Molds & Tooling
6 مشاهدة
PVA length out of tolerance
ظاهرة المشكلة
PVA product length deviation >±0.5mm, out of tolerance
تحليل الأسباب
PVA shrinkage rate unstable, fluctuating ±0.5%; mold dimension design did not consider shrinkage compensation; insufficient cooling, dimensions not stabilized
الحل
1) Precisely measure the PVA shrinkage rate and compensate the mold; 2) Full cooling to ensure dimensional stability; 3) Annealing treatment to eliminate post-shrinkage
الخلاصة الأساسية
Length out of tolerance is caused by unstable shrinkage rate; precise shrinkage compensation is the key
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