealing performance.
Ursachenanalyse
Thick-walled parts need higher molding pressure, taking the high value of 20~50MPa; pressure transfer decays with thickness; holding pressure time needs to be extended with thickness; equipment pressure capability limitation.
Lösung
①Take the high value of 20~50MPa molding pressure for thick-walled parts; ②Extend holding pressure time to ensure pressure transfer; ③Calculate equipment pressure capability; ④Section density inspection of thick-walled parts.
Wichtigste Erkenntnis
PTFE thick-walled part pressure management should take the high value of the range; pressure transfer decay needs holding pressure compensation; section inspection is a verification means.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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