Molds & Tooling
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MP length out of tolerance
Problem Phenomenon
MP product length deviation >±0.5mm, exceeding the tolerance
Cause Analysis
MP shrinkage rate unstable, fluctuating ±0.5%; mold dimension design did not consider shrinkage compensation; insufficient cooling, dimensions not stabilized
Solution
1) precisely measure the MP shrinkage rate and compensate the mold; 2) fully cool to ensure dimensional stability; 3) annealing to eliminate post-shrinkage
Key Takeaway
length out of tolerance is caused by unstable shrinkage rate; precise shrinkage compensation is key
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