Processing Machinery
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POM Welding Difficulty
Problem Phenomenon
Insufficient ultrasonic welding strength of POM parts
Cause Analysis
POM has high crystallinity and narrow melting point, so the welding energy window is narrow and weld strength is unstable; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
Optimize energy director design on welding surfaces; finely calibrate welding parameters; switch to hot plate welding or snap-fit if necessary; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
POM's welding window is narrow—structural design must compensate; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems
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