Extrusion & Post
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PLA 3D Printing Interlayer Strength
Problem Phenomenon
Weak interlayer bonding of printed parts.
Cause Analysis
Insufficient interlayer temperature causes poor fusion; too-fast cooling affects interlayer diffusion.; 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
①Increase nozzle temperature; ②Reduce the cooling fan; ③Reduce layer height; ④Optimize printing speed.; After adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Interlayer strength relies on the balance of temperature and cooling.; 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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