Injection Molding
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PARA Holding Pressure and Time
Fenómeno del problema
PARA holding is set improperly; contradiction between sink marks and internal stress, pressure and time lack basis.
Análisis de la causa
PARA holding pressure 500~1500bar specific pressure; holding time adjusted by wall thickness; maximizing part weight as the target; switch from injection to holding at 95~99% filling.
Solución
①Holding pressure in the 500~1500bar range; ②Optimize holding time by wall thickness; ③Part weight maximization as the target; ④Switch to holding at 95~99% filling.
Conclusión clave
PARA holding's 500~1500bar and 95~99% switch point are precise guidance; weight maximization is the optimization target; switch timing affects quality.
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