Molds & Tooling
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HDPE Mold Flow Analysis Application
Problem Phenomenon
Complex HDPE product warpage is out of tolerance after mold trial, and repeated mold repair is costly
Cause Analysis
HDPE high shrinkage and anisotropy make warpage prediction difficult; mold flow analysis can simulate flow, cooling, shrinkage, and warpage in advance, optimizing gate and cooling design
Solution
①Perform mold flow analysis before making molds for complex parts; ②optimize gate and cooling water channels according to analysis; ③feed back mold trial data to calibrate the analysis model; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Mold flow analysis is insurance for complex HDPE parts; upfront investment greatly reduces the number of mold repairs; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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