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المشاكل والحلول

إجابات عملية على التحديات الشائعة في مواد البلاستيك

11636 سؤال
Q
Product partially not filled
A
Short shot needs to be addressed from pressure, temperature, venting, and gate
Injection Molding material shortageshort shotinjection pressurefluidity
Q
Product surface has no gloss
A
Surface gloss requires improving the mold surface and increasing the mold temperature
Material Drying poor glossmold temperaturemold polishinginjection speed
Q
The sizing sleeve directly affects the pipe outer diameter accuracy and surface quality
A
The sizing sleeve requires precise dimensions and uniform cooling
Production & Quality sizing sleevepipe outer diametershrinkage ratecooling
Q
Thin-wall products with wall thickness <1mm have many short shot, warpage and deformation problems
A
Thin wall requires high-speed injection and high-flowability material
Injection Molding thin-wall injectionhigh-speed fillingflowabilitycellulose acetate butyrate
Q
Improper multi-stage speed settings produce jetting, weld lines or surface defects
A
Multi-stage speed needs optimization according to the cavity structure
Molding Process multi-stage injectionspeed controljettingfilling
Q
Product color inconsistent with the standard color plate
A
Color difference needs to be addressed from temperature, shear, drying and regrind control
Material Drying color differenceyellowingthermal degradationdispersion
Q
Thin flash appears at the parting line or moving parts of the product
Q
Gas-assisted injection is used to reduce shrinkage and warpage but parameters are set improperly
A
Gas assist requires precise timing and pressure control
Injection Molding gas-assisted injectiongas timinggas channel designcellulose acetate butyrate
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
Q
Difference between mold flow analysis results and actual products needs optimization
A
Mold flow analysis requires material-specific parameters
Material Drying mold flow analysisviscosity modelcrystallizationverification
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