Molding Process
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ABS vent depth
Problem Phenomenon
[Problem phenomenon] ABS vent too shallow causes trapped gas burnt, too deep causes flash
Cause Analysis
Vent depth 0.025-0.05mm: too shallow and gas cannot escape causing trapped gas burnt, too deep and melt overflows in causing flash; ABS fluidity determines this window
Solution
Vent depth precision machined according to 0.025-0.05mm; check vent first in trapped gas areas; check whether vent is too deep for flash; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
ABS vent 0.025-0.05mm, shallow traps gas and deep causes flash; 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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