1. Phosphating coated steel wire rope (Chinese patent), referred to as phosphating steel wire rope, the weight of the phosphating film on the rope making steel wire is 3-60 g/square meter. , steel core and wire rope, phosphating film can improve the wear resistance and corrosion resistance of the surface of the rope making wire, and effectively inhibit the occurrence of fretting fatigue. For the phosphating treatment of rope-making steel wire, manganese series or zinc-manganese series phosphating is preferred. After the steel wire is phosphatized, no drawing process is performed, and the phosphating steel wire is directly used to make the steel wire rope. Due to the phosphating coating, the surface of the wire is more wear-resistant. Moreover, the phosphating film is non-conductive, which can improve the corrosion resistance of the steel wire at the same time. The service life of the phosphated steel wire rope is 2-3 times that of the smooth steel wire rope, and the fatigue resistance of the steel wire rope is greatly improved. Phosphating steel wire rope is not only an ideal substitute for smooth steel wire rope, but also has the ability to replace imported steel wire rope.
2. Galvanized steel wire rope, including hot-dip galvanizing and electro-galvanizing. The protection of the galvanized layer on the steel wire belongs to anodic protection. The thicker the galvanized layer, the stronger the anti-corrosion ability.
3. Plastic-coated steel wire rope, coating a certain thickness of plastic on the outer surface of the steel wire rope or the outer surface of the strand rope, including polyethylene, polypropylene, polyurethane, etc.
4. Smooth steel wire rope, rope-making steel wire obtained after cold drawing of raw materials prepared by heat treatment and surface preparation (Note: the phosphating film formed in the pretreatment process will gradually fall off due to intense friction with the drawing die during the cold drawing process), and the steel wire is no longer After any surface treatment, the strand rope, steel core and wire rope are directly twisted. The production began in 1834 abroad, and the first wire rope factory in Tianjin began production in 1939.
