Extrusion & Post
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Large Current Fluctuation of CMC Extruder
Problem Phenomenon
During CMC extrusion, the main motor current fluctuates ±15-20%, affecting extrusion stability and product quality
Cause Analysis
Feeding amount is unstable; CMC melt viscosity is sensitive to temperature and temperature fluctuations cause large viscosity changes; unsuitable screw structure causes uneven melting
Solution
1)Loss-in-weight feeder for stable feeding; 2)Precision temperature control ±1°C; 3)Select special screw; 4)Increase screw mixing section to ensure uniform melting
Key Takeaway
Current fluctuation is caused by unstable feeding, poor temperature control and unsuitable screw; system optimization is the key
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