Processing Machinery
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PET lamp holder
Problem Phenomenon
PET lamp holders yellow and become brittle after long-term use
Cause Analysis
Long-term action of lamp heat and ultraviolet rays ages PET; high-power lamps have higher temperature rise; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
Select heat-resistant grades for high-power lamp holders or switch to PBT/PC; optimize the heat dissipation structure of the lamp holder; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Lamp holder materials are selected according to lamp temperature rise; PET is limited to low power; after confirming effectiveness, fix 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
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