⑧ Precautions when using the injection molding machine. When there is no material in the screw or barrel of the injection molding machine, it is not advisable to use a high screw speed (preferably below rpm). Wait until the raw material fills the screw groove (when the melt is extruded from the nozzle) before turning the screw Increase the speed to the required value. To avoid scratching the screw or barrel due to too high idling speed or too long time.
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Second hand 50t Demag injection molding machine for sale