Molds & Tooling
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CMC Length Out of Tolerance
Problem Phenomenon
Length deviation of CMC products >±0.5mm exceeds the tolerance
Cause Analysis
CMC shrinkage is unstable, fluctuating ±0.5%; mold dimension design does not consider shrinkage compensation; cooling is insufficient and dimensions are not stabilized
Solution
1)Accurately measure CMC shrinkage and compensate the mold; 2)Fully cool to ensure dimensional stability; 3)Annealing treatment to eliminate post-shrinkage
Key Takeaway
Length out of tolerance is caused by unstable shrinkage; accurate shrinkage compensation is the key
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