Molding Process
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PA66 glass fiber reinforced warpage
Problembeschreibung
Glass fiber reinforced PA66 parts have warpage out of tolerance, poor flatness, and assembly datum offset
Ursachenanalyse
Glass fiber orientation makes PA66-GF30 flow-direction shrinkage 0.4-0.8% and transverse difference 0.2-0.4%, anisotropy causes warpage; uneven fiber distribution further amplifies deformation
Lösung
①Gate position makes fibers uniformly oriented along the main direction; ②Mold temperature homogenization ±2℃, conformal water circuits; ③Flat parts with straightening fixtures set for 24 hours reduce warpage by 40-60%
Wichtigste Erkenntnis
Glass fiber PA66 warpage originates from orientation anisotropy; gate design, uniform-temperature cooling, and straightening fixtures constitute a complete warpage reduction solution; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence
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