Molds & Tooling
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ABS jetting mark
Problem Phenomenon
[Problem Phenomenon] ABS snake-shaped jetting marks near gate
Cause Analysis
High speed through too small gate jets directly into cavity; front folding; 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
Overlap fan gate against wall; gate facing core; reduce initial speed; 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
ABS jetting marks rely on gate wall-impingement arrangement; 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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