Injection Molding
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Defects in wall thickness transition zones of PCTG injection products
Fenómeno do problema
Pits or stress cracks appear at wall thickness changes.
Análise das causas
Inconsistent cooling rate and shrinkage at wall thickness changes produce stress concentration.
Solução
Smoothly transition wall thickness changes; strengthen holding pressure in that zone; optimize design.
Conclusão principal
PCTG wall thickness changes are defect-prone areas.
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