The varieties of wire ropes produced in China are as follows: 1. Phosphate coated steel wire rope (China patent). After phosphating with manganese series and zinc-manganese series, the wear resistance and corrosion resistance of steel wire rope have all-round jumped, and the fatigue life of steel wire rope has been greatly improved, which is 3_4 times that of smooth steel wire rope with the same structure (under comparable conditions in laboratory) and far exceeds that of imported steel wire rope. It is suggested to do a comparative fatigue life test. Phosphating coated steel wire rope is completely replacing all kinds of smooth steel wire rope, and it can also replace galvanized steel wire rope which is electroplated first and then thinned with zinc layer (corrosion resistance can be tested by salt spray test), with longer service life, lower unit use cost and better quality stability and reliability. According to the approximate price of wire rope market at present, the price of manganese phosphating coated wire rope is about 1.4- 1.6 times that of smooth wire rope. However, the extension of service life is much higher than the price increase, so the daily average use cost of phosphating coated steel wire rope is only 30-45% of that of smooth steel wire rope, which is lower in use cost and higher in cost performance.
2. Galvanized steel wire rope, including hot galvanizing and electro-galvanizing. Generally, the galvanized zinc layer is thick, while the galvanized zinc layer is thin.
3. Stainless steel wire rope, mainly made of 304 or 3 16 stainless steel, has excellent anticorrosion effect, but it is expensive.
4. Based on plastic-coated steel wire rope and carbon steel wire rope, the outer layer is coated with polyethylene, polypropylene or nylon.
5. Smooth steel wire rope, with short service life and sharp drop in market demand, will be completely eliminated by phosphating coated steel wire rope.
6. Steel wire rope for mooring in offshore engineering
7. Wire rope
For hoisting machinery used in atmospheric environment, manganese phosphating coated wire rope is preferred, hot dip galvanized-phosphating double-coated wire rope is preferred in heavy corrosive environment, and marine wire rope is preferred in seawater. Please note that the name of wire rope, such as phosphating coated wire rope or 3 16 stainless steel wire rope, must be indicated on the purchase invoice to prevent illegal enterprises from infringing their legitimate rights and interests. In addition, patented products will generally be marked with the patent number on the outer package of steel wire rope, and the warranty should have the main technical indicators, such as the type and weight of phosphating film (phosphating film has an important impact on the service life of steel wire rope, such as wear resistance and corrosion resistance, etc.), for reference only.