Molding Process
8 görüntüleme
PPS wall thickness design upper limit
Sorun Belirtisi
Thick-walled PPS products have shrinkage cavities and internal cracks in the center, cross-section strength unqualified
Neden Analizi
PPS wall thickness should not exceed 7-10mm: insufficient feeding at the thick-wall center forms shrinkage cavities; and rapid cooling of the surface layer and slow cooling inside produce internal stress cracks; thick-wall design requires special caution
Çözüm
①Wall thickness controlled within 7-10mm; ②strengthen holding pressure feeding in thick-wall areas; ③internal crack parts hot water annealed to eliminate stress; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Temel Çıkarım
PBT thick wall is the structural forbidden zone of PPS; 7-10mm upper limit plus holding pressure feeding, cracks remedied by annealing; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
Bu faydalı oldu mu?
0 kişi bunu faydalı buldu
Geri bildiriminiz için teşekkürler!