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Yaygın plastik malzeme zorluklarına pratik yanıtlar

Makalelere Göz At →
1506 soru
Q
Mold temperature differences in different areas affect product quality
A
Mold temperature gradient needs to be set according to area and material characteristics
Molds & Tooling mold temperature gradientregional temperature differencecrystallizationPA
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Q
Yellow-brown or black specks appear locally on the product
A
Burnt is caused by overheating degradation or poor venting
Molds & Tooling burntcarbonizationthermal degradationventing
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Q
Obvious depressions at thick-wall areas of the product (rib roots, back of bosses)
Q
PVA product elliptical deformation
A
Elliptical deformation is caused by asymmetric demolding force; uniform ejection is the key
Molds & Tooling PVAelliptical deformationsymmetric ejectionuniform coolingsetting time
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Q
PVA product twist deformation
A
Twist deformation is caused by asymmetric cooling; symmetric cooling is the key
Molds & Tooling PVAtwist deformationsymmetric coolinggate arrangementannealing
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Q
Insufficient PVA flatness
A
Insufficient flatness is caused by shrinkage difference and stress; uniform cooling and annealing are the key
Molds & Tooling PVAflatnessshrinkage differenceuniform mold temperatureannealing treatment
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Q
PVA internal shrinkage voids
A
Shrinkage voids are caused by thick-wall shrinkage and insufficient holding; extending holding is the key
Molds & Tooling PVAshrinkage voidthick wallholding timegate freezing
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Q
Poor PVA fatigue resistance
A
Poor fatigue resistance is caused by insufficient recovery and fast crack propagation; increasing crosslinking is the key
Molds & Tooling PVAfatigue resistancecrosslinking degreemolecular weightstress concentration
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Q
PVA angle deviation
A
Angle deviation is caused by shrinkage and insufficient design compensation; pre-compensation is the key
Molds & Tooling PVAangle deviationshrinkage compensationmold designfull cooling
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Q
PVA length out of tolerance
A
Length out of tolerance is caused by unstable shrinkage rate; precise shrinkage compensation is the key
Molds & Tooling PVAlength out of toleranceshrinkage ratemold compensationfull cooling
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Tüm Konular 11636 Material Drying 1439 Injection Molding 1506 Molding Process 740 Molds & Tooling 1506 Processing Machinery 2025 Extrusion & Post 2239 Blow Molding 315 Thermoforming 141 Material Analysis 1343 Production & Quality 382
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