Molds & Tooling
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Twisting Deformation of CMC Products
Problem Phenomenon
CMC products twist 2-3°/100mm along the axis
Cause Analysis
Asymmetric cooling causes shrinkage differences on each face, producing twisting torque; gate position produces asymmetric flow orientation
Solution
1)Symmetric cooling design to ensure uniformity of each face; 2)Symmetric gate arrangement; 3)Annealing to release twisting stress
Key Takeaway
Twisting deformation is caused by asymmetric cooling; symmetric cooling is the key
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