Processing Machinery
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PA12 Product Dimensional Stability
Problem Phenomenon
Dimensions change with the environment.
Cause Analysis
PA12 has low water absorption (0.25% saturation) and better dimensional stability than PA6/PA66; but it is still affected by temperature and humidity.; During on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based solely on experience
Solution
①Evaluate water absorption impact according to application; ②conditioning to stabilize dimensions; ③control environment; ④test after aging.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PA12 dimensional stability is its advantage over PA6/PA66; low water absorption is the core value.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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