Processing Machinery
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Holding Pressure Management of PLA Products
Problem Phenomenon
Sink marks and internal stress coexist.
Cause Analysis
Improper holding pressure; PLA solidification behavior is special.; During on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience; this mechanism has been repeatedly verified by industry literature and should be confirmed first during troubleshooting
Solution
①Optimize holding pressure and time; ②Set according to solidification; ③Staged holding pressure; ④Verify the balance.; After adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Holding pressure should be set according to PLA solidification characteristics.; 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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