Extrusion & Post
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Snakeskin Pattern on CMC Surface
Problembeschreibung
Snakeskin-like irregular texture on the surface of CMC extruded products
Ursachenanalyse
Extrusion temperature is low and melt elastic recovery is uneven; die temperature distribution is uneven
Lösung
1)Increase extrusion temperature to the processing temperature range; 2)Homogenize die temperature ±2°C; 3)Reduce extrusion rate to reduce elastic recovery
Wichtigste Erkenntnis
Snakeskin pattern is caused by low-temperature extrusion and elastic recovery; temperature increase and speed reduction are the key
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