The selection of steel wire ropes is mainly based on the size of the lifting force. You need to know how much force the unloading platform requires, and then select the appropriate steel wire rope based on the size of the force and the safety factor. How to choose without any parameters?
The main varieties of steel wire ropes produced in China are as follows:
1. Phosphating coated steel wire rope (patented technology). The steel wire is treated with manganese or zinc-manganese phosphating. The steel wire has wear resistance, The corrosion resistance has been comprehensively improved. The combined effect of phosphating film and grease can effectively inhibit the occurrence of fretting wear and completely solve the wear problem of steel wire ropes. The fatigue life is 3 times that of smooth steel wire ropes with the same structure. The fatigue life can be verified through fatigue tests ( It is most credible to do the fatigue test yourself). It is an upgraded product of the smooth steel wire rope. It can also be used as an alternative to the galvanized steel wire rope that is first plated and then pulled out with a thin zinc layer (the corrosion resistance can be tested or compared through the salt spray test). The service life is Extra long, lower unit cost and better stability.
2. Galvanized steel wire rope, including hot-dip galvanizing and electro-galvanizing. Generally speaking, hot-dip galvanizing has a thick zinc layer and electro-galvanizing has a thin zinc layer.
3. Stainless steel Steel wire rope, mainly made of 304 or 316 stainless steel, has excellent anti-corrosion effect but is expensive
4. Plastic-coated steel wire rope, based on carbon steel wire rope, the outer layer is coated with polyethylene, polypropylene or nylon
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5. Smooth steel wire ropes have a short service life and a sharp drop in market demand, and will be completely eliminated by phosphate-coated steel wire ropes.
6. Steel wire ropes for marine engineering moorings
7. Cable wire ropes
For use in atmospheric environments, phosphating coated steel wire ropes are preferred, and in heavily corrosive environments, heat-resistant wire ropes are preferred. Galvanized-phosphating double-coated steel wire rope, offshore steel wire rope is preferred in sea water. When purchasing, please note that the name of the steel wire rope, such as phosphate-coated steel wire rope or 316 stainless steel wire rope, must be indicated on the purchase invoice to protect your legitimate rights and interests. In addition, patented products generally have a patent number spray-marked on the outer packaging of the steel wire rope, and a warranty. The book should have main technical indicators, such as phosphating film type and film weight, for reference only