Common Problems with Rail Shoulder Plates

1. Cracking & Fractures
Cause: Excessive impact loads or poor-quality cast iron.

Solution: Use ductile iron or forged steel shoulders.

2. Wear & Deformation
Cause: Heavy wheel-rail friction, especially on curves.

Solution: Hardened steel shoulders (e.g., 60HRC hardness).

3. Corrosion & Rust
Cause: Moisture, salt (coastal areas), or lack of protective coatings.

Solution: Galvanized or stainless steel options.

4. Loose Fasteners
Cause: Vibration-induced bolt loosening.

Solution: Use lock washers or thread-locking adhesives.

5. Misalignment
Cause: Improper installation or sleeper movement.

Solution: Laser-guided alignment during installation.