Material Drying
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ABS weld line bubble
Problem Phenomenon
[Problem Phenomenon] ABS bubbles gathering at weld line
Cause Analysis
Convergence entraps air plus venting end effect; more obvious when moisture not fully removed; during on-site troubleshooting, verify item by item according to this mechanism, avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry materials and should be confirmed first during troubleshooting
Solution
Strengthen venting in weld line area; drying up to standard; convergence position optimization; after adjustment, continuously sample to verify the effect, resume mass production only after confirming stability; change only one variable each time and record parameter changes to facilitate locating effective measures
Key Takeaway
For ABS weld line bubbles check venting and drying; 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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