At present, the manganese phosphate coated elevator wire rope has the longest fatigue life.

Phosphating-coated steel wire rope is a Chinese patented technology. Steel wire ropes that are directly twisted using phosphate-coated steel wires are preferably manganese-based phosphating coatings or zinc-manganese-based phosphating coatings. These two All kinds of phosphating coatings are wear-resistant coatings, which can greatly improve the wear resistance and corrosion resistance of the steel wire surface, thereby inhibiting the occurrence of fretting fatigue and greatly extending the service life.

Manganese phosphate coated steel wire rope can produce all structures, such as commonly used 6*19W, 6*29Fi, 6*36WS, 8*19S, 8*36WS, 8*41WS and 35*7 and 19*7 multi-strand rotation resistance, etc., just order or purchase according to the steel wire rope structure in the national standard or industry standard.

Commonly used types of steel wire ropes for cranes include phosphate-coated steel wire ropes, galvanized steel wire ropes, stainless steel wire ropes or plastic-coated steel wire ropes. When used in an atmospheric environment, the manganese-based phosphating coated steel wire rope produced with patented technology has the longest service life. The manganese-based phosphating coating can greatly improve the wear resistance and corrosion resistance of the rope-making steel wire surface, and the phosphating-coated steel wire rope fatigue The service life is 3-4 times that of smooth steel wire rope, up to 5 times. With the research on wear-resistant phosphating liquid, there is the possibility of further improvement. According to the current market price of phosphate-coated steel wire rope, the average daily cost of phosphate-coated steel wire rope is only about 30% of that of smooth steel wire rope. Phosphate-coated steel wire rope is an upgraded product of smooth steel wire rope and is for reference only.