What are the common problems and solutions for pipe extruders
2023-07-06
Any device that is in normal use will inevitably encounter various problems. Today, we will summarize the common problems and solutions of pipe extruders? Let's learn together:
1.PVC pipes have wavy patterns on the outer layer
Reasons:
a. Uneven overflow around the mold mouth of the PVC pipe extruder
b. High cooling temperature
c. The amount of water sprayed on the mold sleeve is small and uneven
Solution:
d. Check the heater ring at mold opening point
e. Reduce temperature or increase cooling water circulation
f. Increase the amount of water spray and clear the sprinkler near outer die
2.Poor surface glossiness of finished products, or bright on half of the surface, and dull on the other half
Reasons:
a. The temperature of the PVC critical extrusion machine die is too low
b. The temperature of the PVC critical extrusion machine die of is too high
c. The surface of the outer die is not smooth
d. There is precipitation in the inner cavity of die
e. The axis of the PVC pipe extrusion machine and the management center of the vacuum pump die tank is not parallel
Solution:
a. Increase the temperature of the PVC critical extrusion machine die
b. Moderately reduce the temperature of PVC critical extrusion machine mold mouth
c. Clean the die and to remove the precipitates
d. Clean the calibrating sleeve
3.Uneven inner cavity of PVC pipe
Discovered by the pipe extruder manufacturer, the reason for the problem is as follows :
a. The key reason for irregular dents in the inner cavity is insufficient melting
b. The standard raised "flesh bumps" in the inner cavity are mainly due to the high temperature and fast rotation speed of the extruder screw
c. The text of the PVC key extrusion machine hollow building is too low
Solution
a. Increase the server temperature of PVC critical extrusion machines, increase the server temperature, increase the speed ratio, and promote melting
b. Reduce server temperature and extruder screw speed ratio
1.PVC pipes have wavy patterns on the outer layer
Reasons:
a. Uneven overflow around the mold mouth of the PVC pipe extruder
b. High cooling temperature
c. The amount of water sprayed on the mold sleeve is small and uneven
Solution:
d. Check the heater ring at mold opening point
e. Reduce temperature or increase cooling water circulation
f. Increase the amount of water spray and clear the sprinkler near outer die
2.Poor surface glossiness of finished products, or bright on half of the surface, and dull on the other half
Reasons:
a. The temperature of the PVC critical extrusion machine die is too low
b. The temperature of the PVC critical extrusion machine die of is too high
c. The surface of the outer die is not smooth
d. There is precipitation in the inner cavity of die
e. The axis of the PVC pipe extrusion machine and the management center of the vacuum pump die tank is not parallel
Solution:
a. Increase the temperature of the PVC critical extrusion machine die
b. Moderately reduce the temperature of PVC critical extrusion machine mold mouth
c. Clean the die and to remove the precipitates
d. Clean the calibrating sleeve
3.Uneven inner cavity of PVC pipe
Discovered by the pipe extruder manufacturer, the reason for the problem is as follows :
a. The key reason for irregular dents in the inner cavity is insufficient melting
b. The standard raised "flesh bumps" in the inner cavity are mainly due to the high temperature and fast rotation speed of the extruder screw
c. The text of the PVC key extrusion machine hollow building is too low
Solution
a. Increase the server temperature of PVC critical extrusion machines, increase the server temperature, increase the speed ratio, and promote melting
b. Reduce server temperature and extruder screw speed ratio
c. Increase the temperature of the hollow floor
Previous:Do you know about PE pipes?
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