Molds & Tooling
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EAA product twisting deformation
Fenómeno del problema
EAA products twisted 2-3°/100mm along the axis
Análisis de la causa
Asymmetric cooling causing shrinkage difference on each face, producing twisting moment; gate position producing asymmetric flow orientation
Solución
1) Symmetric cooling design to ensure uniformity on each face; 2) Symmetric gate arrangement; 3) Anneal to release twisting stress
Conclusión clave
Twisting deformation is caused by asymmetric cooling; symmetric cooling is key
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