Extrusion & Post
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PC Silver Streaks Reappearing After Post-Processing
Fenómeno del problema
PC parts develop fine cracks after machining or polishing.
Análisis de la causa
Internal stress is released after mechanical processing removes the surface constraint, superimposed with processing heat and tool stress to induce cracks.
Solución
①Reduce '2079851475616104452 residual stress (low holding pressure, high mold temperature); ②Anneal before processing; ③Use sharp tools, small feed, and sufficient cooling for processing.
Conclusión clave
Reduce internal stress first, then machine.
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