Influence of Wave Property upon Various Properties of Wire Rope for Mining

Abstract

We suppose that the wave of wire rope for mining exerts remarkable influence upon its various properties and consequently is in danger of causing unexpected obstacles and accidents in service.
This study was carried out to find out this influence experimentally and theoretically. In this study we came to the following conclusions:
1. When the wave of rope has the same direction as the lay of rope, the tensile strength decreases and the true elongation increases and, on the contrary, when the wave-has the opposite direction, the tensile strength increases and the true elongation decreases.
2. The wave of rope has bad influence upon bending fatigue property of wire;ope.
3. The rotating by tension owing to the wave of rope appears to be depended mainly on an early loading. The rotating of rope by tension is arisen practically from both wave and lay of rope. The wave of rope having the same direction as the lay of rope causes the negative rotating by tension and the wave having the opposite direction causes the positive rotating.