Processing Machinery
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ASA barrel zone temperature setting
Problem Phenomenon
[Problem phenomenon] ASA barrel temperature one-size-fits-all, uneven plasticization or local overheating
Cause Analysis
ASA requires progressive zoning: rear section 215-225°C, middle section 225-245°C, front section 235-270°C, nozzle 240-280°C; zone jumping causes poor plasticization or shear overheating
Solution
Set progressively according to the Fast Heat zone table; measure melt temperature 240-280°C for calibration; nozzle matches front section to prevent cold material; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
ASA barrel progressively heats from 215 to 280°C, nozzle highest ensures filling; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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