Material Drying
2 Aufrufe
PMMA Thick-Wall Part Internal Bubbles/Voids
Problembeschreibung
Internal holes in thick-wall transparent parts.
Ursachenanalyse
Thick walls cool slowly, and core shrinkage forms vacuum bubbles; or insufficient drying.
Lösung
①Verify drying; ②Extend holding pressure and slow cooling; ③Reduce material in thick walls; ④Optimize mold temperature.
Wichtigste Erkenntnis
Thick-wall bubbles = two divisions: water and vacuum.
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