Molding Process
4 visualizaciones
PSU Shrinkage and Dimensional Accuracy
Fenómeno del problema
[Problem Phenomenon] Dimensional accuracy of PSU products is hard to control; shrinkage compensation basis is insufficient
Análisis de la causa
PSU molding shrinkage is low and stable (about 0.6-0.7%); low molecular orientation makes directional shrinkage differences small; accuracy problems mostly stem from process fluctuations rather than the material itself
Solución
Design mold compensation according to the low shrinkage in the data sheet; lock process parameters to reduce fluctuations; uniformize mold temperature for precision parts and perform first-article full-dimension verification; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Conclusión clave
PSU low shrinkage and low orientation are a blessing for accuracy; fluctuations mostly come from unstable process; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence; Include this case in the defect archive as a reference for troubleshooting similar problems in the future
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!