Processing Machinery
1 views
PCL internal stress cracking
Problem Phenomenon
PCL products have large internal stress, crack during use or storage, and suffer structural failure.
Cause Analysis
PCL crystallization shrinkage internal stress; excessive cooling; excessive holding pressure; structural design sharp corners; environmental stress.；During on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
Solution
①Cooling rate control; ②Holding pressure optimization; ③Structural fillets; ④Annealing treatment; ⑤Environmental assessment.；After adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PCL internal stress management runs through process and structure; annealing is an effective release; environmental assessment prevents cracking.；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
Was this helpful?
0 people found this helpful
Thank you for your feedback!