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المشاكل والحلول

إجابات عملية على التحديات الشائعة في مواد البلاستيك

1506 سؤال
Q
Compression molding is used to reduce warpage and internal stress but the parameters are set improperly
A
Compression molding requires precise timing and force control
Injection Molding compression moldingcompression timingwarpage reductioncellulose acetate butyrate
Q
Large shrinkage difference between the melt flow direction and the perpendicular direction
A
Orientation warpage requires reducing orientation and promoting relaxation
Injection Molding orientation warpageanisotropymolecular orientationannealing
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
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
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
Irregular deformation of the product after demolding
Q
Linear marks appear around multiple gates or holes of the product
Q
Glass fiber PA requires special process parameters to avoid floating fiber and property fluctuation
A
Glass fiber PA requires medium speed and high mold temperature
Injection Molding glass fiber PAinjection speedfloating fibermold temperature
Q
Front zone temperature directly affects the temperature and flowability of the melt entering the cavity
A
Front zone temperature needs stable control near the recommended upper limit
Injection Molding front zone temperaturemelt temperaturethermal stability
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