Production & Quality
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MP surface microcracks
Problem Phenomenon
MP product surface shows 0.05-0.2mm microcracks, affecting appearance and strength
Cause Analysis
MP product internal stress too large, exceeding the material yield stress; environmental stress cracking; product design stress concentration
Solution
1) annealing to release internal stress; 2) product design avoiding sharp corners and stress concentration; 3) select high molecular weight MP to improve crack resistance
Key Takeaway
microcracks are caused by excessive internal stress; annealing and crack-resistant design are key
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