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What are the cutting resistance indexes of mountaineering ropes?
2023-11-30 10:44:07

Mountaineering equipment. It is divided into two types: main rope and auxiliary rope. The main rope is 60--100 meters long, with a diameter of about 10 mm, a weight requirement of about 0.08 kg per meter, and a tensile strength requirement of not less than 1800 kg. In the past, it was mostly made of jute, but recently nylon fiber has been used as raw material. There is also a main rope with a diameter of 8-9 mm, which weighs 0.06 kg per meter and has a tensile strength of not less than 1600 kg. It is used for climbing steep rock walls.


Tie a 10kg weight to the climbing rope and rub it longitudinally on the rotating sand wheel until the outer net of the rope is damaged (which is what climbers often call the rope exposed). The time it takes for the rope to be worn directly reflects the relationship between the rope and the climbing rope. Longitudinal wear resistance. Generally speaking, mountaineering power ropes with the PERDUR logo can resist wear for more than 30% longer than other ropes in similar tests.



Crosswise cuts to the rope at sharp angles can have fatal consequences. When the rope is under load, it can be easily cut with a sharp object. In the UIAA's standard anti-cut test, an 80 kg weight is required to be dropped from a height of 5 meters, and the rope is cut on the edge of a sharp object with a radius of 5 mm placed laterally. In this first such experiment, the rope must not be damaged in any way. Only in this way can it pass the anti-cutting index test. The cutting resistance index of different brands of climbing ropes varies greatly. For example, the EDELWEISS ropes produced in Austria can withstand up to 6-7 similar tests. Some models of EDELWEISS climbing ropes can even withstand sharp edge cutting experiments with a radius of 0.75MM, while at the same time In most cases the other climbing ropes are cut.


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