Material Drying
3 Aufrufe
Pinhole defect of powder coating
Problembeschreibung
Dense pinholes appear in powder coating, anti-corrosion performance decreases
Ursachenanalyse
Powder absorbs moisture, high water content, uneven electrostatic deposition
Lösung
Pre-dry powder at 80-100C for 2h, store sealed
Wichtigste Erkenntnis
Powder moisture is the main source of coating pinholes
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