Material Drying
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PA6 Product Insufficient Toughness (Dry-state Brittleness)
Problem Phenomenon
Clips broke when assembling products just demolded, but were normal after being placed for a few days, showing timeliness.
Cause Analysis
Dry-state PA6 has not absorbed moisture, and toughness is at its lowest value; clip assembly in dry state easily breaks; this is a direct manifestation of PA6's moisture absorption characteristic; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience.
Solution
①Condition before assembly;②or extend the natural moisture absorption time of products before assembly;③design clips checked according to dry-state strain;④reasonably arrange production and assembly rhythm.
Key Takeaway
PA6 'dry-state nylon assembly = time bomb': condition first and then assemble; dry-state and wet-state toughness are worlds apart, and assembly timing and conditioning management must be included in the process.
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