The reason why the fatigue life of steel wire rope coated with manganese phosphating film is greatly prolonged is that manganese phosphating film improves the wear resistance and corrosion resistance of steel wire surface, and the steel gear and worm wheel surface of automobile gearbox can be treated with manganese phosphating film to ensure normal operation for more than ten years.
Phosphating film is firmly combined with steel wire matrix, and the phosphating film is porous. After the steel wire rope is sprayed with grease, the porous phosphating film can increase the storage of grease, thus reducing the friction coefficient between steel wires and achieving the purpose of slowing down fretting wear, which is the reason why the phosphating coated steel wire rope is super wear-resistant. Due to the improvement of corrosion resistance and wear resistance, manganese phosphating coated steel wire rope can adapt to the complex environment in the atmosphere and meet the requirements of lifting equipment.
The service life of manganese phosphating coated steel wire rope is much longer than that of smooth steel wire rope with the same structure, and the service life has been revolutionized. To be sure, all kinds of smooth wire ropes will be eliminated, including smooth elevator wire ropes and smooth lifting wire ropes. Manganese phosphating coated steel wire rope for crane is correct. Personal opinion, for reference only.