Molds & Tooling 3 Aufrufe

EVA product twist deformation

Problembeschreibung

EVA product twists 2-3°/100mm along the axis

Ursachenanalyse

Asymmetric cooling causing shrinkage differences on each face producing a twisting moment; gate position producing asymmetric flow orientation

Lösung

1) Symmetric cooling design to ensure uniformity on all faces; 2) Symmetric gate arrangement; 3) Annealing to release twisting stress

Wichtigste Erkenntnis

Twist deformation is caused by asymmetric cooling; symmetric cooling is key

EVA twist deformation symmetric cooling gate arrangement annealing

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