Molds & Tooling
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ASA Gate Mark Whitening
Fenómeno del problema
【Problem Phenomenon】Obvious whitening marks after gate cutting on ASA products
Análisis de la causa
High shear stress concentration in the gate area, cut section stress whitening; too large gate or position on appearance surface aggravates; during on-site troubleshooting, verify item by item according to this mechanism, avoid blindly adjusting the machine based only on experience
Solución
Gate on non-appearance surface or submarine type; sharp tool trimming; slight hot air re-warming after trimming to reduce white marks; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Conclusión clave
ASA gate marks rely on position design plus sharp trimming; 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
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