Extrusion & Post
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PVC Extrusion Temperature Curve
Problem Phenomenon
PVC pipe extrusion surface rough and plasticization uneven
Cause Analysis
Extrusion temperature curve unreasonable, melt plasticization quality poor; during on-site troubleshooting, verify item by item according to this mechanism, avoid blindly adjusting the machine based solely on experience; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solution
Extruder barrel by 140-185℃ gradient; die head temperature uniform; screw speed matched; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Pipe extrusion temperature curve determines plasticization quality; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems later
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