Material Drying
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ASA vacuum drying selection
Problem Phenomenon
[Problem phenomenon] High-requirement ASA products ordinary hot air drying unstable
Cause Analysis
Optical grade or high appearance requirement ASA can use vacuum drying to improve endpoint stability: moisture diffuses fast at low temperature and no oxidation risk; cost higher than hot air but quality stable
Solution
High-requirement parts use vacuum drying 80°C×2-3h; conventional parts hot air dehumidification suffices; drying method selected by appearance grade; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
ASA high-end parts vacuum drying improves quality, conventional parts hot air sufficient; after confirming effectiveness, solidify 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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