Processing Machinery
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ABS wall thickness uniform design
Problem Phenomenon
[Problem phenomenon] ABS wall thickness abrupt changes cause batch defects of sink marks and warpage
Cause Analysis
Wall thickness should be maintained at 1.5-3.5mm with uniform transition; abrupt changes cause large cooling shrinkage differences producing sink marks and internal stress; structural design is the fundamental prevention; during on-site troubleshooting, verify item by item according to this mechanism, avoiding blind machine adjustment based solely on experience
Solution
Wall thickness controlled at 1.5-3.5mm uniformity; gradual transition at abrupt changes; reduce material and add ribs in thick areas; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
ABS wall thickness 1.5-3.5mm uniform, abrupt change is the root of all evil; 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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