Unterschiede

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--- en:berechnungen:temperaturverlauf [2025/06/27 13:27] – [Temperature calculation in PSI] cschall
+++ en:berechnungen:temperaturverlauf [2025/07/03 13:34] (aktuell) – cschall
@@ Zeile 9: / Zeile 9: @@
 ==== Temperature Calculation in PSI ====
-Additionally, for each interval in PSI, a proportionate dwell time is taken into account. The approach is very similar to the consideration of dwell times during [[en:berechnungen:aufschmelzverlauf|melting]].
+Additionally, for each interval in PSI, a proportionate downtime time is taken into account. The approach is very similar to the consideration of downtimes during [[en:berechnungen:aufschmelzverlauf|melting]].
-For the dwell-time-weighted calculated dwell time per interval, heating or cooling purely due to heat conduction from the barrel temperature control is calculated. The more residence time the polymer experiences from entering the injection molding machine until injection, the closer the temperature profile approaches the heating zone temperature profile.
+For the residence-time-weighted calculated downtime time per interval, heating or cooling purely due to heat conduction from the barrel is calculated. The more residence time the polymer experiences from entering the injection molding machine until injection, the closer the temperature profile approaches the heating zone temperature profile.
 ===== Special features in the temperature calculation =====
@@ Zeile 18: / Zeile 18: @@
 ==== Influence of disperse melting on the temperature ====
-If [[en:berechnungen:aufschmelzverlauf|dispersed melting]] occurs (e.g. due to user specifications or a shearing or mixing element), this is also reflected in the temperature curve. During dispersed melting, the unmelted plastic is distributed in the plastic melt and is heated by heat conduction from the surrounding melt and also melted.
+If [[en:berechnungen:aufschmelzverlauf|dispersed melting]] occurs (e.g. due to user specifications or a shearing or mixing element), this is also reflected in the temperature profile. During dispersive melting, the unmelted polymer particles are distributed within the polymer melt and are heated and melted by heat conduction from the surrounding melt.
 {{ :berechnungen:aufschmelzverlauf:abb_disperses_aufschmelzen_de_en.svg?nolink&400 |}}
@@ Zeile 46: / Zeile 46: @@
 The internal temperature control is calculated iteratively. \\
-First, the temperature curve without internal temperature control is always calculated. The steady-state heat flows for the constant screw base temperature profile can be calculated from the known volume flow of the temperature control medium, the geometry and thermal conductivity of the screw and the inner tube as well as the known screw base temperature. \\
+First, the temperature profile without internal temperature control is always calculated. The steady-state heat flows for the constant screw ground temperature profile can be calculated from the known volume flow of the temperature control medium, the geometry and thermal conductivity of the screw and the inner tube as well as the known screw ground temperature. \\
-The temperature calculation is then carried out again, taking into account the heat flow into the tempered screw core. The resulting temperature reduction only occurs at the base of the screw and leads to an inhomogeneous temperature profile over the channel height. As a result, a cooler screw base temperature is calculated, which in turn is used to calculate the heat flows in the tempering medium and within the screw. \\
+The temperature calculation is then carried out again, taking into account the heat flow into the tempered screw core. The resulting temperature reduction only occurs at the ground of the screw and leads to an inhomogeneous temperature profile over the channel height. As a result, a cooler screw ground temperature is calculated, which in turn is used to calculate the heat flows in the tempering medium and within the screw. \\
 With the heat flow into the screw core now reduced, the temperature calculation is started again. The process is carried out iteratively until a stationary process is reached.
@@ Zeile 60: / Zeile 60: @@
   * [[en:berechnungen:temperaturverlauf|]]
   * [[en:berechnungen:leistung_und_schubspannungen|]]
+  * [[en:berechnungen:schergeschwindigkeit]]
   * [[en:berechnungen:verweilzeit|]]
   * [[en:berechnungen:verweilzeitverteilung|]]