Processing Machinery
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ASA back pressure kept low
Problembeschreibung
ASA back pressure improper, shear heat and degradation, low back pressure principle.
Ursachenanalyse
ASA back pressure should be kept as low as possible; high back pressure shear heat; although ASA can withstand high shear, protect the rubber phase; plasticization quality; melt temperature.; During on-site investigation, verify item by item according to this mechanism, avoid blindly adjusting the machine based on experience alone
Lösung
①Back pressure kept at low level; ②for insufficient plasticization, prioritize raising temperature; ③melt temperature monitoring; ④rubber phase protection.; After adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Wichtigste Erkenntnis
ASA low back pressure is a material protection principle; temperature replacing back pressure is the correct path; monitoring prevents deviation.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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