Processing Machinery
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PC nozzle temperature management
Problem Phenomenon
【Problem Phenomenon】PC nozzle drooling or cold slug, improper temperature setting
Cause Analysis
PC nozzle temperature is slightly lower than the front zone to prevent drooling but cannot be too low to cause cold slug; 295-310℃ range adjusted by grade；During on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
Solution
Nozzle temperature 5-10℃ lower than the front zone; drooling verified by lowering 5℃; cold slug verified by raising 5℃；After adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PC nozzle temperature seeks balance, drooling and cold slug each take a step back；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
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