Extrusion & Post
8 views
Extruded pipe wall thickness uneven
Problem Phenomenon
Extruded pipe wall thickness uneven, obvious eccentric wall, cross-section measured wall thickness difference exceeds the standard allowable range
Cause Analysis
Die and mandrel concentricity deviation
Unstable extrusion temperature, melt viscosity fluctuation
Unstable haul-off speed
Uneven cooling water ring
Uneven screw plasticization
Solution
Adjust die and mandrel concentricity
Stabilize the extrusion temperature to the 170-230°C range
Stabilize haul-off speed
Uniform cooling water ring
Ensure uniform screw plasticization
Key Takeaway
Uneven pipe wall thickness needs to be addressed from die concentricity and process stability
Was this helpful?
0 people found this helpful
Thank you for your feedback!