Corrosion damage of the screw and barrel

Problem Phenomenon

Corrosion pits appear on the screw and barrel, and the service life is greatly shortened

Cause Analysis

Trace HF at high temperature strongly corrodes metal materials

Solution

Select Hastelloy C276 or Inconel 625, hard chrome plating, and temperature control

Key Takeaway

Fluoroplastics must use corrosion-resistant screws

PVDFcorrosion

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