Material Drying
8 visualizaciones
ASA Bubbles and Air Pockets
Fenómeno del problema
【Problem Phenomenon】Bubbles inside ASA products, holes visible on sectioning, strength affected
Análisis de la causa
Moisture vaporization, degradation gas generation and thick-wall shrinkage cavities are the three types of bubbles: moisture type distributed overall, degradation type accompanied by discoloration, shrinkage cavity type concentrated in thick-wall core; during on-site troubleshooting, verify item by item according to this mechanism, avoid blindly adjusting the machine based only on experience
Solución
Locate the cause according to bubble distribution; moisture type strengthens drying, degradation type lowers temperature and shortens residence, shrinkage cavity type strengthens holding pressure; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Conclusión clave
ASA bubbles are classified by distribution, symptomatic treatment is effective; 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 subsequent similar problems
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!