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문제 및 해결책

일반적인 플라스틱 재료 문제에 대한 실질적인 답변

1506 질문
Q
Poor PVA surface gloss
Q
Elliptical deformation of PU products
A
Elliptical deformation is caused by asymmetric demolding force; uniform ejection is key
Molds & Tooling PU elliptical deformation symmetric ejection uniform cooling setting time
Q
Twisting deformation of PU products
A
Twisting deformation is caused by asymmetric cooling; symmetric cooling is key
Molds & Tooling PU twisting deformation symmetric cooling gate arrangement annealing
Q
Insufficient roundness of PU
A
Insufficient roundness is caused by uneven cooling; annular cooling is key
Molds & Tooling PU insufficient roundness uniform cooling gate symmetry demolding force
Q
Non-uniform internal density of PU
A
Non-uniform density is caused by uneven holding pressure; optimizing gate design is key
Molds & Tooling PU non-uniform density holding pressure transmission gate design crystallization difference
Q
Insufficient flatness of PU
A
Insufficient flatness is caused by shrinkage difference and stress; uniform cooling and annealing are key
Molds & Tooling PU flatness shrinkage difference uniform mold temperature annealing treatment
Q
Internal shrinkage voids of PU
A
Shrinkage voids are caused by thick-wall shrinkage and insufficient holding; extending holding is key
Molds & Tooling PU shrinkage void thick wall holding time gate freezing
Q
PU angle deviation
A
Angle deviation is caused by shrinkage and insufficient design compensation; pre-compensation is key
Molds & Tooling PU angle deviation shrinkage compensation mold design full cooling
Q
Poor fatigue resistance of PU
A
Poor fatigue resistance is caused by insufficient recovery and fast crack propagation; increasing crosslinking is key
Molds & Tooling PU fatigue resistance crosslinking degree molecular weight stress concentration
Q
PU length out of tolerance
A
Length out of tolerance is caused by unstable shrinkage; precise shrinkage compensation is key
Molds & Tooling PU length out of tolerance shrinkage mold compensation full cooling
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