Material Drying
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Difference between mold flow analysis results and actual products needs optimization
Problem Phenomenon
Difference between mold flow analysis results and actual products needs optimization
Cause Analysis
Mold flow analysis parameters (viscosity model) do not match cellulose acetate butyrate actual behavior
Analysis did not consider the influence of cellulose acetate butyrate crystallization behavior on flow
After gate position analysis and optimization, weld lines still exist in reality
Holding analysis prediction inconsistent with actual shrinkage depressions
Analysis did not consider viscosity change of PA types after moisture absorption
Solution
Use cellulose acetate butyrate dedicated viscosity model parameters
Set analysis parameters considering crystallization behavior
Verify analysis results against actual products
Correct analysis parameters according to actual products
PA types need to consider viscosity at different moisture contents
Key Takeaway
Mold flow analysis requires material-specific parameters
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