Injection Molding
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PESU Fast Injection Speed
Problem Phenomenon
Improper PESU injection speed; balance between fast requirements and defect risks.
Cause Analysis
PESU recommends fast injection; fast filling of high-viscosity material reduces front cooling; but too fast causes shear and trapped air; multi-stage injection requirements; structural adaptation.; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
①Injection speed mainly fast; ②multi-stage curve optimization; ③shear and trapped air monitoring; ④structural adaptation adjustment.; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
PESU fast injection is the official recommendation; multi-stage management prevents side effects; monitoring ensures quality.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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