Processing Machinery
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HDPE screw selection
Fenómeno del problema
HDPE plasticization is poor and energy consumption is high
Análisis de la causa
The screw compression ratio does not match the melting characteristics of HDPE; when troubleshooting on site, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solución
Select a screw with a compression ratio of 2.5-3.0 for HDPE; length-to-diameter ratio above 25; replace worn screws; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Conclusión clave
HDPE screws should be selected to match the melting characteristics; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar future problems
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