Processing Machinery
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Corrosion of ETFE screw and barrel
Problem Phenomenon
Corrosion appears on screws processing ETFE
Cause Analysis
Corrosion of metal by HF from slight decomposition of ETFE
Solution
Use fluorine corrosion resistant alloys (Hastelloy, Monel); chrome plate or special coating on screw surface
Key Takeaway
ETFE processing has extremely high fluorine resistance requirements for equipment materials
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