Processing Machinery
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PMMA Poor Ultrasonic Welding
Fenómeno del problema
Ultrasonic weld has insufficient strength or flash, and appearance is damaged.
Análisis de la causa
Welding parameters do not match the energy director design; PMMA has high rigidity and different vibration transmission characteristics, and copying parameters from other materials easily fails.; During on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based on experience alone.
Solución
①Optimize energy director design; ②tune welding energy and time; ③control welding pressure; ④perform welding strength verification.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability.
Conclusión clave
PMMA welding requires dedicated parameter development; matching of energy director and energy is the quality key.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.
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