Processing Machinery
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PVC Warpage Deformation
Problembeschreibung
Product warpage exceeded tolerance, deformation was obvious at uneven wall thickness, and assembly was difficult
Ursachenanalyse
PVC warpage originates from uneven cooling and wall thickness differences; poor heat conduction makes thick-wall areas cool slowly and shrink more; uneven holding pressure also causes density differences leading to deformation; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
Lösung
①Uniform wall thickness design; ②optimize cooling water circuits for balanced cooling; ③optimize holding pressure and time for uniform shrinkage compensation; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Wichtigste Erkenntnis
PVC warpage treatment relies on structural uniformity and cooling balance; holding pressure optimization is an auxiliary means; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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