Molds & Tooling 4 조회수

Twisting deformation of PU products

문제 현상

PU products twist 2-3°/100mm along the axis

원인 분석

Asymmetric cooling causes shrinkage differences on each face, producing twisting moment; gate position produces asymmetric flow orientation

해결 방법

1) Symmetric cooling design to ensure uniformity of each face; 2) Symmetrical gate arrangement; 3) Annealing to release twisting stress

핵심 요약

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

PU twisting deformation symmetric cooling gate arrangement annealing

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