The steel wire rope is subjected to alternating stress during use. First, fretting wear occurs, and then fatigue cracks gradually occur. After the crack expands, the steel wire breaks. When the wire breakage and wear reach a certain level, the steel wire rope is scrapped.
The use time of the steel wire rope is short, or to be precise, the service life is short. The fundamental reason for the short service life is the low quality of the steel wire rope. In order to ensure that the service life meets the requirements, do not buy shoddy and inferior quality steel wire ropes. The steel wire ropes must be selected correctly and the steel wire ropes must be lubricated and maintained during use. Manganese phosphating coated steel wire rope is the most advanced technology in the field of steel wire rope, and its fatigue life is three times that of smooth steel wire rope.
Crane users need high-quality steel wire ropes, which should have long service life and highly stable and reliable quality. For steel wire ropes used in atmospheric environments, the main cause of wire rope failure is fretting fatigue. At present, the first preventive measure against fretting fatigue in the world's steel wire rope field is the phosphating-coated steel wire rope produced with patented technology. The rope-making steel wire has been manganese-based Phosphating or zinc-manganese treatment can comprehensively improve the wear resistance and corrosion resistance of the steel wire surface. It is not easy to wear and corrode, which greatly improves the fatigue life of the steel wire rope. The fatigue life is 3-4 times that of the smooth steel wire rope with the same structure (comparable conditions in the laboratory (below), it can be verified through fatigue testing. If you have a fatigue testing machine, do the comparison test yourself. Such test results are the most credible. The service life of the wire rope is directly proportional to the fatigue life. If the fatigue life is long, the service life will be extended in the same proportion. According to the current approximate price of the steel wire rope market, the price of the manganese-based phosphate-coated steel wire rope is about 1.4-1.6 times that of the smooth steel wire rope, and the service life extension is much higher than the price increase. Therefore, the daily average price of the phosphate-coated steel wire rope is The usage cost is only 30-45% of the smooth steel wire rope, which is lower in usage cost and more cost-effective. .