Processing Machinery
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Screw and barrel high-temperature corrosion
Problem Phenomenon
After long-term PEEK processing, obvious corrosion pits appear on the screw surface
Cause Analysis
PEEK chemically attacks metals at high temperatures above 380°C (C-F bond scission products); fillers (CF/GF) aggravate physical abrasion
Solution
Select high-temperature and corrosion-resistant alloy materials (Hastelloy C-276, Inconel 625); nitriding, chrome plating or PVD coating treatment on the screw surface
Key Takeaway
PEEK high-temperature corrosion places extremely strict requirements on equipment materials
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