Processing Machinery
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Machine Matching of PLA Products
Problem Phenomenon
Unstable quality.
Cause Analysis
Shot volume and residence time do not match; a small shot on a large machine causes excessive residence and degradation.; 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
①Select a suitable machine; ②Shot volume 20~80%; ③Control residence time; ④Stabilize the process.; After adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PLA is sensitive to residence time; machine matching is more important.; 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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