In the process of extrusion, the temperature of the cylinder drops obviously, and the main reasons are as follows:
1 the cooling water is not properly controlled, the flow of cooling water is too large or the temperature is too low.
Damage of 2 machine barrel with part heater
The power of the heating ring used in the 3 machine barrel is too small
The following measures are as follows:
1 check whether the cooling water solenoid valve is damaged or whether the water temperature is suitable
2 the heater has no current when it is electrified, and it detects whether the heater is damaged or not.
3 check the power of the heater