Production & Quality
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Surface microcracks of EAA
Fenómeno del problema
Microcracks of 0.05-0.2mm appear on the surface of EAA products, affecting appearance and strength
Análisis de la causa
The internal stress of EAA products is too large, exceeding the yield stress of the material; environmental stress cracking; stress concentration in product design
Solución
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
Conclusión clave
Microcracks are caused by excessive internal stress; annealing and crack-resistant design are the key
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