Processing Machinery
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Density and Weight of PLA Products
Problem Phenomenon
Product weight deviation.
Cause Analysis
PLA density is about 1.21~1.25; process fluctuations affect weight.; During on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
Solution
①Stabilize process parameters; ②Check metering; ③Weigh by batch; ④SPC monitoring.; After adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes, making it easier to identify effective measures
Key Takeaway
Weight is the stability window.; 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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