Material Drying
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PCABS Weld Line Bubbles
Fenómeno del problema
[Problem Phenomenon] PC/ABS bubbles gather at weld lines
Análisis de la causa
Confluence entrains gas plus the end effect of venting in the weld line area; more obvious when moisture is not completely removed; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solución
Strengthen venting in the weld line area; drying up to standard; optimize confluence position; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Conclusión clave
For PC/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 in the future
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