Injection Molding
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ASA injection speed high speed
Fenómeno del problema
ASA injection speed medium to high, high speed obtains the best surface and weld lines, but shear management.
Análisis de la causa
ASA injection speed recommended medium to high; high speed obtains the best surface finish and strongest weld lines; but shear stress; ASA can withstand high shear; medium to high screw speed; back pressure kept low.
Solución
①Injection speed medium to high; ②high speed surface and weld lines; ③screw speed medium to high; ④back pressure kept low; ⑤shear monitoring.; After adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Conclusión clave
ASA high-speed injection is officially recommended; surface and weld lines benefit doubly; low back pressure protects the material.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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