Molds & Tooling
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EMA length out of tolerance
Fenómeno del problema
EMA product length deviation >±0.5mm, exceeding tolerance
Análisis de la causa
EMA shrinkage rate unstable, fluctuating ±0.5%; mold dimension design did not consider shrinkage compensation; insufficient cooling with dimensions not stabilized
Solución
1) Precisely measure EMA shrinkage rate and compensate the mold; 2) Cool sufficiently to ensure dimensional stability; 3) Annealing treatment to eliminate post-shrinkage
Conclusión clave
Length out of tolerance is caused by unstable shrinkage rate; precise shrinkage compensation is key
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