Molds & Tooling
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PC Jetting Marks
Fenómeno del problema
[Problem Phenomenon] Snake-shaped jetting marks near the PC gate
Análisis de la causa
High speed through a too-small gate jets directly into the empty cavity; the front folds into marks; when troubleshooting on site, verify each item according to this mechanism one by one, 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
Solución
Lap fan gate against the wall; gate facing the core; reduce the initial speed; after adjustment, take samples continuously to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes, so as to locate effective measures
Conclusión clave
PC jetting marks rely on the gate wall-impinging arrangement; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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