1. Oxidation: During the production and use of organic fertilizer equipment, it is exposed to air and chemically reacts with oxygen to form iron oxide, that is, rust.

2. Moisture action: During the production and use of organic fertilizer equipment, it comes into contact with water, and water penetrates into the surface of the equipment, resulting in rust on the metal surface.

3. Corrosive media: During the production and use of organic fertilizer equipment, it may be exposed to corrosive media, such as acid, alkali, salt, etc., which accelerates the corrosion of the equipment.

4. Unreasonable equipment design: In the design process of organic fertilizer equipment, if anti-rust measures are not taken into account, such as the selection of appropriate materials, coatings, etc., it is easy to lead to equipment rust.

5. Improper construction: During the installation, maintenance and cleaning of the organic fertilizer production line, improper construction, such as welding, cutting and other operations, may damage the protective layer on the surface of the equipment, resulting in rust.

6. Environmental factors: the ambient humidity, temperature and air pollution of the organic fertilizer equipment will affect the corrosion rate of the equipment.

7 Material quality problems: If the quality of the material used in the organic fertilizer equipment is not qualified, such as containing too much impurities and high carbon content, it is easy to lead to rust of the equipment.

The reasons for the rusting of organic fertilizer equipment are various, involving equipment design, material quality, construction technology, environmental factors and so on. To prevent the equipment from rusting, it is necessary to improve and control it from many aspects.