Unterschiede
Hier werden die Unterschiede zwischen zwei Versionen angezeigt.
| Nächste Überarbeitung | Vorhergehende Überarbeitung | ||
| en:grafische_darstellung_der_ergebnisse:entgasung [2025/06/06 14:55] – angelegt admin | en:grafische_darstellung_der_ergebnisse:entgasung [2025/09/05 10:28] (aktuell) – [Analysis of the degassing key figures] neelest | ||
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| ======Degassing====== | ======Degassing====== | ||
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| + | ===== Representation of the degassing key figures ===== | ||
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| + | The degassing key figures can be displayed via ‘// | ||
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| + | {{ : | ||
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| + | ===== Interpretation of the curves and values ===== | ||
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| + | * **Black curve**: The black curve represents the filling level. A single-screw extruder is fully filled as standard (filling level = 100%). However, this does not apply to degassing extruders. Here, the degassing zone must be depressurised so that the screw is only partially filled in this area. | ||
| + | * **Degassing surface area**: This value represents the surface area of the plastic melt with the air/vacuum. | ||
| + | * **Renewal time**: The renewal time is a measure of how long the melt takes to exit and re-enter the degassing zone before the pushing web and is therefore a measure of how quickly the degassing surface mixes. | ||
| + | * **Specific surface renewal**: This value is the quotient of the degassing surface and the renewal time. The larger the degassing surface and the shorter the renewal time, the higher this value. | ||
| + | * **Specific degassing index**: This value is a measure of the degassing performance of the degassing zone. The specific surface renewal increases approximately proportionally to the speed, whereas the specific degassing index is almost independent of the speed. | ||
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| + | ===== Analysis of the degassing key figures ===== | ||
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| + | * **Filling level**: The filling level should be well below 100% in the degassing zone and sufficiently long to prevent flooding of the degassing opening. | ||
| + | * **For a high degassing performance**, | ||
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| + | ===Further topics=== | ||
| + | * [[en: | ||
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| + | * [[faserlaengenabbau|]] | ||
| + | * [[faserlaengenverteilung|]] | ||
| + | * [[spannungsanalyse|]] | ||
| + | * [[kennlinienfeld|]] | ||
| + | * [[entgasung|]] | ||
| + | * [[zykluszeit|]] | ||
| + | * [[en: | ||
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