Main varieties of steel wire ropes:
1. Phosphated coated steel wire rope (Chinese patent). The steel wire has been treated with manganese or zinc-manganese phosphating. The surface of the steel wire is very wear-resistant and effectively inhibits The occurrence of fretting wear is an upgraded product of the smooth steel wire rope. Its service life in the atmospheric environment far exceeds that of the smooth steel wire rope of the same structure, including steel wire ropes imported from developed countries such as Germany and Japan (the current phosphated rope is three times that of the smooth rope) It may be significantly improved in the future, and can be verified and compared through fatigue tests. The phosphating film is 3-60 g/m2. After phosphating, the steel wire is no longer drawn and the wire rope is directly twisted. Note - do not confuse. Phosphating for drawing and phosphating of rope-making wires), foreign countries have copied China's innovative wire rope technology. This innovative technology is suitable for almost all types of steel wire ropes, such as elevator wire ropes, important-purpose steel wire ropes, etc. (Baidu Library has free downloads of phosphate-coated steel wire rope papers).
2. Galvanized steel wire rope, including hot-dip galvanizing and electro-galvanizing. The direct-lift hot-dip galvanized steel wire has a thicker zinc layer. The thicker the zinc layer, the stronger the anti-corrosion ability and the longer it will last. Electro-galvanized steel wire has a thicker zinc layer. Thinner. Since the phosphating coating has certain anti-corrosion properties, manganese-based phosphating coated steel wire ropes can be used instead of some types of thin zinc layer galvanized steel wire ropes, such as the Class B galvanized layer in GB8918-2006.
3. Stainless steel wire rope, which is made of twisted stainless steel wire, such as 304 or 316 stainless steel, is relatively expensive. The stainless steel wire is treated with manganese phosphating coating (phosphating of stainless steel wire requires special phosphorus) chemical formula), which can also greatly extend the service life.
4. Plastic-coated steel wire rope, based on high-quality carbon steel wire rope, coated with polyethylene or polypropylene on the outer layer of the steel wire rope or strand rope
5. Smooth steel wire rope, 1834 Production began in the United Kingdom, and my country began production and use at Tianjin No. 1 Steel Wire Rope Factory in 1939. As phosphate-coated steel wire ropes enter the market in large quantities, they will be completely replaced.
Gondola wire rope is a type of steel wire rope. The steel wire rope is twisted into a spiral structure by steel wire and rope core material (steel core, sisal jute rope core or polypropylene rope core). The steel wire rope is twisted Grease needs to be sprayed during the manufacturing process to reduce the wear of the steel wire