The greater the bending stress of the rope, the shorter the service life of the wire rope.
The ratio of drum diameter to wire rope diameter is at least 40 times, generally 50-60 times, which is also related to the structure of wire rope. The ratio of single drum or double drum is specified to limit the bending stress of wire rope.
China ranks first in the world with an annual output of10.8 million tons of steel wire rope. Phosphating wire rope is a revolutionary and innovative technology in the field of wire rope in the world. Its service life (fatigue life) has greatly jumped, successfully completing the historical mission of wire rope.
Entering the era of phosphating coated wire rope: 1. Phosphating coated steel wire rope (patented in China), after being phosphatized by manganese series or zinc-manganese series, the wear resistance and corrosion resistance of steel wire rope have all-round jumped. GB/T11376-1997, the national standard of metal phosphate conversion film, introduces the wear resistance and rust resistance of phosphating film in detail.
Therefore, it can effectively inhibit the occurrence of fretting and overall photography, and it is an upgraded product of smooth steel wire rope.
It can be used instead of galvanized steel wire rope after electroplating. At present, the fatigue life of phosphating rope is about 3 times that of bare rope, which can be shortened through fatigue test, and the service life can be greatly improved with the in-depth study of wear-resistant phosphating solution.
Phosphating film 3-60g/m2 steel wire is directly twisted without drawing after phosphating.