Injection Molding
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PPSU injection speed fast
Fenómeno del problema
Improper PPSU injection speed; balance between fast speed requirements and defect risks.
Análisis de la causa
PPSU recommends fast injection; high-viscosity material fast filling reduces flow front cooling; but too fast causes shear and air trap; multi-stage injection needs; structural adaptation.; During on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
Solución
①Injection speed mainly fast; ②multi-stage curve optimization; ③shear and air trap monitoring; ④structural adaptation adjustment.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Conclusión clave
PPSU fast injection is the official recommendation; multi-stage management prevents side effects; monitoring ensures quality.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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