Production & Quality
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Surface microcracks of EAA
Fenómeno do problema
Microcracks of 0.05-0.2mm appear on the surface of EAA products, affecting appearance and strength
Análise das causas
The internal stress of EAA products is too large, exceeding the yield stress of the material; environmental stress cracking; stress concentration in product design
Solução
1) Annealing treatment to release internal stress; 2) Design the product to avoid sharp corners and stress concentration; 3) Select high molecular weight EAA to improve crack resistance
Conclusão principal
Microcracks are caused by excessive internal stress; annealing and crack-resistant design are the key
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