Molds & Tooling
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PA12 Product Trapped Air Burnt
Problem Phenomenon
Burnt marks at the end.
Cause Analysis
Poor venting; high-speed filling traps air.; During on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based solely on experience; This mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solution
①End venting; ②reduce speed; ③clean vent grooves; ④optimize gate.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability; Change only one variable at a time and record parameter changes to facilitate locating effective measures
Key Takeaway
The trapped air position is the venting point.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; Include this case in the defect archive as a troubleshooting reference for subsequent similar problems
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