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Corrosion can significantly reduce the
lifespan of a pneumatic actuator. Here are key preventive measures:
1. Material Selection
Choose stainless steel (304/316) or
aluminum with corrosion-resistant coatings for bodies and internal components.
Use Viton or EPDM seals for chemical
resistance.
2. Protective Coatings & Treatments
Apply epoxy/powder coatings or anodizing
(for aluminum) to shield against moisture and chemicals.
Use anti-corrosion sprays (e.g.,
silicone-based) on exposed metal parts.
3. Air Quality Control
Install air dryers and filters (40µ or
finer) to remove moisture and contaminants.
Maintain proper dew point to prevent
internal condensation.
4. Environmental Protection
Use weatherproof enclosures (IP65/IP67) for
outdoor or humid environments.
Avoid direct exposure to saltwater, acids,
or abrasive dust.
5. Regular Maintenance
Inspect for rust, pitting, or seal
degradation periodically.
Reapply lubricants (e.g., silicone grease)
to O-rings and moving parts.
6. Cathodic Protection (for Severe Conditions)
Install sacrificial anodes in
marine/offshore applications.
By implementing these steps,
corrosion-related failures can be minimized, ensuring long-term reliability.
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