Processing Machinery
6 visualizações
PPO Low-Temperature Embrittlement
Fenómeno do problema
[Problem Phenomenon] PPO products become more brittle in low-temperature environments, with impact failure
Análise das causas
PPO has a high glass transition temperature, and toughness decreases at low temperature; notches and stress concentration locations are more fragile at low temperature; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solução
Conduct low-temperature impact verification for low-temperature applications; increase fillets in structural design; toughened grades cover low-temperature scenarios; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Conclusão principal
PPO toughness decreases at low temperature; low-temperature parts need both verification and toughening; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!