Processing Machinery
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PA66 glass fiber distribution uniformity
Problembeschreibung
Warpage directions are inconsistent among products of the same batch, and glass fiber orientation is disordered under the microscope
Ursachenanalyse
Improper arrangement of screw mixing elements makes glass fiber regularly oriented instead of randomly distributed, and shrinkage forces in all directions are uneven; fiber agglomeration in poorly plasticized areas becomes a deformation source; during on-site troubleshooting, verify item by item according to this mechanism, avoiding blindly adjusting the machine based only on experience
Lösung
①Configure left-handed mixing elements on the screw to disrupt fiber arrangement; ②Ensure uniform and stable plasticizing back pressure; ③Microscopically check fiber distribution of deformed parts to locate the root cause; after adjustment, take continuous samples to verify the effect, confirm stability before resuming mass production
Wichtigste Erkenntnis
The microscopic uniformity of glass fiber distribution determines macroscopic deformation consistency; screw mixing design is an often-overlooked deep variable; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence
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