Molds & Tooling
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SMMA Shrinkage Management
Fenómeno del problema
SMMA shrinkage 0.02-0.06% is extremely low, but mold design still needs precision.
Análisis de la causa
SMMA shrinkage 0.02-0.06% is far lower than general plastics; but precision parts still need compensation; directional differences; process influence; measurement verification.
Solución
①Design the mold according to 0.02-0.06% shrinkage; ②actual measurement verification for precision parts; ③directionality consideration; ④process stability.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Conclusión clave
SMMA extremely low shrinkage is a dimensional accuracy advantage; but precision management is still necessary; actual measurement keeps accuracy.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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