Effective Protection Measures for Gantry Cranes in Rainy Season

In the rainy season, double-girder gantry cranes face the following challenges:

1. High humidity environment: The air humidity is high in the rainy season, which can easily make the metal structural parts of the crane damp, thereby aggravating electrochemical corrosion.
2. Poor air circulation: During the rainy season, poor air circulation can easily lead to increased humidity inside the crane, further accelerating the corrosion of metal structural parts.
3. Large temperature changes: The temperature fluctuates greatly during the rainy season, which may cause uneven heating of the crane’s structural parts, thereby accelerating the corrosion of metal structural parts.

The common corrosion types of double-girder gantry cranes are mainly the following:

1. Electrochemical corrosion: Due to the potential difference on the surface of metal structural parts, electrochemical reactions occur, causing damage to metal structural parts.
2. Stress corrosion: Due to stress, brittle fracture of metal structural parts may occur.
3. Corrosion fatigue: Long-term corrosion may cause fatigue damage to metal structural parts.

For different types of corrosion, need to take some effective anti-corrosion measures. The following are some common anti-corrosion measures:

1. Cathodic protection: insert sacrificial anodes into the protected metal structure and use external power to reduce the anodes to protect the metal structure from corrosion.
2. Anti-corrosion coating: anti-corrosion materials are coated on the surface of metal structures to prevent them from corrosion.
3. Enhance structural strength: improve the corrosion resistance of metal structures by increasing their strength.