Processing Machinery
6 visualizações
PPO Secondary Processing Cracks
Fenómeno do problema
[Problem Phenomenon] Cracks appear after machining and ultrasonic welding of PPO products
Análise das causas
Residual stress releases and cracks under the energy input of secondary processing; PPO can be secondarily processed but parts with internal stress are at high risk; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solução
Anneal to relieve stress before secondary processing; sharp tools and low feed for machining; optimize ultrasonic welding parameters to reduce stress; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Conclusão principal
Anneal before PPO secondary processing; energy input will awaken residual stress; 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!