Material Drying
8 visualizaciones
Glass Fibre '2079851475616104452 thick-wall bubbles
Fenómeno del problema
Glass Fibre injection molded thick-wall product has dense bubbles 0.1-0.5mm inside, concentrated at wall thickness center
Análisis de la causa
Holding pressure insufficient <40MPa or holding time short, thick-wall center not compacted; raw material contains moisture; injection speed too fast entrains air; mold venting poor
Solución
1) Raise holding pressure to 60-80MPa; 2) extend holding time to fully compact thick wall; 3) fully dry raw material to moisture <0.02%; 4) add vent grooves or vent pins to mold; 5) gradually decelerating injection to avoid air entrainment
Conclusión clave
Thick-wall bubbles are comprehensively caused by insufficient holding pressure, moisture and poor venting
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!