Material Drying
7 visualizações
PA66 stress whitening
Fenómeno do problema
White marks appear at impact locations of PA66 products
Análise das causas
Silver-streaking in the impact zone scatters light and appears white, and insufficient toughness in dry state at low temperature makes it more likely; during on-site troubleshooting, verify item by item according to this mechanism, avoiding blindly adjusting the machine based only on experience
Solução
Moisture condition products to restore toughness; avoid dry-state low-temperature impact; avoid sharp corners in structure; select toughened grades for high toughness requirements; after adjustment, take continuous samples to verify the effect, confirm stability before resuming mass production
Conclusão principal
Stress whitening indicates insufficient toughness reserve, moisture conditioning and toughening treat the symptom; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!