Material Drying
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PCABS moisture quick judgment
Problem Phenomenon
【Problem Phenomenon】The site lacks quick judgment means for PC/ABS drying qualification
Cause Analysis
Simple judgment: spread dried pellets on a hot glass plate to observe bubbles; or injection air-shot to see whether the melt bubbles or emits gas; instrument measurement is the most reliable; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based on experience alone
Solution
On-site use the air-shot observation method for preliminary judgment; if bubbling, continue drying; key parts retested with a moisture meter; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record the parameter changes, to facilitate locating the effective measures
Key Takeaway
PC/ABS moisture on-site air-shot preliminary judgment, instrument retest finalizes the case; 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 later
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