Extrusion & Post
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Glass Fibre surface dense pits
Problembeschreibung
Glass Fibre product surface 0.1-0.3mm pits dense, affecting appearance and coating adhesion
Ursachenanalyse
Raw material contains impurity particles >0.05%; mold cavity surface damaged or corrosion pits
Lösung
1) Replace with pure raw material, impurities <0.01%; 2) repair and polish mold cavity to Ra<0.2μm; 3) filter raw material to remove particles
Wichtigste Erkenntnis
Pits are caused by raw material impurities and mold damage; pure raw material and mold maintenance are key
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