Material Drying
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PA6 Vacuum Cleaner Structural Part
Problem Phenomenon
The latch of the vacuum cleaner handle breaks when dropped
Cause Analysis
Drop impact is common during vacuum cleaner use, the latch is notch-sensitive at dry-state low temperature, and the instantaneous drop impact exceeds the fracture strength; when troubleshooting on site, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
Select toughened grades for the latch part; rounded design of the latch to reduce the notch effect; condition before assembly; verify by multi-angle 1.5-meter drop tests; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
Handheld appliance latches require toughening, conditioning, plus rounded design, and drop verification is indispensable; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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