Molds & Tooling
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PC/ABS flash
Problem Phenomenon
Flash at the parting line.
Cause Analysis
Insufficient clamping force or mold wear; high-pressure melt seeps into the gap.; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based on experience alone; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solution
①Check clamping force; ②repair the parting line; ③reduce pressure peak; ④repair wear.; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Flash is distinguished into two categories of causes: clamping and wear.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems later
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