Injection Molding
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PEI Clamping Force Configuration
Problem Phenomenon
PEI production has flash and mold swelling problems; clamping force configured by experience is insufficient, and glass fiber reinforced grades require more.
Cause Analysis
PEI clamping force needs to provide 4~6 tons per square inch of projected area; glass fiber reinforced resins may require higher clamping force; high injection pressure processes impose rigid constraints on clamping requirements.
Solution
①Calculate clamping force at 4~6 tons per square inch of projected area; ②appropriately increase for glass fiber reinforced grades; ③review the clamping margin for high-pressure processes; ④stop the machine immediately for inspection if mold swelling signs appear.
Key Takeaway
PEI clamping force of 4~6 tons per square inch is a precise standard; increasing for reinforced grades is a detail; reviewing the clamping margin prevents equipment damage.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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